XNSrouted/trace.h

/*
 * Copyright (c) 1983 The Regents of the University of California.
 * All rights reserved.
 *
 * This file includes significant work done at Cornell University by
 * Bill Nesheim.  That work included by permission.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *      @(#)trace.h     5.5 (Berkeley) 9/19/88
 */

/*
 * Xerox Routing Information Protocol.
 */

/*
 * Trace record format.
 */
struct  iftrace {
        time_t  ift_stamp;              /* time stamp */
        struct  sockaddr ift_who;       /* from/to */
        char    *ift_packet;            /* pointer to packet */
        short   ift_size;               /* size of packet */
        short   ift_metric;             /* metric  */
};

/*
 * Per interface packet tracing buffers.  An incoming and
 * outgoing circular buffer of packets is maintained, per
 * interface, for debugging.  Buffers are dumped whenever
 * an interface is marked down.
 */
struct  ifdebug {
        struct  iftrace *ifd_records;   /* array of trace records */
        struct  iftrace *ifd_front;     /* next empty trace record */
        int     ifd_count;              /* number of unprinted records */
        struct  interface *ifd_if;      /* for locating stuff */
};

/*
 * Packet tracing stuff.
 */
int     tracepackets;           /* watch packets as they go by */
int     tracing;                /* on/off */
FILE    *ftrace;                /* output trace file */

#define TRACE_ACTION(action, route) { \
          if (tracing) \
                traceaction(ftrace, "action", route); \
        }
#define TRACE_INPUT(ifp, src, size) { \
          if (tracing) { \
                ifp = if_iflookup(src); \
                if (ifp) \
                        trace(&ifp->int_input, src, &packet[sizeof(struct idp)], size, \
                                ntohl(ifp->int_metric)); \
          } \
          if (tracepackets && ftrace) \
                dumppacket(ftrace, "from", src, &packet[sizeof(struct idp)], size); \
        }
#define TRACE_OUTPUT(ifp, dst, size) { \
          if (tracing) { \
                ifp = if_iflookup(dst); \
                if (ifp) \
                    trace(&ifp->int_output, dst, &packet[sizeof(struct idp)], size, ifp->int_metric); \
          } \
          if (tracepackets && ftrace) \
                dumppacket(ftrace, "to", dst, &packet[sizeof(struct idp)], size); \
        }