NetBSD/sys/netccitt/hd_debug.c

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/* $NetBSD: hd_debug.c,v 1.12 2001/11/13 00:12:57 lukem Exp $ */
/*
* Copyright (c) 1984 University of British Columbia.
* 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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#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hd_debug.c,v 1.12 2001/11/13 00:12:57 lukem 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>
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#include <net/if.h>
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#include <netccitt/hdlc.h>
#include <netccitt/hd_var.h>
#include <netccitt/x25.h>
#ifdef HDLCDEBUG
#define NTRACE 32
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struct hdlctrace {
struct hdcb *ht_hdp;
short ht_dir;
struct mbuf *ht_frame;
struct timeval ht_time;
} hdtrace[NTRACE];
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int lasttracelogged, freezetrace;
#endif
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void
hd_trace(hdp, direction, m)
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struct hdcb *hdp;
int direction;
struct mbuf *m;
{
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char *s;
int nr, pf, ns, i;
struct Hdlc_frame *frame = mtod(m, struct Hdlc_frame *);
struct Hdlc_iframe *iframe = (struct Hdlc_iframe *) frame;
#ifdef HDLCDEBUG
hd_savetrace(hdp, direction, m);
#endif
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if (hdp->hd_xcp->xc_ltrace) {
if (direction == RX)
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printf("F-In: ");
else if (direction == 2)
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printf("F-Xmt: ");
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else
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printf("F-Out: ");
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nr = iframe->nr;
pf = iframe->pf;
ns = iframe->ns;
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switch (hd_decode(hdp, frame)) {
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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struct Frmr_frame *f = (struct Frmr_frame *) frame;
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printf("FRMR : PF=%d, TEXT=", pf);
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for (s = (char *) frame, i = 0; i < 5; ++i, ++s)
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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",
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f->frmr_control, f->frmr_ns, f->frmr_nr,
f->frmr_w, f->frmr_x, f->frmr_y, f->frmr_z);
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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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int len = 0;
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for (; m; m = m->m_next)
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len += m->m_len;
len -= HDHEADERLN;
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printf("IFRAME : N(R)=%d, PF=%d, N(S)=%d, DATA(%d)=",
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nr, pf, ns, len);
for (s = (char *) iframe->i_field, i = 0; i < 3; ++i, ++s)
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printf("%x ", (int) *s & 0xff);
printf("\n");
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break;
}
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default:
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printf("ILLEGAL: ");
for (s = (char *) frame, i = 0; i < 5; ++i, ++s)
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printf("%x ", (int) *s & 0xff);
printf("\n");
}
}
}
#ifdef HDLCDEBUG
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static void
hd_savetrace(hdp, dir, m)
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struct hdcb *hdp;
int dir;
struct mbuf *m;
{
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struct hdlctrace *htp;
struct Hdlc_frame *frame = mtod(m, struct Hdlc_frame *);
if (freezetrace)
return;
htp = &hdtrace[lasttracelogged];
lasttracelogged = (lasttracelogged + 1) % NTRACE;
if (m = htp->ht_frame)
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m_freem(m);
htp->ht_frame = m_copy(m, 0, m->m_len);
htp->ht_hdp = hdp;
htp->ht_dir = dir;
htp->ht_time = time;
}
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void
hd_dumptrace(hdp)
struct hdcb *hdp;
{
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int i, ltrace;
struct hdlctrace *htp;
freezetrace = 1;
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hd_status(hdp);
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printf("retransmit queue:");
for (i = 0; i < 8; i++)
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printf(" %x", hdp->hd_retxq[i]);
printf("\n");
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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;
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printf("%d/%d ", htp->ht_time.tv_sec & 0xff,
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htp->ht_time.tv_usec / 10000);
hd_trace(htp->ht_hdp, htp->ht_dir, htp->ht_frame);
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m_freem(htp->ht_frame);
htp->ht_frame = 0;
}
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hdp->hd_xcp->xc_ltrace = ltrace;
freezetrace = 0;
}
#endif