summaryrefslogtreecommitdiffstats
path: root/bgpd/bgp_open.h
blob: 459b966dd212bcec696b9a5558df0c979088fe61 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
/* 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
{
  u_char code;
  u_char length;
};

/* Generic MP capability data */
struct capability_mp_data
{
  iana_afi_t afi;
  u_char reserved;
  safi_t safi;
};

#pragma pack(1)
struct capability_orf_entry 
{
  struct capability_mp_data mpc;
  u_char num;
  struct {
    u_char type;
    u_char mode;
  } orfs[];
} __attribute__ ((packed));
#pragma pack()

struct capability_as4
{
  uint32_t as4;
};

struct graceful_restart_af
{
  afi_t afi;
  safi_t safi;
  u_char flag;
};

struct capability_gr
{
  u_int16_t restart_flag_time;
  struct graceful_restart_af gr[];
};

/* 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_FQDN           73 /* Advertise hostname capabilty */
#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) */


/* 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_ORF_LEN         5

/* 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 RESTART_R_BIT              0x8000
#define RESTART_F_BIT              0x80

extern int bgp_open_option_parse (struct peer *, u_char, int *);
extern void bgp_open_capability (struct stream *, struct peer *);
extern void bgp_capability_vty_out (struct vty *, struct peer *, u_char, json_object *);
extern as_t peek_for_as4_capability (struct peer *, u_char);

#endif /* _QUAGGA_BGP_OPEN_H */