1/* BGP open message handling 2 Copyright (C) 1999 Kunihiro Ishiguro 3 4This file is part of GNU Zebra. 5 6GNU Zebra is free software; you can redistribute it and/or modify it 7under the terms of the GNU General Public License as published by the 8Free Software Foundation; either version 2, or (at your option) any 9later version. 10 11GNU Zebra is distributed in the hope that it will be useful, but 12WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU Zebra; see the file COPYING. If not, write to the Free 18Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 1902111-1307, USA. */ 20 21#ifndef _QUAGGA_BGP_OPEN_H 22#define _QUAGGA_BGP_OPEN_H 23 24/* Standard header for capability TLV */ 25struct capability_header 26{ 27 u_char code; 28 u_char length; 29}; 30 31/* Generic MP capability data */ 32struct capability_mp_data 33{ 34 afi_t afi; 35 u_char reserved; 36 safi_t safi; 37}; 38 39#pragma pack(1) 40struct capability_orf_entry 41{ 42 struct capability_mp_data mpc; 43 u_char num; 44 struct { 45 u_char type; 46 u_char mode; 47 } orfs[]; 48} __attribute__ ((packed)); 49#pragma pack() 50 51struct capability_as4 52{ 53 uint32_t as4; 54}; 55 56struct graceful_restart_af 57{ 58 afi_t afi; 59 safi_t safi; 60 u_char flag; 61}; 62 63struct capability_gr 64{ 65 u_int16_t restart_flag_time; 66 struct graceful_restart_af gr[]; 67}; 68 69/* Capability Code */ 70#define CAPABILITY_CODE_MP 1 /* Multiprotocol Extensions */ 71#define CAPABILITY_CODE_REFRESH 2 /* Route Refresh Capability */ 72#define CAPABILITY_CODE_ORF 3 /* Cooperative Route Filtering Capability */ 73#define CAPABILITY_CODE_RESTART 64 /* Graceful Restart Capability */ 74#define CAPABILITY_CODE_AS4 65 /* 4-octet AS number Capability */ 75#define CAPABILITY_CODE_DYNAMIC 66 /* Dynamic Capability */ 76#define CAPABILITY_CODE_REFRESH_OLD 128 /* Route Refresh Capability(cisco) */ 77#define CAPABILITY_CODE_ORF_OLD 130 /* Cooperative Route Filtering Capability(cisco) */ 78 79/* Capability Length */ 80#define CAPABILITY_CODE_MP_LEN 4 81#define CAPABILITY_CODE_REFRESH_LEN 0 82#define CAPABILITY_CODE_DYNAMIC_LEN 0 83#define CAPABILITY_CODE_RESTART_LEN 2 /* Receiving only case */ 84#define CAPABILITY_CODE_AS4_LEN 4 85 86/* Cooperative Route Filtering Capability. */ 87 88/* ORF Type */ 89#define ORF_TYPE_PREFIX 64 90#define ORF_TYPE_PREFIX_OLD 128 91 92/* ORF Mode */ 93#define ORF_MODE_RECEIVE 1 94#define ORF_MODE_SEND 2 95#define ORF_MODE_BOTH 3 96 97/* Capability Message Action. */ 98#define CAPABILITY_ACTION_SET 0 99#define CAPABILITY_ACTION_UNSET 1 100 101/* Graceful Restart */ 102#define RESTART_R_BIT 0x8000 103#define RESTART_F_BIT 0x80 104 105extern int bgp_open_option_parse (struct peer *, u_char, int *); 106extern void bgp_open_capability (struct stream *, struct peer *); 107extern void bgp_capability_vty_out (struct vty *, struct peer *); 108extern as_t peek_for_as4_capability (struct peer *, u_char); 109extern int bgp_afi_safi_valid_indices (afi_t, safi_t *); 110 111#endif /* _QUAGGA_BGP_OPEN_H */ 112