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Annotation of 43BSD/etc/XNSrouted/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     5.4 (Berkeley) 9/17/85";
        !             7:  *
        !             8:  * Includes material written at Cornell University by Bill Nesheim,
        !             9:  * by permission of the author.
        !            10:  */
        !            11: 
        !            12: /*
        !            13:  * Xerox Routing Information Protocol.
        !            14:  */
        !            15: 
        !            16: /*
        !            17:  * Trace record format.
        !            18:  */
        !            19: struct iftrace {
        !            20:        time_t  ift_stamp;              /* time stamp */
        !            21:        struct  sockaddr ift_who;       /* from/to */
        !            22:        char    *ift_packet;            /* pointer to packet */
        !            23:        short   ift_size;               /* size of packet */
        !            24:        short   ift_metric;             /* metric  */
        !            25: };
        !            26: 
        !            27: /*
        !            28:  * Per interface packet tracing buffers.  An incoming and
        !            29:  * outgoing circular buffer of packets is maintained, per
        !            30:  * interface, for debugging.  Buffers are dumped whenever
        !            31:  * an interface is marked down.
        !            32:  */
        !            33: struct ifdebug {
        !            34:        struct  iftrace *ifd_records;   /* array of trace records */
        !            35:        struct  iftrace *ifd_front;     /* next empty trace record */
        !            36:        int     ifd_count;              /* number of unprinted records */
        !            37:        struct  interface *ifd_if;      /* for locating stuff */
        !            38: };
        !            39: 
        !            40: /*
        !            41:  * Packet tracing stuff.
        !            42:  */
        !            43: int    tracepackets;           /* watch packets as they go by */
        !            44: int    tracing;                /* on/off */
        !            45: FILE   *ftrace;                /* output trace file */
        !            46: 
        !            47: #define        TRACE_ACTION(action, route) { \
        !            48:          if (tracing) \
        !            49:                traceaction(ftrace, "action", route); \
        !            50:        }
        !            51: #define        TRACE_INPUT(ifp, src, size) { \
        !            52:          if (tracing) { \
        !            53:                ifp = if_iflookup(src); \
        !            54:                if (ifp) \
        !            55:                        trace(&ifp->int_input, src, &packet[sizeof(struct idp)], size, \
        !            56:                                ntohl(ifp->int_metric)); \
        !            57:          } \
        !            58:          if (tracepackets && ftrace) \
        !            59:                dumppacket(ftrace, "from", src, &packet[sizeof(struct idp)], size); \
        !            60:        }
        !            61: #define        TRACE_OUTPUT(ifp, dst, size) { \
        !            62:          if (tracing) { \
        !            63:                ifp = if_iflookup(dst); \
        !            64:                if (ifp) \
        !            65:                    trace(&ifp->int_output, dst, &packet[sizeof(struct idp)], size, ifp->int_metric); \
        !            66:          } \
        !            67:          if (tracepackets && ftrace) \
        !            68:                dumppacket(ftrace, "to", dst, &packet[sizeof(struct idp)], size); \
        !            69:        }

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