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freebsd-nq/usr.sbin/atm/scspd/scsp_var.h
Poul-Henning Kamp 1820df7a2d Add new files for HARP3 
Host ATM Research Platform (HARP), Network Computing Services, Inc.
This software was developed with the support of the Defense Advanced
Research Projects Agency (DARPA).
1998-09-15 08:23:17 +00:00

435 lines
12 KiB
C
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/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $Id: scsp_var.h,v 1.5 1998/08/13 20:11:17 johnc Exp $
*
*/
/*
* Server Cache Synchronization Protocol (SCSP) Support
* ----------------------------------------------------
*
* SCSP message formats
*
*/
#ifndef _SCSP_SCSP_VAR_H
#define _SCSP_SCSP_VAR_H
/*
* Protocol constants
*/
#define SCSP_Open_Interval 30
#define SCSP_HELLO_Interval 3
#define SCSP_HELLO_DF 3
#define SCSP_CAReXmitInterval 3
#define SCSP_CSUSReXmitInterval 3
#define SCSP_CSA_HOP_CNT 3
#define SCSP_CSUReXmitInterval 2
#define SCSP_CSUReXmitMax 5
/*
* Operational constants
*/
#define SCSPD_CONFIG "/etc/scspd.conf"
#define SCSPD_DIR "/tmp"
#define SCSPD_DUMP "/tmp/scspd.dump"
#define SCSP_HASHSZ 19
#define SCSPD_SOCK_NAME "SCSPD"
/*
* HELLO finite state machine states
*/
#define SCSP_HFSM_DOWN 0
#define SCSP_HFSM_WAITING 1
#define SCSP_HFSM_UNI_DIR 2
#define SCSP_HFSM_BI_DIR 3
#define SCSP_HFSM_STATE_CNT SCSP_HFSM_BI_DIR + 1
/*
* HELLO finite state machine events
*/
#define SCSP_HFSM_VC_ESTAB 0
#define SCSP_HFSM_VC_CLOSED 1
#define SCSP_HFSM_HELLO_T 2
#define SCSP_HFSM_RCV_T 3
#define SCSP_HFSM_RCVD 4
#define SCSP_HFSM_EVENT_CNT SCSP_HFSM_RCVD + 1
/*
* Cache Alignment finite state machine states
*/
#define SCSP_CAFSM_DOWN 0
#define SCSP_CAFSM_NEG 1
#define SCSP_CAFSM_MASTER 2
#define SCSP_CAFSM_SLAVE 3
#define SCSP_CAFSM_UPDATE 4
#define SCSP_CAFSM_ALIGNED 5
#define SCSP_CAFSM_STATE_CNT SCSP_CAFSM_ALIGNED + 1
/*
* Cache Alignment finite state machine events
*/
#define SCSP_CAFSM_HELLO_UP 0
#define SCSP_CAFSM_HELLO_DOWN 1
#define SCSP_CAFSM_CA_MSG 2
#define SCSP_CAFSM_CSUS_MSG 3
#define SCSP_CAFSM_CSU_REQ 4
#define SCSP_CAFSM_CSU_REPLY 5
#define SCSP_CAFSM_CA_T 6
#define SCSP_CAFSM_CSUS_T 7
#define SCSP_CAFSM_CSU_T 8
#define SCSP_CAFSM_CACHE_UPD 9
#define SCSP_CAFSM_CACHE_RSP 10
#define SCSP_CAFSM_EVENT_CNT SCSP_CAFSM_CACHE_RSP + 1
/*
* Client Interface finite state machine states
*/
#define SCSP_CIFSM_NULL 0
#define SCSP_CIFSM_SUM 1
#define SCSP_CIFSM_UPD 2
#define SCSP_CIFSM_ALIGN 3
#define SCSP_CIFSM_STATE_CNT SCSP_CIFSM_ALIGN + 1
/*
* Client Interface finite state machine events
*/
#define SCSP_CIFSM_CA_DOWN 0
#define SCSP_CIFSM_CA_SUMM 1
#define SCSP_CIFSM_CA_UPD 2
#define SCSP_CIFSM_CA_ALIGN 3
#define SCSP_CIFSM_SOL_RSP 4
#define SCSP_CIFSM_UPD_REQ 5
#define SCSP_CIFSM_UPD_RSP 6
#define SCSP_CIFSM_CSU_REQ 7
#define SCSP_CIFSM_CSU_REPLY 8
#define SCSP_CIFSM_CSU_SOL 9
#define SCSP_CIFSM_EVENT_CNT SCSP_CIFSM_CSU_SOL + 1
/*
* Server connection states (not part of any FSM)
*/
#define SCSP_SS_NULL 0
#define SCSP_SS_CFG 1
#define SCSP_SS_ACTIVE 2
/*
* Hash a cache key
*
* key pointer to an Scsp_ckey structure
*/
#define SCSP_HASH(key) scsp_hash((key))
/*
* Add a cache summary entry to a client's cache summary
*
* cpp pointer to a server control block
* key pointer to an Scsp_cse structure
*/
#define SCSP_ADD(cpp, key) \
{ \
Scsp_cse **c; \
c = &(cpp)->ss_cache[SCSP_HASH(&(key)->sc_key)]; \
LINK2TAIL((key), Scsp_cse, *c, sc_next); \
}
/*
* Delete a cache summary entry from a client's cache summary
*
* cpp pointer to a server control block
* s pointer to an Scsp_cse structure
*/
#define SCSP_DELETE(cpp, s) \
{ \
Scsp_cse **c; \
c = &(cpp)->ss_cache[SCSP_HASH(&(s)->sc_key)]; \
UNLINK((s), Scsp_cse, *c, sc_next); \
}
/*
* Search a client's cache summary for a given key
*
* cpp pointer to a server control block
* key pointer to an Scsp_ckey structure to find
* s Scsp_cse structure pointer to be set
*/
#define SCSP_LOOKUP(cpp, key, s) \
{ \
for ((s) = (cpp)->ss_cache[SCSP_HASH(key)]; \
(s); \
(s) = (s)->sc_next) { \
if (scsp_cmp_key((key), &(s)->sc_key) == 0) \
break; \
} \
}
/*
* SCSP pending connection control block
*
* The pending connection block is used to keep track of server
* connections which are open but haven't been identified yet.
*/
struct scsp_pending {
struct scsp_pending *sp_next;
int sp_sock;
};
typedef struct scsp_pending Scsp_pending;
/*
* SCSP Server instance control block
*/
struct scsp_server {
struct scsp_server *ss_next; /* Server chain */
char *ss_name; /* Server name */
char ss_intf[IFNAMSIZ]; /* Interface */
Atm_media ss_media; /* Physical comm medium */
char ss_state; /* Server connection state */
u_long ss_pid; /* Protocol ID */
int ss_id_len; /* ID length */
int ss_ckey_len; /* Cache key length */
u_long ss_sgid; /* Server group ID */
u_long ss_fid; /* Family ID */
int ss_sock; /* Socket to client */
int ss_dcs_lsock; /* DCS listen socket */
Scsp_id ss_lsid; /* Local Server ID */
Atm_addr ss_addr; /* Local ATM addr */
Atm_addr ss_subaddr; /* Local ATM subaddr */
int ss_mtu; /* Interface MTU */
int ss_mark;
struct scsp_dcs *ss_dcs; /* Ptr to list of DCSs */
struct scsp_cse *ss_cache[SCSP_HASHSZ]; /* Client's cache */
};
typedef struct scsp_server Scsp_server;
/*
* SCSP client cache summary entry control block
*/
struct scsp_cse {
struct scsp_cse *sc_next; /* Next on chain */
long sc_seq; /* CSA sequence no */
Scsp_ckey sc_key; /* Cache key */
Scsp_id sc_oid; /* Origin ID */
};
typedef struct scsp_cse Scsp_cse;
/*
* CSU Request retransmission control block
*/
struct scsp_csu_rexmt {
struct scsp_csu_rexmt *sr_next; /* Next rexmit block */
struct scsp_dcs *sr_dcs; /* DCS block */
Scsp_csa *sr_csa; /* CSAs for rexmit */
Harp_timer sr_t; /* Rexmit timer */
};
typedef struct scsp_csu_rexmt Scsp_csu_rexmt;
/*
* SCSP DCS control block
*/
struct scsp_dcs {
struct scsp_dcs *sd_next; /* DCS chain */
Scsp_server *sd_server; /* Local server */
Scsp_id sd_dcsid; /* DCS ID */
Atm_addr sd_addr; /* DCS ATM address */
Atm_addr sd_subaddr; /* DCS ATM subaddress */
int sd_sock; /* Socket to DCS */
Harp_timer sd_open_t; /* Open VCC retry timer */
int sd_hello_state; /* Hello FSM state */
int sd_hello_int; /* Hello interval */
int sd_hello_df; /* Hello dead factor */
int sd_hello_rcvd; /* Hello msg received */
Harp_timer sd_hello_h_t; /* Hello timer */
Harp_timer sd_hello_rcv_t; /* Hello receive timer */
int sd_ca_state; /* CA FSM state */
long sd_ca_seq; /* CA sequence number */
int sd_ca_rexmt_int; /* CA rexmit interval */
Scsp_msg *sd_ca_rexmt_msg; /* Saved CA msg */
Scsp_cse *sd_ca_csas; /* CSAS still to send */
Harp_timer sd_ca_rexmt_t; /* CA rexmit timer */
int sd_csus_rexmt_int; /* CSUS rexmit int */
Scsp_csa *sd_crl; /* Cache req list */
Scsp_msg *sd_csus_rexmt_msg; /* Saved CSUS msg */
Harp_timer sd_csus_rexmt_t; /* CSUS rexmit timer */
int sd_hops; /* CSA hop count */
Scsp_csa *sd_csu_ack_pend; /* CSUs to be ACKed */
Scsp_csa *sd_csu_ack; /* CSUs ACKed */
int sd_csu_rexmt_int; /* CSU Req rxmt time */
int sd_csu_rexmt_max; /* CSU Req rxmt limit */
Scsp_csu_rexmt *sd_csu_rexmt; /* CSU Req rxmt queue */
int sd_client_state; /* Client I/F state */
};
typedef struct scsp_dcs Scsp_dcs;
/*
* Trace options
*/
#define SCSP_TRACE_HFSM 1 /* Trace the Hello FSM */
#define SCSP_TRACE_CAFSM 2 /* Trace the CA FSM */
#define SCSP_TRACE_CFSM 4 /* Trace the server I/F FSM */
#define SCSP_TRACE_HELLO_MSG 8 /* Trace Hello protocol msgs */
#define SCSP_TRACE_CA_MSG 16 /* Trace CA protocol msgs */
#define SCSP_TRACE_IF_MSG 32 /* Trace server I/F msgs */
/*
* Global variables
*/
extern char *prog;
extern FILE *cfg_file;
extern int parse_line;
extern char *scsp_config_file;
extern FILE *scsp_log_file;
extern int scsp_log_syslog;
extern Scsp_server *scsp_server_head;
extern Scsp_pending *scsp_pending_head;
extern int scsp_max_socket;
extern int scsp_debug_mode;
extern int scsp_trace_mode;
extern FILE *scsp_trace_file;
/*
* Executable functions
*/
/* scsp_cafsm.c */
extern int scsp_cafsm __P((Scsp_dcs *, int, void *));
/* scsp_config.c */
extern int scsp_config __P((char *));
/* scsp_hfsm.c */
extern int scsp_hfsm __P((Scsp_dcs *, int, Scsp_msg *));
/* scsp_if.c */
extern int scsp_cfsm __P((Scsp_dcs *, int, Scsp_msg *,
Scsp_if_msg *));
/* scsp_input.c */
extern void scsp_free_msg __P((Scsp_msg *));
extern Scsp_msg *scsp_parse_msg __P((char *, int));
/* scsp_log.c */
#if __STDC__
extern void scsp_log __P((const int, const char *, ...));
extern void scsp_trace __P((const char *, ...));
#else
extern void scsp_log __P((int, char *, va_alist));
extern void scsp_trace __P((const char *, va_alist));
#endif
extern void scsp_open_trace __P(());
extern void scsp_trace_msg __P((Scsp_dcs *, Scsp_msg *, int));
extern void scsp_mem_err __P((char *));
/* scsp_msg.c */
extern void scsp_csus_ack __P((Scsp_dcs *, Scsp_msg *));
extern int scsp_send_ca __P((Scsp_dcs *));
extern int scsp_send_csus __P((Scsp_dcs *));
extern int scsp_send_csu_req __P((Scsp_dcs *, Scsp_csa *));
extern int scsp_send_csu_reply __P((Scsp_dcs *, Scsp_csa *));
extern int scsp_send_hello __P((Scsp_dcs *));
/* scsp_output.c */
extern int scsp_format_msg __P((Scsp_dcs *, Scsp_msg *, char **));
extern int scsp_send_msg __P((Scsp_dcs *, Scsp_msg *));
/* scsp_print.c */
extern char *format_hfsm_state __P((int));
extern char *format_hfsm_event __P((int));
extern char *format_cafsm_state __P((int));
extern char *format_cafsm_event __P((int));
extern char *format_cifsm_state __P((int));
extern char *format_cifsm_event __P((int));
extern void print_scsp_cse __P((FILE *, Scsp_cse *));
extern void print_scsp_msg __P((FILE *, Scsp_msg *));
extern void print_scsp_if_msg __P((FILE *, Scsp_if_msg *));
extern void print_scsp_pending __P((FILE *, Scsp_pending *));
extern void print_scsp_server __P((FILE *, Scsp_server *));
extern void print_scsp_dcs __P((FILE *, Scsp_dcs *));
extern void print_scsp_dump __P(());
/* scsp_socket.c */
extern Scsp_dcs * scsp_find_dcs __P((int));
extern Scsp_server * scsp_find_server __P((int));
extern int scsp_dcs_connect __P((Scsp_dcs *));
extern int scsp_dcs_listen __P((Scsp_server *));
extern Scsp_dcs * scsp_dcs_accept __P((Scsp_server *));
extern int scsp_dcs_read __P((Scsp_dcs *));
extern int scsp_server_listen __P(());
extern int scsp_server_accept __P((int));
extern Scsp_if_msg * scsp_if_sock_read __P((int));
extern int scsp_server_read __P((Scsp_server *));
extern int scsp_pending_read __P((Scsp_pending *));
/* scsp_subr.c */
extern int scsp_hash __P((Scsp_ckey *));
extern int scsp_cmp_id __P((Scsp_id *, Scsp_id *));
extern int scsp_cmp_key __P((Scsp_ckey *, Scsp_ckey *));
extern int scsp_is_atmarp_server __P((char *));
extern Scsp_cse * scsp_dup_cse __P((Scsp_cse *));
extern Scsp_csa * scsp_dup_csa __P((Scsp_csa *));
extern Scsp_csa * scsp_cse2csas __P((Scsp_cse *));
extern void scsp_dcs_cleanup __P((Scsp_dcs *));
extern void scsp_dcs_delete __P((Scsp_dcs *));
extern void scsp_server_shutdown __P((Scsp_server *));
extern void scsp_server_delete __P((Scsp_server *));
extern int scsp_get_server_info __P((Scsp_server *));
extern void scsp_process_ca __P((Scsp_dcs *, Scsp_ca *));
extern int scsp_propagate_csa __P(( Scsp_dcs *,
Scsp_csa *));
extern void scsp_update_cache __P(( Scsp_dcs *,
Scsp_csa *));
extern void scsp_reconfigure __P(());
/* scsp_timer.c */
extern void scsp_open_timeout __P((Harp_timer *));
extern void scsp_hello_timeout __P((Harp_timer *));
extern void scsp_hello_rcv_timeout __P((Harp_timer *));
extern void scsp_ca_retran_timeout __P((Harp_timer *));
extern void scsp_csus_retran_timeout __P((Harp_timer *));
extern void scsp_csu_req_retran_timeout __P((Harp_timer *));
#endif /* _SCSP_SCSP_VAR_H */
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