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 along
  17  * with this program; see the file COPYING; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef _QUAGGA_BGP_OPEN_H
  22 #define _QUAGGA_BGP_OPEN_H
  23
  24 /* Standard header for capability TLV */
  25 struct capability_header
  26 {
  27   u_char code;
  28   u_char length;
  29 };
  30
  31 /* Generic MP capability data */
  32 struct capability_mp_data
  33 {
  34   iana_afi_t afi;
  35   u_char reserved;
  36   safi_t safi;
  37 };
  38
  39 struct capability_as4
  40 {
  41   uint32_t as4;
  42 };
  43
  44 struct graceful_restart_af
  45 {
  46   afi_t afi;
  47   safi_t safi;
  48   u_char flag;
  49 };
  50
  51 struct capability_gr
  52 {
  53   u_int16_t restart_flag_time;
  54   struct graceful_restart_af gr[];
  55 };
  56
  57 /* Capability Code */
  58 #define CAPABILITY_CODE_MP              1 /* Multiprotocol Extensions */
  59 #define CAPABILITY_CODE_REFRESH         2 /* Route Refresh Capability */
  60 #define CAPABILITY_CODE_ORF             3 /* Cooperative Route Filtering Capability */
  61 #define CAPABILITY_CODE_RESTART        64 /* Graceful Restart Capability */
  62 #define CAPABILITY_CODE_AS4            65 /* 4-octet AS number Capability */
  63 #define CAPABILITY_CODE_DYNAMIC_OLD    66 /* Dynamic Capability, deprecated since 2003 */
  64 #define CAPABILITY_CODE_DYNAMIC        67 /* Dynamic Capability */
  65 #define CAPABILITY_CODE_ADDPATH        69 /* Addpath Capability */
  66 #define CAPABILITY_CODE_FQDN           73 /* Advertise hostname capabilty */
  67 #define CAPABILITY_CODE_ENHE            5 /* Extended Next Hop Encoding */
  68 #define CAPABILITY_CODE_REFRESH_OLD   128 /* Route Refresh Capability(cisco) */
  69 #define CAPABILITY_CODE_ORF_OLD       130 /* Cooperative Route Filtering Capability(cisco) */
  70
  71
  72 /* Capability Length */
  73 #define CAPABILITY_CODE_MP_LEN          4
  74 #define CAPABILITY_CODE_REFRESH_LEN     0
  75 #define CAPABILITY_CODE_DYNAMIC_LEN     0
  76 #define CAPABILITY_CODE_RESTART_LEN     2 /* Receiving only case */
  77 #define CAPABILITY_CODE_AS4_LEN         4
  78 #define CAPABILITY_CODE_ADDPATH_LEN     4
  79 #define CAPABILITY_CODE_ENHE_LEN        6 /* NRLI AFI = 2, SAFI = 2, Nexthop AFI = 2 */
  80 #define CAPABILITY_CODE_MIN_FQDN_LEN    2
  81 #define CAPABILITY_CODE_ORF_LEN         5
  82
  83 /* Cooperative Route Filtering Capability.  */
  84
  85 /* ORF Type */
  86 #define ORF_TYPE_PREFIX                64
  87 #define ORF_TYPE_PREFIX_OLD           128
  88
  89 /* ORF Mode */
  90 #define ORF_MODE_RECEIVE                1
  91 #define ORF_MODE_SEND                   2
  92 #define ORF_MODE_BOTH                   3
  93
  94 /* Capability Message Action.  */
  95 #define CAPABILITY_ACTION_SET           0
  96 #define CAPABILITY_ACTION_UNSET         1
  97
  98 /* Graceful Restart */
  99 #define RESTART_R_BIT              0x8000
 100 #define RESTART_F_BIT              0x80
 101
 102 extern int bgp_open_option_parse (struct peer *, u_char, int *);
 103 extern void bgp_open_capability (struct stream *, struct peer *);
 104 extern void bgp_capability_vty_out (struct vty *, struct peer *, u_char, json_object *);
 105 extern as_t peek_for_as4_capability (struct peer *, u_char);
 106
 107 #endif /* _QUAGGA_BGP_OPEN_H */