bgpd/bgp_open.h

   1 /* BGP open message handling
   2    Copyright (C) 1999 Kunihiro Ishiguro
   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 Free
  18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19 02111-1307, USA.  */
  20
  21 /* MP Capability information. */
  22 struct capability_mp
  23 {
  24   u_int16_t afi;
  25   u_char reserved;
  26   u_char safi;
  27 };
  28
  29 /* BGP open message capability. */
  30 struct capability
  31 {
  32   u_char code;
  33   u_char length;
  34   struct capability_mp mpc;
  35 };
  36
  37 struct graceful_restart_af
  38 {
  39   u_int16_t afi;
  40   u_char safi;
  41   u_char flag;
  42 };
  43
  44 /* Capability Code */
  45 #define CAPABILITY_CODE_MP              1 /* Multiprotocol Extensions */
  46 #define CAPABILITY_CODE_REFRESH         2 /* Route Refresh Capability */
  47 #define CAPABILITY_CODE_ORF             3 /* Cooperative Route Filtering Capability */
  48 #define CAPABILITY_CODE_RESTART        64 /* Graceful Restart Capability */
  49 #define CAPABILITY_CODE_4BYTE_AS       65 /* 4-octet AS number Capability */
  50 #define CAPABILITY_CODE_DYNAMIC        66 /* Dynamic Capability */
  51 #define CAPABILITY_CODE_REFRESH_OLD   128 /* Route Refresh Capability(cisco) */
  52 #define CAPABILITY_CODE_ORF_OLD       130 /* Cooperative Route Filtering Capability(cisco) */
  53
  54 /* Capability Length */
  55 #define CAPABILITY_CODE_MP_LEN          4
  56 #define CAPABILITY_CODE_REFRESH_LEN     0
  57 #define CAPABILITY_CODE_DYNAMIC_LEN     0
  58 #define CAPABILITY_CODE_RESTART_LEN     2 /* Receiving only case */
  59
  60 /* Cooperative Route Filtering Capability.  */
  61
  62 /* ORF Type */
  63 #define ORF_TYPE_PREFIX                64
  64 #define ORF_TYPE_PREFIX_OLD           128
  65
  66 /* ORF Mode */
  67 #define ORF_MODE_RECEIVE                1
  68 #define ORF_MODE_SEND                   2
  69 #define ORF_MODE_BOTH                   3
  70
  71 /* Capability Message Action.  */
  72 #define CAPABILITY_ACTION_SET           0
  73 #define CAPABILITY_ACTION_UNSET         1
  74
  75 /* Graceful Restart */
  76 #define RESTART_R_BIT              0x8000
  77 #define RESTART_F_BIT              0x80
  78
  79 int bgp_open_option_parse (struct peer *, u_char, int *);
  80 void bgp_open_capability (struct stream *, struct peer *);
  81 void bgp_capability_vty_out (struct vty *, struct peer *);