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linux/drivers/target/iscsi/iscsi_target_configfs.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*******************************************************************************
* This file contains the configfs implementation for iSCSI Target mode
* from the LIO-Target Project.
*
* (c) Copyright 2007-2013 Datera, Inc.
*
* Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
*
****************************************************************************/
#include <linux/configfs.h>
#include <linux/ctype.h>
#include <linux/export.h>
#include <linux/inet.h>
#include <linux/module.h>
#include <net/ipv6.h>
#include <target/target_core_base.h>
#include <target/target_core_fabric.h>
#include <target/iscsi/iscsi_transport.h>
#include <target/iscsi/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 <target/iscsi/iscsi_target_stat.h>
/* Start items for lio_target_portal_cit */
static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item)
{
return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np);
}
static ssize_t lio_target_np_driver_show(struct config_item *item, char *page,
enum iscsit_transport_type type)
{
struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
struct iscsi_tpg_np *tpg_np_new;
ssize_t rb;
tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
if (tpg_np_new)
rb = sprintf(page, "1\n");
else
rb = sprintf(page, "0\n");
return rb;
}
static ssize_t lio_target_np_driver_store(struct config_item *item,
const char *page, size_t count, enum iscsit_transport_type type,
const char *mod_name)
{
struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
struct iscsi_np *np;
struct iscsi_portal_group *tpg;
struct iscsi_tpg_np *tpg_np_new = NULL;
u32 op;
int rc;
rc = kstrtou32(page, 0, &op);
if (rc)
return rc;
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) {
if (strlen(mod_name)) {
rc = request_module(mod_name);
if (rc != 0) {
pr_warn("Unable to request_module for %s\n",
mod_name);
rc = 0;
}
}
tpg_np_new = iscsit_tpg_add_network_portal(tpg,
&np->np_sockaddr, tpg_np, type);
if (IS_ERR(tpg_np_new)) {
rc = PTR_ERR(tpg_np_new);
goto out;
}
} else {
tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
if (tpg_np_new) {
rc = iscsit_tpg_del_network_portal(tpg, tpg_np_new);
if (rc < 0)
goto out;
}
}
iscsit_put_tpg(tpg);
return count;
out:
iscsit_put_tpg(tpg);
return rc;
}
static ssize_t lio_target_np_iser_show(struct config_item *item, char *page)
{
return lio_target_np_driver_show(item, page, ISCSI_INFINIBAND);
}
static ssize_t lio_target_np_iser_store(struct config_item *item,
const char *page, size_t count)
{
return lio_target_np_driver_store(item, page, count,
ISCSI_INFINIBAND, "ib_isert");
}
CONFIGFS_ATTR(lio_target_np_, iser);
static ssize_t lio_target_np_cxgbit_show(struct config_item *item, char *page)
{
return lio_target_np_driver_show(item, page, ISCSI_CXGBIT);
}
static ssize_t lio_target_np_cxgbit_store(struct config_item *item,
const char *page, size_t count)
{
return lio_target_np_driver_store(item, page, count,
ISCSI_CXGBIT, "cxgbit");
}
CONFIGFS_ATTR(lio_target_np_, cxgbit);
static struct configfs_attribute *lio_target_portal_attrs[] = {
&lio_target_np_attr_iser,
&lio_target_np_attr_cxgbit,
NULL,
};
/* Stop items for lio_target_portal_cit */
/* Start items for lio_target_np_cit */
#define MAX_PORTAL_LEN 256
static 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 sockaddr_storage sockaddr = { };
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);
str = strstr(buf, "[");
if (str) {
str2 = strstr(str, "]");
if (!str2) {
pr_err("Unable to locate trailing \"]\""
" in IPv6 iSCSI network portal address\n");
return ERR_PTR(-EINVAL);
}
ip_str = str + 1; /* Skip over leading "[" */
*str2 = '\0'; /* Terminate the unbracketed IPv6 address */
str2++; /* Skip over the \0 */
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 ":" */
} else {
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 = inet_pton_with_scope(&init_net, AF_UNSPEC, ip_str,
port_str, &sockaddr);
if (ret) {
pr_err("malformed ip/port passed: %s\n", name);
return ERR_PTR(ret);
}
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 attributes under
* sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
*
*/
tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, 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: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);
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 ISCSI_NACL_ATTR(name) \
static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\
char *page) \
{ \
struct se_node_acl *se_nacl = attrib_to_nacl(item); \
struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
se_node_acl); \
\
return sprintf(page, "%u\n", nacl->node_attrib.name); \
} \
\
static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
const char *page, size_t count) \
{ \
struct se_node_acl *se_nacl = attrib_to_nacl(item); \
struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
se_node_acl); \
u32 val; \
int ret; \
\
ret = kstrtou32(page, 0, &val); \
if (ret) \
return ret; \
ret = iscsit_na_##name(nacl, val); \
if (ret < 0) \
return ret; \
\
return count; \
} \
\
CONFIGFS_ATTR(iscsi_nacl_attrib_, name)
ISCSI_NACL_ATTR(dataout_timeout);
ISCSI_NACL_ATTR(dataout_timeout_retries);
ISCSI_NACL_ATTR(default_erl);
ISCSI_NACL_ATTR(nopin_timeout);
ISCSI_NACL_ATTR(nopin_response_timeout);
ISCSI_NACL_ATTR(random_datain_pdu_offsets);
ISCSI_NACL_ATTR(random_datain_seq_offsets);
ISCSI_NACL_ATTR(random_r2t_offsets);
static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
&iscsi_nacl_attrib_attr_dataout_timeout,
&iscsi_nacl_attrib_attr_dataout_timeout_retries,
&iscsi_nacl_attrib_attr_default_erl,
&iscsi_nacl_attrib_attr_nopin_timeout,
&iscsi_nacl_attrib_attr_nopin_response_timeout,
&iscsi_nacl_attrib_attr_random_datain_pdu_offsets,
&iscsi_nacl_attrib_attr_random_datain_seq_offsets,
&iscsi_nacl_attrib_attr_random_r2t_offsets,
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##_##name##_show( \
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##_##name##_store( \
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; \
if (count >= sizeof(auth->name)) \
return -EINVAL; \
snprintf(auth->name, sizeof(auth->name), "%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_STR(name, flags) \
__DEF_NACL_AUTH_STR(nacl_auth, name, flags) \
static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_node_acl *nacl = auth_to_nacl(item); \
return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page); \
} \
static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
const char *page, size_t count) \
{ \
struct se_node_acl *nacl = auth_to_nacl(item); \
return __iscsi_nacl_auth_##name##_store(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page, count); \
} \
\
CONFIGFS_ATTR(iscsi_nacl_auth_, name)
/*
* One-way authentication userid
*/
DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
#define __DEF_NACL_AUTH_INT(prefix, name) \
static ssize_t __iscsi_##prefix##_##name##_show( \
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_INT(name) \
__DEF_NACL_AUTH_INT(nacl_auth, name) \
static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_node_acl *nacl = auth_to_nacl(item); \
return __iscsi_nacl_auth_##name##_show(container_of(nacl, \
struct iscsi_node_acl, se_node_acl), page); \
} \
\
CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
DEF_NACL_AUTH_INT(authenticate_target);
static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
&iscsi_nacl_auth_attr_userid,
&iscsi_nacl_auth_attr_password,
&iscsi_nacl_auth_attr_authenticate_target,
&iscsi_nacl_auth_attr_userid_mutual,
&iscsi_nacl_auth_attr_password_mutual,
NULL,
};
/* End items for lio_target_nacl_auth_cit */
/* Start items for lio_target_nacl_param_cit */
#define ISCSI_NACL_PARAM(name) \
static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_node_acl *se_nacl = param_to_nacl(item); \
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; \
} \
\
CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)
ISCSI_NACL_PARAM(MaxConnections);
ISCSI_NACL_PARAM(InitialR2T);
ISCSI_NACL_PARAM(ImmediateData);
ISCSI_NACL_PARAM(MaxBurstLength);
ISCSI_NACL_PARAM(FirstBurstLength);
ISCSI_NACL_PARAM(DefaultTime2Wait);
ISCSI_NACL_PARAM(DefaultTime2Retain);
ISCSI_NACL_PARAM(MaxOutstandingR2T);
ISCSI_NACL_PARAM(DataPDUInOrder);
ISCSI_NACL_PARAM(DataSequenceInOrder);
ISCSI_NACL_PARAM(ErrorRecoveryLevel);
static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
&iscsi_nacl_param_attr_MaxConnections,
&iscsi_nacl_param_attr_InitialR2T,
&iscsi_nacl_param_attr_ImmediateData,
&iscsi_nacl_param_attr_MaxBurstLength,
&iscsi_nacl_param_attr_FirstBurstLength,
&iscsi_nacl_param_attr_DefaultTime2Wait,
&iscsi_nacl_param_attr_DefaultTime2Retain,
&iscsi_nacl_param_attr_MaxOutstandingR2T,
&iscsi_nacl_param_attr_DataPDUInOrder,
&iscsi_nacl_param_attr_DataSequenceInOrder,
&iscsi_nacl_param_attr_ErrorRecoveryLevel,
NULL,
};
/* End items for lio_target_nacl_param_cit */
/* Start items for lio_target_acl_cit */
static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
{
struct se_node_acl *se_nacl = acl_to_nacl(item);
struct iscsi_session *sess;
struct iscsi_conn *conn;
struct se_session *se_sess;
ssize_t rb = 0;
u32 max_cmd_sn;
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;
rb += sprintf(page+rb, "InitiatorName: %s\n",
sess->sess_ops->InitiatorName);
rb += sprintf(page+rb, "InitiatorAlias: %s\n",
sess->sess_ops->InitiatorAlias);
rb += sprintf(page+rb,
"LIO Session ID: %u ISID: 0x%6ph TSIH: %hu ",
sess->sid, sess->isid, 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");
max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
rb += sprintf(page+rb, " 0x%08x 0x%08x 0x%08x 0x%08x"
" 0x%08x 0x%08x\n",
sess->cmdsn_window,
(max_cmd_sn - sess->exp_cmd_sn) + 1,
sess->exp_cmd_sn, 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 %pISc %s", &conn->login_sockaddr,
(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;
}
static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
char *page)
{
return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth);
}
static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
const char *page, size_t count)
{
struct se_node_acl *se_nacl = acl_to_nacl(item);
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;
u32 cmdsn_depth = 0;
int ret;
ret = kstrtou32(page, 0, &cmdsn_depth);
if (ret)
return ret;
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;
ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth);
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;
}
static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
{
return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
}
static ssize_t lio_target_nacl_tag_store(struct config_item *item,
const char *page, size_t count)
{
struct se_node_acl *se_nacl = acl_to_nacl(item);
int ret;
ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
if (ret < 0)
return ret;
return count;
}
CONFIGFS_ATTR_RO(lio_target_nacl_, info);
CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
CONFIGFS_ATTR(lio_target_nacl_, tag);
static struct configfs_attribute *lio_target_initiator_attrs[] = {
&lio_target_nacl_attr_info,
&lio_target_nacl_attr_cmdsn_depth,
&lio_target_nacl_attr_tag,
NULL,
};
static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
const char *name)
{
struct iscsi_node_acl *acl =
container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
"iscsi_sess_stats", &iscsi_stat_sess_cit);
configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,
&se_nacl->acl_fabric_stat_group);
return 0;
}
/* 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_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_portal_group *se_tpg = attrib_to_tpg(item); \
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", tpg->tpg_attrib.name); \
iscsit_put_tpg(tpg); \
return rb; \
} \
\
static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
const char *page, size_t count) \
{ \
struct se_portal_group *se_tpg = attrib_to_tpg(item); \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
u32 val; \
int ret; \
\
if (iscsit_get_tpg(tpg) < 0) \
return -EINVAL; \
\
ret = kstrtou32(page, 0, &val); \
if (ret) \
goto out; \
ret = iscsit_ta_##name(tpg, val); \
if (ret < 0) \
goto out; \
\
iscsit_put_tpg(tpg); \
return count; \
out: \
iscsit_put_tpg(tpg); \
return ret; \
} \
CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
DEF_TPG_ATTRIB(authentication);
DEF_TPG_ATTRIB(login_timeout);
DEF_TPG_ATTRIB(netif_timeout);
DEF_TPG_ATTRIB(generate_node_acls);
DEF_TPG_ATTRIB(default_cmdsn_depth);
DEF_TPG_ATTRIB(cache_dynamic_acls);
DEF_TPG_ATTRIB(demo_mode_write_protect);
DEF_TPG_ATTRIB(prod_mode_write_protect);
DEF_TPG_ATTRIB(demo_mode_discovery);
DEF_TPG_ATTRIB(default_erl);
DEF_TPG_ATTRIB(t10_pi);
DEF_TPG_ATTRIB(fabric_prot_type);
DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
DEF_TPG_ATTRIB(login_keys_workaround);
static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
&iscsi_tpg_attrib_attr_authentication,
&iscsi_tpg_attrib_attr_login_timeout,
&iscsi_tpg_attrib_attr_netif_timeout,
&iscsi_tpg_attrib_attr_generate_node_acls,
&iscsi_tpg_attrib_attr_default_cmdsn_depth,
&iscsi_tpg_attrib_attr_cache_dynamic_acls,
&iscsi_tpg_attrib_attr_demo_mode_write_protect,
&iscsi_tpg_attrib_attr_prod_mode_write_protect,
&iscsi_tpg_attrib_attr_demo_mode_discovery,
&iscsi_tpg_attrib_attr_default_erl,
&iscsi_tpg_attrib_attr_t10_pi,
&iscsi_tpg_attrib_attr_fabric_prot_type,
&iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
&iscsi_tpg_attrib_attr_login_keys_workaround,
NULL,
};
/* End items for lio_target_tpg_attrib_cit */
/* Start items for lio_target_tpg_auth_cit */
#define __DEF_TPG_AUTH_STR(prefix, name, flags) \
static ssize_t __iscsi_##prefix##_##name##_show(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_node_auth *auth = &tpg->tpg_demo_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
return -EPERM; \
\
return snprintf(page, PAGE_SIZE, "%s\n", auth->name); \
} \
\
static ssize_t __iscsi_##prefix##_##name##_store(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); \
struct iscsi_node_auth *auth = &tpg->tpg_demo_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
return -EPERM; \
\
snprintf(auth->name, sizeof(auth->name), "%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_TPG_AUTH_STR(name, flags) \
__DEF_TPG_AUTH_STR(tpg_auth, name, flags) \
static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
char *page) \
{ \
return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
} \
\
static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item, \
const char *page, size_t count) \
{ \
return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
} \
\
CONFIGFS_ATTR(iscsi_tpg_auth_, name);
DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
#define __DEF_TPG_AUTH_INT(prefix, name) \
static ssize_t __iscsi_##prefix##_##name##_show(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_node_auth *auth = &tpg->tpg_demo_auth; \
\
if (!capable(CAP_SYS_ADMIN)) \
return -EPERM; \
\
return snprintf(page, PAGE_SIZE, "%d\n", auth->name); \
}
#define DEF_TPG_AUTH_INT(name) \
__DEF_TPG_AUTH_INT(tpg_auth, name) \
static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item, \
char *page) \
{ \
return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page); \
} \
CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
DEF_TPG_AUTH_INT(authenticate_target);
static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
&iscsi_tpg_auth_attr_userid,
&iscsi_tpg_auth_attr_password,
&iscsi_tpg_auth_attr_authenticate_target,
&iscsi_tpg_auth_attr_userid_mutual,
&iscsi_tpg_auth_attr_password_mutual,
NULL,
};
/* End items for lio_target_tpg_auth_cit */
/* Start items for lio_target_tpg_param_cit */
#define DEF_TPG_PARAM(name) \
static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item, \
char *page) \
{ \
struct se_portal_group *se_tpg = param_to_tpg(item); \
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_##name##_store(struct config_item *item, \
const char *page, size_t count) \
{ \
struct se_portal_group *se_tpg = param_to_tpg(item); \
struct iscsi_portal_group *tpg = container_of(se_tpg, \
struct iscsi_portal_group, tpg_se_tpg); \
char *buf; \
int ret, len; \
\
buf = kzalloc(PAGE_SIZE, GFP_KERNEL); \
if (!buf) \
return -ENOMEM; \
len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page); \
if (isspace(buf[len-1])) \
buf[len-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; \
} \
CONFIGFS_ATTR(iscsi_tpg_param_, name)
DEF_TPG_PARAM(AuthMethod);
DEF_TPG_PARAM(HeaderDigest);
DEF_TPG_PARAM(DataDigest);
DEF_TPG_PARAM(MaxConnections);
DEF_TPG_PARAM(TargetAlias);
DEF_TPG_PARAM(InitialR2T);
DEF_TPG_PARAM(ImmediateData);
DEF_TPG_PARAM(MaxRecvDataSegmentLength);
DEF_TPG_PARAM(MaxXmitDataSegmentLength);
DEF_TPG_PARAM(MaxBurstLength);
DEF_TPG_PARAM(FirstBurstLength);
DEF_TPG_PARAM(DefaultTime2Wait);
DEF_TPG_PARAM(DefaultTime2Retain);
DEF_TPG_PARAM(MaxOutstandingR2T);
DEF_TPG_PARAM(DataPDUInOrder);
DEF_TPG_PARAM(DataSequenceInOrder);
DEF_TPG_PARAM(ErrorRecoveryLevel);
DEF_TPG_PARAM(IFMarker);
DEF_TPG_PARAM(OFMarker);
DEF_TPG_PARAM(IFMarkInt);
DEF_TPG_PARAM(OFMarkInt);
static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
&iscsi_tpg_param_attr_AuthMethod,
&iscsi_tpg_param_attr_HeaderDigest,
&iscsi_tpg_param_attr_DataDigest,
&iscsi_tpg_param_attr_MaxConnections,
&iscsi_tpg_param_attr_TargetAlias,
&iscsi_tpg_param_attr_InitialR2T,
&iscsi_tpg_param_attr_ImmediateData,
&iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
&iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
&iscsi_tpg_param_attr_MaxBurstLength,
&iscsi_tpg_param_attr_FirstBurstLength,
&iscsi_tpg_param_attr_DefaultTime2Wait,
&iscsi_tpg_param_attr_DefaultTime2Retain,
&iscsi_tpg_param_attr_MaxOutstandingR2T,
&iscsi_tpg_param_attr_DataPDUInOrder,
&iscsi_tpg_param_attr_DataSequenceInOrder,
&iscsi_tpg_param_attr_ErrorRecoveryLevel,
&iscsi_tpg_param_attr_IFMarker,
&iscsi_tpg_param_attr_OFMarker,
&iscsi_tpg_param_attr_IFMarkInt,
&iscsi_tpg_param_attr_OFMarkInt,
NULL,
};
/* End items for lio_target_tpg_param_cit */
/* Start items for lio_target_tpg_cit */
static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page)
{
struct se_portal_group *se_tpg = to_tpg(item);
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_enable_store(struct config_item *item,
const char *page, size_t count)
{
struct se_portal_group *se_tpg = to_tpg(item);
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
u32 op;
int ret;
ret = kstrtou32(page, 0, &op);
if (ret)
return ret;
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;
}
static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
char *page)
{
return target_show_dynamic_sessions(to_tpg(item), page);
}
CONFIGFS_ATTR(lio_target_tpg_, enable);
CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
static struct configfs_attribute *lio_target_tpg_attrs[] = {
&lio_target_tpg_attr_enable,
&lio_target_tpg_attr_dynamic_sessions,
NULL,
};
/* End items for lio_target_tpg_cit */
/* Start items for lio_target_tiqn_cit */
static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn,
const char *name)
{
struct iscsi_portal_group *tpg;
struct iscsi_tiqn *tiqn;
char *tpgt_str;
int ret;
u16 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_" */
ret = kstrtou16(tpgt_str, 0, &tpgt);
if (ret)
return NULL;
tpg = iscsit_alloc_portal_group(tiqn, tpgt);
if (!tpg)
return NULL;
ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
if (ret < 0)
goto free_out;
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);
free_out:
kfree(tpg);
return NULL;
}
static 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_lio_version_show(struct config_item *item,
char *page)
{
return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
}
CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
static struct configfs_attribute *lio_target_wwn_attrs[] = {
&lio_target_wwn_attr_lio_version,
NULL,
};
static struct se_wwn *lio_target_call_coreaddtiqn(
struct target_fabric_configfs *tf,
struct config_group *group,
const char *name)
{
struct iscsi_tiqn *tiqn;
tiqn = iscsit_add_tiqn((unsigned char *)name);
if (IS_ERR(tiqn))
return ERR_CAST(tiqn);
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;
}
static void lio_target_add_wwn_groups(struct se_wwn *wwn)
{
struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
"iscsi_instance", &iscsi_stat_instance_cit);
configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
&tiqn->tiqn_wwn.fabric_stat_group);
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
"iscsi_sess_err", &iscsi_stat_sess_err_cit);
configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
&tiqn->tiqn_wwn.fabric_stat_group);
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
"iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
&tiqn->tiqn_wwn.fabric_stat_group);
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
"iscsi_login_stats", &iscsi_stat_login_cit);
configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
&tiqn->tiqn_wwn.fabric_stat_group);
config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
"iscsi_logout_stats", &iscsi_stat_logout_cit);
configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
&tiqn->tiqn_wwn.fabric_stat_group);
}
static void lio_target_call_coredeltiqn(
struct se_wwn *wwn)
{
struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
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_##name##_show(struct config_item *item, char *page) \
{ \
return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
page); \
} \
static ssize_t iscsi_disc_##name##_store(struct config_item *item, \
const char *page, size_t count) \
{ \
return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl, \
page, count); \
\
} \
CONFIGFS_ATTR(iscsi_disc_, name)
DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
#define DEF_DISC_AUTH_INT(name) \
__DEF_NACL_AUTH_INT(disc, name) \
static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
{ \
return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
page); \
} \
CONFIGFS_ATTR_RO(iscsi_disc_, name)
DEF_DISC_AUTH_INT(authenticate_target);
static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
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_enforce_discovery_auth_store(struct config_item *item,
const char *page, size_t count)
{
struct iscsi_param *param;
struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
u32 op;
int err;
err = kstrtou32(page, 0, &op);
if (err)
return -EINVAL;
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;
}
CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
&iscsi_disc_attr_userid,
&iscsi_disc_attr_password,
&iscsi_disc_attr_authenticate_target,
&iscsi_disc_attr_userid_mutual,
&iscsi_disc_attr_password_mutual,
&iscsi_disc_attr_enforce_discovery_auth,
NULL,
};
/* End lio_target_discovery_auth_cit */
/* Start functions for target_core_fabric_ops */
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 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, "%6phN", sess->isid);
}
static int lio_queue_data_in(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
struct iscsi_conn *conn = cmd->conn;
cmd->i_state = ISTATE_SEND_DATAIN;
return conn->conn_transport->iscsit_queue_data_in(conn, cmd);
}
static int lio_write_pending(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
struct iscsi_conn *conn = cmd->conn;
if (!cmd->immediate_data && !cmd->unsolicited_data)
return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
return 0;
}
static int lio_queue_status(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
struct iscsi_conn *conn = cmd->conn;
cmd->i_state = ISTATE_SEND_STATUS;
if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
}
return conn->conn_transport->iscsit_queue_status(conn, cmd);
}
static void 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);
}
static void lio_aborted_task(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
}
static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
{
return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
}
static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
}
static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpgt;
}
static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
}
static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
}
static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
}
static int lio_tpg_check_demo_mode_write_protect(
struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
}
static int lio_tpg_check_prod_mode_write_protect(
struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
}
static int lio_tpg_check_prot_fabric_only(
struct se_portal_group *se_tpg)
{
/*
* Only report fabric_prot_type if t10_pi has also been enabled
* for incoming ib_isert sessions.
*/
if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
return 0;
return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
}
/*
* This function calls iscsit_inc_session_usage_count() on the
* struct iscsi_session in question.
*/
static void lio_tpg_close_session(struct se_session *se_sess)
{
struct iscsi_session *sess = se_sess->fabric_sess_ptr;
struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;
spin_lock_bh(&se_tpg->session_lock);
spin_lock(&sess->conn_lock);
if (atomic_read(&sess->session_fall_back_to_erl0) ||
atomic_read(&sess->session_logout) ||
atomic_read(&sess->session_close) ||
(sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
spin_unlock(&sess->conn_lock);
spin_unlock_bh(&se_tpg->session_lock);
return;
}
iscsit_inc_session_usage_count(sess);
atomic_set(&sess->session_reinstatement, 1);
atomic_set(&sess->session_fall_back_to_erl0, 1);
atomic_set(&sess->session_close, 1);
spin_unlock(&sess->conn_lock);
iscsit_stop_time2retain_timer(sess);
spin_unlock_bh(&se_tpg->session_lock);
iscsit_stop_session(sess, 1, 1);
iscsit_dec_session_usage_count(sess);
}
static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
{
return iscsi_tpg(se_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);
struct se_portal_group *se_tpg = se_acl->se_tpg;
struct iscsi_portal_group *tpg = container_of(se_tpg,
struct iscsi_portal_group, tpg_se_tpg);
acl->node_attrib.nacl = acl;
iscsit_set_default_node_attribues(acl, tpg);
}
static int lio_check_stop_free(struct se_cmd *se_cmd)
{
return target_put_sess_cmd(se_cmd);
}
static void lio_release_cmd(struct se_cmd *se_cmd)
{
struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
iscsit_release_cmd(cmd);
}
const struct target_core_fabric_ops iscsi_ops = {
.module = THIS_MODULE,
.fabric_alias = "iscsi",
.fabric_name = "iSCSI",
.node_acl_size = sizeof(struct iscsi_node_acl),
.tpg_get_wwn = lio_tpg_get_endpoint_wwn,
.tpg_get_tag = lio_tpg_get_tag,
.tpg_get_default_depth = lio_tpg_get_default_depth,
.tpg_check_demo_mode = lio_tpg_check_demo_mode,
.tpg_check_demo_mode_cache = lio_tpg_check_demo_mode_cache,
.tpg_check_demo_mode_write_protect =
lio_tpg_check_demo_mode_write_protect,
.tpg_check_prod_mode_write_protect =
lio_tpg_check_prod_mode_write_protect,
.tpg_check_prot_fabric_only = &lio_tpg_check_prot_fabric_only,
.tpg_get_inst_index = lio_tpg_get_inst_index,
.check_stop_free = lio_check_stop_free,
.release_cmd = lio_release_cmd,
.close_session = lio_tpg_close_session,
.sess_get_index = lio_sess_get_index,
.sess_get_initiator_sid = lio_sess_get_initiator_sid,
.write_pending = lio_write_pending,
.set_default_node_attributes = lio_set_default_node_attributes,
.get_cmd_state = iscsi_get_cmd_state,
.queue_data_in = lio_queue_data_in,
.queue_status = lio_queue_status,
.queue_tm_rsp = lio_queue_tm_rsp,
.aborted_task = lio_aborted_task,
.fabric_make_wwn = lio_target_call_coreaddtiqn,
.fabric_drop_wwn = lio_target_call_coredeltiqn,
.add_wwn_groups = lio_target_add_wwn_groups,
.fabric_make_tpg = lio_target_tiqn_addtpg,
.fabric_drop_tpg = lio_target_tiqn_deltpg,
.fabric_make_np = lio_target_call_addnptotpg,
.fabric_drop_np = lio_target_call_delnpfromtpg,
.fabric_init_nodeacl = lio_target_init_nodeacl,
.tfc_discovery_attrs = lio_target_discovery_auth_attrs,
.tfc_wwn_attrs = lio_target_wwn_attrs,
.tfc_tpg_base_attrs = lio_target_tpg_attrs,
.tfc_tpg_attrib_attrs = lio_target_tpg_attrib_attrs,
.tfc_tpg_auth_attrs = lio_target_tpg_auth_attrs,
.tfc_tpg_param_attrs = lio_target_tpg_param_attrs,
.tfc_tpg_np_base_attrs = lio_target_portal_attrs,
.tfc_tpg_nacl_base_attrs = lio_target_initiator_attrs,
.tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs,
.tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs,
.tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs,
.write_pending_must_be_called = true,
};
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