usr.sbin/vknetd/vknetd.h

   1 /*
   2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/usr.sbin/vknetd/vknetd.h,v 1.1 2008/05/27 01:58:01 dillon Exp $
  35  */
  36
  37 #include <sys/types.h>
  38 #include <sys/stat.h>
  39 #include <sys/socket.h>
  40 #include <sys/un.h>
  41 #include <netinet/in.h>
  42 #include <netdb.h>
  43 #include <arpa/inet.h>
  44 #include <sys/queue.h>
  45 #include <sys/sockio.h>
  46 #include <net/if.h>
  47 #include <net/ethernet.h>
  48 #include <net/bridge/if_bridgevar.h>
  49 #include <stdio.h>
  50 #include <signal.h>
  51 #include <stdlib.h>
  52 #include <stddef.h>
  53 #include <string.h>
  54 #include <unistd.h>
  55 #include <fcntl.h>
  56 #include <errno.h>
  57 #include <assert.h>
  58 #include <err.h>
  59 #include <grp.h>
  60
  61 #include <pthread.h>
  62
  63 struct ioinfo;
  64 TAILQ_HEAD(mac_list, mac);
  65
  66 typedef struct bridge {
  67         TAILQ_ENTRY(bridge) entry;
  68         struct mac_list mac_list;
  69         struct bridge *fd_next;
  70         struct ioinfo *io;
  71         int flags;
  72 } *bridge_t;
  73
  74 typedef struct mac {
  75         TAILQ_ENTRY(mac) lru_entry;
  76         TAILQ_ENTRY(mac) bridge_entry;
  77         struct mac *mac_next;
  78         bridge_t bridge;
  79         u_int8_t macbuf[6];
  80 } *mac_t;
  81
  82 #define BRIDGE_HSIZE    256
  83 #define BRIDGE_HMASK    (BRIDGE_HSIZE - 1)
  84
  85 #define MAC_HSIZE       1024
  86 #define MAC_HMASK       (MAC_HSIZE - 1)
  87
  88 #define NMACS           1024
  89
  90 #define MAXPKT          (8192 + 128)
  91
  92 typedef struct ioinfo {
  93         int     fd;
  94         int     istap;
  95 } *ioinfo_t;
  96
  97 extern int SecureOpt;
  98 extern struct in_addr NetAddress;
  99 extern struct in_addr NetMask;
 100
 101 bridge_t bridge_add(ioinfo_t io);
 102 void bridge_del(bridge_t bridge);
 103 void bridge_packet(bridge_t bridge, u_int8_t *pkt, int bytes);
 104
 105 void mac_init(void);
 106 mac_t mac_find(u_int8_t *macbuf);
 107 void mac_add(bridge_t bridge, u_int8_t *macbuf);
 108 void mac_delete(mac_t mac);
 109 int mac_broadcast(u_int8_t *macbuf);
 110
 111 int filter_ok(u_int8_t *pkt, int bytes);
 112