FreeBSD/Linux Kernel Cross Reference
sys/netccitt/pk_debug.c

     /*      $NetBSD: pk_debug.c,v 1.12 2003/08/07 16:33:03 agc Exp $        */
     
     /*
      * 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. 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.
     *
     *      @(#)pk_debug.c  8.1 (Berkeley) 6/10/93
     */
    
    /*
     * Copyright (c) 1984 University of British Columbia.
     *
     * 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.
     *
     *      @(#)pk_debug.c  8.1 (Berkeley) 6/10/93
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: pk_debug.c,v 1.12 2003/08/07 16:33:03 agc Exp $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/socket.h>
    #include <sys/protosw.h>
    #include <sys/socketvar.h>
    #include <sys/errno.h>
    
    #include <net/if.h>
    
    #include <netccitt/x25.h>
    #include <netccitt/pk.h>
    #include <netccitt/pk_var.h>
    #include <netccitt/pk_extern.h>
    
    char    *pk_state[] = {
            "Listen",       "Ready",        "Received-Call",
            "Sent-Call",    "Data-Transfer","Received-Clear",
            "Sent-Clear",
    };
    
   char   *pk_name[] = {
           "Call",         "Call-Conf",    "Clear",
           "Clear-Conf",   "Data",         "Intr",         "Intr-Conf",
           "Rr",           "Rnr",          "Reset",        "Reset-Conf",
           "Restart",      "Restart-Conf", "Reject",       "Diagnostic",
           "Invalid"
   };
   
   void
   pk_trace (xcp, m, dir)
           struct x25config *xcp;
           struct mbuf *m;
           char *dir;
   {
           char *s;
           struct x25_packet *xp = mtod(m, struct x25_packet *);
           int i, len = 0, cnt = 0;
   
           if (xcp -> xc_ptrace == 0)
                   return;
   
           i = pk_decode (xp) / MAXSTATES;
           for (; m; m = m -> m_next) {
                   len = len + m -> m_len;
                   ++cnt;
           }
           printf ("LCN=%d %s:     %s      #=%d, len=%d ",
                   LCN(xp), dir, pk_name[i], cnt, len);
           for (s = (char *) xp, i = 0; i < 5; ++i, ++s)
                   printf ("%x ", (int) * s & 0xff);
           printf ("\n");
   }
   
   void
   mbuf_cache(c, m)
           struct mbuf_cache *c;
           struct mbuf *m;
   {
           struct mbuf **mp;
   
           if (c->mbc_size != c->mbc_oldsize) {
                   unsigned zero_size, copy_size;
                   unsigned new_size = c->mbc_size * sizeof(m);
                   caddr_t cache = (caddr_t)c->mbc_cache;
   
                   if (new_size) {
                           c->mbc_cache = (struct mbuf **)
                                   malloc(new_size, M_MBUF, M_NOWAIT);
                           if (c->mbc_cache == 0) {
                                   c->mbc_cache = (struct mbuf **)cache;
                                   return;
                           }
                           c->mbc_num %= c->mbc_size;
                   } else
                           c->mbc_cache = 0;
                   if (c->mbc_size < c->mbc_oldsize) {
                           struct mbuf **mplim;
                           mp = c->mbc_size + (struct mbuf **)cache;
                           mplim = c->mbc_oldsize + (struct mbuf **)cache;
                           while (mp < mplim)
                                   m_freem(*mp++);
                           zero_size = 0;
                   } else
                           zero_size = (c->mbc_size - c->mbc_oldsize) * sizeof(m);
                   copy_size = new_size - zero_size;
                   c->mbc_oldsize = c->mbc_size;
                   if (copy_size)
                           bcopy(cache, (caddr_t)c->mbc_cache, copy_size);
                   if (cache)
                           free(cache, M_MBUF);
                   if (zero_size)
                           bzero(copy_size + (caddr_t)c->mbc_cache, zero_size);
           }
           if (c->mbc_size == 0)
                   return;
           mp = c->mbc_cache + c->mbc_num;
           c->mbc_num = (1 + c->mbc_num) % c->mbc_size;
           if (*mp)
                   m_freem(*mp);
           if ((*mp = m_copym(m, 0, M_COPYALL, M_DONTWAIT)) != NULL)
                   (*mp)->m_flags |= m->m_flags & 0x08;
   }

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