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Annotation of 42BSD/etc/routed/trace.h, revision 1.1.1.1

1.1       root        1: /*     trace.h 4.3     83/05/25        */
                      2: 
                      3: /*
                      4:  * Routing table management daemon.
                      5:  */
                      6: 
                      7: /*
                      8:  * Trace record format.
                      9:  */
                     10: struct iftrace {
                     11:        time_t  ift_stamp;              /* time stamp */
                     12:        struct  sockaddr ift_who;       /* from/to */
                     13:        char    *ift_packet;            /* pointer to packet */
                     14:        short   ift_size;               /* size of packet */
                     15:        short   ift_metric;             /* metric on associated metric */
                     16: };
                     17: 
                     18: /*
                     19:  * Per interface packet tracing buffers.  An incoming and
                     20:  * outgoing circular buffer of packets is maintained, per
                     21:  * interface, for debugging.  Buffers are dumped whenever
                     22:  * an interface is marked down.
                     23:  */
                     24: struct ifdebug {
                     25:        struct  iftrace *ifd_records;   /* array of trace records */
                     26:        struct  iftrace *ifd_front;     /* next empty trace record */
                     27:        struct  interface *ifd_if;      /* for locating stuff */
                     28: };
                     29: 
                     30: /*
                     31:  * Packet tracing stuff.
                     32:  */
                     33: int    tracepackets;           /* watch packets as they go by */
                     34: int    tracing;                /* on/off */
                     35: FILE   *ftrace;                /* output trace file */
                     36: 
                     37: #define        TRACE_ACTION(action, route) { \
                     38:          if (tracing) \
                     39:                traceaction(ftrace, "action", route); \
                     40:        }
                     41: #define        TRACE_INPUT(ifp, src, size) { \
                     42:          if (tracing) { \
                     43:                ifp = if_iflookup(src); \
                     44:                if (ifp) \
                     45:                        trace(&ifp->int_input, src, packet, size, \
                     46:                                ntohl(ifp->int_metric)); \
                     47:          } \
                     48:          if (tracepackets) \
                     49:                dumppacket(stdout, "from", src, packet, size); \
                     50:        }
                     51: #define        TRACE_OUTPUT(ifp, dst, size) { \
                     52:          if (tracing) \
                     53:                trace(&ifp->int_output, dst, packet, size, ifp->int_metric); \
                     54:          if (tracepackets) \
                     55:                dumppacket(stdout, "to", dst, packet, size); \
                     56:        }

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