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tcp_debug.c revision 1.1 
      1 /*
      2  * Copyright (c) 1982, 1986 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  *	@(#)tcp_debug.c	7.6 (Berkeley) 6/28/90
     34  */
     35 
     36 #ifdef TCPDEBUG
     37 /* load symbolic names */
     38 #define PRUREQUESTS
     39 #define TCPSTATES
     40 #define	TCPTIMERS
     41 #define	TANAMES
     42 #endif
     43 
     44 #include "param.h"
     45 #include "systm.h"
     46 #include "mbuf.h"
     47 #include "socket.h"
     48 #include "socketvar.h"
     49 #include "protosw.h"
     50 #include "errno.h"
     51 
     52 #include "../net/route.h"
     53 #include "../net/if.h"
     54 
     55 #include "in.h"
     56 #include "in_systm.h"
     57 #include "ip.h"
     58 #include "in_pcb.h"
     59 #include "ip_var.h"
     60 #include "tcp.h"
     61 #include "tcp_fsm.h"
     62 #include "tcp_seq.h"
     63 #include "tcp_timer.h"
     64 #include "tcp_var.h"
     65 #include "tcpip.h"
     66 #include "tcp_debug.h"
     67 
     68 #ifdef TCPDEBUG
     69 int	tcpconsdebug = 0;
     70 #endif
     71 /*
     72  * Tcp debug routines
     73  */
     74 tcp_trace(act, ostate, tp, ti, req)
     75 	short act, ostate;
     76 	struct tcpcb *tp;
     77 	struct tcpiphdr *ti;
     78 	int req;
     79 {
     80 	tcp_seq seq, ack;
     81 	int len, flags;
     82 	struct tcp_debug *td = &tcp_debug[tcp_debx++];
     83 
     84 	if (tcp_debx == TCP_NDEBUG)
     85 		tcp_debx = 0;
     86 	td->td_time = iptime();
     87 	td->td_act = act;
     88 	td->td_ostate = ostate;
     89 	td->td_tcb = (caddr_t)tp;
     90 	if (tp)
     91 		td->td_cb = *tp;
     92 	else
     93 		bzero((caddr_t)&td->td_cb, sizeof (*tp));
     94 	if (ti)
     95 		td->td_ti = *ti;
     96 	else
     97 		bzero((caddr_t)&td->td_ti, sizeof (*ti));
     98 	td->td_req = req;
     99 #ifdef TCPDEBUG
    100 	if (tcpconsdebug == 0)
    101 		return;
    102 	if (tp)
    103 		printf("%x %s:", tp, tcpstates[ostate]);
    104 	else
    105 		printf("???????? ");
    106 	printf("%s ", tanames[act]);
    107 	switch (act) {
    108 
    109 	case TA_INPUT:
    110 	case TA_OUTPUT:
    111 	case TA_DROP:
    112 		if (ti == 0)
    113 			break;
    114 		seq = ti->ti_seq;
    115 		ack = ti->ti_ack;
    116 		len = ti->ti_len;
    117 		if (act == TA_OUTPUT) {
    118 			seq = ntohl(seq);
    119 			ack = ntohl(ack);
    120 			len = ntohs((u_short)len);
    121 		}
    122 		if (act == TA_OUTPUT)
    123 			len -= sizeof (struct tcphdr);
    124 		if (len)
    125 			printf("[%x..%x)", seq, seq+len);
    126 		else
    127 			printf("%x", seq);
    128 		printf("@%x, urp=%x", ack, ti->ti_urp);
    129 		flags = ti->ti_flags;
    130 		if (flags) {
    131 #ifndef lint
    132 			char *cp = "<";
    133 #define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } }
    134 			pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
    135 #endif
    136 			printf(">");
    137 		}
    138 		break;
    139 
    140 	case TA_USER:
    141 		printf("%s", prurequests[req&0xff]);
    142 		if ((req & 0xff) == PRU_SLOWTIMO)
    143 			printf("<%s>", tcptimers[req>>8]);
    144 		break;
    145 	}
    146 	if (tp)
    147 		printf(" -> %s", tcpstates[tp->t_state]);
    148 	/* print out internal state of tp !?! */
    149 	printf("\n");
    150 	if (tp == 0)
    151 		return;
    152 	printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
    153 	    tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
    154 	    tp->snd_max);
    155 	printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
    156 	    tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
    157 #endif /* TCPDEBUG */
    158 }
    159