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 1.15 2009/04/18 14:58:06 tsutsui 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 1.15 2009/04/18 14:58:06 tsutsui 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_ip.h>
   82 #include <netiso/tp_pcb.h>
   83 #include <netiso/tp_tpdu.h>
   84 #include <netiso/argo_debug.h>
   85 #include <netiso/tp_trace.h>
   86 
   87 #ifdef TPPT
   88 static          tp_seq = 0;
   89 u_char          tp_traceflags[128];
   90 
   91 /*
   92  * The argument tpcb is the obvious.
   93  * event here is just the type of trace event - TPPTmisc, etc.
   94  * The rest of the arguments have different uses depending
   95  * on the type of trace event.
   96  */
   97 /* ARGSUSED */
   98 /* VARARGS */
   99 
  100 void
  101 tpTrace(struct tp_pcb  *tpcb, u_int event, u_int arg, u_int src, u_int len,
  102         u_int arg4, u_int arg5)
  103 {
  104         struct tp_Trace *tp;
  105 
  106         tp = &tp_Trace[tp_Tracen++];
  107         tp_Tracen %= TPTRACEN;
  108 
  109         tp->tpt_event = event;
  110         tp->tpt_tseq = tp_seq++;
  111         tp->tpt_arg = arg;
  112         if (tpcb)
  113                 tp->tpt_arg2 = tpcb->tp_lref;
  114         memcpy((void *) & tp->tpt_time, (void *) & time, sizeof(struct timeval));
  115 
  116         switch (event) {
  117 
  118         case TPPTertpdu:
  119                 memcpy((void *) & tp->tpt_ertpdu, (void *) src,
  120                       (unsigned) MIN((int) len, sizeof(struct tp_Trace)));
  121                 break;
  122 
  123         case TPPTusrreq:
  124         case TPPTmisc:
  125 
  126                 /* arg is a string */
  127                 memcpy((void *) tp->tpt_str, (void *) arg,
  128                  (unsigned) MIN(1 + strlen((void *) arg), TPTRACE_STRLEN));
  129                 tp->tpt_m2 = src;
  130                 tp->tpt_m3 = len;
  131                 tp->tpt_m4 = arg4;
  132                 tp->tpt_m1 = arg5;
  133                 break;
  134 
  135         case TPPTgotXack:
  136         case TPPTXack:
  137         case TPPTsendack:
  138         case TPPTgotack:
  139         case TPPTack:
  140         case TPPTindicate:
  141         default:
  142         case TPPTdriver:
  143                 tp->tpt_m2 = arg;
  144                 tp->tpt_m3 = src;
  145                 tp->tpt_m4 = len;
  146                 tp->tpt_m5 = arg4;
  147                 tp->tpt_m1 = arg5;
  148                 break;
  149         case TPPTparam:
  150                 memcpy((void *) & tp->tpt_param, (void *) src, sizeof(struct tp_param));
  151                 break;
  152         case TPPTref:
  153                 memcpy((void *) & tp->tpt_ref, (void *) src, sizeof(struct tp_ref));
  154                 break;
  155 
  156         case TPPTtpduin:
  157         case TPPTtpduout:
  158                 tp->tpt_arg2 = arg4;
  159                 memcpy((void *) & tp->tpt_tpdu, (void *) src,
  160                       (unsigned) MIN((int) len, sizeof(struct tp_Trace)));
  161                 break;
  162         }
  163 }
  164 #endif                          /* TPPT */

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