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linux/drivers/target/iscsi/iscsi_target_configfs.c

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/*******************************************************************************
* This file contains the configfs implementation for iSCSI Target mode
* from the LIO-Target Project.
*
* \u00a9 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/configfs.h>
#include <linux/export.h>
#include <target/target_core_base.h>
#include <target/target_core_transport.h>
#include <target/target_core_fabric_ops.h>
#include <target/target_core_fabric_configfs.h>
#include <target/target_core_fabric_lib.h>
#include <target/target_core_device.h>
#include <target/target_core_tpg.h>
#include <target/target_core_configfs.h>
#include <target/configfs_macros.h>
#include "iscsi_target_core.h"
#include "iscsi_target_parameters.h"
#include "iscsi_target_device.h"
#include "iscsi_target_erl0.h"
#include "iscsi_target_nodeattrib.h"
#include "iscsi_target_tpg.h"
#include "iscsi_target_util.h"
#include "iscsi_target.h"
#include "iscsi_target_stat.h"
#include "iscsi_target_configfs.h"
struct target_fabric_configfs *lio_target_fabric_configfs;
struct lio_target_configfs_attribute {
struct configfs_attribute attr;
ssize_t (*show)(void *, char *);
ssize_t (*store)(void *, const char *, size_t);
};
struct iscsi_portal_group *lio_get_tpg_from_tpg_item(
struct config_item *item,
struct iscsi_tiqn **tiqn_out)
{
struct se_portal_group *se_tpg = container_of(to_config_group(item),
struct se_portal_group, tpg_group);
struct iscsi_portal_group *tpg =
(struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
int ret;
if (!tpg) {
pr_err("Unable to locate struct iscsi_portal_group "
"pointer\n");
return NULL;
}
ret = iscsit_get_tpg(tpg);
if (ret < 0)
return NULL;
*tiqn_out = tpg->tpg_tiqn;
return tpg;
}
/* Start items for lio_target_portal_cit */
static ssize_t lio_target_np_show_sctp(
struct se_tpg_np *se_tpg_np,
char *page)
{
struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
struct iscsi_tpg_np, se_tpg_np);
struct iscsi_tpg_np *tpg_np_sctp;
ssize_t rb;
tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
if (tpg_np_sctp)
rb = sprintf(page, "1\n");
else
rb = sprintf(page, "0\n");
return rb;
}
static ssize_t lio_target_np_store_sctp(
struct se_tpg_np *se_tpg_np,
const char *page,
size_t count)
{
struct iscsi_np *np;
struct iscsi_portal_group *tpg;
struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
struct iscsi_tpg_np, se_tpg_np);
struct iscsi_tpg_np *tpg_np_sctp = NULL;
char *endptr;
u32 op;
int ret;
op = simple_strtoul(page, &endptr, 0);
if ((op != 1) && (op != 0)) {
pr_err("Illegal value for tpg_enable: %u\n", op);
return -EINVAL;
}
np = tpg_np->tpg_np;
if (!np) {
pr_err("Unable to locate struct iscsi_np from"
" struct iscsi_tpg_np\n");
return -EINVAL;
}
tpg = tpg_np->tpg;
if (iscsit_get_tpg(tpg) < 0)
return -EINVAL;
if (op) {
/*
* Use existing np->np_sockaddr for SCTP network portal reference
*/
tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
np->np_ip, tpg_np, ISCSI_SCTP_TCP);
if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
goto out;
} else {
tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
if (!tpg_np_sctp)
goto out;
ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
if (ret < 0)
goto out;
}
iscsit_put_tpg(tpg);
return count;
out:
iscsit_put_tpg(tpg);
return -EINVAL;
}
TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_portal_attrs[] = {
&lio_target_np_sctp.attr,
NULL,
};
/* Stop items for lio_target_portal_cit */
/* Start items for lio_target_np_cit */
#define MAX_PORTAL_LEN 256
struct se_tpg_np *lio_target_call_addnptotpg(
struct se_portal_group *se_tpg,
struct config_group *group,
const char *name)
{
struct iscsi_portal_group *tpg;
struct iscsi_tpg_np *tpg_np;
char *str, *str2, *ip_str, *port_str;
struct __kernel_sockaddr_storage sockaddr;
struct sockaddr_in *sock_in;
struct sockaddr_in6 *sock_in6;
unsigned long port;
int ret;
char buf[MAX_PORTAL_LEN + 1];
if (strlen(name) > MAX_PORTAL_LEN) {
pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
(int)strlen(name), MAX_PORTAL_LEN);
return ERR_PTR(-EOVERFLOW);
}
memset(buf, 0, MAX_PORTAL_LEN + 1);
snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
str = strstr(buf, "[");
if (str) {
const char *end;
str2 = strstr(str, "]");
if (!str2) {
pr_err("Unable to locate trailing \"]\""
" in IPv6 iSCSI network portal address\n");
return ERR_PTR(-EINVAL);
}
str++; /* Skip over leading "[" */
*str2 = '\0'; /* Terminate the IPv6 address */
str2++; /* Skip over the "]" */
port_str = strstr(str2, ":");
if (!port_str) {
pr_err("Unable to locate \":port\""
" in IPv6 iSCSI network portal address\n");
return ERR_PTR(-EINVAL);
}
*port_str = '\0'; /* Terminate string for IP */
port_str++; /* Skip over ":" */
ret = strict_strtoul(port_str, 0, &port);
if (ret < 0) {
pr_err("strict_strtoul() failed for port_str: %d\n", ret);
return ERR_PTR(ret);
}
sock_in6 = (struct sockaddr_in6 *)&sockaddr;
sock_in6->sin6_family = AF_INET6;
sock_in6->sin6_port = htons((unsigned short)port);
ret = in6_pton(str, IPV6_ADDRESS_SPACE,
(void *)&sock_in6->sin6_addr.in6_u, -1, &end);
if (ret <= 0) {
pr_err("in6_pton returned: %d\n", ret);
return ERR_PTR(-EINVAL);
}
} else {
str = ip_str = &buf[0];
port_str = strstr(ip_str, ":");
if (!port_str) {
pr_err("Unable to locate \":port\""
" in IPv4 iSCSI network portal address\n");
return ERR_PTR(-EINVAL);
}
*port_str = '\0'; /* Terminate string for IP */
port_str++; /* Skip over ":" */
ret = strict_strtoul(port_str, 0, &port);
if (ret < 0) {
pr_err("strict_strtoul() failed for port_str: %d\n", ret);
return ERR_PTR(ret);
}
sock_in = (struct sockaddr_in *)&sockaddr;
sock_in->sin_family = AF_INET;
sock_in->sin_port = htons((unsigned short)port);
sock_in->sin_addr.s_addr = in_aton(ip_str);
}
tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
ret = iscsit_get_tpg(tpg);
if (ret < 0)
return ERR_PTR(-EINVAL);
pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
" PORTAL: %s\n",
config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
tpg->tpgt, name);
/*
* Assume ISCSI_TCP by default. Other network portals for other
* iSCSI fabrics:
*
* Traditional iSCSI over SCTP (initial support)
* iSER/TCP (TODO, hardware available)
* iSER/SCTP (TODO, software emulation with osc-iwarp)
* iSER/IB (TODO, hardware available)
*
* can be enabled with atributes under
* sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
*
*/
tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
ISCSI_TCP);
if (IS_ERR(tpg_np)) {
iscsit_put_tpg(tpg);
return ERR_CAST(tpg_np);
}
pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
iscsit_put_tpg(tpg);
return &tpg_np->se_tpg_np;
}
static void lio_target_call_delnpfromtpg(
struct se_tpg_np *se_tpg_np)
{
struct iscsi_portal_group *tpg;
struct iscsi_tpg_np *tpg_np;
struct se_portal_group *se_tpg;
int ret;
tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
tpg = tpg_np->tpg;
ret = iscsit_get_tpg(tpg);
if (ret < 0)
return;
se_tpg = &tpg->tpg_se_tpg;
pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
" PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
if (ret < 0)
goto out;
pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
out:
iscsit_put_tpg(tpg);
}
/* End items for lio_target_np_cit */
/* Start items for lio_target_nacl_attrib_cit */
#define DEF_NACL_ATTRIB(name) \
static ssize_t iscsi_nacl_attrib_show_##name( \
struct se_node_acl *se_nacl, \
char *page) \
{ \
struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
se_node_acl); \
\
return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name); \
} \
\
static ssize_t iscsi_nacl_attrib_store_##name( \
struct se_node_acl *se_nacl, \
const char *page, \
size_t count) \
{ \
struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
se_node_acl); \
char *endptr; \
u32 val; \
int ret; \
\
val = simple_strtoul(page, &endptr, 0); \
ret = iscsit_na_##name(nacl, val); \
if (ret < 0) \
return ret; \
\
return count; \
}
#define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
/*
* Define iscsi_node_attrib_s_dataout_timeout
*/
DEF_NACL_ATTRIB(dataout_timeout);
NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
/*
* Define iscsi_node_attrib_s_dataout_timeout_retries
*/
DEF_NACL_ATTRIB(dataout_timeout_retries);
NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
/*
* Define iscsi_node_attrib_s_default_erl
*/
DEF_NACL_ATTRIB(default_erl);
NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
/*
* Define iscsi_node_attrib_s_nopin_timeout
*/
DEF_NACL_ATTRIB(nopin_timeout);
NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
/*
* Define iscsi_node_attrib_s_nopin_response_timeout
*/
DEF_NACL_ATTRIB(nopin_response_timeout);
NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
/*
* Define iscsi_node_attrib_s_random_datain_pdu_offsets
*/
DEF_NACL_ATTRIB(random_datain_pdu_offsets);
NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
/*
* Define iscsi_node_attrib_s_random_datain_seq_offsets
*/
DEF_NACL_ATTRIB(random_datain_seq_offsets);
NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
/*
* Define iscsi_node_attrib_s_random_r2t_offsets
*/
DEF_NACL_ATTRIB(random_r2t_offsets);
NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
&iscsi_nacl_attrib_dataout_timeout.attr,
&iscsi_nacl_attrib_dataout_timeout_retries.attr,
&iscsi_nacl_attrib_default_erl.attr,
&iscsi_nacl_attrib_nopin_timeout.attr,
&iscsi_nacl_attrib_nopin_response_timeout.attr,
&iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
&iscsi_nacl_attrib_random_datain_seq_offsets.attr,
&iscsi_nacl_attrib_random_r2t_offsets.attr,
NULL,
};
/* End items for lio_target_nacl_attrib_cit */
/* Start items for lio_target_nacl_auth_cit */
#define __DEF_NACL_AUTH_STR(prefix, name, flags) \
static ssize_t __iscsi_##prefix##_show_##name( \
struct iscsi_node_acl *nacl, \
char *page) \
{ \
struct iscsi_node_auth *auth = &nacl->node_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
return -EPERM; \
return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
} \
\
static ssize_t __iscsi_##prefix##_store_##name( \
struct iscsi_node_acl *nacl, \
const char *page, \
size_t count) \
{ \
struct iscsi_node_auth *auth = &nacl->node_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
return -EPERM; \
\
snprintf(auth->name, PAGE_SIZE, "%s", page); \
if (!strncmp("NULL", auth->name, 4)) \
auth->naf_flags &= ~flags; \
else \
auth->naf_flags |= flags; \
\
if ((auth->naf_flags & NAF_USERID_IN_SET) && \
(auth->naf_flags & NAF_PASSWORD_IN_SET)) \
auth->authenticate_target = 1; \
else \
auth->authenticate_target = 0; \
\
return count; \
}
#define __DEF_NACL_AUTH_INT(prefix, name) \
static ssize_t __iscsi_##prefix##_show_##name( \
struct iscsi_node_acl *nacl, \
char *page) \
{ \
struct iscsi_node_auth *auth = &nacl->node_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
return -EPERM; \
\
return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
}
#define DEF_NACL_AUTH_STR(name, flags) \
__DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
static ssize_t iscsi_nacl_auth_show_##name( \
struct se_node_acl *nacl, \
char *page) \
{ \
return __iscsi_nacl_auth_show_##name(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page); \
} \
static ssize_t iscsi_nacl_auth_store_##name( \
struct se_node_acl *nacl, \
const char *page, \
size_t count) \
{ \
return __iscsi_nacl_auth_store_##name(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page, count); \
}
#define DEF_NACL_AUTH_INT(name) \
__DEF_NACL_AUTH_INT(nacl_auth, name) \
static ssize_t iscsi_nacl_auth_show_##name( \
struct se_node_acl *nacl, \
char *page) \
{ \
return __iscsi_nacl_auth_show_##name(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page); \
}
#define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
#define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
/*
* One-way authentication userid
*/
DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
/*
* One-way authentication password
*/
DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
AUTH_ATTR(password, S_IRUGO | S_IWUSR);
/*
* Enforce mutual authentication
*/
DEF_NACL_AUTH_INT(authenticate_target);
AUTH_ATTR_RO(authenticate_target);
/*
* Mutual authentication userid
*/
DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
/*
* Mutual authentication password
*/
DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
&iscsi_nacl_auth_userid.attr,
&iscsi_nacl_auth_password.attr,
&iscsi_nacl_auth_authenticate_target.attr,
&iscsi_nacl_auth_userid_mutual.attr,
&iscsi_nacl_auth_password_mutual.attr,
NULL,
};
/* End items for lio_target_nacl_auth_cit */
/* Start items for lio_target_nacl_param_cit */
#define DEF_NACL_PARAM(name) \
static ssize_t iscsi_nacl_param_show_##name( \
struct se_node_acl *se_nacl, \
char *page) \
{ \
struct iscsi_session *sess; \
struct se_session *se_sess; \
ssize_t rb; \
\
spin_lock_bh(&se_nacl->nacl_sess_lock); \
se_sess = se_nacl->nacl_sess; \
if (!se_sess) { \
rb = snprintf(page, PAGE_SIZE, \
"No Active iSCSI Session\n"); \
} else { \
sess = se_sess->fabric_sess_ptr; \
rb = snprintf(page, PAGE_SIZE, "%u\n", \
(u32)sess->sess_ops->name); \
} \
spin_unlock_bh(&se_nacl->nacl_sess_lock); \
\
return rb; \
}
#define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
DEF_NACL_PARAM(MaxConnections);
NACL_PARAM_ATTR(MaxConnections);
DEF_NACL_PARAM(InitialR2T);
NACL_PARAM_ATTR(InitialR2T);
DEF_NACL_PARAM(ImmediateData);
NACL_PARAM_ATTR(ImmediateData);
DEF_NACL_PARAM(MaxBurstLength);
NACL_PARAM_ATTR(MaxBurstLength);
DEF_NACL_PARAM(FirstBurstLength);
NACL_PARAM_ATTR(FirstBurstLength);
DEF_NACL_PARAM(DefaultTime2Wait);
NACL_PARAM_ATTR(DefaultTime2Wait);
DEF_NACL_PARAM(DefaultTime2Retain);
NACL_PARAM_ATTR(DefaultTime2Retain);
DEF_NACL_PARAM(MaxOutstandingR2T);
NACL_PARAM_ATTR(MaxOutstandingR2T);
DEF_NACL_PARAM(DataPDUInOrder);
NACL_PARAM_ATTR(DataPDUInOrder);
DEF_NACL_PARAM(DataSequenceInOrder);
NACL_PARAM_ATTR(DataSequenceInOrder);
DEF_NACL_PARAM(ErrorRecoveryLevel);
NACL_PARAM_ATTR(ErrorRecoveryLevel);
static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
&iscsi_nacl_param_MaxConnections.attr,
&iscsi_nacl_param_InitialR2T.attr,
&iscsi_nacl_param_ImmediateData.attr,
&iscsi_nacl_param_MaxBurstLength.attr,
&iscsi_nacl_param_FirstBurstLength.attr,
&iscsi_nacl_param_DefaultTime2Wait.attr,
&iscsi_nacl_param_DefaultTime2Retain.attr,
&iscsi_nacl_param_MaxOutstandingR2T.attr,
&iscsi_nacl_param_DataPDUInOrder.attr,
&iscsi_nacl_param_DataSequenceInOrder.attr,
&iscsi_nacl_param_ErrorRecoveryLevel.attr,
NULL,
};
/* End items for lio_target_nacl_param_cit */
/* Start items for lio_target_acl_cit */
static ssize_t lio_target_nacl_show_info(
struct se_node_acl *se_nacl,
char *page)
{
struct iscsi_session *sess;
struct iscsi_conn *conn;
struct se_session *se_sess;
ssize_t rb = 0;
spin_lock_bh(&se_nacl->nacl_sess_lock);
se_sess = se_nacl->nacl_sess;
if (!se_sess) {
rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
" Endpoint: %s\n", se_nacl->initiatorname);
} else {
sess = se_sess->fabric_sess_ptr;
if (sess->sess_ops->InitiatorName)
rb += sprintf(page+rb, "InitiatorName: %s\n",
sess->sess_ops->InitiatorName);
if (sess->sess_ops->InitiatorAlias)
rb += sprintf(page+rb, "InitiatorAlias: %s\n",
sess->sess_ops->InitiatorAlias);
rb += sprintf(page+rb, "LIO Session ID: %u "
"ISID: 0x%02x %02x %02x %02x %02x %02x "
"TSIH: %hu ", sess->sid,
sess->isid[0], sess->isid[1], sess->isid[2],
sess->isid[3], sess->isid[4], sess->isid[5],
sess->tsih);
rb += sprintf(page+rb, "SessionType: %s\n",
(sess->sess_ops->SessionType) ?
"Discovery" : "Normal");
rb += sprintf(page+rb, "Session State: ");
switch (sess->session_state) {
case TARG_SESS_STATE_FREE:
rb += sprintf(page+rb, "TARG_SESS_FREE\n");
break;
case TARG_SESS_STATE_ACTIVE:
rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
break;
case TARG_SESS_STATE_LOGGED_IN:
rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
break;
case TARG_SESS_STATE_FAILED:
rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
break;
case TARG_SESS_STATE_IN_CONTINUE:
rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
break;
default:
rb += sprintf(page+rb, "ERROR: Unknown Session"
" State!\n");
break;
}
rb += sprintf(page+rb, "---------------------[iSCSI Session"
" Values]-----------------------\n");
rb += sprintf(page+rb, " CmdSN/WR : CmdSN/WC : ExpCmdSN"
" : MaxCmdSN : ITT : TTT\n");
rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
" 0x%08x 0x%08x\n",
sess->cmdsn_window,
(sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
sess->exp_cmd_sn, sess->max_cmd_sn,
sess->init_task_tag, sess->targ_xfer_tag);
rb += sprintf(page+rb, "----------------------[iSCSI"
" Connections]-------------------------\n");
spin_lock(&sess->conn_lock);
list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
rb += sprintf(page+rb, "CID: %hu Connection"
" State: ", conn->cid);
switch (conn->conn_state) {
case TARG_CONN_STATE_FREE:
rb += sprintf(page+rb,
"TARG_CONN_STATE_FREE\n");
break;
case TARG_CONN_STATE_XPT_UP:
rb += sprintf(page+rb,
"TARG_CONN_STATE_XPT_UP\n");
break;
case TARG_CONN_STATE_IN_LOGIN:
rb += sprintf(page+rb,
"TARG_CONN_STATE_IN_LOGIN\n");
break;
case TARG_CONN_STATE_LOGGED_IN:
rb += sprintf(page+rb,
"TARG_CONN_STATE_LOGGED_IN\n");
break;
case TARG_CONN_STATE_IN_LOGOUT:
rb += sprintf(page+rb,
"TARG_CONN_STATE_IN_LOGOUT\n");
break;
case TARG_CONN_STATE_LOGOUT_REQUESTED:
rb += sprintf(page+rb,
"TARG_CONN_STATE_LOGOUT_REQUESTED\n");
break;
case TARG_CONN_STATE_CLEANUP_WAIT:
rb += sprintf(page+rb,
"TARG_CONN_STATE_CLEANUP_WAIT\n");
break;
default:
rb += sprintf(page+rb,
"ERROR: Unknown Connection State!\n");
break;
}
rb += sprintf(page+rb, " Address %s %s", conn->login_ip,
(conn->network_transport == ISCSI_TCP) ?
"TCP" : "SCTP");
rb += sprintf(page+rb, " StatSN: 0x%08x\n",
conn->stat_sn);
}
spin_unlock(&sess->conn_lock);
}
spin_unlock_bh(&se_nacl->nacl_sess_lock);
return rb;
}
TF_NACL_BASE_ATTR_RO(lio_target, info);
static ssize_t lio_target_nacl_show_cmdsn_depth(
struct se_node_acl *se_nacl,
char *page)
{
return sprintf(page, "%u\n", se_nacl->queue_depth);
}
static ssize_t lio_target_nacl_store_cmdsn_depth(
struct se_node_acl *se_nacl,
const char *page,
size_t count)
{
struct se_portal_group *se_tpg = se_nacl->se_tpg;
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
struct config_item *acl_ci, *tpg_ci, *wwn_ci;
char *endptr;
u32 cmdsn_depth = 0;
int ret;
cmdsn_depth = simple_strtoul(page, &endptr, 0);
if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
pr_err("Passed cmdsn_depth: %u exceeds"
" TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
TA_DEFAULT_CMDSN_DEPTH_MAX);
return -EINVAL;
}
acl_ci = &se_nacl->acl_group.cg_item;
if (!acl_ci) {
pr_err("Unable to locatel acl_ci\n");
return -EINVAL;
}
tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
if (!tpg_ci) {
pr_err("Unable to locate tpg_ci\n");
return -EINVAL;
}
wwn_ci = &tpg_ci->ci_group->cg_item;
if (!wwn_ci) {
pr_err("Unable to locate config_item wwn_ci\n");
return -EINVAL;
}
if (iscsit_get_tpg(tpg) < 0)
return -EINVAL;
/*
* iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
*/
ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
config_item_name(acl_ci), cmdsn_depth, 1);
pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
"InitiatorName: %s\n", config_item_name(wwn_ci),
config_item_name(tpg_ci), cmdsn_depth,
config_item_name(acl_ci));
iscsit_put_tpg(tpg);
return (!ret) ? count : (ssize_t)ret;
}
TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_initiator_attrs[] = {
&lio_target_nacl_info.attr,
&lio_target_nacl_cmdsn_depth.attr,
NULL,
};
static 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) {
pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
return NULL;
}
return &acl->se_node_acl;
}
static struct se_node_acl *lio_target_make_nodeacl(
struct se_portal_group *se_tpg,
struct config_group *group,
const char *name)
{
struct config_group *stats_cg;
struct iscsi_node_acl *acl;
struct se_node_acl *se_nacl_new, *se_nacl;
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
u32 cmdsn_depth;
se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
if (!se_nacl_new)
return ERR_PTR(-ENOMEM);
acl = container_of(se_nacl_new, struct iscsi_node_acl,
se_node_acl);
cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
/*
* se_nacl_new may be released by core_tpg_add_initiator_node_acl()
* when converting a NdoeACL from demo mode -> explict
*/
se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
name, cmdsn_depth);
if (IS_ERR(se_nacl))
return se_nacl;
stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
stats_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
GFP_KERNEL);
if (!stats_cg->default_groups) {
pr_err("Unable to allocate memory for"
" stats_cg->default_groups\n");
core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
kfree(acl);
return ERR_PTR(-ENOMEM);
}
stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
stats_cg->default_groups[1] = NULL;
config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
"iscsi_sess_stats", &iscsi_stat_sess_cit);
return se_nacl;
}
static void lio_target_drop_nodeacl(
struct se_node_acl *se_nacl)
{
struct se_portal_group *se_tpg = se_nacl->se_tpg;
struct iscsi_node_acl *acl = container_of(se_nacl,
struct iscsi_node_acl, se_node_acl);
struct config_item *df_item;
struct config_group *stats_cg;
int i;
stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
for (i = 0; stats_cg->default_groups[i]; i++) {
df_item = &stats_cg->default_groups[i]->cg_item;
stats_cg->default_groups[i] = NULL;
config_item_put(df_item);
}
kfree(stats_cg->default_groups);
core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
kfree(acl);
}
/* End items for lio_target_acl_cit */
/* Start items for lio_target_tpg_attrib_cit */
#define DEF_TPG_ATTRIB(name) \
\
static ssize_t iscsi_tpg_attrib_show_##name( \
struct se_portal_group *se_tpg, \
char *page) \
{ \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
ssize_t rb; \
\
if (iscsit_get_tpg(tpg) < 0) \
return -EINVAL; \
\
rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name); \
iscsit_put_tpg(tpg); \
return rb; \
} \
\
static ssize_t iscsi_tpg_attrib_store_##name( \
struct se_portal_group *se_tpg, \
const char *page, \
size_t count) \
{ \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
char *endptr; \
u32 val; \
int ret; \
\
if (iscsit_get_tpg(tpg) < 0) \
return -EINVAL; \
\
val = simple_strtoul(page, &endptr, 0); \
ret = iscsit_ta_##name(tpg, val); \
if (ret < 0) \
goto out; \
\
iscsit_put_tpg(tpg); \
return count; \
out: \
iscsit_put_tpg(tpg); \
return ret; \
}
#define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
/*
* Define iscsi_tpg_attrib_s_authentication
*/
DEF_TPG_ATTRIB(authentication);
TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
/*
* Define iscsi_tpg_attrib_s_login_timeout
*/
DEF_TPG_ATTRIB(login_timeout);
TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
/*
* Define iscsi_tpg_attrib_s_netif_timeout
*/
DEF_TPG_ATTRIB(netif_timeout);
TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
/*
* Define iscsi_tpg_attrib_s_generate_node_acls
*/
DEF_TPG_ATTRIB(generate_node_acls);
TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
/*
* Define iscsi_tpg_attrib_s_default_cmdsn_depth
*/
DEF_TPG_ATTRIB(default_cmdsn_depth);
TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
/*
Define iscsi_tpg_attrib_s_cache_dynamic_acls
*/
DEF_TPG_ATTRIB(cache_dynamic_acls);
TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
/*
* Define iscsi_tpg_attrib_s_demo_mode_write_protect
*/
DEF_TPG_ATTRIB(demo_mode_write_protect);
TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
/*
* Define iscsi_tpg_attrib_s_prod_mode_write_protect
*/
DEF_TPG_ATTRIB(prod_mode_write_protect);
TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
&iscsi_tpg_attrib_authentication.attr,
&iscsi_tpg_attrib_login_timeout.attr,
&iscsi_tpg_attrib_netif_timeout.attr,
&iscsi_tpg_attrib_generate_node_acls.attr,
&iscsi_tpg_attrib_default_cmdsn_depth.attr,
&iscsi_tpg_attrib_cache_dynamic_acls.attr,
&iscsi_tpg_attrib_demo_mode_write_protect.attr,
&iscsi_tpg_attrib_prod_mode_write_protect.attr,
NULL,
};
/* End items for lio_target_tpg_attrib_cit */
/* Start items for lio_target_tpg_param_cit */
#define DEF_TPG_PARAM(name) \
static ssize_t iscsi_tpg_param_show_##name( \
struct se_portal_group *se_tpg, \
char *page) \
{ \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
struct iscsi_param *param; \
ssize_t rb; \
\
if (iscsit_get_tpg(tpg) < 0) \
return -EINVAL; \
\
param = iscsi_find_param_from_key(__stringify(name), \
tpg->param_list); \
if (!param) { \
iscsit_put_tpg(tpg); \
return -EINVAL; \
} \
rb = snprintf(page, PAGE_SIZE, "%s\n", param->value); \
\
iscsit_put_tpg(tpg); \
return rb; \
} \
static ssize_t iscsi_tpg_param_store_##name( \
struct se_portal_group *se_tpg, \
const char *page, \
size_t count) \
{ \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
char *buf; \
int ret; \
\
buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
if (!buf) \
return -ENOMEM; \
snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
buf[strlen(buf)-1] = '\0'; /* Kill newline */ \
\
if (iscsit_get_tpg(tpg) < 0) { \
kfree(buf); \
return -EINVAL; \
} \
\
ret = iscsi_change_param_value(buf, tpg->param_list, 1); \
if (ret < 0) \
goto out; \
\
kfree(buf); \
iscsit_put_tpg(tpg); \
return count; \
out: \
kfree(buf); \
iscsit_put_tpg(tpg); \
return -EINVAL; \
}
#define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
DEF_TPG_PARAM(AuthMethod);
TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(HeaderDigest);
TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(DataDigest);
TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(MaxConnections);
TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(TargetAlias);
TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(InitialR2T);
TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(ImmediateData);
TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(MaxRecvDataSegmentLength);
TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(MaxBurstLength);
TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(FirstBurstLength);
TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(DefaultTime2Wait);
TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(DefaultTime2Retain);
TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(MaxOutstandingR2T);
TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(DataPDUInOrder);
TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(DataSequenceInOrder);
TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(ErrorRecoveryLevel);
TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(IFMarker);
TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(OFMarker);
TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(IFMarkInt);
TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
DEF_TPG_PARAM(OFMarkInt);
TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
&iscsi_tpg_param_AuthMethod.attr,
&iscsi_tpg_param_HeaderDigest.attr,
&iscsi_tpg_param_DataDigest.attr,
&iscsi_tpg_param_MaxConnections.attr,
&iscsi_tpg_param_TargetAlias.attr,
&iscsi_tpg_param_InitialR2T.attr,
&iscsi_tpg_param_ImmediateData.attr,
&iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
&iscsi_tpg_param_MaxBurstLength.attr,
&iscsi_tpg_param_FirstBurstLength.attr,
&iscsi_tpg_param_DefaultTime2Wait.attr,
&iscsi_tpg_param_DefaultTime2Retain.attr,
&iscsi_tpg_param_MaxOutstandingR2T.attr,
&iscsi_tpg_param_DataPDUInOrder.attr,
&iscsi_tpg_param_DataSequenceInOrder.attr,
&iscsi_tpg_param_ErrorRecoveryLevel.attr,
&iscsi_tpg_param_IFMarker.attr,
&iscsi_tpg_param_OFMarker.attr,
&iscsi_tpg_param_IFMarkInt.attr,
&iscsi_tpg_param_OFMarkInt.attr,
NULL,
};
/* End items for lio_target_tpg_param_cit */
/* Start items for lio_target_tpg_cit */
static ssize_t lio_target_tpg_show_enable(
struct se_portal_group *se_tpg,
char *page)
{
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
ssize_t len;
spin_lock(&tpg->tpg_state_lock);
len = sprintf(page, "%d\n",
(tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
spin_unlock(&tpg->tpg_state_lock);
return len;
}
static ssize_t lio_target_tpg_store_enable(
struct se_portal_group *se_tpg,
const char *page,
size_t count)
{
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
char *endptr;
u32 op;
int ret = 0;
op = simple_strtoul(page, &endptr, 0);
if ((op != 1) && (op != 0)) {
pr_err("Illegal value for tpg_enable: %u\n", op);
return -EINVAL;
}
ret = iscsit_get_tpg(tpg);
if (ret < 0)
return -EINVAL;
if (op) {
ret = iscsit_tpg_enable_portal_group(tpg);
if (ret < 0)
goto out;
} else {
/*
* iscsit_tpg_disable_portal_group() assumes force=1
*/
ret = iscsit_tpg_disable_portal_group(tpg, 1);
if (ret < 0)
goto out;
}
iscsit_put_tpg(tpg);
return count;
out:
iscsit_put_tpg(tpg);
return -EINVAL;
}
TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_tpg_attrs[] = {
&lio_target_tpg_enable.attr,
NULL,
};
/* End items for lio_target_tpg_cit */
/* Start items for lio_target_tiqn_cit */
struct se_portal_group *lio_target_tiqn_addtpg(
struct se_wwn *wwn,
struct config_group *group,
const char *name)
{
struct iscsi_portal_group *tpg;
struct iscsi_tiqn *tiqn;
char *tpgt_str, *end_ptr;
int ret = 0;
unsigned short int tpgt;
tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
/*
* Only tpgt_# directory groups can be created below
* target/iscsi/iqn.superturodiskarry/
*/
tpgt_str = strstr(name, "tpgt_");
if (!tpgt_str) {
pr_err("Unable to locate \"tpgt_#\" directory"
" group\n");
return NULL;
}
tpgt_str += 5; /* Skip ahead of "tpgt_" */
tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
tpg = iscsit_alloc_portal_group(tiqn, tpgt);
if (!tpg)
return NULL;
ret = core_tpg_register(
&lio_target_fabric_configfs->tf_ops,
wwn, &tpg->tpg_se_tpg, (void *)tpg,
TRANSPORT_TPG_TYPE_NORMAL);
if (ret < 0)
return NULL;
ret = iscsit_tpg_add_portal_group(tiqn, tpg);
if (ret != 0)
goto out;
pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
name);
return &tpg->tpg_se_tpg;
out:
core_tpg_deregister(&tpg->tpg_se_tpg);
kfree(tpg);
return NULL;
}
void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg;
struct iscsi_tiqn *tiqn;
tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
tiqn = tpg->tpg_tiqn;
/*
* iscsit_tpg_del_portal_group() assumes force=1
*/
pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
iscsit_tpg_del_portal_group(tiqn, tpg, 1);
}
/* End items for lio_target_tiqn_cit */
/* Start LIO-Target TIQN struct contig_item lio_target_cit */
static ssize_t lio_target_wwn_show_attr_lio_version(
struct target_fabric_configfs *tf,
char *page)
{
return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
}
TF_WWN_ATTR_RO(lio_target, lio_version);
static struct configfs_attribute *lio_target_wwn_attrs[] = {
&lio_target_wwn_lio_version.attr,
NULL,
};
struct se_wwn *lio_target_call_coreaddtiqn(
struct target_fabric_configfs *tf,
struct config_group *group,
const char *name)
{
struct config_group *stats_cg;
struct iscsi_tiqn *tiqn;
tiqn = iscsit_add_tiqn((unsigned char *)name);
if (IS_ERR(tiqn))
return ERR_CAST(tiqn);
/*
* Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
*/
stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
stats_cg->default_groups = kzalloc(sizeof(struct config_group) * 6,
GFP_KERNEL);
if (!stats_cg->default_groups) {
pr_err("Unable to allocate memory for"
" stats_cg->default_groups\n");
iscsit_del_tiqn(tiqn);
return ERR_PTR(-ENOMEM);
}
stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
stats_cg->default_groups[5] = NULL;
config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
"iscsi_instance", &iscsi_stat_instance_cit);
config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
"iscsi_sess_err", &iscsi_stat_sess_err_cit);
config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
"iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
"iscsi_login_stats", &iscsi_stat_login_cit);
config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
"iscsi_logout_stats", &iscsi_stat_logout_cit);
pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
" %s\n", name);
return &tiqn->tiqn_wwn;
}
void lio_target_call_coredeltiqn(
struct se_wwn *wwn)
{
struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
struct config_item *df_item;
struct config_group *stats_cg;
int i;
stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
for (i = 0; stats_cg->default_groups[i]; i++) {
df_item = &stats_cg->default_groups[i]->cg_item;
stats_cg->default_groups[i] = NULL;
config_item_put(df_item);
}
kfree(stats_cg->default_groups);
pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
tiqn->tiqn);
iscsit_del_tiqn(tiqn);
}
/* End LIO-Target TIQN struct contig_lio_target_cit */
/* Start lio_target_discovery_auth_cit */
#define DEF_DISC_AUTH_STR(name, flags) \
__DEF_NACL_AUTH_STR(disc, name, flags) \
static ssize_t iscsi_disc_show_##name( \
struct target_fabric_configfs *tf, \
char *page) \
{ \
return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
page); \
} \
static ssize_t iscsi_disc_store_##name( \
struct target_fabric_configfs *tf, \
const char *page, \
size_t count) \
{ \
return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
page, count); \
}
#define DEF_DISC_AUTH_INT(name) \
__DEF_NACL_AUTH_INT(disc, name) \
static ssize_t iscsi_disc_show_##name( \
struct target_fabric_configfs *tf, \
char *page) \
{ \
return __iscsi_disc_show_##name(&iscsit_global->discovery_acl, \
page); \
}
#define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
#define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
/*
* One-way authentication userid
*/
DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
/*
* One-way authentication password
*/
DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
/*
* Enforce mutual authentication
*/
DEF_DISC_AUTH_INT(authenticate_target);
DISC_AUTH_ATTR_RO(authenticate_target);
/*
* Mutual authentication userid
*/
DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
/*
* Mutual authentication password
*/
DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
/*
* enforce_discovery_auth
*/
static ssize_t iscsi_disc_show_enforce_discovery_auth(
struct target_fabric_configfs *tf,
char *page)
{
struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
}
static ssize_t iscsi_disc_store_enforce_discovery_auth(
struct target_fabric_configfs *tf,
const char *page,
size_t count)
{
struct iscsi_param *param;
struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
char *endptr;
u32 op;
op = simple_strtoul(page, &endptr, 0);
if ((op != 1) && (op != 0)) {
pr_err("Illegal value for enforce_discovery_auth:"
" %u\n", op);
return -EINVAL;
}
if (!discovery_tpg) {
pr_err("iscsit_global->discovery_tpg is NULL\n");
return -EINVAL;
}
param = iscsi_find_param_from_key(AUTHMETHOD,
discovery_tpg->param_list);
if (!param)
return -EINVAL;
if (op) {
/*
* Reset the AuthMethod key to CHAP.
*/
if (iscsi_update_param_value(param, CHAP) < 0)
return -EINVAL;
discovery_tpg->tpg_attrib.authentication = 1;
iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
pr_debug("LIO-CORE[0] Successfully enabled"
" authentication enforcement for iSCSI"
" Discovery TPG\n");
} else {
/*
* Reset the AuthMethod key to CHAP,None
*/
if (iscsi_update_param_value(param, "CHAP,None") < 0)
return -EINVAL;
discovery_tpg->tpg_attrib.authentication = 0;
iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
pr_debug("LIO-CORE[0] Successfully disabled"
" authentication enforcement for iSCSI"
" Discovery TPG\n");
}
return count;
}
DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
&iscsi_disc_userid.attr,
&iscsi_disc_password.attr,
&iscsi_disc_authenticate_target.attr,
&iscsi_disc_userid_mutual.attr,
&iscsi_disc_password_mutual.attr,
&iscsi_disc_enforce_discovery_auth.attr,
NULL,
};
/* End lio_target_discovery_auth_cit */
/* Start functions for target_core_fabric_ops */
static char *iscsi_get_fabric_name(void)
{
return "iSCSI";
}
static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
return cmd->init_task_tag;
}
static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
return cmd->i_state;
}
static int iscsi_is_state_remove(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
return (cmd->i_state == ISTATE_REMOVE);
}
static int lio_sess_logged_in(struct se_session *se_sess)
{
struct iscsi_session *sess = se_sess->fabric_sess_ptr;
int ret;
/*
* Called with spin_lock_bh(&tpg_lock); and
* spin_lock(&se_tpg->session_lock); held.
*/
spin_lock(&sess->conn_lock);
ret = (sess->session_state != TARG_SESS_STATE_LOGGED_IN);
spin_unlock(&sess->conn_lock);
return ret;
}
static u32 lio_sess_get_index(struct se_session *se_sess)
{
struct iscsi_session *sess = se_sess->fabric_sess_ptr;
return sess->session_index;
}
static u32 lio_sess_get_initiator_sid(
struct se_session *se_sess,
unsigned char *buf,
u32 size)
{
struct iscsi_session *sess = se_sess->fabric_sess_ptr;
/*
* iSCSI Initiator Session Identifier from RFC-3720.
*/
return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
sess->isid[0], sess->isid[1], sess->isid[2],
sess->isid[3], sess->isid[4], sess->isid[5]);
}
static int lio_queue_data_in(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
cmd->i_state = ISTATE_SEND_DATAIN;
iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
return 0;
}
static int lio_write_pending(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
if (!cmd->immediate_data && !cmd->unsolicited_data)
return iscsit_build_r2ts_for_cmd(cmd, cmd->conn, 1);
return 0;
}
static int lio_write_pending_status(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
int ret;
spin_lock_bh(&cmd->istate_lock);
ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
spin_unlock_bh(&cmd->istate_lock);
return ret;
}
static int lio_queue_status(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
cmd->i_state = ISTATE_SEND_STATUS;
iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
return 0;
}
static u16 lio_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)
{
unsigned char *buffer = se_cmd->sense_buffer;
/*
* From RFC-3720 10.4.7. Data Segment - Sense and Response Data Segment
* 16-bit SenseLength.
*/
buffer[0] = ((sense_length >> 8) & 0xff);
buffer[1] = (sense_length & 0xff);
/*
* Return two byte offset into allocated sense_buffer.
*/
return 2;
}
static u16 lio_get_fabric_sense_len(void)
{
/*
* Return two byte offset into allocated sense_buffer.
*/
return 2;
}
static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
cmd->i_state = ISTATE_SEND_TASKMGTRSP;
iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
return 0;
}
static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return &tpg->tpg_tiqn->tiqn[0];
}
static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return tpg->tpgt;
}
static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
}
static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
}
static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
}
static int lio_tpg_check_demo_mode_write_protect(
struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
}
static int lio_tpg_check_prod_mode_write_protect(
struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
}
static 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 iscsit_inc_session_usage_count() on the
* struct iscsi_session in question.
*/
static int lio_tpg_shutdown_session(struct se_session *se_sess)
{
struct iscsi_session *sess = 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);
iscsit_inc_session_usage_count(sess);
iscsit_stop_time2retain_timer(sess);
return 1;
}
/*
* Calls iscsit_dec_session_usage_count() as inverse of
* lio_tpg_shutdown_session()
*/
static void lio_tpg_close_session(struct se_session *se_sess)
{
struct iscsi_session *sess = se_sess->fabric_sess_ptr;
/*
* If the iSCSI Session for the iSCSI Initiator Node exists,
* forcefully shutdown the iSCSI NEXUS.
*/
iscsit_stop_session(sess, 1, 1);
iscsit_dec_session_usage_count(sess);
iscsit_close_session(sess);
}
static void lio_tpg_stop_session(
struct se_session *se_sess,
int sess_sleep,
int conn_sleep)
{
struct iscsi_session *sess = se_sess->fabric_sess_ptr;
iscsit_stop_session(sess, sess_sleep, conn_sleep);
}
static void lio_tpg_fall_back_to_erl0(struct se_session *se_sess)
{
struct iscsi_session *sess = se_sess->fabric_sess_ptr;
iscsit_fall_back_to_erl0(sess);
}
static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
{
struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
return tpg->tpg_tiqn->tiqn_index;
}
static 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;
iscsit_set_default_node_attribues(acl);
}
static void lio_release_cmd(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
iscsit_release_cmd(cmd);
}
/* End functions for target_core_fabric_ops */
int iscsi_target_register_configfs(void)
{
struct target_fabric_configfs *fabric;
int ret;
lio_target_fabric_configfs = NULL;
fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
if (IS_ERR(fabric)) {
pr_err("target_fabric_configfs_init() for"
" LIO-Target failed!\n");
return PTR_ERR(fabric);
}
/*
* Setup the fabric API of function pointers used by target_core_mod..
*/
fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
fabric->tf_ops.tpg_get_pr_transport_id_len =
&iscsi_get_pr_transport_id_len;
fabric->tf_ops.tpg_parse_pr_out_transport_id =
&iscsi_parse_pr_out_transport_id;
fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
fabric->tf_ops.tpg_check_demo_mode_cache =
&lio_tpg_check_demo_mode_cache;
fabric->tf_ops.tpg_check_demo_mode_write_protect =
&lio_tpg_check_demo_mode_write_protect;
fabric->tf_ops.tpg_check_prod_mode_write_protect =
&lio_tpg_check_prod_mode_write_protect;
fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
fabric->tf_ops.release_cmd = &lio_release_cmd;
fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
fabric->tf_ops.close_session = &lio_tpg_close_session;
fabric->tf_ops.stop_session = &lio_tpg_stop_session;
fabric->tf_ops.fall_back_to_erl0 = &lio_tpg_fall_back_to_erl0;
fabric->tf_ops.sess_logged_in = &lio_sess_logged_in;
fabric->tf_ops.sess_get_index = &lio_sess_get_index;
fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
fabric->tf_ops.write_pending = &lio_write_pending;
fabric->tf_ops.write_pending_status = &lio_write_pending_status;
fabric->tf_ops.set_default_node_attributes =
&lio_set_default_node_attributes;
fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
fabric->tf_ops.queue_data_in = &lio_queue_data_in;
fabric->tf_ops.queue_status = &lio_queue_status;
fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
fabric->tf_ops.set_fabric_sense_len = &lio_set_fabric_sense_len;
fabric->tf_ops.get_fabric_sense_len = &lio_get_fabric_sense_len;
fabric->tf_ops.is_state_remove = &iscsi_is_state_remove;
/*
* Setup function pointers for generic logic in target_core_fabric_configfs.c
*/
fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
fabric->tf_ops.fabric_post_link = NULL;
fabric->tf_ops.fabric_pre_unlink = NULL;
fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
/*
* Setup default attribute lists for various fabric->tf_cit_tmpl
* sturct config_item_type's
*/
TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
ret = target_fabric_configfs_register(fabric);
if (ret < 0) {
pr_err("target_fabric_configfs_register() for"
" LIO-Target failed!\n");
target_fabric_configfs_free(fabric);
return ret;
}
lio_target_fabric_configfs = fabric;
pr_debug("LIO_TARGET[0] - Set fabric ->"
" lio_target_fabric_configfs\n");
return 0;
}
void iscsi_target_deregister_configfs(void)
{
if (!lio_target_fabric_configfs)
return;
/*
* Shutdown discovery sessions and disable discovery TPG
*/
if (iscsit_global->discovery_tpg)
iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
target_fabric_configfs_deregister(lio_target_fabric_configfs);
lio_target_fabric_configfs = NULL;
pr_debug("LIO_TARGET[0] - Cleared"
" lio_target_fabric_configfs\n");
}
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