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1 /* BGP packet management header.
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_PACKET_H
22 #define _QUAGGA_BGP_PACKET_H
23
24 #include "hook.h"
25
26 DECLARE_HOOK(bgp_packet_dump,
27 (struct peer *peer, uint8_t type, bgp_size_t size,
28 struct stream *s),
29 (peer, type, size, s));
30
31 DECLARE_HOOK(bgp_packet_send,
32 (struct peer *peer, uint8_t type, bgp_size_t size,
33 struct stream *s),
34 (peer, type, size, s));
35
36 #define BGP_NLRI_LENGTH 1U
37 #define BGP_TOTAL_ATTR_LEN 2U
38 #define BGP_UNFEASIBLE_LEN 2U
39
40 /* When to refresh */
41 #define REFRESH_IMMEDIATE 1
42 #define REFRESH_DEFER 2
43
44 /* ORF Common part flag */
45 #define ORF_COMMON_PART_ADD 0x00
46 #define ORF_COMMON_PART_REMOVE 0x80
47 #define ORF_COMMON_PART_REMOVE_ALL 0xC0
48 #define ORF_COMMON_PART_PERMIT 0x00
49 #define ORF_COMMON_PART_DENY 0x20
50
51 #define BGP_UPDATE_EOR_PKT(_peer, _afi, _safi, _s) \
52 do { \
53 _s = bgp_update_packet_eor(_peer, _afi, _safi); \
54 if (_s) { \
55 bgp_packet_add(_peer, _s); \
56 } \
57 } while (0)
58
59 /* Packet send and receive function prototypes. */
60 extern void bgp_keepalive_send(struct peer *);
61 extern void bgp_open_send(struct peer *);
62 extern void bgp_notify_send(struct peer *, uint8_t, uint8_t);
63 extern void bgp_notify_send_with_data(struct peer *, uint8_t, uint8_t,
64 uint8_t *, size_t);
65 extern void bgp_route_refresh_send(struct peer *peer, afi_t afi, safi_t safi,
66 uint8_t orf_type, uint8_t when_to_refresh,
67 int remove, uint8_t subtype);
68 extern void bgp_capability_send(struct peer *, afi_t, safi_t, int, int);
69
70 extern int bgp_capability_receive(struct peer *, bgp_size_t);
71
72 extern int bgp_nlri_parse(struct peer *, struct attr *, struct bgp_nlri *,
73 int mp_withdraw);
74
75 extern void bgp_update_restarted_peers(struct peer *);
76 extern void bgp_update_implicit_eors(struct peer *);
77 extern void bgp_check_update_delay(struct bgp *);
78
79 extern int bgp_packet_set_marker(struct stream *s, uint8_t type);
80 extern void bgp_packet_set_size(struct stream *s);
81
82 extern int bgp_generate_updgrp_packets(struct thread *);
83 extern int bgp_process_packet(struct thread *);
84
85 extern void bgp_send_delayed_eor(struct bgp *bgp);
86
87 /* Task callback to handle socket error encountered in the io pthread */
88 int bgp_packet_process_error(struct thread *thread);
89
90 #endif /* _QUAGGA_BGP_PACKET_H */