babeld/message.h

   1 /*
   2  *  This file is free software: you may copy, redistribute and/or modify it
   3  *  under the terms of the GNU General Public License as published by the
   4  *  Free Software Foundation, either version 2 of the License, or (at your
   5  *  option) any later version.
   6  *
   7  *  This file is distributed in the hope that it will be useful, but
   8  *  WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  10  *  General Public License for more details.
  11  *
  12  *  You should have received a copy of the GNU General Public License
  13  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  14  *
  15  * This file incorporates work covered by the following copyright and
  16  * permission notice:
  17  *
  18 Copyright (c) 2007, 2008 by Juliusz Chroboczek
  19
  20 Permission is hereby granted, free of charge, to any person obtaining a copy
  21 of this software and associated documentation files (the "Software"), to deal
  22 in the Software without restriction, including without limitation the rights
  23 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  24 copies of the Software, and to permit persons to whom the Software is
  25 furnished to do so, subject to the following conditions:
  26
  27 The above copyright notice and this permission notice shall be included in
  28 all copies or substantial portions of the Software.
  29
  30 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  31 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  32 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  33 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  34 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  35 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  36 THE SOFTWARE.
  37 */
  38
  39 #ifndef BABEL_MESSAGE_H
  40 #define BABEL_MESSAGE_H
  41
  42 #include "babel_interface.h"
  43
  44 #define MAX_BUFFERED_UPDATES 200
  45
  46 #define BUCKET_TOKENS_MAX 200
  47 #define BUCKET_TOKENS_PER_SEC 40
  48
  49 #define MESSAGE_PAD1 0
  50 #define MESSAGE_PADN 1
  51 #define MESSAGE_ACK_REQ 2
  52 #define MESSAGE_ACK 3
  53 #define MESSAGE_HELLO 4
  54 #define MESSAGE_IHU 5
  55 #define MESSAGE_ROUTER_ID 6
  56 #define MESSAGE_NH 7
  57 #define MESSAGE_UPDATE 8
  58 #define MESSAGE_REQUEST 9
  59 #define MESSAGE_MH_REQUEST 10
  60
  61
  62 extern unsigned short myseqno;
  63 extern struct timeval seqno_time;
  64
  65 extern int parasitic;
  66 extern int broadcast_ihu;
  67 extern int split_horizon;
  68
  69 extern unsigned char packet_header[4];
  70
  71 extern struct neighbour *unicast_neighbour;
  72 extern struct timeval unicast_flush_timeout;
  73
  74 void parse_packet(const unsigned char *from, struct interface *ifp,
  75                   const unsigned char *packet, int packetlen);
  76 void flushbuf(struct interface *ifp);
  77 void flushupdates(struct interface *ifp);
  78 void send_ack(struct neighbour *neigh, unsigned short nonce,
  79               unsigned short interval);
  80 void send_hello_noupdate(struct interface *ifp, unsigned interval);
  81 void send_hello(struct interface *ifp);
  82 void flush_unicast(int dofree);
  83 void send_update(struct interface *ifp, int urgent,
  84                  const unsigned char *prefix, unsigned char plen);
  85 void send_update_resend(struct interface *ifp,
  86                         const unsigned char *prefix, unsigned char plen);
  87 void send_wildcard_retraction(struct interface *ifp);
  88 void update_myseqno(void);
  89 void send_self_update(struct interface *ifp);
  90 void send_ihu(struct neighbour *neigh, struct interface *ifp);
  91 void send_marginal_ihu(struct interface *ifp);
  92 void send_request(struct interface *ifp,
  93                   const unsigned char *prefix, unsigned char plen);
  94 void send_unicast_request(struct neighbour *neigh,
  95                           const unsigned char *prefix, unsigned char plen);
  96 void send_multihop_request(struct interface *ifp,
  97                            const unsigned char *prefix, unsigned char plen,
  98                            unsigned short seqno, const unsigned char *id,
  99                            unsigned short hop_count);
 100 void
 101 send_unicast_multihop_request(struct neighbour *neigh,
 102                               const unsigned char *prefix, unsigned char plen,
 103                               unsigned short seqno, const unsigned char *id,
 104                               unsigned short hop_count);
 105 void send_request_resend(struct neighbour *neigh,
 106                          const unsigned char *prefix, unsigned char plen,
 107                          unsigned short seqno, unsigned char *id);
 108 void handle_request(struct neighbour *neigh, const unsigned char *prefix,
 109                     unsigned char plen, unsigned char hop_count,
 110                     unsigned short seqno, const unsigned char *id);
 111
 112 #endif