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Annotation of 43BSDReno/sbin/routed/trace.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983, 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  *
        !            19:  *     @(#)trace.h     5.8 (Berkeley) 6/1/90
        !            20:  */
        !            21: 
        !            22: /*
        !            23:  * Routing table management daemon.
        !            24:  */
        !            25: 
        !            26: /*
        !            27:  * Trace record format.
        !            28:  */
        !            29: struct iftrace {
        !            30:        struct  timeval ift_stamp;      /* time stamp */
        !            31:        struct  sockaddr ift_who;       /* from/to */
        !            32:        char    *ift_packet;            /* pointer to packet */
        !            33:        short   ift_size;               /* size of packet */
        !            34:        short   ift_metric;             /* metric on associated metric */
        !            35: };
        !            36: 
        !            37: /*
        !            38:  * Per interface packet tracing buffers.  An incoming and
        !            39:  * outgoing circular buffer of packets is maintained, per
        !            40:  * interface, for debugging.  Buffers are dumped whenever
        !            41:  * an interface is marked down.
        !            42:  */
        !            43: struct ifdebug {
        !            44:        struct  iftrace *ifd_records;   /* array of trace records */
        !            45:        struct  iftrace *ifd_front;     /* next empty trace record */
        !            46:        int     ifd_count;              /* number of unprinted records */
        !            47:        struct  interface *ifd_if;      /* for locating stuff */
        !            48: };
        !            49: 
        !            50: /*
        !            51:  * Packet tracing stuff.
        !            52:  */
        !            53: int    tracepackets;           /* watch packets as they go by */
        !            54: int    tracecontents;          /* watch packet contents as they go by */
        !            55: int    traceactions;           /* on/off */
        !            56: int    tracehistory;           /* on/off */
        !            57: FILE   *ftrace;                /* output trace file */
        !            58: 
        !            59: #define        TRACE_ACTION(action, route) { \
        !            60:          if (traceactions) \
        !            61:                traceaction(ftrace, action, route); \
        !            62:        }
        !            63: #define        TRACE_NEWMETRIC(route, newmetric) { \
        !            64:          if (traceactions) \
        !            65:                tracenewmetric(ftrace, route, newmetric); \
        !            66:        }
        !            67: #define        TRACE_INPUT(ifp, src, pack, size) { \
        !            68:          if (tracehistory) { \
        !            69:                ifp = if_iflookup(src); \
        !            70:                if (ifp) \
        !            71:                        trace(&ifp->int_input, src, pack, size, \
        !            72:                                ntohl(ifp->int_metric)); \
        !            73:          } \
        !            74:          if (tracepackets) \
        !            75:                dumppacket(ftrace, "from", src, pack, size, &now); \
        !            76:        }
        !            77: #define        TRACE_OUTPUT(ifp, dst, size) { \
        !            78:          if (tracehistory && ifp) \
        !            79:                trace(&ifp->int_output, dst, packet, size, ifp->int_metric); \
        !            80:          if (tracepackets) \
        !            81:                dumppacket(ftrace, "to", dst, packet, size, &now); \
        !            82:        }

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