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/*
* iSCSI Initiator
*
* Copyright (C) 2004 Dmitry Yusupov, Alex Aizman
* 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 INITIATOR_H
#define INITIATOR_H
#include <stdint.h>
#include "iscsi_proto.h"
#include "auth.h"
/* daemon's session structure */
struct iscsi_session {
int socket_fd;
int login_timeout;
int auth_timeout;
int active_timeout;
int idle_timeout;
int ping_timeout;
int vendor_specific_keys;
unsigned int irrelevant_keys_bitmap;
int send_async_text;
uint32_t itt;
uint32_t cmdsn;
uint32_t exp_cmdsn;
uint32_t max_cmdsn;
uint32_t exp_statsn;
int immediate_data;
int initial_r2t;
int max_recv_data_segment_len; /* the value we declare */
int max_xmit_data_segment_len; /* the value declared by the target */
int first_burst_len;
int max_burst_len;
int data_pdu_in_order;
int data_seq_in_order;
int def_time2wait;
int def_time2retain;
int header_digest;
int data_digest;
int type;
int current_stage;
int next_stage;
int partial_response;
int portal_group_tag;
uint8_t isid[6];
uint16_t tsih;
int channel;
int target_id;
char target_name[TARGET_NAME_MAXLEN + 1];
char *target_alias;
char *initiator_name;
char *initiator_alias;
int ip_length;
uint8_t ip_address[16];
int port;
int tcp_window_size;
struct auth_str_block auth_recv_string_block;
struct auth_str_block auth_send_string_block;
struct auth_large_binary auth_recv_binary_block;
struct auth_large_binary auth_send_binary_block;
struct iscsi_acl auth_client_block;
struct iscsi_acl *auth_client;
int num_auth_buffers;
struct auth_buffer_desc auth_buffers[5];
int bidirectional_auth;
char username[AUTH_STR_MAX_LEN];
uint8_t password[AUTH_STR_MAX_LEN];
int password_length;
char username_in[AUTH_STR_MAX_LEN];
uint8_t password_in[AUTH_STR_MAX_LEN];
int password_length_in;
};
extern int iscsi_update_address(struct iscsi_session *session, char *address);
/* login.c */
#define ISCSI_SESSION_TYPE_NORMAL 0
#define ISCSI_SESSION_TYPE_DISCOVERY 1
/* not defined by iSCSI, but used in the login code to determine
* when to send the initial Login PDU
*/
#define ISCSI_INITIAL_LOGIN_STAGE -1
#define ISCSI_TEXT_SEPARATOR '='
enum iscsi_login_status {
LOGIN_OK = 0, /* library worked, but caller must check
* the status class and detail
*/
LOGIN_IO_ERROR, /* PDU I/O failed, connection have been
* closed or reset
*/
LOGIN_FAILED, /* misc. failure */
LOGIN_VERSION_MISMATCH, /* incompatible iSCSI protocol version */
LOGIN_NEGOTIATION_FAILED, /* didn't like a key value
* (or received an unknown key)
*/
LOGIN_AUTHENTICATION_FAILED, /* auth code indicated failure */
LOGIN_WRONG_PORTAL_GROUP, /* portal group tag didn't match
* the one required
*/
LOGIN_REDIRECTION_FAILED, /* couldn't handle the redirection
* requested by the target
*/
LOGIN_INVALID_PDU, /* received an incorrect opcode,
* or bogus fields in a PDU
*/
};
/* implemented in iscsi-login.c for use on all platforms */
extern int iscsi_add_text(struct iscsi_session *session, struct iscsi_hdr *pdu,
char *data, int max_data_length, char *param,
char *value);
extern enum iscsi_login_status iscsi_login(struct iscsi_session *session,
char *buffer, uint32_t bufsize,
uint8_t * status_class,
uint8_t * status_detail);
/* Digest types */
#define ISCSI_DIGEST_NONE 0
#define ISCSI_DIGEST_CRC32C 1
#define ISCSI_DIGEST_CRC32C_NONE 2 /* offer both, prefer CRC32C */
#define ISCSI_DIGEST_NONE_CRC32C 3 /* offer both, prefer None */
#define IRRELEVANT_MAXCONNECTIONS 0x01
#define IRRELEVANT_INITIALR2T 0x02
#define IRRELEVANT_IMMEDIATEDATA 0x04
#define IRRELEVANT_MAXBURSTLENGTH 0x08
#define IRRELEVANT_FIRSTBURSTLENGTH 0x10
#define IRRELEVANT_MAXOUTSTANDINGR2T 0x20
#define IRRELEVANT_DATAPDUINORDER 0x40
#define IRRELEVANT_DATASEQUENCEINORDER 0x80
#endif /* INITIATOR_H */
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