/*

 * iSCSI flashnode helpers

 *

 * Copyright (C) 2013 QLogic Corporation.

 * Maintained by open-iscsi@googlegroups.com

 *

 * 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.

 *

 * See the file COPYING included with this distribution for more details.

 */

#ifndef FLASHNODE_H

#define FLASHNODE_H

#include <sys/types.h>

#include <netdb.h>

#include <net/if.h>

#include "types.h"

#include "config.h"

#include "auth.h"

#define MAX_FLASHNODE_IDX UINT_MAX

typedef enum portal_type {

	IPV4,

	IPV6,

} portal_type_e;

typedef struct flashnode_sess_rec {

	char			targetname[TARGET_NAME_MAXLEN];

	char			targetalias[TARGET_NAME_MAXLEN];

	char			username[AUTH_STR_MAX_LEN];

	char			username_in[AUTH_STR_MAX_LEN];

	char			password[AUTH_STR_MAX_LEN];

	char			password_in[AUTH_STR_MAX_LEN];

	/* indicates if discovery was done through iSNS discovery service

	 * or through sendTarget */

	char			discovery_parent_type[ISCSI_MAX_STR_LEN];

	char			isid[16];

	char			portal_type[5]; /* ipv4 or ipv6 */

	unsigned		first_burst_len;

	unsigned		max_burst_len;

	uint16_t		def_time2wait;

	uint16_t		def_time2retain;

	uint16_t		max_outstanding_r2t;

	uint16_t		tsid;

	uint16_t		def_taskmgmt_tmo;

	uint16_t		tpgt;

	uint16_t		chap_out_idx;

	uint16_t		chap_in_idx;

	/* index of iSCSI discovery session if the entry is

	 * discovered by iSCSI discovery session

	 */

	uint16_t		discovery_parent_idx;

	/* Firmware auto sendtarget discovery disable */

	uint8_t			auto_snd_tgt_disable;

	uint8_t			discovery_session;

	/* indicates if this flashnode entry is enabled or disabled */

	uint8_t			entry_enable;

	uint8_t			immediate_data;

	uint8_t			initial_r2t;

	uint8_t			data_seq_in_order;

	uint8_t			data_pdu_in_order;

	uint8_t			chap_auth_en;

	/* enables firmware to auto logout the discovery session on discovery

	 * completion

	 */

	uint8_t			discovery_logout_en;

	uint8_t			bidi_chap_en;

	/* makes authentication for discovery session optional */

	uint8_t			discovery_auth_optional;

	uint8_t			erl;

	uint8_t			is_boot_target;

} flashnode_sess_rec_t;

typedef struct flashnode_conn_rec {

	char			ipaddress[NI_MAXHOST];

	char			redirect_ipaddr[NI_MAXHOST];

	char			link_local_ipv6[NI_MAXHOST];

	unsigned		max_recv_dlength;

	unsigned		max_xmit_dlength;

	unsigned		max_segment_size;

	unsigned		tcp_xmit_wsf;

	unsigned		tcp_recv_wsf;

	uint32_t		stat_sn;

	uint32_t		exp_stat_sn;

	uint16_t		keepalive_tmo;

	uint16_t		port;

	uint16_t		local_port;

	uint16_t		ipv6_flow_lbl;

	/* Link local IPv6 address is assigned by firmware or driver */

	uint8_t			is_fw_assigned_ipv6;

	uint8_t			header_digest_en;

	uint8_t			data_digest_en;

	uint8_t			snack_req_en;

	/* tcp timestamp negotiation status */

	uint8_t			tcp_timestamp_stat;

	uint8_t			tcp_nagle_disable;

	/* tcp window scale factor */

	uint8_t			tcp_wsf_disable;

	uint8_t			tcp_timer_scale;

	uint8_t			tcp_timestamp_en;

	uint8_t			fragment_disable;

	uint8_t			ipv4_tos;

	uint8_t			ipv6_traffic_class;

} flashnode_conn_rec_t;

struct flashnode_rec {

	struct list_head	list;

	char			transport_name[ISCSI_TRANSPORT_NAME_MAXLEN];

	flashnode_sess_rec_t	sess;

	flashnode_conn_rec_t	conn[ISCSI_CONN_MAX];

};

extern int flashnode_info_print_flat(void *data, struct flashnode_rec *tgt,

				     uint32_t host_no, uint32_t flashnode_idx);

extern int iscsi_logout_flashnode_sid(struct iscsi_transport *t,

				      uint32_t host_no, uint32_t sid);

extern int flashnode_build_config(struct list_head *params,

				  struct flashnode_rec *flashnode,

				  struct iovec *iovs);

#endif