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718e3744 1/* BGP open message handling
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DL
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 */
718e3744 20
00d252cb 21#ifndef _QUAGGA_BGP_OPEN_H
22#define _QUAGGA_BGP_OPEN_H
23
6d58272b 24/* Standard header for capability TLV */
d62a17ae 25struct capability_header {
26 u_char code;
27 u_char length;
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28};
29
30/* Generic MP capability data */
d62a17ae 31struct capability_mp_data {
a46a2e9b 32 uint16_t afi; /* iana_afi_t */
d62a17ae 33 u_char reserved;
a46a2e9b 34 uint8_t safi; /* iana_safi_t */
718e3744 35};
36
d62a17ae 37struct capability_as4 {
38 uint32_t as4;
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39};
40
d62a17ae 41struct graceful_restart_af {
42 afi_t afi;
43 safi_t safi;
44 u_char flag;
538621f2 45};
46
d62a17ae 47struct capability_gr {
48 u_int16_t restart_flag_time;
49 struct graceful_restart_af gr[];
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50};
51
538621f2 52/* Capability Code */
53#define CAPABILITY_CODE_MP 1 /* Multiprotocol Extensions */
54#define CAPABILITY_CODE_REFRESH 2 /* Route Refresh Capability */
55#define CAPABILITY_CODE_ORF 3 /* Cooperative Route Filtering Capability */
56#define CAPABILITY_CODE_RESTART 64 /* Graceful Restart Capability */
6d58272b 57#define CAPABILITY_CODE_AS4 65 /* 4-octet AS number Capability */
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DS
58#define CAPABILITY_CODE_DYNAMIC_OLD 66 /* Dynamic Capability, deprecated since 2003 */
59#define CAPABILITY_CODE_DYNAMIC 67 /* Dynamic Capability */
a82478b9 60#define CAPABILITY_CODE_ADDPATH 69 /* Addpath Capability */
04b6bdc0 61#define CAPABILITY_CODE_FQDN 73 /* Advertise hostname capabilty */
8a92a8a0 62#define CAPABILITY_CODE_ENHE 5 /* Extended Next Hop Encoding */
538621f2 63#define CAPABILITY_CODE_REFRESH_OLD 128 /* Route Refresh Capability(cisco) */
64#define CAPABILITY_CODE_ORF_OLD 130 /* Cooperative Route Filtering Capability(cisco) */
718e3744 65
538621f2 66/* Capability Length */
67#define CAPABILITY_CODE_MP_LEN 4
718e3744 68#define CAPABILITY_CODE_REFRESH_LEN 0
538621f2 69#define CAPABILITY_CODE_DYNAMIC_LEN 0
70#define CAPABILITY_CODE_RESTART_LEN 2 /* Receiving only case */
6d58272b 71#define CAPABILITY_CODE_AS4_LEN 4
a82478b9 72#define CAPABILITY_CODE_ADDPATH_LEN 4
8a92a8a0 73#define CAPABILITY_CODE_ENHE_LEN 6 /* NRLI AFI = 2, SAFI = 2, Nexthop AFI = 2 */
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74#define CAPABILITY_CODE_MIN_FQDN_LEN 2
75#define CAPABILITY_CODE_ORF_LEN 5
718e3744 76
77/* Cooperative Route Filtering Capability. */
718e3744 78
538621f2 79/* ORF Type */
718e3744 80#define ORF_TYPE_PREFIX 64
81#define ORF_TYPE_PREFIX_OLD 128
82
538621f2 83/* ORF Mode */
718e3744 84#define ORF_MODE_RECEIVE 1
85#define ORF_MODE_SEND 2
86#define ORF_MODE_BOTH 3
87
718e3744 88/* Capability Message Action. */
89#define CAPABILITY_ACTION_SET 0
90#define CAPABILITY_ACTION_UNSET 1
91
538621f2 92/* Graceful Restart */
93#define RESTART_R_BIT 0x8000
94#define RESTART_F_BIT 0x80
95
d62a17ae 96extern int bgp_open_option_parse(struct peer *, u_char, int *);
97extern void bgp_open_capability(struct stream *, struct peer *);
98extern void bgp_capability_vty_out(struct vty *, struct peer *, u_char,
99 json_object *);
100extern as_t peek_for_as4_capability(struct peer *, u_char);
00d252cb 101
102#endif /* _QUAGGA_BGP_OPEN_H */