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scst/iscsi-scst/usr/iscsid.h
Vladislav Bolkhovitin e252aadf35 - Fixed problems in reading iscsi-scst.conf 
- Cleanups



git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@698 d57e44dd-8a1f-0410-8b47-8ef2f437770f
2009-03-17 18:00:26 +00:00

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/*
* Copyright (C) 2002 - 2003 Ardis Technolgies <roman@ardistech.com>
* Copyright (C) 2007 - 2008 Vladislav Bolkhovitin
* Copyright (C) 2007 - 2008 CMS Distribution Limited
*
* 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, version 2
* of the License.
*
* 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 ISCSID_H
#define ISCSID_H
#include <search.h>
#include <sys/types.h>
#include <assert.h>
#include "types.h"
#include "iscsi_hdr.h"
#include "iscsi_scst.h"
#include "param.h"
#include "misc.h"
#define sBUG() assert(0)
#define sBUG_ON(p) assert(!(p))
struct buf_segment {
struct __qelem entry;
unsigned int len;
char data[0];
};
struct PDU {
struct iscsi_hdr bhs;
void *ahs;
unsigned int ahssize;
void *data;
unsigned int datasize;
};
#define KEY_STATE_START 0
#define KEY_STATE_REQUEST 1
#define KEY_STATE_DONE_ADDED 2
#define KEY_STATE_DONE 3
struct session {
struct __qelem slist;
char *initiator;
struct target *target;
union iscsi_sid sid;
struct __qelem conn_list;
};
struct connection {
int state;
int iostate;
int fd;
struct session *sess;
u32 tid;
struct iscsi_param session_param[session_key_last];
char *initiator;
char *user;
union iscsi_sid sid;
u16 cid;
int session_type;
int auth_method;
u32 stat_sn;
u32 exp_stat_sn;
u32 cmd_sn;
u32 exp_cmd_sn;
u32 ttt;
struct PDU req;
void *req_buffer;
struct PDU rsp;
struct __qelem rsp_buf_list;
unsigned char *buffer;
int rwsize;
int auth_state;
union {
struct {
int digest_alg;
int id;
int challenge_size;
unsigned char *challenge;
} chap;
} auth;
struct __qelem clist;
};
#define IOSTATE_FREE 0
#define IOSTATE_READ_BHS 1
#define IOSTATE_READ_AHS_DATA 2
#define IOSTATE_WRITE_BHS 3
#define IOSTATE_WRITE_AHS 4
#define IOSTATE_WRITE_DATA 5
#define STATE_FREE 0
#define STATE_SECURITY 1
#define STATE_SECURITY_AUTH 2
#define STATE_SECURITY_DONE 3
#define STATE_SECURITY_LOGIN 4
#define STATE_SECURITY_FULL 5
#define STATE_LOGIN 6
#define STATE_LOGIN_FULL 7
#define STATE_FULL 8
#define STATE_KERNEL 9
#define STATE_CLOSE 10
#define STATE_EXIT 11
#define AUTH_STATE_START 0
#define AUTH_STATE_CHALLENGE 1
/* don't touch these */
#define AUTH_DIR_INCOMING 0
#define AUTH_DIR_OUTGOING 1
#define SESSION_NORMAL 0
#define SESSION_DISCOVERY 1
#define AUTH_UNKNOWN -1
#define AUTH_NONE 0
#define AUTH_CHAP 1
#define DIGEST_UNKNOWN -1
#define BHS_SIZE 48
/*
* Must be 8192, since it used as MaxRecvDataSegmentLength during Login phase,
* because iSCSI RFC requires: "The default MaxRecvDataSegmentLength is used
* during Login".
*/
#define INCOMING_BUFSIZE 8192
struct target {
struct __qelem tlist;
struct __qelem sessions_list;
u32 tid;
char name[ISCSI_NAME_LEN];
char *alias;
struct __qelem isns_head;
};
extern int ctrl_fd;
extern int conn_blocked;
/* chap.c */
extern int cmnd_exec_auth_chap(struct connection *conn);
/* conn.c */
extern struct connection *conn_alloc(void);
extern void conn_free(struct connection *conn);
extern void conn_pass_to_kern(struct connection *conn, int fd);
extern void conn_read_pdu(struct connection *conn);
extern void conn_write_pdu(struct connection *conn);
extern void conn_free_pdu(struct connection *conn);
extern void conn_free_rsp_buf_list(struct connection *conn);
/* iscsi_scstd.c */
extern uint16_t server_port;
extern void isns_set_fd(int isns, int scn_listen, int scn);
extern void wait_4_iscsi_event(int timeout);
/* iscsid.c */
extern int iscsi_debug;
extern int cmnd_execute(struct connection *conn);
extern void cmnd_finish(struct connection *conn);
extern char *text_key_find(struct connection *conn, char *searchKey);
extern void text_key_add(struct connection *conn, char *key, char *value);
/* log.c */
extern int log_daemon;
extern int log_level;
extern void log_init(void);
extern void __log_info(const char *func, int line, const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
extern void __log_warning(const char *func, int line, const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
extern void __log_error(const char *func, int line, const char *fmt, ...)
__attribute__ ((format (printf, 3, 4)));
extern void __log_debug(const char *func, int line, int level, const char *fmt, ...)
__attribute__ ((format (printf, 4, 5)));
extern void __log_pdu(const char *func, int line, int level, struct PDU *pdu);
#define log_info(args...) __log_info(__func__, __LINE__, ## args)
#define log_warning(args...) __log_warning(__func__, __LINE__, ## args)
#define log_error(args...) __log_error(__func__, __LINE__, ## args)
#define log_debug(args...) __log_debug(__func__, __LINE__, ## args)
#define log_pdu(args...) __log_pdu(__func__, __LINE__, ## args)
/* session.c */
extern struct session *session_find_name(u32 tid, const char *iname, union iscsi_sid sid);
extern struct session *session_find_id(u32 tid, u64 sid);
extern int session_create(struct connection *conn);
extern void session_free(struct session *session);
extern struct connection *conn_find(struct session *session, u16 cid);
/* target.c */
extern struct __qelem targets_list;
extern int target_add(u32 *, char *);
extern int target_del(u32);
extern u32 target_find_id_by_name(const char *name);
extern struct target *target_find_by_name(const char *name);
struct target *target_find_by_id(u32);
extern void target_list_build(struct connection *, char *, char *);
/* message.c */
extern int iscsi_adm_request_listen(void);
extern int iscsi_adm_request_handle(int accept_fd);
/* ctldev.c */
extern int kernel_open(int *max_data_seg_len);
extern int kernel_param_get(u32 tid, u64 sid, int type, struct iscsi_param *param);
extern int kernel_param_set(u32 tid, u64 sid, int type, u32 partial,
struct iscsi_param *param);
extern int kernel_target_create(u32 *tid, char *name);
extern int kernel_target_destroy(u32 tid);
extern int kernel_session_create(u32 tid, u64 sid, u32 exp_cmd_sn,
char *name, char *user);
extern int kernel_session_destroy(u32 tid, u64 sid);
extern int kernel_conn_create(u32 tid, u64 sid, u32 cid, u32 stat_sn, u32 exp_stat_sn,
int fd, u32 hdigest, u32 ddigest);
extern int kernel_conn_destroy(u32 tid, u64 sid, u32 cid);
/* event.c */
extern void handle_iscsi_events(int fd);
extern int nl_open(void);
/* param.c */
extern int param_index_by_name(char *name, struct iscsi_key *keys);
/* config.c */
extern int config_isns_load(char *params, char **isns, int *isns_ac);
extern int config_load(char *params);
extern int config_target_create(u32 *tid, char *name);
extern int config_target_destroy(u32 tid);
int config_account_add(u32 tid, int dir, char *name, char *pass);
extern int config_account_query(u32 tid, int dir, char *name, char *pass);
extern int config_account_list(u32 tid, int dir, u32 *cnt, u32 *overflow,
char *buf, size_t buf_sz);
extern int config_account_del(u32 tid, int dir, char *name);
extern int config_param_set(u32 tid, u64 sid, int type, u32 partial,
struct iscsi_param *param);
extern int config_initiator_access(u32 tid, int fd);
/* isns.c */
extern int isns_init(char *addr, int isns_ac);
extern int isns_handle(int is_timeout, int *timeout);
extern int isns_scn_handle(int accept);
extern int isns_scn_access(u32 tid, int fd, char *name);
extern int isns_target_register(char *name);
extern int isns_target_deregister(char *name);
extern void isns_exit(void);
#endif /* ISCSID_H */
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