include/net/mip6.h

   1 /*
   2  * Copyright (C)2003-2006 Helsinki University of Technology
   3  * Copyright (C)2003-2006 USAGI/WIDE Project
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  */
  19 /*
  20  * Authors:
  21  *      Noriaki TAKAMIYA @USAGI
  22  *      Masahide NAKAMURA @USAGI
  23  *      YOSHIFUJI Hideaki @USAGI
  24  */
  25 #ifndef _NET_MIP6_H
  26 #define _NET_MIP6_H
  27
  28 #include <linux/skbuff.h>
  29 #include <net/sock.h>
  30
  31 #define MIP6_OPT_PAD_1  0
  32 #define MIP6_OPT_PAD_N  1
  33
  34 /*
  35  * Mobility Header
  36  */
  37 struct ip6_mh {
  38         __u8    ip6mh_proto;
  39         __u8    ip6mh_hdrlen;
  40         __u8    ip6mh_type;
  41         __u8    ip6mh_reserved;
  42         __u16   ip6mh_cksum;
  43         /* Followed by type specific messages */
  44         __u8    data[0];
  45 } __attribute__ ((__packed__));
  46
  47 #define IP6_MH_TYPE_BRR         0   /* Binding Refresh Request */
  48 #define IP6_MH_TYPE_HOTI        1   /* HOTI Message   */
  49 #define IP6_MH_TYPE_COTI        2   /* COTI Message  */
  50 #define IP6_MH_TYPE_HOT         3   /* HOT Message   */
  51 #define IP6_MH_TYPE_COT         4   /* COT Message  */
  52 #define IP6_MH_TYPE_BU          5   /* Binding Update */
  53 #define IP6_MH_TYPE_BACK        6   /* Binding ACK */
  54 #define IP6_MH_TYPE_BERROR      7   /* Binding Error */
  55 #define IP6_MH_TYPE_MAX         IP6_MH_TYPE_BERROR
  56
  57 extern int mip6_init(void);
  58 extern void mip6_fini(void);
  59 extern int mip6_mh_filter(struct sock *sk, struct sk_buff *skb);
  60
  61 #endif