/*

 * iSCSI transport

 *

 * Copyright (C) 2006 Mike Christie

 * Copyright (C) 2006 Red Hat, Inc. All rights reserved.

 *

 * 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.

 */

#ifndef ISCSI_TRANSPORT_H

#define ISCSI_TRANSPORT_H

#include "types.h"

#include "config.h"

enum set_host_ip_opts {

	SET_HOST_IP_NOT_REQ,	/* iface.ipaddress is not supported	*/

	SET_HOST_IP_REQ,	/* iface.ipaddress must be specified	*/

	SET_HOST_IP_OPT,	/* iface.ipaddress is not required	*/

};

struct iscsi_transport;

struct iscsi_conn;

struct iscsi_transport_template {

	const char *name;

	uint8_t rdma;

	/*

	 * Drivers should set this if they require iscsid to set

	 * the host's ip address.

	 */

	uint8_t set_host_ip;

	uint8_t use_boot_info;

        uint8_t bind_ep_required;

	uint8_t no_netdev;

	/* be2iscsi has a single host vlan setting,

	 * but uses 2 ifaces for ipv4 and ipv6 settings; keep them in sync */

	uint8_t sync_vlan_settings;

	int (*ep_connect) (struct iscsi_conn *conn, int non_blocking);

	int (*ep_poll) (struct iscsi_conn *conn, int timeout_ms);

	void (*ep_disconnect) (struct iscsi_conn *conn);

	void (*create_conn) (struct iscsi_conn *conn);

	int (*set_net_config) (struct iscsi_transport *t,

			       struct iface_rec *iface,

			       struct iscsi_session *session);

	int (*exec_ping) (struct iscsi_transport *t,

			  struct iface_rec *iface, int datalen,

			  struct sockaddr_storage *dst_addr, uint32_t *status);

};

/* represents data path provider */

struct iscsi_transport {

	struct list_head list;

	uint64_t handle;

	uint32_t caps;

	char name[ISCSI_TRANSPORT_NAME_MAXLEN];

	struct list_head sessions;

	struct iscsi_transport_template *template;

};

extern int set_transport_template(struct iscsi_transport *t);

extern int transport_load_kmod(char *transport_name);

extern int transport_probe_for_offload(void);

#endif