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RIP.H
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C/C++ Source or Header
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1990-11-16
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3KB
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120 lines
#ifndef _RIP_H
#define _RIP_H
/* Routing Information Protocol (RIP)
*
* This code is derived from the 4.2 BSD version which was
* used as a spec since no formal specification is known to exist.
* See RFC 1009, Gateway Requirements, for more details. AGB 4-29-88
*
* The draft RIP RFC was used to develop most of this code. The above
* referred to the basics of the rip_recv() function of RIP.C. The RIP
* RFC has now been issued as RFC1058. AGB 7-23-88
*
* Substantially rewritten and integrated into NOS 9/1989 by KA9Q
*/
#ifndef _MBUF_H
#include "mbuf.h"
#endif
#ifndef _IFACE_H
#include "iface.h"
#endif
#ifndef _UDP_H
#include "udp.h"
#endif
#define RIP_INFINITY 16
#define RIP_TTL 240 /* Default time-to-live for an entry */
#define RIPVERSION 1
#define RIP_IPFAM 2
/* UDP Port for RIP */
#define RIP_PORT 520
/* RIP Packet Types */
#define RIPCMD_REQUEST 1 /* want info */
#define RIPCMD_RESPONSE 2 /* responding to request */
#define RIPCMD_MAX 3
#define HOPCNT_INFINITY 16 /* per Xerox NS */
#define MAXRIPROUTES 25 /* maximum # routes per RIP pkt */
struct rip_list {
struct rip_list *prev;
struct rip_list *next; /* doubly linked list */
/* address to scream at periodically:
* this address must have a direct network interface route and an
* ARP entry for the appropriate hardware broadcast address, if approp.
*/
int32 dest;
/* basic rate of RIP clocks on this net interface */
int32 interval;
struct timer rip_time; /* time to output next on this net. iface */
/* the interface to transmit on and receive from */
struct iface *iface;
/* described below with the mask defs */
char flags;
#define RIP_SPLIT 0x1
};
#define NULLRL (struct rip_list *)0
/* Host format of a single entry in a RIP response packet */
struct rip_route {
int16 addr_fam;
int32 target;
int32 metric;
};
#define RIPROUTE 20 /* Size of each routing entry */
#define RIPHEADER 4 /* Size of rip header before routes */
#define MAXRIPPACKET RIPHEADER + (MAXRIPROUTES*RIPROUTE)
/* RIP statistics counters */
struct rip_stat {
int32 output; /* Packets sent */
int32 rcvd; /* Packets received */
int32 request; /* Number of request packets received */
int32 response; /* Number of responses received */
int32 unknown; /* Number of unknown command pkts received */
int32 version; /* Number of version errors */
int32 addr_family; /* Number of address family errors */
int32 refusals; /* Number of packets dropped from a host
on the refuse list */
};
struct rip_refuse {
struct rip_refuse *prev;
struct rip_refuse *next;
int32 target;
};
#define NULLREF (struct rip_refuse *)0
/* RIP primitives */
int rip_init __ARGS((void));
void rt_timeout __ARGS((void *s));
void rip_trigger __ARGS((void));
int rip_add __ARGS((int32 dest,int32 interval,char flags));
int riprefadd __ARGS((int32 gateway));
int riprefdrop __ARGS((int32 gateway));
int ripreq __ARGS((int32 dest,int16 replyport));
int rip_drop __ARGS((int32 dest));
int nbits __ARGS((int32 target));
void pullentry __ARGS((struct rip_route *ep,struct mbuf **bpp));
/* RIP Definition */
extern int16 Rip_trace;
extern int Rip_merge;
extern struct rip_stat Rip_stat;
extern struct rip_list *Rip_list;
extern struct rip_refuse *Rip_refuse;
extern struct udp_cb *Rip_cb;
#endif /* _RIP_H */