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Annotation of Net2/netiso/tp_trace.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1991 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)tp_trace.c  7.4 (Berkeley) 5/6/91
        !            34:  */
        !            35: 
        !            36: /***********************************************************
        !            37:                Copyright IBM Corporation 1987
        !            38: 
        !            39:                       All Rights Reserved
        !            40: 
        !            41: Permission to use, copy, modify, and distribute this software and its 
        !            42: documentation for any purpose and without fee is hereby granted, 
        !            43: provided that the above copyright notice appear in all copies and that
        !            44: both that copyright notice and this permission notice appear in 
        !            45: supporting documentation, and that the name of IBM not be
        !            46: used in advertising or publicity pertaining to distribution of the
        !            47: software without specific, written prior permission.  
        !            48: 
        !            49: IBM DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
        !            50: ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
        !            51: IBM BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
        !            52: ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
        !            53: WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
        !            54: ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
        !            55: SOFTWARE.
        !            56: 
        !            57: ******************************************************************/
        !            58: 
        !            59: /*
        !            60:  * ARGO Project, Computer Sciences Dept., University of Wisconsin - Madison
        !            61:  */
        !            62: /* 
        !            63:  * ARGO TP
        !            64:  *
        !            65:  * $Header: tp_trace.c,v 5.3 88/11/18 17:29:14 nhall Exp $
        !            66:  * $Source: /usr/argo/sys/netiso/RCS/tp_trace.c,v $
        !            67:  *
        !            68:  * The whole protocol trace module.
        !            69:  * We keep a circular buffer of trace structures, which are big
        !            70:  * unions of different structures we might want to see.
        !            71:  * Unfortunately this gets too big pretty easily. Pcbs were removed
        !            72:  * from the tracing when the kernel got too big to boot.
        !            73:  */
        !            74: 
        !            75: #define TP_TRACEFILE
        !            76: 
        !            77: #include "param.h"
        !            78: #include "systm.h"
        !            79: #include "mbuf.h"
        !            80: #include "socket.h"
        !            81: #include "types.h"
        !            82: #include "time.h"
        !            83: 
        !            84: #include "tp_param.h"
        !            85: #include "tp_timer.h"
        !            86: #include "tp_stat.h"
        !            87: #include "tp_param.h"
        !            88: #include "tp_ip.h"
        !            89: #include "tp_pcb.h"
        !            90: #include "tp_tpdu.h"
        !            91: #include "argo_debug.h"
        !            92: #include "tp_trace.h"
        !            93: 
        !            94: #ifdef TPPT
        !            95: static tp_seq = 0;
        !            96: u_char tp_traceflags[128];
        !            97: 
        !            98: /*
        !            99:  * The argument tpcb is the obvious.
        !           100:  * event here is just the type of trace event - TPPTmisc, etc.
        !           101:  * The rest of the arguments have different uses depending
        !           102:  * on the type of trace event.
        !           103:  */
        !           104: /*ARGSUSED*/
        !           105: /*VARARGS*/
        !           106: 
        !           107: void
        !           108: tpTrace(tpcb, event, arg, src, len, arg4, arg5)
        !           109:        struct tp_pcb   *tpcb;
        !           110:        u_int                   event, arg;
        !           111:        u_int                   src;
        !           112:        u_int                   len; 
        !           113:        u_int                   arg4;
        !           114:        u_int                   arg5;
        !           115: {
        !           116:        register struct tp_Trace *tp;
        !           117: 
        !           118:        tp = &tp_Trace[tp_Tracen++];
        !           119:        tp_Tracen %= TPTRACEN;
        !           120: 
        !           121:        tp->tpt_event = event;
        !           122:        tp->tpt_tseq = tp_seq++;
        !           123:        tp->tpt_arg = arg;
        !           124:        if(tpcb)
        !           125:                tp->tpt_arg2 = tpcb->tp_lref;
        !           126:        bcopy( (caddr_t)&time, (caddr_t)&tp->tpt_time, sizeof(struct timeval) );
        !           127: 
        !           128:        switch(event) {
        !           129: 
        !           130:        case TPPTertpdu:
        !           131:                bcopy((caddr_t)src, (caddr_t)&tp->tpt_ertpdu,
        !           132:                        (unsigned)MIN((int)len, sizeof(struct tp_Trace)));
        !           133:                break;
        !           134: 
        !           135:        case TPPTusrreq:
        !           136:        case TPPTmisc:
        !           137: 
        !           138:                /* arg is a string */
        !           139:                bcopy((caddr_t)arg, (caddr_t)tp->tpt_str, 
        !           140:                        (unsigned)MIN(1+strlen((caddr_t) arg), TPTRACE_STRLEN));
        !           141:                tp->tpt_m2 = src; 
        !           142:                tp->tpt_m3 = len;
        !           143:                tp->tpt_m4 = arg4;
        !           144:                tp->tpt_m1 = arg5;
        !           145:                break;
        !           146: 
        !           147:        case TPPTgotXack: 
        !           148:        case TPPTXack: 
        !           149:        case TPPTsendack: 
        !           150:        case TPPTgotack: 
        !           151:        case TPPTack: 
        !           152:        case TPPTindicate: 
        !           153:        default:
        !           154:        case TPPTdriver: 
        !           155:                tp->tpt_m2 = arg; 
        !           156:                tp->tpt_m3 = src;
        !           157:                tp->tpt_m4 = len;
        !           158:                tp->tpt_m5 = arg4;
        !           159:                tp->tpt_m1 = arg5; 
        !           160:                break;
        !           161:        case TPPTparam:
        !           162:                bcopy((caddr_t)src, (caddr_t)&tp->tpt_param, sizeof(struct tp_param));
        !           163:                break;
        !           164:        case TPPTref:
        !           165:                bcopy((caddr_t)src, (caddr_t)&tp->tpt_ref, sizeof(struct tp_ref));
        !           166:                break;
        !           167: 
        !           168:        case TPPTtpduin:
        !           169:        case TPPTtpduout:
        !           170:                tp->tpt_arg2 = arg4;
        !           171:                bcopy((caddr_t)src, (caddr_t)&tp->tpt_tpdu,
        !           172:                      (unsigned)MIN((int)len, sizeof(struct tp_Trace)));
        !           173:                break;
        !           174:        }
        !           175: }
        !           176: #endif TPPT

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