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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 | uint8_t code; | |
27 | uint8_t length; | |
28 | }; | |
29 | ||
30 | /* Generic MP capability data */ | |
31 | struct capability_mp_data { | |
32 | uint16_t afi; /* iana_afi_t */ | |
33 | uint8_t reserved; | |
34 | uint8_t safi; /* iana_safi_t */ | |
35 | }; | |
36 | ||
37 | struct graceful_restart_af { | |
38 | afi_t afi; | |
39 | safi_t safi; | |
40 | uint8_t flag; | |
41 | }; | |
42 | ||
43 | /* Capability Code */ | |
44 | #define CAPABILITY_CODE_MP 1 /* Multiprotocol Extensions */ | |
45 | #define CAPABILITY_CODE_REFRESH 2 /* Route Refresh Capability */ | |
46 | #define CAPABILITY_CODE_ORF 3 /* Cooperative Route Filtering Capability */ | |
47 | #define CAPABILITY_CODE_RESTART 64 /* Graceful Restart Capability */ | |
48 | #define CAPABILITY_CODE_AS4 65 /* 4-octet AS number Capability */ | |
49 | #define CAPABILITY_CODE_DYNAMIC_OLD 66 /* Dynamic Capability, deprecated since 2003 */ | |
50 | #define CAPABILITY_CODE_DYNAMIC 67 /* Dynamic Capability */ | |
51 | #define CAPABILITY_CODE_ADDPATH 69 /* Addpath Capability */ | |
52 | #define CAPABILITY_CODE_FQDN 73 /* Advertise hostname capability */ | |
53 | #define CAPABILITY_CODE_ENHE 5 /* Extended Next Hop Encoding */ | |
54 | #define CAPABILITY_CODE_REFRESH_OLD 128 /* Route Refresh Capability(cisco) */ | |
55 | #define CAPABILITY_CODE_ORF_OLD 130 /* Cooperative Route Filtering Capability(cisco) */ | |
56 | ||
57 | /* Capability Length */ | |
58 | #define CAPABILITY_CODE_MP_LEN 4 | |
59 | #define CAPABILITY_CODE_REFRESH_LEN 0 | |
60 | #define CAPABILITY_CODE_DYNAMIC_LEN 0 | |
61 | #define CAPABILITY_CODE_RESTART_LEN 2 /* Receiving only case */ | |
62 | #define CAPABILITY_CODE_AS4_LEN 4 | |
63 | #define CAPABILITY_CODE_ADDPATH_LEN 4 | |
64 | #define CAPABILITY_CODE_ENHE_LEN 6 /* NRLI AFI = 2, SAFI = 2, Nexthop AFI = 2 */ | |
65 | #define CAPABILITY_CODE_MIN_FQDN_LEN 2 | |
66 | #define CAPABILITY_CODE_ORF_LEN 5 | |
67 | ||
68 | /* Cooperative Route Filtering Capability. */ | |
69 | ||
70 | /* ORF Type */ | |
71 | #define ORF_TYPE_PREFIX 64 | |
72 | #define ORF_TYPE_PREFIX_OLD 128 | |
73 | ||
74 | /* ORF Mode */ | |
75 | #define ORF_MODE_RECEIVE 1 | |
76 | #define ORF_MODE_SEND 2 | |
77 | #define ORF_MODE_BOTH 3 | |
78 | ||
79 | /* Capability Message Action. */ | |
80 | #define CAPABILITY_ACTION_SET 0 | |
81 | #define CAPABILITY_ACTION_UNSET 1 | |
82 | ||
83 | /* Graceful Restart */ | |
84 | #define RESTART_R_BIT 0x8000 | |
85 | #define RESTART_F_BIT 0x80 | |
86 | ||
87 | extern int bgp_open_option_parse(struct peer *, uint8_t, int *); | |
88 | extern void bgp_open_capability(struct stream *, struct peer *); | |
89 | extern void bgp_capability_vty_out(struct vty *vty, struct peer *peer, | |
90 | bool use_json, json_object *json_neigh); | |
91 | extern as_t peek_for_as4_capability(struct peer *, uint8_t); | |
92 | ||
93 | #endif /* _QUAGGA_BGP_OPEN_H */ |