The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netiso/tp_trace.c

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    1 /*      $NetBSD: tp_trace.c,v 1.10 2004/04/19 05:16:46 matt Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 1991, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)tp_trace.c  8.1 (Berkeley) 6/10/93
   32  */
   33 
   34 /***********************************************************
   35                 Copyright IBM Corporation 1987
   36 
   37                       All Rights Reserved
   38 
   39 Permission to use, copy, modify, and distribute this software and its
   40 documentation for any purpose and without fee is hereby granted,
   41 provided that the above copyright notice appear in all copies and that
   42 both that copyright notice and this permission notice appear in
   43 supporting documentation, and that the name of IBM not be
   44 used in advertising or publicity pertaining to distribution of the
   45 software without specific, written prior permission.
   46 
   47 IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
   48 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
   49 IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
   50 ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
   51 WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
   52 ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
   53 SOFTWARE.
   54 
   55 ******************************************************************/
   56 
   57 /*
   58  * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
   59  */
   60 /*
   61  * The whole protocol trace module. We keep a circular buffer of trace
   62  * structures, which are big unions of different structures we might want to
   63  * see. Unfortunately this gets too big pretty easily. Pcbs were removed from
   64  * the tracing when the kernel got too big to boot.
   65  */
   66 
   67 #include <sys/cdefs.h>
   68 __KERNEL_RCSID(0, "$NetBSD: tp_trace.c,v 1.10 2004/04/19 05:16:46 matt Exp $");
   69 
   70 #define TP_TRACEFILE
   71 
   72 #include <sys/param.h>
   73 #include <sys/systm.h>
   74 #include <sys/mbuf.h>
   75 #include <sys/socket.h>
   76 #include <sys/time.h>
   77 
   78 #include <netiso/tp_param.h>
   79 #include <netiso/tp_timer.h>
   80 #include <netiso/tp_stat.h>
   81 #include <netiso/tp_param.h>
   82 #include <netiso/tp_ip.h>
   83 #include <netiso/tp_pcb.h>
   84 #include <netiso/tp_tpdu.h>
   85 #include <netiso/argo_debug.h>
   86 #include <netiso/tp_trace.h>
   87 
   88 #ifdef TPPT
   89 static          tp_seq = 0;
   90 u_char          tp_traceflags[128];
   91 
   92 /*
   93  * The argument tpcb is the obvious.
   94  * event here is just the type of trace event - TPPTmisc, etc.
   95  * The rest of the arguments have different uses depending
   96  * on the type of trace event.
   97  */
   98 /* ARGSUSED */
   99 /* VARARGS */
  100 
  101 void
  102 tpTrace(struct tp_pcb  *tpcb, u_int event, u_int arg, u_int src, u_int len,
  103         u_int arg4, u_int arg5)
  104 {
  105         struct tp_Trace *tp;
  106 
  107         tp = &tp_Trace[tp_Tracen++];
  108         tp_Tracen %= TPTRACEN;
  109 
  110         tp->tpt_event = event;
  111         tp->tpt_tseq = tp_seq++;
  112         tp->tpt_arg = arg;
  113         if (tpcb)
  114                 tp->tpt_arg2 = tpcb->tp_lref;
  115         bcopy((caddr_t) & time, (caddr_t) & tp->tpt_time, sizeof(struct timeval));
  116 
  117         switch (event) {
  118 
  119         case TPPTertpdu:
  120                 bcopy((caddr_t) src, (caddr_t) & tp->tpt_ertpdu,
  121                       (unsigned) MIN((int) len, sizeof(struct tp_Trace)));
  122                 break;
  123 
  124         case TPPTusrreq:
  125         case TPPTmisc:
  126 
  127                 /* arg is a string */
  128                 bcopy((caddr_t) arg, (caddr_t) tp->tpt_str,
  129                  (unsigned) MIN(1 + strlen((caddr_t) arg), TPTRACE_STRLEN));
  130                 tp->tpt_m2 = src;
  131                 tp->tpt_m3 = len;
  132                 tp->tpt_m4 = arg4;
  133                 tp->tpt_m1 = arg5;
  134                 break;
  135 
  136         case TPPTgotXack:
  137         case TPPTXack:
  138         case TPPTsendack:
  139         case TPPTgotack:
  140         case TPPTack:
  141         case TPPTindicate:
  142         default:
  143         case TPPTdriver:
  144                 tp->tpt_m2 = arg;
  145                 tp->tpt_m3 = src;
  146                 tp->tpt_m4 = len;
  147                 tp->tpt_m5 = arg4;
  148                 tp->tpt_m1 = arg5;
  149                 break;
  150         case TPPTparam:
  151                 bcopy((caddr_t) src, (caddr_t) & tp->tpt_param, sizeof(struct tp_param));
  152                 break;
  153         case TPPTref:
  154                 bcopy((caddr_t) src, (caddr_t) & tp->tpt_ref, sizeof(struct tp_ref));
  155                 break;
  156 
  157         case TPPTtpduin:
  158         case TPPTtpduout:
  159                 tp->tpt_arg2 = arg4;
  160                 bcopy((caddr_t) src, (caddr_t) & tp->tpt_tpdu,
  161                       (unsigned) MIN((int) len, sizeof(struct tp_Trace)));
  162                 break;
  163         }
  164 }
  165 #endif                          /* TPPT */

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