[RFC-v2 05/12] iscsi-target: Add TPG and Device logic

Nicholas A. Bellinger
2011-03-14T11:58:00Z

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From: Nicholas Bellinger <nab@linux-iscsi.org>

This patch adds TPG and device logiced using for mapping iscsi-target
abstractions on top of TCM v4 struct se_portal_group and struct se_device
abstractions.

Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
---
drivers/target/iscsi/iscsi_target_device.c | 128 +++
drivers/target/iscsi/iscsi_target_device.h | 9 +
drivers/target/iscsi/iscsi_target_tpg.c | 1165 ++++++++++++++++++++++++++++
drivers/target/iscsi/iscsi_target_tpg.h | 70 ++
4 files changed, 1372 insertions(+), 0 deletions(-)
create mode 100644 drivers/target/iscsi/iscsi_target_device.c
create mode 100644 drivers/target/iscsi/iscsi_target_device.h
create mode 100644 drivers/target/iscsi/iscsi_target_tpg.c
create mode 100644 drivers/target/iscsi/iscsi_target_tpg.h

diff --git a/drivers/target/iscsi/iscsi_target_device.c b/drivers/target/iscsi/iscsi_target_device.c
new file mode 100644
index 0000000..07020fe
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_device.c
@@ -0,0 +1,128 @@
+/*******************************************************************************
+ * This file contains the iSCSI Virtual Device and Disk Transport
+ * agnostic related functions.
+ *
+ * Copyright (c) 2003, 2004, 2005 PyX Technologies, Inc.
+ * Copyright (c) 2005-2006 SBE, Inc. All Rights Reserved.
+ © Copyright 2007-2011 RisingTide Systems LLC.
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ *
+ * 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 <linux/slab.h>
+#include <linux/spinlock.h>
+#include <target/target_core_base.h>
+#include <target/target_core_device.h>
+#include <target/target_core_transport.h>
+
+#include "iscsi_debug.h"
+#include "iscsi_target_core.h"
+#include "iscsi_target_device.h"
+#include "iscsi_target_tpg.h"
+#include "iscsi_target_util.h"
+
+/* iscsi_get_lun():
+ *
+ *
+ */
+int iscsi_get_lun_for_tmr(
+ struct iscsi_cmd *cmd,
+ u64 lun)
+{
+ struct iscsi_conn *conn = CONN(cmd);
+ struct iscsi_portal_group *tpg = ISCSI_TPG_C(conn);
+ u32 unpacked_lun;
+
+ unpacked_lun = iscsi_unpack_lun((unsigned char *)&lun);
+ if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
+ printk(KERN_ERR "iSCSI LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG"
+ "-1: %u for Target Portal Group: %hu\n", unpacked_lun,
+ TRANSPORT_MAX_LUNS_PER_TPG-1, tpg->tpgt);
+ return -1;
+ }
+
+ return transport_get_lun_for_tmr(SE_CMD(cmd), unpacked_lun);
+}
+
+/* iscsi_get_lun_for_cmd():
+ *
+ * Returns (0) on success
+ * Returns (< 0) on failure
+ */
+int iscsi_get_lun_for_cmd(
+ struct iscsi_cmd *cmd,
+ unsigned char *cdb,
+ u64 lun)
+{
+ struct iscsi_conn *conn = CONN(cmd);
+ struct iscsi_portal_group *tpg = ISCSI_TPG_C(conn);
+ u32 unpacked_lun;
+
+ unpacked_lun = iscsi_unpack_lun((unsigned char *)&lun);
+ if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
+ printk(KERN_ERR "iSCSI LUN: %u exceeds TRANSPORT_MAX_LUNS_PER_TPG"
+ "-1: %u for Target Portal Group: %hu\n", unpacked_lun,
+ TRANSPORT_MAX_LUNS_PER_TPG-1, tpg->tpgt);
+ return -1;
+ }
+
+ return transport_get_lun_for_cmd(SE_CMD(cmd), cdb, unpacked_lun);
+}
+
+/* iscsi_determine_maxcmdsn():
+ *
+ *
+ */
+void iscsi_determine_maxcmdsn(struct iscsi_session *sess)
+{
+ struct se_node_acl *se_nacl;
+
+ /*
+ * This is a discovery session, the single queue slot was already
+ * assigned in iscsi_login_zero_tsih(). Since only Logout and
+ * Text Opcodes are allowed during discovery we do not have to worry
+ * about the HBA's queue depth here.
+ */
+ if (SESS_OPS(sess)->SessionType)
+ return;
+
+ se_nacl = sess->se_sess->se_node_acl;
+
+ /*
+ * This is a normal session, set the Session's CmdSN window to the
+ * struct se_node_acl->queue_depth. The value in struct se_node_acl->queue_depth
+ * has already been validated as a legal value in
+ * core_set_queue_depth_for_node().
+ */
+ sess->cmdsn_window = se_nacl->queue_depth;
+ sess->max_cmd_sn = (sess->max_cmd_sn + se_nacl->queue_depth) - 1;
+}
+
+/* iscsi_increment_maxcmdsn();
+ *
+ *
+ */
+void iscsi_increment_maxcmdsn(struct iscsi_cmd *cmd, struct iscsi_session *sess)
+{
+ if (cmd->immediate_cmd || cmd->maxcmdsn_inc)
+ return;
+
+ cmd->maxcmdsn_inc = 1;
+
+ spin_lock(&sess->cmdsn_lock);
+ sess->max_cmd_sn += 1;
+ TRACE(TRACE_ISCSI, "Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn);
+ spin_unlock(&sess->cmdsn_lock);
+}
diff --git a/drivers/target/iscsi/iscsi_target_device.h b/drivers/target/iscsi/iscsi_target_device.h
new file mode 100644
index 0000000..f69cf52
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_device.h
@@ -0,0 +1,9 @@
+#ifndef ISCSI_TARGET_DEVICE_H
+#define ISCSI_TARGET_DEVICE_H
+
+extern int iscsi_get_lun_for_tmr(struct iscsi_cmd *, u64);
+extern int iscsi_get_lun_for_cmd(struct iscsi_cmd *, unsigned char *, u64);
+extern void iscsi_determine_maxcmdsn(struct iscsi_session *);
+extern void iscsi_increment_maxcmdsn(struct iscsi_cmd *, struct iscsi_session *);
+
+#endif /* ISCSI_TARGET_DEVICE_H */
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c
new file mode 100644
index 0000000..0cba462
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_tpg.c
@@ -0,0 +1,1165 @@
+/*******************************************************************************
+ * This file contains iSCSI Target Portal Group related functions.
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005 PyX Technologies, Inc.
+ * Copyright (c) 2005, 2006, 2007 SBE, Inc.
+ * © Copyright 2007-2011 RisingTide Systems LLC.
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ *
+ * 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 <linux/timer.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/ctype.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
+#include <target/target_core_base.h>
+#include <target/target_core_transport.h>
+#include <target/target_core_fabric_ops.h>
+#include <target/target_core_configfs.h>
+#include <target/target_core_tpg.h>
+
+#include "iscsi_debug.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_parameters.h"
+
+char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return &tpg->tpg_tiqn->tiqn[0];
+}
+
+u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return tpg->tpgt;
+}
+
+u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
+}
+
+int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
+}
+
+int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
+}
+
+int lio_tpg_check_demo_mode_write_protect(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
+}
+
+int lio_tpg_check_prod_mode_write_protect(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
+}
+
+struct se_node_acl *lio_tpg_alloc_fabric_acl(
+ struct se_portal_group *se_tpg)
+{
+ struct iscsi_node_acl *acl;
+
+ acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
+ if (!(acl)) {
+ printk(KERN_ERR "Unable to allocate memory for struct iscsi_node_acl\n");
+ return NULL;
+ }
+
+ return &acl->se_node_acl;
+}
+
+void lio_tpg_release_fabric_acl(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_acl)
+{
+ struct iscsi_node_acl *acl = container_of(se_acl,
+ struct iscsi_node_acl, se_node_acl);
+ kfree(acl);
+}
+
+/*
+ * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
+ *
+ * Also, this function calls iscsi_inc_session_usage_count() on the
+ * struct iscsi_session in question.
+ */
+int lio_tpg_shutdown_session(struct se_session *se_sess)
+{
+ struct iscsi_session *sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+
+ spin_lock(&sess->conn_lock);
+ if (atomic_read(&sess->session_fall_back_to_erl0) ||
+ atomic_read(&sess->session_logout) ||
+ (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
+ spin_unlock(&sess->conn_lock);
+ return 0;
+ }
+ atomic_set(&sess->session_reinstatement, 1);
+ spin_unlock(&sess->conn_lock);
+
+ iscsi_inc_session_usage_count(sess);
+ iscsi_stop_time2retain_timer(sess);
+
+ return 1;
+}
+
+/*
+ * Calls iscsi_dec_session_usage_count() as inverse of
+ * lio_tpg_shutdown_session()
+ */
+void lio_tpg_close_session(struct se_session *se_sess)
+{
+ struct iscsi_session *sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+ /*
+ * If the iSCSI Session for the iSCSI Initiator Node exists,
+ * forcefully shutdown the iSCSI NEXUS.
+ */
+ iscsi_stop_session(sess, 1, 1);
+ iscsi_dec_session_usage_count(sess);
+ iscsi_close_session(sess);
+}
+
+void lio_tpg_stop_session(struct se_session *se_sess, int sess_sleep, int conn_sleep)
+{
+ struct iscsi_session *sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+
+ iscsi_stop_session(sess, sess_sleep, conn_sleep);
+}
+
+void lio_tpg_fall_back_to_erl0(struct se_session *se_sess)
+{
+ struct iscsi_session *sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
+
+ iscsi_fall_back_to_erl0(sess);
+}
+
+u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
+{
+ struct iscsi_portal_group *tpg =
+ (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
+
+ return tpg->tpg_tiqn->tiqn_index;
+}
+
+void lio_set_default_node_attributes(struct se_node_acl *se_acl)
+{
+ struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
+ se_node_acl);
+
+ ISCSI_NODE_ATTRIB(acl)->nacl = acl;
+ iscsi_set_default_node_attribues(acl);
+}
+
+struct iscsi_portal_group *core_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt)
+{
+ struct iscsi_portal_group *tpg;
+
+ tpg = kmem_cache_zalloc(lio_tpg_cache, GFP_KERNEL);
+ if (!(tpg)) {
+ printk(KERN_ERR "Unable to get tpg from lio_tpg_cache\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->g_tpg_list);
+ INIT_LIST_HEAD(&tpg->tpg_list);
+ sema_init(&tpg->tpg_access_sem, 1);
+ 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 iscsi_set_default_tpg_attribs(struct iscsi_portal_group *);
+
+int core_load_discovery_tpg(void)
+{
+ struct iscsi_param *param;
+ struct iscsi_portal_group *tpg;
+ int ret;
+
+ tpg = core_alloc_portal_group(NULL, 1);
+ if (!(tpg)) {
+ printk(KERN_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, (void *)tpg,
+ TRANSPORT_TPG_TYPE_DISCOVERY);
+ if (ret < 0) {
+ kfree(tpg);
+ return -1;
+ }
+
+ tpg->sid = 1; /* First Assigned LIO Session ID */
+ iscsi_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);
+
+ iscsi_global->discovery_tpg = tpg;
+ printk(KERN_INFO "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 core_release_discovery_tpg(void)
+{
+ struct iscsi_portal_group *tpg = iscsi_global->discovery_tpg;
+
+ if (!(tpg))
+ return;
+
+ core_tpg_deregister(&tpg->tpg_se_tpg);
+
+ kmem_cache_free(lio_tpg_cache, tpg);
+ iscsi_global->discovery_tpg = NULL;
+}
+
+struct iscsi_portal_group *core_get_tpg_from_np(
+ struct iscsi_tiqn *tiqn,
+ struct iscsi_np *np)
+{
+ 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_FREE) {
+ 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) {
+ 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 iscsi_get_tpg(
+ struct iscsi_portal_group *tpg)
+{
+ int ret;
+
+ ret = down_interruptible(&tpg->tpg_access_sem);
+ return ((ret != 0) || signal_pending(current)) ? -1 : 0;
+}
+
+/* iscsi_put_tpg():
+ *
+ *
+ */
+void iscsi_put_tpg(struct iscsi_portal_group *tpg)
+{
+ up(&tpg->tpg_access_sem);
+}
+
+static void iscsi_clear_tpg_np_login_thread(
+ struct iscsi_tpg_np *tpg_np,
+ struct iscsi_portal_group *tpg,
+ int shutdown)
+{
+ if (!tpg_np->tpg_np) {
+ printk(KERN_ERR "struct iscsi_tpg_np->tpg_np is NULL!\n");
+ return;
+ }
+
+ core_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg, shutdown);
+ return;
+}
+
+/* iscsi_clear_tpg_np_login_threads():
+ *
+ *
+ */
+void iscsi_clear_tpg_np_login_threads(
+ struct iscsi_portal_group *tpg,
+ int 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) {
+ printk(KERN_ERR "struct iscsi_tpg_np->tpg_np is NULL!\n");
+ continue;
+ }
+ spin_unlock(&tpg->tpg_np_lock);
+ iscsi_clear_tpg_np_login_thread(tpg_np, tpg, shutdown);
+ spin_lock(&tpg->tpg_np_lock);
+ }
+ spin_unlock(&tpg->tpg_np_lock);
+}
+
+/* iscsi_tpg_dump_params():
+ *
+ *
+ */
+void iscsi_tpg_dump_params(struct iscsi_portal_group *tpg)
+{
+ iscsi_print_params(tpg->param_list);
+}
+
+/* iscsi_tpg_free_network_portals():
+ *
+ *
+ */
+static void iscsi_tpg_free_network_portals(struct iscsi_portal_group *tpg)
+{
+ struct iscsi_np *np;
+ struct iscsi_tpg_np *tpg_np, *tpg_np_t;
+ unsigned char buf_ipv4[IPV4_BUF_SIZE], *ip;
+
+ spin_lock(&tpg->tpg_np_lock);
+ list_for_each_entry_safe(tpg_np, tpg_np_t, &tpg->tpg_gnp_list,
+ tpg_np_list) {
+ np = tpg_np->tpg_np;
+ list_del(&tpg_np->tpg_np_list);
+ tpg->num_tpg_nps--;
+ tpg->tpg_tiqn->tiqn_num_tpg_nps--;
+
+ if (np->np_net_size == IPV6_ADDRESS_SPACE)
+ ip = &np->np_ipv6[0];
+ else {
+ memset(buf_ipv4, 0, IPV4_BUF_SIZE);
+ iscsi_ntoa2(buf_ipv4, np->np_ipv4);
+ ip = &buf_ipv4[0];
+ }
+
+ printk(KERN_INFO "CORE[%s] - Removed Network Portal: %s:%hu,%hu"
+ " on %s on network device: %s\n", tpg->tpg_tiqn->tiqn,
+ ip, np->np_port, tpg->tpgt,
+ (np->np_network_transport == ISCSI_TCP) ?
+ "TCP" : "SCTP", (strlen(np->np_net_dev)) ?
+ (char *)np->np_net_dev : "None");
+
+ tpg_np->tpg_np = NULL;
+ kfree(tpg_np);
+ spin_unlock(&tpg->tpg_np_lock);
+
+ spin_lock(&np->np_state_lock);
+ np->np_exports--;
+ printk(KERN_INFO "CORE[%s]_TPG[%hu] - Decremented np_exports to %u\n",
+ tpg->tpg_tiqn->tiqn, tpg->tpgt, np->np_exports);
+ spin_unlock(&np->np_state_lock);
+
+ spin_lock(&tpg->tpg_np_lock);
+ }
+ spin_unlock(&tpg->tpg_np_lock);
+}
+
+/* iscsi_set_default_tpg_attribs():
+ *
+ *
+ */
+static void iscsi_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->cache_core_nps = TA_CACHE_CORE_NPS;
+}
+
+/* iscsi_tpg_add_portal_group():
+ *
+ *
+ */
+int iscsi_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
+{
+ if (tpg->tpg_state != TPG_STATE_FREE) {
+ printk(KERN_ERR "Unable to add iSCSI Target Portal Group: %d"
+ " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
+ return -EEXIST;
+ }
+ iscsi_set_default_tpg_attribs(tpg);
+
+ if (iscsi_create_default_params(&tpg->param_list) < 0)
+ goto err_out;
+
+ ISCSI_TPG_ATTRIB(tpg)->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++;
+ printk(KERN_INFO "CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
+ tiqn->tiqn, tpg->tpgt);
+ spin_unlock(&tiqn->tiqn_tpg_lock);
+
+ spin_lock_bh(&iscsi_global->g_tpg_lock);
+ list_add_tail(&tpg->g_tpg_list, &iscsi_global->g_tpg_list);
+ spin_unlock_bh(&iscsi_global->g_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 iscsi_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);
+
+ iscsi_clear_tpg_np_login_threads(tpg, 1);
+
+ if (iscsi_release_sessions_for_tpg(tpg, force) < 0) {
+ printk(KERN_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);
+ iscsi_tpg_free_network_portals(tpg);
+
+ spin_lock_bh(&iscsi_global->g_tpg_lock);
+ list_del(&tpg->g_tpg_list);
+ spin_unlock_bh(&iscsi_global->g_tpg_lock);
+
+ 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);
+
+ printk(KERN_INFO "CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n",
+ tiqn->tiqn, tpg->tpgt);
+
+ kmem_cache_free(lio_tpg_cache, tpg);
+ return 0;
+}
+
+/* iscsi_tpg_enable_portal_group():
+ *
+ *
+ */
+int iscsi_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
+{
+ struct iscsi_param *param;
+ struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
+
+ spin_lock(&tpg->tpg_state_lock);
+ if (tpg->tpg_state == TPG_STATE_ACTIVE) {
+ printk(KERN_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 -ENOMEM;
+ }
+
+ if (ISCSI_TPG_ATTRIB(tpg)->authentication) {
+ if (!strcmp(param->value, NONE))
+ if (iscsi_update_param_value(param, CHAP) < 0) {
+ spin_unlock(&tpg->tpg_state_lock);
+ return -ENOMEM;
+ }
+ if (iscsi_ta_authentication(tpg, 1) < 0) {
+ spin_unlock(&tpg->tpg_state_lock);
+ return -ENOMEM;
+ }
+ }
+
+ tpg->tpg_state = TPG_STATE_ACTIVE;
+ spin_unlock(&tpg->tpg_state_lock);
+
+ spin_lock(&tiqn->tiqn_tpg_lock);
+ tiqn->tiqn_active_tpgs++;
+ printk(KERN_INFO "iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n",
+ tpg->tpgt);
+ spin_unlock(&tiqn->tiqn_tpg_lock);
+
+ return 0;
+}
+
+/* iscsi_tpg_disable_portal_group():
+ *
+ *
+ */
+int iscsi_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) {
+ printk(KERN_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);
+
+ iscsi_clear_tpg_np_login_threads(tpg, 0);
+
+ if (iscsi_release_sessions_for_tpg(tpg, force) < 0) {
+ spin_lock(&tpg->tpg_state_lock);
+ tpg->tpg_state = old_state;
+ spin_unlock(&tpg->tpg_state_lock);
+ printk(KERN_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 == iscsi_global->discovery_tpg))
+ return 0;
+
+ spin_lock(&tiqn->tiqn_tpg_lock);
+ tiqn->tiqn_active_tpgs--;
+ printk(KERN_INFO "iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
+ tpg->tpgt);
+ spin_unlock(&tiqn->tiqn_tpg_lock);
+
+ return 0;
+}
+
+struct iscsi_node_attrib *iscsi_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 *iscsi_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;
+}
+
+/* iscsi_tpg_add_network_portal():
+ *
+ *
+ */
+struct iscsi_tpg_np *iscsi_tpg_add_network_portal(
+ struct iscsi_portal_group *tpg,
+ struct iscsi_np_addr *np_addr,
+ struct iscsi_tpg_np *tpg_np_parent,
+ int network_transport)
+{
+ struct iscsi_np *np;
+ struct iscsi_tpg_np *tpg_np;
+ char *ip_buf;
+ void *ip;
+ int ret = 0;
+ unsigned char buf_ipv4[IPV4_BUF_SIZE];
+
+ if (np_addr->np_flags & NPF_NET_IPV6) {
+ ip_buf = (char *)&np_addr->np_ipv6[0];
+ ip = (void *)&np_addr->np_ipv6[0];
+ } else {
+ memset(buf_ipv4, 0, IPV4_BUF_SIZE);
+ iscsi_ntoa2(buf_ipv4, np_addr->np_ipv4);
+ ip_buf = &buf_ipv4[0];
+ ip = (void *)&np_addr->np_ipv4;
+ }
+ /*
+ * If the Network Portal does not currently exist, start it up now.
+ */
+ np = core_get_np(ip, np_addr->np_port, network_transport);
+ if (!(np)) {
+ np = core_add_np(np_addr, network_transport, &ret);
+ if (!(np))
+ return ERR_PTR(ret);
+ }
+
+ tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
+ if (!(tpg_np)) {
+ printk(KERN_ERR "Unable to allocate memory for"
+ " struct iscsi_tpg_np.\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ tpg_np->tpg_np_index = iscsi_get_new_index(ISCSI_PORTAL_INDEX);
+ 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);
+ tpg_np->tpg_np = 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);
+ }
+
+ printk(KERN_INFO "CORE[%s] - Added Network Portal: %s:%hu,%hu on %s on"
+ " network device: %s\n", tpg->tpg_tiqn->tiqn, ip_buf,
+ np->np_port, tpg->tpgt,
+ (np->np_network_transport == ISCSI_TCP) ?
+ "TCP" : "SCTP", (strlen(np->np_net_dev)) ?
+ (char *)np->np_net_dev : "None");
+
+ spin_lock(&np->np_state_lock);
+ np->np_exports++;
+ printk(KERN_INFO "CORE[%s]_TPG[%hu] - Incremented np_exports to %u\n",
+ tpg->tpg_tiqn->tiqn, tpg->tpgt, np->np_exports);
+ spin_unlock(&np->np_state_lock);
+
+ return tpg_np;
+}
+
+static int iscsi_tpg_release_np(
+ struct iscsi_tpg_np *tpg_np,
+ struct iscsi_portal_group *tpg,
+ struct iscsi_np *np)
+{
+ char *ip;
+ char buf_ipv4[IPV4_BUF_SIZE];
+
+ if (np->np_net_size == IPV6_ADDRESS_SPACE)
+ ip = &np->np_ipv6[0];
+ else {
+ memset(buf_ipv4, 0, IPV4_BUF_SIZE);
+ iscsi_ntoa2(buf_ipv4, np->np_ipv4);
+ ip = &buf_ipv4[0];
+ }
+
+ iscsi_clear_tpg_np_login_thread(tpg_np, tpg, 1);
+
+ printk(KERN_INFO "CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s"
+ " on network device: %s\n", tpg->tpg_tiqn->tiqn, ip,
+ np->np_port, tpg->tpgt,
+ (np->np_network_transport == ISCSI_TCP) ?
+ "TCP" : "SCTP", (strlen(np->np_net_dev)) ?
+ (char *)np->np_net_dev : "None");
+
+ tpg_np->tpg_np = NULL;
+ tpg_np->tpg = NULL;
+ kfree(tpg_np);
+
+ /*
+ * Shutdown Network Portal when last TPG reference is released.
+ */
+ spin_lock(&np->np_state_lock);
+ if ((--np->np_exports == 0) && !(ISCSI_TPG_ATTRIB(tpg)->cache_core_nps))
+ atomic_set(&np->np_shutdown, 1);
+ printk(KERN_INFO "CORE[%s]_TPG[%hu] - Decremented np_exports to %u\n",
+ tpg->tpg_tiqn->tiqn, tpg->tpgt, np->np_exports);
+ spin_unlock(&np->np_state_lock);
+
+ if (atomic_read(&np->np_shutdown))
+ core_del_np(np);
+
+ return 0;
+}
+
+/* iscsi_tpg_del_network_portal():
+ *
+ *
+ */
+int iscsi_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)) {
+ printk(KERN_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 = iscsi_tpg_del_network_portal(tpg, tpg_np_child);
+ if (ret < 0)
+ printk(KERN_ERR "iscsi_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 iscsi_tpg_release_np(tpg_np, tpg, np);
+}
+
+/* iscsi_tpg_set_initiator_node_queue_depth():
+ *
+ *
+ */
+int iscsi_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);
+}
+
+/* iscsi_ta_authentication():
+ *
+ *
+ */
+int iscsi_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)) {
+ printk(KERN_ERR "Illegal value for authentication parameter:"
+ " %u, ignoring request.\n", authentication);
+ return -1;
+ }
+
+ 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;
+ printk(KERN_INFO "%s iSCSI Authentication Methods for TPG: %hu.\n",
+ a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
+
+ return 0;
+}
+
+/* iscsi_ta_login_timeout():
+ *
+ *
+ */
+int iscsi_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) {
+ printk(KERN_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) {
+ printk(KERN_ERR "Requested Logout Timeout %u smaller than"
+ " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
+ return -EINVAL;
+ }
+
+ a->login_timeout = login_timeout;
+ printk(KERN_INFO "Set Logout Timeout to %u for Target Portal Group"
+ " %hu\n", a->login_timeout, tpg->tpgt);
+
+ return 0;
+}
+
+/* iscsi_ta_netif_timeout():
+ *
+ *
+ */
+int iscsi_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) {
+ printk(KERN_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) {
+ printk(KERN_ERR "Requested Network Interface Timeout %u smaller"
+ " than minimum %u\n", netif_timeout,
+ TA_NETIF_TIMEOUT_MIN);
+ return -EINVAL;
+ }
+
+ a->netif_timeout = netif_timeout;
+ printk(KERN_INFO "Set Network Interface Timeout to %u for"
+ " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
+
+ return 0;
+}
+
+int iscsi_ta_generate_node_acls(
+ struct iscsi_portal_group *tpg,
+ u32 flag)
+{
+ struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
+
+ if ((flag != 0) && (flag != 1)) {
+ printk(KERN_ERR "Illegal value %d\n", flag);
+ return -EINVAL;
+ }
+
+ a->generate_node_acls = flag;
+ printk(KERN_INFO "iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
+ tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
+
+ return 0;
+}
+
+int iscsi_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) {
+ printk(KERN_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) {
+ printk(KERN_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;
+ printk(KERN_INFO "iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
+ tpg->tpgt, a->default_cmdsn_depth);
+
+ return 0;
+}
+
+int iscsi_ta_cache_dynamic_acls(
+ struct iscsi_portal_group *tpg,
+ u32 flag)
+{
+ struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
+
+ if ((flag != 0) && (flag != 1)) {
+ printk(KERN_ERR "Illegal value %d\n", flag);
+ return -EINVAL;
+ }
+
+ a->cache_dynamic_acls = flag;
+ printk(KERN_INFO "iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
+ " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
+ "Enabled" : "Disabled");
+
+ return 0;
+}
+
+int iscsi_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)) {
+ printk(KERN_ERR "Illegal value %d\n", flag);
+ return -EINVAL;
+ }
+
+ a->demo_mode_write_protect = flag;
+ printk(KERN_INFO "iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
+ tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
+
+ return 0;
+}
+
+int iscsi_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)) {
+ printk(KERN_ERR "Illegal value %d\n", flag);
+ return -EINVAL;
+ }
+
+ a->prod_mode_write_protect = flag;
+ printk(KERN_INFO "iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
+ " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
+ "ON" : "OFF");
+
+ return 0;
+}
+
+void iscsi_disable_tpgs(struct iscsi_tiqn *tiqn)
+{
+ struct iscsi_portal_group *tpg;
+
+ 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_FREE) ||
+ (tpg->tpg_state == TPG_STATE_INACTIVE)) {
+ spin_unlock(&tpg->tpg_state_lock);
+ continue;
+ }
+ spin_unlock(&tpg->tpg_state_lock);
+ spin_unlock(&tiqn->tiqn_tpg_lock);
+
+ iscsi_tpg_disable_portal_group(tpg, 1);
+
+ spin_lock(&tiqn->tiqn_tpg_lock);
+ }
+ spin_unlock(&tiqn->tiqn_tpg_lock);
+}
+
+/* iscsi_disable_all_tpgs():
+ *
+ *
+ */
+void iscsi_disable_all_tpgs(void)
+{
+ struct iscsi_tiqn *tiqn;
+
+ spin_lock(&iscsi_global->tiqn_lock);
+ list_for_each_entry(tiqn, &iscsi_global->g_tiqn_list, tiqn_list) {
+ spin_unlock(&iscsi_global->tiqn_lock);
+ iscsi_disable_tpgs(tiqn);
+ spin_lock(&iscsi_global->tiqn_lock);
+ }
+ spin_unlock(&iscsi_global->tiqn_lock);
+}
+
+void iscsi_remove_tpgs(struct iscsi_tiqn *tiqn)
+{
+ struct iscsi_portal_group *tpg, *tpg_tmp;
+
+ spin_lock(&tiqn->tiqn_tpg_lock);
+ list_for_each_entry_safe(tpg, tpg_tmp, &tiqn->tiqn_tpg_list, tpg_list) {
+
+ spin_lock(&tpg->tpg_state_lock);
+ if (tpg->tpg_state == TPG_STATE_FREE) {
+ spin_unlock(&tpg->tpg_state_lock);
+ continue;
+ }
+ spin_unlock(&tpg->tpg_state_lock);
+ spin_unlock(&tiqn->tiqn_tpg_lock);
+
+ iscsi_tpg_del_portal_group(tiqn, tpg, 1);
+
+ spin_lock(&tiqn->tiqn_tpg_lock);
+ }
+ spin_unlock(&tiqn->tiqn_tpg_lock);
+}
+
+/* iscsi_remove_all_tpgs():
+ *
+ *
+ */
+void iscsi_remove_all_tpgs(void)
+{
+ struct iscsi_tiqn *tiqn;
+
+ spin_lock(&iscsi_global->tiqn_lock);
+ list_for_each_entry(tiqn, &iscsi_global->g_tiqn_list, tiqn_list) {
+ spin_unlock(&iscsi_global->tiqn_lock);
+ iscsi_remove_tpgs(tiqn);
+ spin_lock(&iscsi_global->tiqn_lock);
+ }
+ spin_unlock(&iscsi_global->tiqn_lock);
+}
diff --git a/drivers/target/iscsi/iscsi_target_tpg.h b/drivers/target/iscsi/iscsi_target_tpg.h
new file mode 100644
index 0000000..088fcd7
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_tpg.h
@@ -0,0 +1,70 @@
+#ifndef ISCSI_TARGET_TPG_H
+#define ISCSI_TARGET_TPG_H
+
+extern char *lio_tpg_get_endpoint_wwn(struct se_portal_group *);
+extern u16 lio_tpg_get_tag(struct se_portal_group *);
+extern u32 lio_tpg_get_default_depth(struct se_portal_group *);
+extern int lio_tpg_check_demo_mode(struct se_portal_group *);
+extern int lio_tpg_check_demo_mode_cache(struct se_portal_group *);
+extern int lio_tpg_check_demo_mode_write_protect(struct se_portal_group *);
+extern int lio_tpg_check_prod_mode_write_protect(struct se_portal_group *);
+extern struct se_node_acl *lio_tpg_alloc_fabric_acl(struct se_portal_group *);
+extern void lio_tpg_release_fabric_acl(struct se_portal_group *,
+ struct se_node_acl *);
+extern int lio_tpg_shutdown_session(struct se_session *);
+extern void lio_tpg_close_session(struct se_session *);
+extern void lio_tpg_stop_session(struct se_session *, int, int);
+extern void lio_tpg_fall_back_to_erl0(struct se_session *);
+extern u32 lio_tpg_get_inst_index(struct se_portal_group *);
+extern void lio_set_default_node_attributes(struct se_node_acl *);
+
+extern struct iscsi_portal_group *core_alloc_portal_group(struct iscsi_tiqn *, u16);
+extern int core_load_discovery_tpg(void);
+extern void core_release_discovery_tpg(void);
+extern struct iscsi_portal_group *core_get_tpg_from_np(struct iscsi_tiqn *,
+ struct iscsi_np *);
+extern int iscsi_get_tpg(struct iscsi_portal_group *);
+extern void iscsi_put_tpg(struct iscsi_portal_group *);
+extern void iscsi_clear_tpg_np_login_threads(struct iscsi_portal_group *, int);
+extern void iscsi_tpg_dump_params(struct iscsi_portal_group *);
+extern int iscsi_tpg_add_portal_group(struct iscsi_tiqn *, struct iscsi_portal_group *);
+extern int iscsi_tpg_del_portal_group(struct iscsi_tiqn *, struct iscsi_portal_group *,
+ int);
+extern int iscsi_tpg_enable_portal_group(struct iscsi_portal_group *);
+extern int iscsi_tpg_disable_portal_group(struct iscsi_portal_group *, int);
+extern struct iscsi_node_acl *iscsi_tpg_add_initiator_node_acl(
+ struct iscsi_portal_group *, const char *, u32);
+extern void iscsi_tpg_del_initiator_node_acl(struct iscsi_portal_group *,
+ struct se_node_acl *);
+extern struct iscsi_node_attrib *iscsi_tpg_get_node_attrib(struct iscsi_session *);
+extern void iscsi_tpg_del_external_nps(struct iscsi_tpg_np *);
+extern struct iscsi_tpg_np *iscsi_tpg_locate_child_np(struct iscsi_tpg_np *, int);
+extern struct iscsi_tpg_np *iscsi_tpg_add_network_portal(struct iscsi_portal_group *,
+ struct iscsi_np_addr *, struct iscsi_tpg_np *, int);
+extern int iscsi_tpg_del_network_portal(struct iscsi_portal_group *,
+ struct iscsi_tpg_np *);
+extern int iscsi_tpg_set_initiator_node_queue_depth(struct iscsi_portal_group *,
+ unsigned char *, u32, int);
+extern int iscsi_ta_authentication(struct iscsi_portal_group *, u32);
+extern int iscsi_ta_login_timeout(struct iscsi_portal_group *, u32);
+extern int iscsi_ta_netif_timeout(struct iscsi_portal_group *, u32);
+extern int iscsi_ta_generate_node_acls(struct iscsi_portal_group *, u32);
+extern int iscsi_ta_default_cmdsn_depth(struct iscsi_portal_group *, u32);
+extern int iscsi_ta_cache_dynamic_acls(struct iscsi_portal_group *, u32);
+extern int iscsi_ta_demo_mode_write_protect(struct iscsi_portal_group *, u32);
+extern int iscsi_ta_prod_mode_write_protect(struct iscsi_portal_group *, u32);
+extern void iscsi_disable_tpgs(struct iscsi_tiqn *);
+extern void iscsi_disable_all_tpgs(void);
+extern void iscsi_remove_tpgs(struct iscsi_tiqn *);
+extern void iscsi_remove_all_tpgs(void);
+
+extern struct iscsi_global *iscsi_global;
+extern struct target_fabric_configfs *lio_target_fabric_configfs;
+extern struct kmem_cache *lio_tpg_cache;
+
+extern int iscsi_close_session(struct iscsi_session *);
+extern int iscsi_free_session(struct iscsi_session *);
+extern int iscsi_release_sessions_for_tpg(struct iscsi_portal_group *, int);
+extern int iscsi_ta_authentication(struct iscsi_portal_group *, u32);
+
+#endif /* ISCSI_TARGET_TPG_H */
--
1.7.4.1