kernel-fxtec-pro1x/drivers/target/iscsi/iscsi_target_tpg.c
Nicholas Bellinger 4c76251e8e target: Update copyright ownership/year information to 2013
Update copyright ownership/year information for target-core,
loopback, iscsi-target, tcm_qla2xx, vhost and iser-target.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-09-10 20:23:36 -07:00

822 lines
20 KiB
C

/*******************************************************************************
* 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_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) {
*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;
}
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;
}
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;
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++;
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 (ISCSI_TPG_ATTRIB(tpg)->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;
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;
}