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Diffstat (limited to 'bgpd/bgp_open.h')
| -rw-r--r-- | bgpd/bgp_open.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/bgpd/bgp_open.h b/bgpd/bgp_open.h new file mode 100644 index 0000000..19ddd9b --- /dev/null +++ b/bgpd/bgp_open.h @@ -0,0 +1,114 @@ +/* BGP open message handling + * Copyright (C) 1999 Kunihiro Ishiguro + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; see the file COPYING; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _QUAGGA_BGP_OPEN_H +#define _QUAGGA_BGP_OPEN_H + +/* Standard header for capability TLV */ +struct capability_header { + uint8_t code; + uint8_t length; +}; + +/* Generic MP capability data */ +struct capability_mp_data { + uint16_t afi; /* iana_afi_t */ + uint8_t reserved; + uint8_t safi; /* iana_safi_t */ +}; + +struct graceful_restart_af { + afi_t afi; + safi_t safi; + uint8_t flag; +}; + +/* Capability Code */ +#define CAPABILITY_CODE_MP 1 /* Multiprotocol Extensions */ +#define CAPABILITY_CODE_REFRESH 2 /* Route Refresh Capability */ +#define CAPABILITY_CODE_ORF 3 /* Cooperative Route Filtering Capability */ +#define CAPABILITY_CODE_RESTART 64 /* Graceful Restart Capability */ +#define CAPABILITY_CODE_AS4 65 /* 4-octet AS number Capability */ +#define CAPABILITY_CODE_DYNAMIC_OLD 66 /* Dynamic Capability, deprecated since 2003 */ +#define CAPABILITY_CODE_DYNAMIC 67 /* Dynamic Capability */ +#define CAPABILITY_CODE_ADDPATH 69 /* Addpath Capability */ +#define CAPABILITY_CODE_ENHANCED_RR 70 /* Enhanced Route Refresh capability */ +#define CAPABILITY_CODE_LLGR 71 /* Long-lived Graceful Restart */ +#define CAPABILITY_CODE_FQDN 73 /* Advertise hostname capability */ +#define CAPABILITY_CODE_ENHE 5 /* Extended Next Hop Encoding */ +#define CAPABILITY_CODE_REFRESH_OLD 128 /* Route Refresh Capability(cisco) */ +#define CAPABILITY_CODE_ORF_OLD 130 /* Cooperative Route Filtering Capability(cisco) */ +#define CAPABILITY_CODE_EXT_MESSAGE 6 /* Extended Message Support */ +#define CAPABILITY_CODE_ROLE 9 /* Role Capability */ + +/* Capability Length */ +#define CAPABILITY_CODE_MP_LEN 4 +#define CAPABILITY_CODE_REFRESH_LEN 0 +#define CAPABILITY_CODE_DYNAMIC_LEN 0 +#define CAPABILITY_CODE_RESTART_LEN 2 /* Receiving only case */ +#define CAPABILITY_CODE_AS4_LEN 4 +#define CAPABILITY_CODE_ADDPATH_LEN 4 +#define CAPABILITY_CODE_ENHE_LEN 6 /* NRLI AFI = 2, SAFI = 2, Nexthop AFI = 2 */ +#define CAPABILITY_CODE_MIN_FQDN_LEN 2 +#define CAPABILITY_CODE_ENHANCED_LEN 0 +#define CAPABILITY_CODE_LLGR_LEN 0 +#define CAPABILITY_CODE_ORF_LEN 5 +#define CAPABILITY_CODE_EXT_MESSAGE_LEN 0 /* Extended Message Support */ +#define CAPABILITY_CODE_ROLE_LEN 1 + +/* Cooperative Route Filtering Capability. */ + +/* ORF Type */ +#define ORF_TYPE_PREFIX 64 +#define ORF_TYPE_PREFIX_OLD 128 + +/* ORF Mode */ +#define ORF_MODE_RECEIVE 1 +#define ORF_MODE_SEND 2 +#define ORF_MODE_BOTH 3 + +/* Capability Message Action. */ +#define CAPABILITY_ACTION_SET 0 +#define CAPABILITY_ACTION_UNSET 1 + +/* Graceful Restart */ +#define GRACEFUL_RESTART_R_BIT 0x8000 +#define GRACEFUL_RESTART_N_BIT 0x4000 +#define GRACEFUL_RESTART_F_BIT 0x80 + +/* Long-lived Graceful Restart */ +#define LLGR_F_BIT 0x80 + +/* Optional Parameters */ +#define BGP_OPEN_NON_EXT_OPT_LEN 255 /* Non-Ext OP Len. */ +#define BGP_OPEN_NON_EXT_OPT_TYPE_EXTENDED_LENGTH 255 /* Non-Ext OP Type */ +#define BGP_OPEN_EXT_OPT_PARAMS_CAPABLE(peer) \ + (CHECK_FLAG(peer->flags, PEER_FLAG_EXTENDED_OPT_PARAMS) \ + || CHECK_FLAG(peer->sflags, PEER_STATUS_EXT_OPT_PARAMS_LENGTH)) + +extern int bgp_open_option_parse(struct peer *peer, uint16_t length, + int *mp_capability); +extern uint16_t bgp_open_capability(struct stream *s, struct peer *peer, + bool ext_opt_params); +extern void bgp_capability_vty_out(struct vty *vty, struct peer *peer, + bool use_json, json_object *json_neigh); +extern as_t peek_for_as4_capability(struct peer *peer, uint16_t length); + +#endif /* _QUAGGA_BGP_OPEN_H */ |