Annotation of 43BSD/etc/routed/trace.h, revision 1.1.1.1

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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