1 /* 2 * Copyright (c) 1983 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This file includes significant work done at Cornell University by 6 * Bill Nesheim. That work included by permission. 7 * 8 * Redistribution and use in source and binary forms are permitted 9 * provided that the above copyright notice and this paragraph are 10 * duplicated in all such forms and that any documentation, 11 * advertising materials, and other materials related to such 12 * distribution and use acknowledge that the software was developed 13 * by the University of California, Berkeley. The name of the 14 * University may not be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 18 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 19 * 20 * @(#)trace.h 5.5 (Berkeley) 09/19/88 21 */ 22 23 /* 24 * Xerox Routing Information Protocol. 25 */ 26 27 /* 28 * Trace record format. 29 */ 30 struct iftrace { 31 time_t ift_stamp; /* time stamp */ 32 struct sockaddr ift_who; /* from/to */ 33 char *ift_packet; /* pointer to packet */ 34 short ift_size; /* size of packet */ 35 short ift_metric; /* metric */ 36 }; 37 38 /* 39 * Per interface packet tracing buffers. An incoming and 40 * outgoing circular buffer of packets is maintained, per 41 * interface, for debugging. Buffers are dumped whenever 42 * an interface is marked down. 43 */ 44 struct ifdebug { 45 struct iftrace *ifd_records; /* array of trace records */ 46 struct iftrace *ifd_front; /* next empty trace record */ 47 int ifd_count; /* number of unprinted records */ 48 struct interface *ifd_if; /* for locating stuff */ 49 }; 50 51 /* 52 * Packet tracing stuff. 53 */ 54 int tracepackets; /* watch packets as they go by */ 55 int tracing; /* on/off */ 56 FILE *ftrace; /* output trace file */ 57 58 #define TRACE_ACTION(action, route) { \ 59 if (tracing) \ 60 traceaction(ftrace, "action", route); \ 61 } 62 #define TRACE_INPUT(ifp, src, size) { \ 63 if (tracing) { \ 64 ifp = if_iflookup(src); \ 65 if (ifp) \ 66 trace(&ifp->int_input, src, &packet[sizeof(struct idp)], size, \ 67 ntohl(ifp->int_metric)); \ 68 } \ 69 if (tracepackets && ftrace) \ 70 dumppacket(ftrace, "from", src, &packet[sizeof(struct idp)], size); \ 71 } 72 #define TRACE_OUTPUT(ifp, dst, size) { \ 73 if (tracing) { \ 74 ifp = if_iflookup(dst); \ 75 if (ifp) \ 76 trace(&ifp->int_output, dst, &packet[sizeof(struct idp)], size, ifp->int_metric); \ 77 } \ 78 if (tracepackets && ftrace) \ 79 dumppacket(ftrace, "to", dst, &packet[sizeof(struct idp)], size); \ 80 } 81