BSD 4_3_Net_2 release

[unix-history] / usr / src / sys / netinet / tcp_debug.c

/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*      @(#)tcp_debug.c 7.6 (Berkeley) 6/28/90
*/

#ifdef TCPDEBUG
/* load symbolic names */
#define PRUREQUESTS
#define TCPSTATES
#define TCPTIMERS
#define TANAMES
#endif

#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "socket.h"
#include "socketvar.h"
#include "protosw.h"
#include "errno.h"

#include "../net/route.h"
#include "../net/if.h"

#include "in.h"
#include "in_systm.h"
#include "ip.h"
#include "in_pcb.h"
#include "ip_var.h"
#include "tcp.h"
#include "tcp_fsm.h"
#include "tcp_seq.h"
#include "tcp_timer.h"
#include "tcp_var.h"
#include "tcpip.h"
#include "tcp_debug.h"

#ifdef TCPDEBUG
int     tcpconsdebug = 0;
#endif
/*
* Tcp debug routines
*/
tcp_trace(act, ostate, tp, ti, req)
       short act, ostate;
       struct tcpcb *tp;
       struct tcpiphdr *ti;
       int req;
{
       tcp_seq seq, ack;
       int len, flags;
       struct tcp_debug *td = &tcp_debug[tcp_debx++];

       if (tcp_debx == TCP_NDEBUG)
               tcp_debx = 0;
       td->td_time = iptime();
       td->td_act = act;
       td->td_ostate = ostate;
       td->td_tcb = (caddr_t)tp;
       if (tp)
               td->td_cb = *tp;
       else
               bzero((caddr_t)&td->td_cb, sizeof (*tp));
       if (ti)
               td->td_ti = *ti;
       else
               bzero((caddr_t)&td->td_ti, sizeof (*ti));
       td->td_req = req;
#ifdef TCPDEBUG
       if (tcpconsdebug == 0)
               return;
       if (tp)
               printf("%x %s:", tp, tcpstates[ostate]);
       else
               printf("???????? ");
       printf("%s ", tanames[act]);
       switch (act) {

       case TA_INPUT:
       case TA_OUTPUT:
       case TA_DROP:
               if (ti == 0)
                       break;
               seq = ti->ti_seq;
               ack = ti->ti_ack;
               len = ti->ti_len;
               if (act == TA_OUTPUT) {
                       seq = ntohl(seq);
                       ack = ntohl(ack);
                       len = ntohs((u_short)len);
               }
               if (act == TA_OUTPUT)
                       len -= sizeof (struct tcphdr);
               if (len)
                       printf("[%x..%x)", seq, seq+len);
               else
                       printf("%x", seq);
               printf("@%x, urp=%x", ack, ti->ti_urp);
               flags = ti->ti_flags;
               if (flags) {
#ifndef lint
                       char *cp = "<";
#define pf(f) { if (ti->ti_flags&TH_/**/f) { printf("%s%s", cp, "f"); cp = ","; } }
                       pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
#endif
                       printf(">");
               }
               break;

       case TA_USER:
               printf("%s", prurequests[req&0xff]);
               if ((req & 0xff) == PRU_SLOWTIMO)
                       printf("<%s>", tcptimers[req>>8]);
               break;
       }
       if (tp)
               printf(" -> %s", tcpstates[tp->t_state]);
       /* print out internal state of tp !?! */
       printf("\n");
       if (tp == 0)
               return;
       printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
           tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
           tp->snd_max);
       printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
           tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
#endif /* TCPDEBUG */
}