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    1: /*
    2:  * Copyright (C) 1999-2003 Yasuhiro Ohara
    3:  *
    4:  * This file is part of GNU Zebra.
    5:  *
    6:  * GNU Zebra is free software; you can redistribute it and/or modify it
    7:  * under the terms of the GNU General Public License as published by the
    8:  * Free Software Foundation; either version 2, or (at your option) any
    9:  * later version.
   10:  *
   11:  * GNU Zebra is distributed in the hope that it will be useful, but
   12:  * WITHOUT ANY WARRANTY; without even the implied warranty of
   13:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14:  * General Public License for more details.
   15:  *
   16:  * You should have received a copy of the GNU General Public License
   17:  * along with GNU Zebra; see the file COPYING.  If not, write to the 
   18:  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 
   19:  * Boston, MA 02111-1307, USA.  
   20:  */
   21: 
   22: #ifndef OSPF6_MESSAGE_H
   23: #define OSPF6_MESSAGE_H
   24: 
   25: #define OSPF6_MESSAGE_BUFSIZ  4096
   26: 
   27: /* Debug option */
   28: extern unsigned char conf_debug_ospf6_message[];
   29: #define OSPF6_DEBUG_MESSAGE_SEND 0x01
   30: #define OSPF6_DEBUG_MESSAGE_RECV 0x02
   31: #define OSPF6_DEBUG_MESSAGE_ON(type, level) \
   32:   (conf_debug_ospf6_message[type] |= (level))
   33: #define OSPF6_DEBUG_MESSAGE_OFF(type, level) \
   34:   (conf_debug_ospf6_message[type] &= ~(level))
   35: #define IS_OSPF6_DEBUG_MESSAGE(t, e) \
   36:   (conf_debug_ospf6_message[t] & OSPF6_DEBUG_MESSAGE_ ## e)
   37: 
   38: /* Type */
   39: #define OSPF6_MESSAGE_TYPE_UNKNOWN  0x0
   40: #define OSPF6_MESSAGE_TYPE_HELLO    0x1  /* Discover/maintain neighbors */
   41: #define OSPF6_MESSAGE_TYPE_DBDESC   0x2  /* Summarize database contents */
   42: #define OSPF6_MESSAGE_TYPE_LSREQ    0x3  /* Database download request */
   43: #define OSPF6_MESSAGE_TYPE_LSUPDATE 0x4  /* Database update */
   44: #define OSPF6_MESSAGE_TYPE_LSACK    0x5  /* Flooding acknowledgment */
   45: #define OSPF6_MESSAGE_TYPE_ALL      0x6  /* For debug option */
   46: 
   47: /* OSPFv3 packet header */
   48: #define OSPF6_HEADER_SIZE                     16U
   49: struct ospf6_header
   50: {
   51:   u_char    version;
   52:   u_char    type;
   53:   u_int16_t length;
   54:   u_int32_t router_id;
   55:   u_int32_t area_id;
   56:   u_int16_t checksum;
   57:   u_char    instance_id;
   58:   u_char    reserved;
   59: };
   60: 
   61: #define OSPF6_MESSAGE_END(H) ((caddr_t) (H) + ntohs ((H)->length))
   62: 
   63: /* Hello */
   64: #define OSPF6_HELLO_MIN_SIZE                  20U
   65: struct ospf6_hello
   66: {
   67:   u_int32_t interface_id;
   68:   u_char    priority;
   69:   u_char    options[3];
   70:   u_int16_t hello_interval;
   71:   u_int16_t dead_interval;
   72:   u_int32_t drouter;
   73:   u_int32_t bdrouter;
   74:   /* Followed by Router-IDs */
   75: };
   76: 
   77: /* Database Description */
   78: #define OSPF6_DB_DESC_MIN_SIZE                12U
   79: struct ospf6_dbdesc
   80: {
   81:   u_char    reserved1;
   82:   u_char    options[3];
   83:   u_int16_t ifmtu;
   84:   u_char    reserved2;
   85:   u_char    bits;
   86:   u_int32_t seqnum;
   87:   /* Followed by LSA Headers */
   88: };
   89: 
   90: #define OSPF6_DBDESC_MSBIT (0x01) /* master/slave bit */
   91: #define OSPF6_DBDESC_MBIT  (0x02) /* more bit */
   92: #define OSPF6_DBDESC_IBIT  (0x04) /* initial bit */
   93: 
   94: /* Link State Request */
   95: #define OSPF6_LS_REQ_MIN_SIZE                  0U
   96: /* It is just a sequence of entries below */
   97: #define OSPF6_LSREQ_LSDESC_FIX_SIZE           12U
   98: struct ospf6_lsreq_entry
   99: {
  100:   u_int16_t reserved;     /* Must Be Zero */
  101:   u_int16_t type;         /* LS type */
  102:   u_int32_t id;           /* Link State ID */
  103:   u_int32_t adv_router;   /* Advertising Router */
  104: };
  105: 
  106: /* Link State Update */
  107: #define OSPF6_LS_UPD_MIN_SIZE                  4U
  108: struct ospf6_lsupdate
  109: {
  110:   u_int32_t lsa_number;
  111:   /* Followed by LSAs */
  112: };
  113: 
  114: /* Link State Acknowledgement */
  115: #define OSPF6_LS_ACK_MIN_SIZE                  0U
  116: /* It is just a sequence of LSA Headers */
  117: 
  118: /* Function definition */
  119: extern void ospf6_hello_print (struct ospf6_header *);
  120: extern void ospf6_dbdesc_print (struct ospf6_header *);
  121: extern void ospf6_lsreq_print (struct ospf6_header *);
  122: extern void ospf6_lsupdate_print (struct ospf6_header *);
  123: extern void ospf6_lsack_print (struct ospf6_header *);
  124: 
  125: extern int ospf6_iobuf_size (unsigned int size);
  126: extern void ospf6_message_terminate (void);
  127: extern int ospf6_receive (struct thread *thread);
  128: 
  129: extern int ospf6_hello_send (struct thread *thread);
  130: extern int ospf6_dbdesc_send (struct thread *thread);
  131: extern int ospf6_dbdesc_send_newone (struct thread *thread);
  132: extern int ospf6_lsreq_send (struct thread *thread);
  133: extern int ospf6_lsupdate_send_interface (struct thread *thread);
  134: extern int ospf6_lsupdate_send_neighbor (struct thread *thread);
  135: extern int ospf6_lsack_send_interface (struct thread *thread);
  136: extern int ospf6_lsack_send_neighbor (struct thread *thread);
  137: 
  138: extern int config_write_ospf6_debug_message (struct vty *);
  139: extern void install_element_ospf6_debug_message (void);
  140: 
  141: #endif /* OSPF6_MESSAGE_H */
  142: