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hamradioversion3.0examsandprograms1992.iso
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9q920411
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ax25.h
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C/C++ Source or Header
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1992-04-09
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9KB
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257 lines
#ifndef _AX25_H
#define _AX25_H
#ifndef _GLOBAL_H
#include "global.h"
#endif
#ifndef _MBUF_H
#include "mbuf.h"
#endif
#ifndef _IFACE_H
#include "iface.h"
#endif
#ifndef _SOCKADDR_H
#include "sockaddr.h"
#endif
/* AX.25 datagram (address) sub-layer definitions */
#define MAXDIGIS 7 /* Maximum number of digipeaters */
#define ALEN 6 /* Number of chars in callsign field */
#define AXALEN 7 /* Total AX.25 address length, including SSID */
#define AXBUF 10 /* Buffer size for maximum-length ascii call */
#ifndef _LAPB_H
#include "lapb.h"
#endif
/* Bits within SSID field of AX.25 address */
#define SSID 0x1e /* Sub station ID */
#define REPEATED 0x80 /* Has-been-repeated bit in repeater field */
#define E 0x01 /* Address extension bit */
#define C 0x80 /* Command/response designation */
/* Our AX.25 address */
extern char Mycall[AXALEN];
/* List of AX.25 multicast addresses, e.g., "QST -0" in shifted ASCII */
extern char Ax25multi[][AXALEN];
extern int Digipeat;
extern int Ax25mbox;
/* Number of chars in interface field. The involved definition takes possible
* alignment requirements into account, since ax25_addr is of an odd size.
*/
#define ILEN (sizeof(struct sockaddr) - sizeof(short) - AXALEN)
/* Socket address, AX.25 style */
struct sockaddr_ax {
short sax_family; /* 2 bytes */
char ax25_addr[AXALEN];
char iface[ILEN]; /* Interface name */
};
/* Internal representation of an AX.25 header */
struct ax25 {
char dest[AXALEN]; /* Destination address */
char source[AXALEN]; /* Source address */
char digis[MAXDIGIS][AXALEN]; /* Digi string */
int ndigis; /* Number of digipeaters */
int nextdigi; /* Index to next digi in chain */
int cmdrsp; /* Command/response */
};
/* C-bit stuff */
#define LAPB_UNKNOWN 0
#define LAPB_COMMAND 1
#define LAPB_RESPONSE 2
/* AX.25 routing table entry */
struct ax_route {
struct ax_route *next; /* Linked list pointer */
char target[AXALEN];
char digis[MAXDIGIS][AXALEN];
int ndigis;
char type;
#define AX_LOCAL 1 /* Set by local ax25 route command */
#define AX_AUTO 2 /* Set by incoming packet */
};
#define NULLAXR ((struct ax_route *)0)
extern struct ax_route *Ax_routes;
extern struct ax_route Ax_default;
/* AX.25 Level 3 Protocol IDs (PIDs) */
#define PID_X25 0x01 /* CCITT X.25 PLP */
#define PID_SEGMENT 0x08 /* Segmentation fragment */
#define PID_TEXNET 0xc3 /* TEXNET datagram protocol */
#define PID_LQ 0xc4 /* Link quality protocol */
#define PID_APPLETALK 0xca /* Appletalk */
#define PID_APPLEARP 0xcb /* Appletalk ARP */
#define PID_IP 0xcc /* ARPA Internet Protocol */
#define PID_ARP 0xcd /* ARPA Address Resolution Protocol */
#define PID_NETROM 0xcf /* NET/ROM */
#define PID_NO_L3 0xf0 /* No level 3 protocol */
#define SEG_FIRST 0x80 /* First segment of a sequence */
#define SEG_REM 0x7f /* Mask for # segments remaining */
#define AX_EOL "\r" /* AX.25 end-of-line convention */
/* Link quality report packet header, internal format */
struct lqhdr {
int16 version; /* Version number of protocol */
#define LINKVERS 1
int32 ip_addr; /* Sending station's IP address */
};
#define LQHDR 6
/* Link quality entry, internal format */
struct lqentry {
char addr[AXALEN]; /* Address of heard station */
int32 count; /* Count of packets heard from that station */
};
#define LQENTRY 11
/* Link quality database record format
* Currently used only by AX.25 interfaces
*/
struct lq {
struct lq *next;
char addr[AXALEN]; /* Hardware address of station heard */
struct iface *iface; /* Interface address was heard on */
int32 time; /* Time station was last heard */
int32 currxcnt; /* Current # of packets heard from this station */
#ifdef notdef /* Not yet implemented */
/* # of packets heard from this station as of his last update */
int32 lastrxcnt;
/* # packets reported as transmitted by station as of his last update */
int32 lasttxcnt;
int16 hisqual; /* Fraction (0-1000) of station's packets heard
* as of last update
*/
int16 myqual; /* Fraction (0-1000) of our packets heard by station
* as of last update
*/
#endif
};
#define NULLLQ (struct lq *)0
extern struct lq *Lq; /* Link quality record headers */
/* Structure used to keep track of monitored destination addresses */
struct ld {
struct ld *next; /* Linked list pointers */
char addr[AXALEN];/* Hardware address of destination overheard */
struct iface *iface; /* Interface address was heard on */
int32 time; /* Time station was last mentioned */
int32 currxcnt; /* Current # of packets destined to this station */
};
#define NULLLD (struct ld *)0
extern struct ld *Ld; /* Destination address record headers */
/* Linkage to network protocols atop ax25 */
struct axlink {
int pid;
void (*funct) __ARGS((struct iface *,struct ax25_cb *,char *, char *,
struct mbuf *,int));
};
extern struct axlink Axlink[];
/* Codes for the open_ax25 call */
#define AX_PASSIVE 0
#define AX_ACTIVE 1
#define AX_SERVER 2 /* Passive, clone on opening */
/* In ax25.c: */
struct ax_route *ax_add __ARGS((char *,int,char digis[][AXALEN],int));
int ax_drop __ARGS((char *));
struct ax_route *ax_lookup __ARGS((char *));
void ax_recv __ARGS((struct iface *,struct mbuf *));
int ax_send __ARGS((struct mbuf *bp,struct iface *iface,int32 gateway,int tos));
int ax_output __ARGS((struct iface *iface,char *dest,char *source,int16 pid,
struct mbuf *data));
int sendframe __ARGS((struct ax25_cb *axp,int cmdrsp,int ctl,struct mbuf *data));
void axnl3 __ARGS((struct iface *iface,struct ax25_cb *axp,char *src,
char *dest,struct mbuf *bp,int mcast));
/* In ax25cmd.c: */
void st_ax25 __ARGS((struct ax25_cb *axp));
/* In axhdr.c: */
struct mbuf *htonax25 __ARGS((struct ax25 *hdr,struct mbuf *data));
int ntohax25 __ARGS((struct ax25 *hdr,struct mbuf **bpp));
/* In axlink.c: */
void getlqentry __ARGS((struct lqentry *ep,struct mbuf **bpp));
void getlqhdr __ARGS((struct lqhdr *hp,struct mbuf **bpp));
void logsrc __ARGS((struct iface *iface,char *addr));
void logdest __ARGS((struct iface *iface,char *addr));
char *putlqentry __ARGS((char *cp,char *addr,int32 count));
char *putlqhdr __ARGS((char *cp,int16 version,int32 ip_addr));
struct lq *al_lookup __ARGS((struct iface *ifp,char *addr,int sort));
/* In ax25user.c: */
int ax25val __ARGS((struct ax25_cb *axp));
int disc_ax25 __ARGS((struct ax25_cb *axp));
int kick_ax25 __ARGS((struct ax25_cb *axp));
struct ax25_cb *open_ax25 __ARGS((struct iface *,char *,char *,
int,int16,
void (*) __ARGS((struct ax25_cb *,int)),
void (*) __ARGS((struct ax25_cb *,int)),
void (*) __ARGS((struct ax25_cb *,int,int)),
int user));
struct mbuf *recv_ax25 __ARGS((struct ax25_cb *axp,int16 cnt));
int reset_ax25 __ARGS((struct ax25_cb *axp));
int send_ax25 __ARGS((struct ax25_cb *axp,struct mbuf *bp,int pid));
/* In ax25subr.c: */
int addreq __ARGS((char *a,char *b));
struct ax25_cb *cr_ax25 __ARGS((char *addr));
void del_ax25 __ARGS((struct ax25_cb *axp));
struct ax25_cb *find_ax25 __ARGS((char *));
char *pax25 __ARGS((char *e,char *addr));
int setcall __ARGS((char *out,char *call));
/* In axsocket.c: */
int so_ax_sock __ARGS((struct usock *up,int protocol));
int so_ax_bind __ARGS((struct usock *up));
int so_ax_listen __ARGS((struct usock *up,int backlog));
int so_ax_conn __ARGS((struct usock *up));
int so_ax_recv __ARGS((struct usock *up,struct mbuf **bpp,char *from,
int *fromlen));
int so_ax_send __ARGS((struct usock *up,struct mbuf *bp,char *to));
int so_ax_qlen __ARGS((struct usock *up,int rtx));
int so_ax_kick __ARGS((struct usock *up));
int so_ax_shut __ARGS((struct usock *up,int how));
int so_ax_close __ARGS((struct usock *up));
int checkaxaddr __ARGS((char *name,int namelen));
int so_axui_sock __ARGS((struct usock *up,int protocol));
int so_axui_bind __ARGS((struct usock *up));
int so_axui_conn __ARGS((struct usock *up));
int so_axui_recv __ARGS((struct usock *up,struct mbuf **bpp,char *from,
int *fromlen));
int so_axui_send __ARGS((struct usock *up,struct mbuf *bp,char *to));
int so_axui_qlen __ARGS((struct usock *up,int rtx));
int so_axui_shut __ARGS((struct usock *up,int how));
int so_axui_close __ARGS((struct usock *up));
char *axpsocket __ARGS((struct sockaddr *p));
char *axstate __ARGS((struct usock *up));
int so_ax_stat __ARGS((struct usock *up));
void beac_input __ARGS((struct iface *iface,char *src,struct mbuf *bp));
void s_arcall __ARGS((struct ax25_cb *axp,int cnt));
void s_ascall __ARGS((struct ax25_cb *axp,int old,int new));
void s_atcall __ARGS((struct ax25_cb *axp,int cnt));
#endif /* _AX25_H */