freebsd-dev/sys/netccitt/hd_debug.c

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/*
* Copyright (c) University of British Columbia, 1984
* Copyright (c) 1990, 1993
* 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 8.1 (Berkeley) 6/10/93
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* $Id: hd_debug.c,v 1.3 1995/02/15 06:29:42 jkh Exp $
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*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/domain.h>
#include <sys/socket.h>
#include <sys/protosw.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <net/if.h>
#include <netccitt/hdlc.h>
#include <netccitt/hd_var.h>
#include <netccitt/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
void
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hd_trace (hdp, direction, frame)
struct hdcb *hdp;
int direction;
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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)) {
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case SABM:
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printf ("SABM : PF=%d\n", pf);
break;
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case DISC:
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printf ("DISC : PF=%d\n", pf);
break;
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case DM:
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printf ("DM : PF=%d\n", pf);
break;
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case FRMR:
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{
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;
}
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case UA:
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printf ("UA : PF=%d\n", pf);
break;
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case RR:
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printf ("RR : N(R)=%d, PF=%d\n", nr, pf);
break;
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case RNR:
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printf ("RNR : N(R)=%d, PF=%d\n", nr, pf);
break;
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case REJ:
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printf ("REJ : N(R)=%d, PF=%d\n", nr, pf);
break;
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case IFRAME:
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{
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;
}
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default:
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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