usr/src/sys/netccitt/hd_debug.c

/*
 * Copyright (c) University of British Columbia, 1984
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Laboratory for Computation Vision and the Computer Science Department
 * of the University of British Columbia.
 *
 * 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.
 *
 *      @(#)hd_debug.c  7.5 (Berkeley) 5/29/91
 */

#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "domain.h"
#include "socket.h"
#include "protosw.h"
#include "errno.h"
#include "time.h"
#include "kernel.h"

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

#include "hdlc.h"
#include "hd_var.h"
#include "x25.h"

#ifdef HDLCDEBUG
#define NTRACE          32

struct  hdlctrace {
        struct  hdcb *ht_hdp;
        short   ht_dir;
        struct  mbuf *ht_frame;
        struct  timeval ht_time;
} hdtrace[NTRACE];

int     lasttracelogged, freezetrace;
#endif

hd_trace (hdp, direction, frame)
struct hdcb *hdp;
register struct Hdlc_frame *frame;
{
        register char *s;
        register int nr, pf, ns, i;
        struct Hdlc_iframe *iframe = (struct Hdlc_iframe *) frame;

#ifdef HDLCDEBUG
        hd_savetrace (hdp, direction, frame);
#endif
        if (hdp -> hd_xcp -> xc_ltrace) {
                if (direction == RX)
                        printf ("F-In:  ");
                else if (direction == 2)
                                printf ("F-Xmt: ");
                        else
                                printf ("F-Out:   ");

                nr = iframe -> nr;
                pf = iframe -> pf;
                ns = iframe -> ns;

                switch (hd_decode (hdp, frame)) {
                case SABM:
                        printf ("SABM   : PF=%d\n", pf);
                        break;

                case DISC:
                        printf ("DISC   : PF=%d\n", pf);
                        break;

                case DM:
                        printf ("DM     : PF=%d\n", pf);
                        break;

                case FRMR:
                        {
                        register struct Frmr_frame *f = (struct Frmr_frame *)frame;

                        printf ("FRMR   : PF=%d, TEXT=", pf);
                        for (s = (char *) frame, i = 0; i < 5; ++i, ++s)
                                printf ("%x ", (int) * s & 0xff);
                        printf ("\n");
                        printf ("control=%x v(s)=%d v(r)=%d w%d x%d y%d z%d\n",
                                f->frmr_control, f->frmr_ns, f->frmr_nr,
                                f->frmr_w, f->frmr_x, f->frmr_y, f->frmr_z);
                        break;
                        }

                case UA:
                        printf ("UA     : PF=%d\n", pf);
                        break;

                case RR:
                        printf ("RR     : N(R)=%d, PF=%d\n", nr, pf);
                        break;

                case RNR:
                        printf ("RNR    : N(R)=%d, PF=%d\n", nr, pf);
                        break;

                case REJ:
                        printf ("REJ    : N(R)=%d, PF=%d\n", nr, pf);
                        break;

                case IFRAME:
                        {
                        register struct mbuf *m;
                        register int len = 0;

                        for(m = dtom (frame); m; m = m -> m_next)
                                len += m -> m_len;
                        len -= HDHEADERLN;
                        printf ("IFRAME : N(R)=%d, PF=%d, N(S)=%d, DATA(%d)=",
                                nr, pf, ns, len);
                        for (s = (char *)iframe->i_field, i = 0; i < 3; ++i, ++s)
                                printf ("%x ", (int) *s & 0xff);
                        printf ("\n");
                        break;
                        }

                default:
                        printf ("ILLEGAL: ");
                        for (s = (char *) frame, i = 0; i < 5; ++i, ++s)
                                printf ("%x ", (int) *s & 0xff);
                        printf ("\n");
                }

        }
}

#ifdef HDLCDEBUG
static
hd_savetrace (hdp, dir, frame)
struct hdcb *hdp;
struct Hdlc_frame *frame;
{
        register struct hdlctrace *htp;
        register struct mbuf *m;

        if (freezetrace)
                return;
        htp = &hdtrace[lasttracelogged];
        lasttracelogged = (lasttracelogged + 1) % NTRACE;
        if (m = htp->ht_frame)
                m_freem (m);
        m = dtom (frame);
        htp->ht_frame = m_copy (m, 0, m->m_len);
        htp->ht_hdp = hdp;
        htp->ht_dir = dir;
        htp->ht_time = time;
}

hd_dumptrace (hdp)
struct hdcb *hdp;
{
        register int i, ltrace;
        register struct hdlctrace *htp;

        freezetrace = 1;
        hd_status (hdp);
        printf ("retransmit queue:");
        for (i = 0; i < 8; i++)
                printf (" %x", hdp -> hd_retxq[i]);
        printf ("\n");
        ltrace = hdp -> hd_xcp -> xc_ltrace;
        hdp -> hd_xcp -> xc_ltrace = 1;
        for (i = 0; i < NTRACE; i++) {
                htp = &hdtrace[(lasttracelogged + i) % NTRACE];
                if (htp->ht_hdp != hdp || htp->ht_frame == 0)
                        continue;
                printf ("%d/%d  ", htp->ht_time.tv_sec & 0xff,
                        htp->ht_time.tv_usec / 10000);
                hd_trace (htp->ht_hdp, htp->ht_dir,
                        mtod (htp->ht_frame, struct Hdlc_frame *));
                m_freem (htp->ht_frame);
                htp->ht_frame = 0;
        }
        hdp -> hd_xcp -> xc_ltrace = ltrace;
        freezetrace = 0;
}
#endif