FreeBSD/Linux Kernel Cross Reference
sys/netatalk/at_rmx.c

     /*
      * Copyright 1994, 1995 Massachusetts Institute of Technology
      *
      * Permission to use, copy, modify, and distribute this software and
      * its documentation for any purpose and without fee is hereby
      * granted, provided that both the above copyright notice and this
      * permission notice appear in all copies, that both the above
      * copyright notice and this permission notice appear in all
      * supporting documentation, and that the name of M.I.T. not be used
     * in advertising or publicity pertaining to distribution of the
     * software without specific, written prior permission.  M.I.T. makes
     * no representations about the suitability of this software for any
     * purpose.  It is provided "as is" without express or implied
     * warranty.
     *
     * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''.  M.I.T. DISCLAIMS
     * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
     * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
     * SHALL M.I.T. 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.
     *
     * at_rmx.c,v 1.13 1995/05/30 08:09:31 rgrimes Exp
     */
    
    /* This code generates debugging traces to the radix code */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/socket.h>
    
    #include <net/route.h>
    
    int at_inithead(void **head, int off);
    
    static char hexbuf[256];
    
    static char *
    prsockaddr(void *v)
    {
            char *bp = &hexbuf[0];
            u_char *cp = v;
    
            if (v) {
                    int len = *cp;
                    u_char *cplim = cp + len;
    
                    /* return: "(len) hexdump" */
    
                    bp += sprintf(bp, "(%d)", len);
                    for (cp++; cp < cplim && bp < hexbuf+252; cp++) {
                            *bp++ = "0123456789abcdef"[*cp / 16];
                            *bp++ = "0123456789abcdef"[*cp % 16];
                    }
            } else {
                    bp+= sprintf(bp, "null");
            }
            *bp = '\0';
            
            return &hexbuf[0];
    }
    
    static struct radix_node *
    at_addroute(void *v_arg, void *n_arg, struct radix_node_head *head,
                struct radix_node *treenodes)
    {
            struct radix_node *rn;
    
            printf("at_addroute: v=%s\n", prsockaddr(v_arg));
            printf("at_addroute: n=%s\n", prsockaddr(n_arg));
            printf("at_addroute: head=%p treenodes=%p\n",
                (void *)head, (void *)treenodes);
    
            rn = rn_addroute(v_arg, n_arg, head, treenodes);
    
            printf("at_addroute: returns rn=%p\n", (void *)rn);
    
            return rn;
    }
    
    static struct radix_node *
    at_matroute(void *v_arg, struct radix_node_head *head)
    {
            struct radix_node *rn;
    
            printf("at_matroute: v=%s\n", prsockaddr(v_arg));
            printf("at_matroute: head=%p\n", (void *)head);
    
            rn = rn_match(v_arg, head);
    
            printf("at_matroute: returnr rn=%p\n", (void *)rn);
    
            return rn;
   }
   
   static struct radix_node *
   at_lookup(void *v_arg, void *m_arg, struct radix_node_head *head)
   {
           struct radix_node *rn;
   
           printf("at_lookup: v=%s\n", prsockaddr(v_arg));
           printf("at_lookup: n=%s\n", prsockaddr(m_arg));
           printf("at_lookup: head=%p\n", (void *)head);
   
           rn = rn_lookup(v_arg, m_arg, head);
   
           printf("at_lookup: returns rn=%p\n", (void *)rn);
   
           return rn;
   }
   
   static struct radix_node *  
   at_delroute(void *v_arg, void *netmask_arg, struct radix_node_head *head)
   {
           struct radix_node *rn;
   
           printf("at_delroute: v=%s\n", prsockaddr(v_arg));
           printf("at_delroute: n=%s\n", prsockaddr(netmask_arg));
           printf("at_delroute: head=%p\n", (void *)head);
   
           rn = rn_delete(v_arg, netmask_arg, head);
   
           printf("at_delroute: returns rn=%p\n", (void *)rn);
   
           return rn;
   }
   
   /*
    * Initialize our routing tree with debugging hooks.
    */
   int
   at_inithead(void **head, int off)
   {
           struct radix_node_head *rnh;
   
           if(!rn_inithead(head, off))
                   return 0;
   
           rnh = *head;
           rnh->rnh_addaddr = at_addroute;
           rnh->rnh_deladdr = at_delroute;
           rnh->rnh_matchaddr = at_matroute;
           rnh->rnh_lookup = at_lookup;
           return 1;
   }

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