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HAM Radio 1
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src0131
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iface.h
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C/C++ Source or Header
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1990-11-10
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4KB
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102 lines
#ifndef _IFACE_H
#define _IFACE_H
#ifndef _GLOBAL_H
#include "global.h"
#endif
#ifndef _MBUF_H
#include "mbuf.h"
#endif
#ifndef _PROC_H
#include "proc.h"
#endif
/* Interface control structure */
struct iface {
struct iface *next; /* Linked list pointer */
char *name; /* Ascii string with interface name */
int type; /* Link header type for phdr */
struct iftype *iftype; /* Pointer to appropriate iftype entry */
int32 addr; /* IP address */
int32 broadcast; /* Broadcast address */
int32 netmask; /* Network mask */
int (*ioctl) __ARGS((struct iface *,int,char **));
/* Function to handle device control */
int (*send) __ARGS((struct mbuf *,struct iface *,int32,int,int,int,int));
/* Routine to send an IP datagram */
int (*output) __ARGS((struct iface *,char *,char *,int16,struct mbuf *));
/* Routine to send link packet */
int (*raw) __ARGS((struct iface *,struct mbuf *));
/* Routine to call to send raw packet */
int (*stop) __ARGS((struct iface *));
/* Routine to call before detaching */
int16 mtu; /* Maximum transmission unit size */
int dev; /* Subdevice number to pass to send */
int xdev; /* Associated Slip or Nrs channel, if any */
int16 flags; /* Configuration flags */
#define DATAGRAM_MODE 0 /* Send datagrams in raw link frames */
#define CONNECT_MODE 1 /* Send datagrams in connected mode */
int16 trace; /* Trace flags */
#define IF_TRACE_OUT 0x01 /* Output packets */
#define IF_TRACE_IN 0x10 /* Packets to me except broadcast */
#define IF_TRACE_ASCII 0x100 /* Dump packets in ascii */
#define IF_TRACE_HEX 0x200 /* Dump packets in hex/ascii */
#define IF_TRACE_NOBC 0x1000 /* Suppress broadcasts */
#define IF_TRACE_RAW 0x2000 /* Raw dump, if supported */
char *trfile; /* Trace file name, if any */
FILE *trfp; /* Stream to trace to */
char *hwaddr; /* Device hardware address, if any */
struct iface *forw; /* Forwarding interface for output, if rx only */
int32 ipsndcnt; /* IP datagrams sent */
int32 rawsndcnt; /* Raw packets sent */
int32 iprecvcnt; /* IP datagrams received */
int32 rawrecvcnt; /* Raw packets received */
int32 lastsent; /* Clock time of last send */
int32 lastrecv; /* Clock time of last receive */
struct proc *rxproc; /* Receiver process, if any */
struct proc *txproc; /* Transmitter process, if any */
struct proc *supv; /* Supervisory process, if any */
};
#define NULLIF (struct iface *)0
extern struct iface *Ifaces; /* Head of interface list */
extern struct iface Loopback; /* Optional loopback interface */
/* Header put on front of each packet in input queue */
struct phdr {
struct iface *iface;
unsigned short type; /* Use pktdrvr "class" values */
};
extern char Noipaddr[];
extern struct mbuf *Hopper;
/* Interface encapsulation mode table entry. An array of these strctures
* are initialized in config.c with all of the information necessary
* to attach a device.
*/
struct iftype {
char *name; /* Name of encapsulation technique */
int (*send) __ARGS((struct mbuf *,struct iface *,int32,int,int,int,int));
/* Routine to send an IP datagram */
int (*output) __ARGS((struct iface *,char *,char *,int16,struct mbuf *));
/* Routine to send link packet */
char *(*format) __ARGS((char *,char *));
/* Function that formats addresses */
int (*scan) __ARGS((char *,char *));
/* Reverse of format */
int type; /* Type field for network process */
int hwalen; /* Length of hardware address, if any */
};
#define NULLIFT (struct iftype *)0
extern struct iftype Iftypes[];
/* In iface.c: */
struct iface *if_lookup __ARGS((char *name));
struct iface *ismyaddr __ARGS((int32 addr));
int if_detach __ARGS((struct iface *ifp));
int setencap __ARGS((struct iface *ifp,char *mode));
int dumppkt __ARGS((struct iface *ifp,struct mbuf *bp));
#endif /* _IFACE_H */