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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [netinet/] [tcp_debug.c] - Blame information for rev 310

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1 30 unneback
/*
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 * Copyright (c) 1982, 1986, 1993
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 *      The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *      This product includes software developed by the University of
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 *      California, Berkeley and its contributors.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 *      @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93
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 * $Id: tcp_debug.c,v 1.2 2001-09-27 12:01:56 chris Exp $
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 */
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#include "opt_tcpdebug.h"
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#ifdef TCPDEBUG
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/* load symbolic names */
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#define PRUREQUESTS
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#define TCPSTATES
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#define TCPTIMERS
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#define TANAMES
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#endif
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/protosw.h>
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#include <sys/errno.h>
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#include <net/route.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <netinet/ip_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcp_fsm.h>
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#include <netinet/tcp_seq.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <netinet/tcpip.h>
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#include <netinet/tcp_debug.h>
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#ifdef TCPDEBUG
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static int      tcpconsdebug = 0; /* set to 1 to enable prints */
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#endif
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static struct tcp_debug tcp_debug[TCP_NDEBUG];
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static int      tcp_debx;
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/*
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 * Tcp debug routines
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 */
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void
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tcp_trace(act, ostate, tp, ti, req)
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        short act, ostate;
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        struct tcpcb *tp;
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        struct tcpiphdr *ti;
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        int req;
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{
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#ifdef TCPDEBUG
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        tcp_seq seq, ack;
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        int len, flags;
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#endif
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        struct tcp_debug *td = &tcp_debug[tcp_debx++];
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        if (tcp_debx == TCP_NDEBUG)
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                tcp_debx = 0;
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        td->td_time = iptime();
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        td->td_act = act;
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        td->td_ostate = ostate;
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        td->td_tcb = (caddr_t)tp;
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        if (tp)
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                td->td_cb = *tp;
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        else
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                bzero((caddr_t)&td->td_cb, sizeof (*tp));
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        if (ti)
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                td->td_ti = *ti;
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        else
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                bzero((caddr_t)&td->td_ti, sizeof (*ti));
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        td->td_req = req;
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#ifdef TCPDEBUG
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        if (tcpconsdebug == 0)
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                return;
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        if (tp)
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                printf("%p %s:", tp, tcpstates[ostate]);
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        else
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                printf("???????? ");
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        printf("%s ", tanames[act]);
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        switch (act) {
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        case TA_INPUT:
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        case TA_OUTPUT:
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        case TA_DROP:
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                if (ti == 0)
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                        break;
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                seq = ti->ti_seq;
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                ack = ti->ti_ack;
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                len = ti->ti_len;
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                if (act == TA_OUTPUT) {
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                        seq = ntohl(seq);
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                        ack = ntohl(ack);
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                        len = ntohs((u_short)len);
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                }
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                if (act == TA_OUTPUT)
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                        len -= sizeof (struct tcphdr);
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                if (len)
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                        printf("[%x..%x)", seq, seq+len);
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                else
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                        printf("%x", seq);
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                printf("@%x, urp=%x", ack, ti->ti_urp);
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                flags = ti->ti_flags;
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                if (flags) {
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                        char *cp = "<";
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#define pf(f) {                                 \
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        if (ti->ti_flags & TH_##f) {            \
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                printf("%s%s", cp, #f);         \
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                cp = ",";                       \
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        }                                       \
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}
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                        pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
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                        printf(">");
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                }
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                break;
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        case TA_USER:
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                printf("%s", prurequests[req&0xff]);
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                if ((req & 0xff) == PRU_SLOWTIMO)
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                        printf("<%s>", tcptimers[req>>8]);
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                break;
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        }
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        if (tp)
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                printf(" -> %s", tcpstates[tp->t_state]);
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        /* print out internal state of tp !?! */
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        printf("\n");
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        if (tp == 0)
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                return;
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        printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
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            tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
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            tp->snd_max);
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        printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
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            tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
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#endif /* TCPDEBUG */
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}

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