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/*
* iSCSI Configuration
*
* Copyright (C) 2002 Cisco Systems, Inc.
* maintained by linux-iscsi-devel@lists.sourceforge.net
*
* 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 CONFIG_H
#define CONFIG_H
#include <netdb.h>
#include <net/if.h>
#include "types.h"
#include "auth.h" /* for the username and password sizes */
#include "list.h"
#include "iscsi_proto.h"
#include "iscsi_net_util.h"
/* ISIDs now have a typed naming authority in them. We use an OUI */
#define DRIVER_ISID_0 0x00
#define DRIVER_ISID_1 0x02
#define DRIVER_ISID_2 0x3D
/* number of possible connections per session */
#define ISCSI_CONN_MAX 1
/* max len of interface */
#define ISCSI_MAX_IFACE_LEN 65
/* the following structures store the options set in the config file.
* a structure is defined for each logically-related group of options.
* if you are adding a new option, first check if it should belong
* to one of the existing groups. If it does, add it. If not, define
* a new structure.
*/
/* all authentication-related options should be added to this structure.
* this structure is per-session, and can be configured
* by TargetName but not Subnet.
*/
struct iscsi_auth_config {
unsigned int authmethod;
char username[AUTH_STR_MAX_LEN];
unsigned char password[AUTH_STR_MAX_LEN];
unsigned int password_length;
char username_in[AUTH_STR_MAX_LEN];
unsigned char password_in[AUTH_STR_MAX_LEN];
unsigned int password_in_length;
};
/* all per-connection timeouts go in this structure.
* this structure is per-portal, and can be configured
* both by TargetName and Subnet.
*/
struct iscsi_connection_timeout_config {
int login_timeout;
int logout_timeout;
int auth_timeout;
int active_timeout;
int noop_out_interval;
int noop_out_timeout;
};
/* all per-connection timeouts go in this structure.
* this structure is per-session, and can be configured
* by TargetName but not by Subnet.
*/
struct iscsi_session_timeout_config {
int replacement_timeout;
};
/* all error handling timeouts go in this structure.
* this structure is per-portal, and can be configured
* both by TargetName and Subnet.
*/
struct iscsi_error_timeout_config {
int abort_timeout;
int host_reset_timeout;
int lu_reset_timeout;
int tgt_reset_timeout;
};
/* all TCP options go in this structure.
* this structure is per-portal, and can be configured
* both by TargetName and Subnet.
*/
struct iscsi_tcp_config {
int window_size;
int type_of_service; /* try to set IP TOS bits */
};
struct iscsi_conn_operational_config {
int MaxRecvDataSegmentLength;
int MaxXmitDataSegmentLength;
int HeaderDigest;
int DataDigest;
int IFMarker;
int OFMarker;
};
/* all iSCSI operational params go in this structure.
* this structure is per-portal, and can be configured
* both by TargetName and Subnet.
*/
struct iscsi_session_operational_config {
int DataPDUInOrder;
int DataSequenceInOrder;
int protocol;
int InitialR2T;
int ImmediateData;
int FirstBurstLength;
int MaxBurstLength;
int DefaultTime2Wait;
int DefaultTime2Retain;
int MaxConnections;
int MaxOutstandingR2T;
int ERL;
int FastAbort;
};
#define CONFIG_DIGEST_NEVER 0
#define CONFIG_DIGEST_ALWAYS 1
#define CONFIG_DIGEST_PREFER_ON 2
#define CONFIG_DIGEST_PREFER_OFF 3
struct iscsi_sendtargets_config {
int reopen_max;
struct iscsi_auth_config auth;
struct iscsi_connection_timeout_config conn_timeo;
struct iscsi_conn_operational_config iscsi;
};
struct iscsi_slp_config {
char *scopes;
char *interfaces; /* for multicast, list of interfaces names,
* "all", or "none" */
int poll_interval;
struct iscsi_auth_config auth;
};
typedef enum iscsi_startup {
ISCSI_STARTUP_MANUAL,
ISCSI_STARTUP_AUTOMATIC,
ISCSI_STARTUP_ONBOOT,
} iscsi_startup_e;
typedef enum discovery_type {
DISCOVERY_TYPE_SENDTARGETS,
DISCOVERY_TYPE_OFFLOAD_SENDTARGETS,
DISCOVERY_TYPE_SLP,
DISCOVERY_TYPE_ISNS,
DISCOVERY_TYPE_STATIC,
DISCOVERY_TYPE_FW,
} discovery_type_e;
typedef struct conn_rec {
iscsi_startup_e startup;
char address[NI_MAXHOST];
int port;
struct iscsi_tcp_config tcp;
struct iscsi_connection_timeout_config timeo;
struct iscsi_conn_operational_config iscsi;
} conn_rec_t;
typedef struct session_rec {
int initial_cmdsn;
int reopen_max;
int xmit_thread_priority;
int cmds_max;
int queue_depth;
int initial_login_retry_max;
struct iscsi_auth_config auth;
struct iscsi_session_timeout_config timeo;
struct iscsi_error_timeout_config err_timeo;
struct iscsi_session_operational_config iscsi;
} session_rec_t;
#define ISCSI_TRANSPORT_NAME_MAXLEN 16
typedef struct iface_rec {
struct list_head list;
/* iscsi iface record name */
char name[ISCSI_MAX_IFACE_LEN];
/* network layer iface name (eth0) */
char netdev[IFNAMSIZ];
char ipaddress[NI_MAXHOST];
/*
* TODO: we may have to make this bigger and interconnect
* specific for infinniband
*/
char hwaddress[ISCSI_HWADDRESS_BUF_SIZE];
char transport_name[ISCSI_TRANSPORT_NAME_MAXLEN];
/*
* This is only used for boot now, but the iser guys
* can use this for their virtualization idea.
*/
char alias[TARGET_NAME_MAXLEN + 1];
char iname[TARGET_NAME_MAXLEN + 1];
} iface_rec_t;
typedef struct node_rec {
struct list_head list;
char name[TARGET_NAME_MAXLEN];
int tpgt;
iscsi_startup_e startup;
session_rec_t session;
conn_rec_t conn[ISCSI_CONN_MAX];
iface_rec_t iface;
discovery_type_e disc_type;
char disc_address[NI_MAXHOST];
int disc_port;
} node_rec_t;
typedef struct discovery_rec {
iscsi_startup_e startup;
discovery_type_e type;
char address[NI_MAXHOST];
int port;
union {
struct iscsi_sendtargets_config sendtargets;
struct iscsi_slp_config slp;
} u;
} discovery_rec_t;
#endif /* CONFIG_H */
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