/*

 * iSCSI sysfs

 *

 * Copyright (C) 2006 Mike Christie

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

 * Copyright (C) 2015      Peter Hatina <phatina@redhat.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.

 */

#ifndef ISCSI_SYSFS_H

#define ISCSI_SYSFS_H

#include <sys/types.h>

#include "sysfs.h"

#include "types.h"

#include "iscsi_proto.h"

#include "config.h"

struct session_info;

struct host_info;

struct iscsi_session;

struct iscsi_conn;

struct iscsi_session_operational_config;

struct iscsi_conn_operational_config;

struct iscsi_auth_config;

struct flashnode_rec;

#define SCSI_MAX_STATE_VALUE 32

extern void free_transports(void);

extern char *iscsi_sysfs_get_iscsi_kernel_version(void);

extern int iscsi_sysfs_get_sessioninfo_by_id(struct session_info *info,

					     char *sys_session);

extern int iscsi_sysfs_session_has_leadconn(uint32_t sid);

typedef int (iscsi_sysfs_session_op_fn)(void *, struct session_info *);

typedef int (iscsi_sysfs_host_op_fn)(void *, struct host_info *);

typedef int (iscsi_sysfs_flashnode_op_fn)(void *, struct flashnode_rec *,

					  uint32_t, uint32_t);

typedef int (iscsi_sysfs_iface_op_fn)(void *, struct iface_rec *);

extern const char *iscsi_sysfs_get_session_path(void);

extern int iscsi_sysfs_for_each_iface_on_host(void *data, uint32_t host_no,

					      int *nr_found,

					      iscsi_sysfs_iface_op_fn *fn);

extern int iscsi_sysfs_for_each_session(void *data, int *nr_found,

					iscsi_sysfs_session_op_fn *fn,

					int in_parallel);

extern int iscsi_sysfs_count_sessions(void);

extern int iscsi_sysfs_for_each_host(void *data, int *nr_found,

				     iscsi_sysfs_host_op_fn *fn);

extern uint32_t iscsi_sysfs_get_host_no_from_sid(uint32_t sid, int *err);

extern uint32_t iscsi_sysfs_get_host_no_from_hwinfo(struct iface_rec *iface,

						    int *rc);

extern uint32_t iscsi_sysfs_get_host_no_from_hwaddress(char *hwaddress, int *rc);

extern int iscsi_sysfs_get_hostinfo_by_host_no(struct host_info *hinfo);

extern int iscsi_sysfs_for_each_flashnode(void *data, uint32_t host_no,

					  int *nr_found,

					  iscsi_sysfs_flashnode_op_fn *fn);

extern int iscsi_sysfs_get_flashnode_info(struct flashnode_rec *fnode,

					  uint32_t host_no,

					  uint32_t flashnode_id);

extern int iscsi_sysfs_update_flashnode_param(uint32_t host_no,

					      uint32_t flashnode_id,

					      char *name, char *val);

extern int iscsi_sysfs_create_flashnode(uint32_t host_no, char *ipver);

extern int iscsi_sysfs_del_flashnode(uint32_t host_no, uint32_t flashnode_id);

extern int iscsi_sysfs_login_flashnode(uint32_t host_no, uint32_t flashnode_id);

extern int iscsi_sysfs_logout_flashnode(uint32_t host_no,

					uint32_t flashnode_id);

extern int iscsi_sysfs_get_sid_from_path(char *session);

extern char *iscsi_sysfs_get_blockdev_from_lun(int hostno, int target, int sid);

static inline int is_valid_operational_value(int value)

{

	return value != -1;

}

extern void iscsi_sysfs_get_auth_conf(int sid, struct iscsi_auth_config *conf);

extern void iscsi_sysfs_get_negotiated_session_conf(int sid,

				struct iscsi_session_operational_config *conf);

extern void iscsi_sysfs_get_negotiated_conn_conf(int sid,

				struct iscsi_conn_operational_config *conf);

extern pid_t iscsi_sysfs_scan_host(int hostno, int async, int autoscan);

extern int iscsi_sysfs_get_session_state(char *state, int sid);

extern int iscsi_sysfs_get_host_state(char *state, int host_no);

extern int iscsi_sysfs_get_device_state(char *state, int host_no, int target,

					int lun);

extern int iscsi_sysfs_get_exp_statsn(int sid);

extern void iscsi_sysfs_set_queue_depth(void *data, int hostno, int target,

					int lun);

extern void iscsi_sysfs_set_device_online(void *data, int hostno, int target,

					  int lun);

extern void iscsi_sysfs_rescan_device(void *data, int hostno, int target,

				      int lun);

extern int iscsi_sysfs_for_each_device(void *data, int host_no, uint32_t sid,

				void (* fn)(void *, int host_no, int target,

					    int lun));

extern struct iscsi_transport *iscsi_sysfs_get_transport_by_hba(uint32_t host_no);

extern struct iscsi_transport *iscsi_sysfs_get_transport_by_session(char *sys_session);

extern struct iscsi_transport *iscsi_sysfs_get_transport_by_sid(uint32_t sid);

extern struct iscsi_transport *iscsi_sysfs_get_transport_by_name(char *transport_name);

extern int iscsi_sysfs_is_transport_loaded(char *transport_name);

extern int iscsi_sysfs_session_supports_nop(int sid);

extern int iscsi_sysfs_session_user_created(int sid);

extern struct list_head transports;

#endif