iscsi_target_configfs.c 57.0 KB
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/*******************************************************************************
 * This file contains the configfs implementation for iSCSI Target mode
 * from the LIO-Target Project.
 *
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 * (c) Copyright 2007-2013 Datera, Inc.
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 *
 * 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>
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#include <linux/ctype.h>
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#include <linux/export.h>
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#include <linux/inet.h>
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#include <target/target_core_base.h>
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#include <target/target_core_fabric.h>
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#include <target/target_core_fabric_configfs.h>
#include <target/target_core_configfs.h>
#include <target/configfs_macros.h>
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#include <target/iscsi/iscsi_transport.h>
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#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);
};

/* 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;
	u32 op;
	int ret;

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	ret = kstrtou32(page, 0, &op);
	if (ret)
		return ret;
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	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);

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static ssize_t lio_target_np_show_iser(
	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_iser;
	ssize_t rb;

	tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
	if (tpg_np_iser)
		rb = sprintf(page, "1\n");
	else
		rb = sprintf(page, "0\n");

	return rb;
}

static ssize_t lio_target_np_store_iser(
	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_iser = NULL;
	char *endptr;
	u32 op;
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	int rc = 0;
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	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) {
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		rc = request_module("ib_isert");
		if (rc != 0) {
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			pr_warn("Unable to request_module for ib_isert\n");
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			rc = 0;
		}
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		tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
				np->np_ip, tpg_np, ISCSI_INFINIBAND);
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		if (IS_ERR(tpg_np_iser)) {
			rc = PTR_ERR(tpg_np_iser);
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			goto out;
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		}
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	} else {
		tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
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		if (tpg_np_iser) {
			rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
			if (rc < 0)
				goto out;
		}
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	}

	iscsit_put_tpg(tpg);
	return count;
out:
	iscsit_put_tpg(tpg);
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	return rc;
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}

TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);

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static struct configfs_attribute *lio_target_portal_attrs[] = {
	&lio_target_np_sctp.attr,
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	&lio_target_np_iser.attr,
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	NULL,
};

/* Stop items for lio_target_portal_cit */

/* Start items for lio_target_np_cit */

#define MAX_PORTAL_LEN		256

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static struct se_tpg_np *lio_target_call_addnptotpg(
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	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);
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	snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
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	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 ":" */

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		ret = kstrtoul(port_str, 0, &port);
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		if (ret < 0) {
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			pr_err("kstrtoul() failed for port_str: %d\n", ret);
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			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 ":" */

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		ret = kstrtoul(port_str, 0, &port);
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		if (ret < 0) {
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			pr_err("kstrtoul() failed for port_str: %d\n", ret);
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			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)
	 *
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	 * can be enabled with attributes under
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	 * 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);
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		return ERR_CAST(tpg_np);
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	}
	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);			\
									\
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	return sprintf(page, "%u\n", nacl->node_attrib.name);		\
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}									\
									\
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);			\
	u32 val;							\
	int ret;							\
									\
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	ret = kstrtou32(page, 0, &val);					\
	if (ret)							\
		return ret;						\
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	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;						\
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	if (count >= sizeof(auth->name))				\
		return -EINVAL;						\
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	snprintf(auth->name, sizeof(auth->name), "%s", page);		\
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	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;

672 673 674 675
		rb += sprintf(page+rb, "InitiatorName: %s\n",
			sess->sess_ops->InitiatorName);
		rb += sprintf(page+rb, "InitiatorAlias: %s\n",
			sess->sess_ops->InitiatorAlias);
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		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;
	u32 cmdsn_depth = 0;
	int ret;

795 796 797
	ret = kstrtou32(page, 0, &cmdsn_depth);
	if (ret)
		return ret;
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	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);

839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861
static ssize_t lio_target_nacl_show_tag(
	struct se_node_acl *se_nacl,
	char *page)
{
	return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
}

static ssize_t lio_target_nacl_store_tag(
	struct se_node_acl *se_nacl,
	const char *page,
	size_t count)
{
	int ret;

	ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);

	if (ret < 0)
		return ret;
	return count;
}

TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);

862 863 864
static struct configfs_attribute *lio_target_initiator_attrs[] = {
	&lio_target_nacl_info.attr,
	&lio_target_nacl_cmdsn_depth.attr,
865
	&lio_target_nacl_tag.attr,
866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898
	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);

899
	cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
900 901 902 903 904 905 906 907 908
	/*
	 * 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;

909 910
	acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
	stats_cg = &se_nacl->acl_fabric_stat_group;
911

912
	stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
913 914 915 916 917 918 919 920 921
				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);
	}

922
	stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
923
	stats_cg->default_groups[1] = NULL;
924
	config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968
			"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;						\
									\
969
	rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);		\
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	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);	\
	u32 val;							\
	int ret;							\
									\
	if (iscsit_get_tpg(tpg) < 0)					\
		return -EINVAL;						\
									\
987 988 989
	ret = kstrtou32(page, 0, &val);					\
	if (ret)							\
		goto out;						\
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	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);
1043 1044 1045 1046 1047
/*
 * Define iscsi_tpg_attrib_s_demo_mode_discovery,
 */
DEF_TPG_ATTRIB(demo_mode_discovery);
TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
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/*
 * Define iscsi_tpg_attrib_s_default_erl
 */
DEF_TPG_ATTRIB(default_erl);
TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1053 1054 1055 1056 1057
/*
 * Define iscsi_tpg_attrib_s_t10_pi
 */
DEF_TPG_ATTRIB(t10_pi);
TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1058 1059 1060 1061 1062 1063 1064 1065 1066 1067

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,
1068
	&iscsi_tpg_attrib_demo_mode_discovery.attr,
1069
	&iscsi_tpg_attrib_default_erl.attr,
1070
	&iscsi_tpg_attrib_t10_pi.attr,
1071 1072 1073 1074 1075
	NULL,
};

/* End items for lio_target_tpg_attrib_cit */

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/* Start items for lio_target_tpg_auth_cit */

#define __DEF_TPG_AUTH_STR(prefix, name, flags)					\
static ssize_t __iscsi_##prefix##_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_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##_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);		\
	struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;			\
										\
	if (!capable(CAP_SYS_ADMIN))						\
		return -EPERM;							\
										\
1105
	snprintf(auth->name, sizeof(auth->name), "%s", page);			\
1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200
	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_INT(prefix, name)					\
static ssize_t __iscsi_##prefix##_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_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_STR(name, flags)						\
	__DEF_TPG_AUTH_STR(tpg_auth, name, flags)				\
static ssize_t iscsi_tpg_auth_show_##name(					\
	struct se_portal_group *se_tpg,						\
	char *page)								\
{										\
	return __iscsi_tpg_auth_show_##name(se_tpg, page);			\
}										\
										\
static ssize_t iscsi_tpg_auth_store_##name(					\
	struct se_portal_group *se_tpg,						\
	const char *page,							\
	size_t count)								\
{										\
	return __iscsi_tpg_auth_store_##name(se_tpg, page, count);		\
}

#define DEF_TPG_AUTH_INT(name)							\
	__DEF_TPG_AUTH_INT(tpg_auth, name)					\
static ssize_t iscsi_tpg_auth_show_##name(					\
	struct se_portal_group *se_tpg,						\
	char *page)								\
{										\
	return __iscsi_tpg_auth_show_##name(se_tpg, page);			\
}

#define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
#define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);

/*
 *  * One-way authentication userid
 *   */
DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
/*
 *  * One-way authentication password
 *   */
DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
/*
 *  * Enforce mutual authentication
 *   */
DEF_TPG_AUTH_INT(authenticate_target);
TPG_AUTH_ATTR_RO(authenticate_target);
/*
 *  * Mutual authentication userid
 *   */
DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
/*
 *  * Mutual authentication password
 *   */
DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);

static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
	&iscsi_tpg_auth_userid.attr,
	&iscsi_tpg_auth_password.attr,
	&iscsi_tpg_auth_authenticate_target.attr,
	&iscsi_tpg_auth_userid_mutual.attr,
	&iscsi_tpg_auth_password_mutual.attr,
	NULL,
};

/* End items for lio_target_tpg_auth_cit */

1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
/* 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;							\
1235
	int ret, len;							\
1236 1237 1238 1239
									\
	buf = kzalloc(PAGE_SIZE, GFP_KERNEL);				\
	if (!buf)							\
		return -ENOMEM;						\
1240 1241 1242
	len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);	\
	if (isspace(buf[len-1]))					\
		buf[len-1] = '\0'; /* Kill newline */			\
1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287
									\
	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);

1288 1289 1290
DEF_TPG_PARAM(MaxXmitDataSegmentLength);
TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);

1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
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,
1336
	&iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379
	&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);
	u32 op;
1380
	int ret;
1381

1382 1383 1384
	ret = kstrtou32(page, 0, &op);
	if (ret)
		return ret;
1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424
	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 */

1425
static struct se_portal_group *lio_target_tiqn_addtpg(
1426 1427 1428 1429 1430 1431
	struct se_wwn *wwn,
	struct config_group *group,
	const char *name)
{
	struct iscsi_portal_group *tpg;
	struct iscsi_tiqn *tiqn;
1432 1433 1434
	char *tpgt_str;
	int ret;
	u16 tpgt;
1435 1436 1437 1438 1439

	tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
	/*
	 * Only tpgt_# directory groups can be created below
	 * target/iscsi/iqn.superturodiskarry/
1440
	 */
1441 1442 1443 1444 1445 1446 1447
	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_" */
1448 1449 1450
	ret = kstrtou16(tpgt_str, 0, &tpgt);
	if (ret)
		return NULL;
1451 1452 1453 1454 1455 1456 1457

	tpg = iscsit_alloc_portal_group(tiqn, tpgt);
	if (!tpg)
		return NULL;

	ret = core_tpg_register(
			&lio_target_fabric_configfs->tf_ops,
J
Jörn Engel 已提交
1458
			wwn, &tpg->tpg_se_tpg, tpg,
1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476
			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;
}

1477
static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498
{
	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)
{
1499
	return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1500 1501 1502 1503 1504 1505 1506 1507 1508
}

TF_WWN_ATTR_RO(lio_target, lio_version);

static struct configfs_attribute *lio_target_wwn_attrs[] = {
	&lio_target_wwn_lio_version.attr,
	NULL,
};

1509
static struct se_wwn *lio_target_call_coreaddtiqn(
1510 1511 1512 1513 1514 1515 1516 1517 1518
	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))
1519
		return ERR_CAST(tiqn);
1520 1521 1522 1523 1524
	/*
	 * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
	 */
	stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;

1525
	stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1526 1527 1528 1529 1530 1531 1532 1533
				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);
	}

1534 1535 1536 1537 1538
	stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
	stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
	stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
	stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
	stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1539
	stats_cg->default_groups[5] = NULL;
1540
	config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1541
			"iscsi_instance", &iscsi_stat_instance_cit);
1542
	config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1543
			"iscsi_sess_err", &iscsi_stat_sess_err_cit);
1544
	config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1545
			"iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1546
	config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1547
			"iscsi_login_stats", &iscsi_stat_login_cit);
1548
	config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1549 1550 1551 1552 1553 1554 1555 1556
			"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;
}

1557
static void lio_target_call_coredeltiqn(
1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658
	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;
	u32 op;
1659
	int err;
1660

1661 1662 1663
	err = kstrtou32(page, 0, &op);
	if (err)
		return -EINVAL;
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	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);

1734 1735
	/* only used for printks or comparism with ->ref_task_tag */
	return (__force u32)cmd->init_task_tag;
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}

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, "%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;
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	cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);

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	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);
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	struct iscsi_conn *conn = cmd->conn;
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	if (!cmd->immediate_data && !cmd->unsolicited_data)
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		return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
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	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;
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	if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
		iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
		return 0;
	}
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	cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);

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	return 0;
}

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static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
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{
	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);
}

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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);
}

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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;

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	return tpg->tpg_attrib.default_cmdsn_depth;
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}

static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
{
	struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;

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	return tpg->tpg_attrib.generate_node_acls;
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}

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;

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	return tpg->tpg_attrib.cache_dynamic_acls;
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}

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;

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	return tpg->tpg_attrib.demo_mode_write_protect;
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}

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;

1877
	return tpg->tpg_attrib.prod_mode_write_protect;
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}

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_stop_time2retain_timer(sess);
1910
	iscsit_stop_session(sess, 1, 1);
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	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_close_session(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);
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	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);
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	acl->node_attrib.nacl = acl;
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	iscsit_set_default_node_attribues(acl, tpg);
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}

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static int lio_check_stop_free(struct se_cmd *se_cmd)
{
	return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
}

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static void lio_release_cmd(struct se_cmd *se_cmd)
{
	struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);

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	pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
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	iscsit_release_cmd(cmd);
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}

/* 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;
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	fabric->tf_ops.check_stop_free = &lio_check_stop_free,
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	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.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;
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	fabric->tf_ops.aborted_task = &lio_aborted_task;
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	/*
	 * 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
	 */
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Andy Grover 已提交
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	fabric->tf_cit_tmpl.tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
	fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_auth_cit.ct_attrs = lio_target_tpg_auth_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
	fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
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	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");
}