146 lines
4.5 KiB
C
146 lines
4.5 KiB
C
/* $NetBSD: pk_debug.c,v 1.7 1996/10/10 23:02:26 christos Exp $ */
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/*
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* Copyright (c) University of British Columbia, 1984
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Laboratory for Computation Vision and the Computer Science Department
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* of the University of British Columbia.
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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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* @(#)pk_debug.c 8.1 (Berkeley) 6/10/93
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*/
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#include <sys/param.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/protosw.h>
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#include <sys/socketvar.h>
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#include <sys/errno.h>
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#include <net/if.h>
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#include <netccitt/x25.h>
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#include <netccitt/pk.h>
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#include <netccitt/pk_var.h>
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#include <netccitt/pk_extern.h>
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char *pk_state[] = {
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"Listen", "Ready", "Received-Call",
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"Sent-Call", "Data-Transfer","Received-Clear",
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"Sent-Clear",
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};
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char *pk_name[] = {
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"Call", "Call-Conf", "Clear",
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"Clear-Conf", "Data", "Intr", "Intr-Conf",
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"Rr", "Rnr", "Reset", "Reset-Conf",
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"Restart", "Restart-Conf", "Reject", "Diagnostic",
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"Invalid"
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};
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void
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pk_trace (xcp, m, dir)
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struct x25config *xcp;
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register struct mbuf *m;
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char *dir;
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{
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register char *s;
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struct x25_packet *xp = mtod(m, struct x25_packet *);
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register int i, len = 0, cnt = 0;
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if (xcp -> xc_ptrace == 0)
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return;
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i = pk_decode (xp) / MAXSTATES;
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for (; m; m = m -> m_next) {
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len = len + m -> m_len;
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++cnt;
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}
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kprintf ("LCN=%d %s: %s #=%d, len=%d ",
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LCN(xp), dir, pk_name[i], cnt, len);
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for (s = (char *) xp, i = 0; i < 5; ++i, ++s)
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kprintf ("%x ", (int) * s & 0xff);
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kprintf ("\n");
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}
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void
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mbuf_cache(c, m)
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register struct mbuf_cache *c;
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struct mbuf *m;
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{
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register struct mbuf **mp;
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if (c->mbc_size != c->mbc_oldsize) {
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unsigned zero_size, copy_size;
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unsigned new_size = c->mbc_size * sizeof(m);
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caddr_t cache = (caddr_t)c->mbc_cache;
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if (new_size) {
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c->mbc_cache = (struct mbuf **)
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malloc(new_size, M_MBUF, M_NOWAIT);
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if (c->mbc_cache == 0) {
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c->mbc_cache = (struct mbuf **)cache;
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return;
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}
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c->mbc_num %= c->mbc_size;
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} else
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c->mbc_cache = 0;
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if (c->mbc_size < c->mbc_oldsize) {
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register struct mbuf **mplim;
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mp = c->mbc_size + (struct mbuf **)cache;
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mplim = c->mbc_oldsize + (struct mbuf **)cache;
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while (mp < mplim)
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m_freem(*mp++);
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zero_size = 0;
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} else
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zero_size = (c->mbc_size - c->mbc_oldsize) * sizeof(m);
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copy_size = new_size - zero_size;
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c->mbc_oldsize = c->mbc_size;
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if (copy_size)
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bcopy(cache, (caddr_t)c->mbc_cache, copy_size);
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if (cache)
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free(cache, M_MBUF);
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if (zero_size)
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bzero(copy_size + (caddr_t)c->mbc_cache, zero_size);
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}
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if (c->mbc_size == 0)
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return;
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mp = c->mbc_cache + c->mbc_num;
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c->mbc_num = (1 + c->mbc_num) % c->mbc_size;
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if (*mp)
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m_freem(*mp);
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if ((*mp = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) != NULL)
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(*mp)->m_flags |= m->m_flags & 0x08;
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}
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