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Annotation of 43BSD/etc/routed/trace.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)trace.h     5.2 (Berkeley) 4/20/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Routing table management daemon.
        !            11:  */
        !            12: 
        !            13: /*
        !            14:  * Trace record format.
        !            15:  */
        !            16: struct iftrace {
        !            17:        time_t  ift_stamp;              /* time stamp */
        !            18:        struct  sockaddr ift_who;       /* from/to */
        !            19:        char    *ift_packet;            /* pointer to packet */
        !            20:        short   ift_size;               /* size of packet */
        !            21:        short   ift_metric;             /* metric on associated metric */
        !            22: };
        !            23: 
        !            24: /*
        !            25:  * Per interface packet tracing buffers.  An incoming and
        !            26:  * outgoing circular buffer of packets is maintained, per
        !            27:  * interface, for debugging.  Buffers are dumped whenever
        !            28:  * an interface is marked down.
        !            29:  */
        !            30: struct ifdebug {
        !            31:        struct  iftrace *ifd_records;   /* array of trace records */
        !            32:        struct  iftrace *ifd_front;     /* next empty trace record */
        !            33:        int     ifd_count;              /* number of unprinted records */
        !            34:        struct  interface *ifd_if;      /* for locating stuff */
        !            35: };
        !            36: 
        !            37: /*
        !            38:  * Packet tracing stuff.
        !            39:  */
        !            40: int    tracepackets;           /* watch packets as they go by */
        !            41: int    tracing;                /* on/off */
        !            42: FILE   *ftrace;                /* output trace file */
        !            43: 
        !            44: #define        TRACE_ACTION(action, route) { \
        !            45:          if (tracing) \
        !            46:                traceaction(ftrace, "action", route); \
        !            47:        }
        !            48: #define        TRACE_INPUT(ifp, src, size) { \
        !            49:          if (tracing) { \
        !            50:                ifp = if_iflookup(src); \
        !            51:                if (ifp) \
        !            52:                        trace(&ifp->int_input, src, packet, size, \
        !            53:                                ntohl(ifp->int_metric)); \
        !            54:          } \
        !            55:          if (tracepackets) \
        !            56:                dumppacket(stdout, "from", src, packet, size); \
        !            57:        }
        !            58: #define        TRACE_OUTPUT(ifp, dst, size) { \
        !            59:          if (tracing && ifp) \
        !            60:                trace(&ifp->int_output, dst, packet, size, ifp->int_metric); \
        !            61:          if (tracepackets) \
        !            62:                dumppacket(stdout, "to", dst, packet, size); \
        !            63:        }

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