]>
Commit | Line | Data |
---|---|---|
718e3744 | 1 | /* BGP-4 Finite State Machine |
896014f4 DL |
2 | * From RFC1771 [A Border Gateway Protocol 4 (BGP-4)] |
3 | * Copyright (C) 1998 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
718e3744 | 21 | |
00d252cb | 22 | #ifndef _QUAGGA_BGP_FSM_H |
23 | #define _QUAGGA_BGP_FSM_H | |
24 | ||
718e3744 | 25 | /* Macro for BGP read, write and timer thread. */ |
ffa2c898 QY |
26 | #define BGP_READ_ON(T,F,V) \ |
27 | do { \ | |
28 | if ((peer->status != Deleted)) \ | |
29 | thread_add_read (bm->master,(F),peer,(V),&(T)); \ | |
200df115 | 30 | } while (0) |
718e3744 | 31 | |
ffa2c898 QY |
32 | #define BGP_READ_OFF(T) \ |
33 | do { \ | |
34 | if (T) \ | |
35 | THREAD_READ_OFF(T); \ | |
200df115 | 36 | } while (0) |
718e3744 | 37 | |
ffa2c898 QY |
38 | #define BGP_WRITE_ON(T,F,V) \ |
39 | do { \ | |
40 | if ((peer)->status != Deleted) \ | |
41 | thread_add_write (bm->master,(F),(peer),(V),&(T)); \ | |
200df115 | 42 | } while (0) |
3f9c7369 | 43 | |
ffa2c898 QY |
44 | #define BGP_PEER_WRITE_ON(T,F,V, peer) \ |
45 | do { \ | |
46 | if ((peer)->status != Deleted) \ | |
47 | thread_add_write (bm->master,(F),(peer),(V),&(T)); \ | |
3f9c7369 DS |
48 | } while (0) |
49 | ||
ffa2c898 QY |
50 | #define BGP_WRITE_OFF(T) \ |
51 | do { \ | |
52 | if (T) \ | |
53 | THREAD_WRITE_OFF(T); \ | |
200df115 | 54 | } while (0) |
718e3744 | 55 | |
ffa2c898 QY |
56 | #define BGP_TIMER_ON(T,F,V) \ |
57 | do { \ | |
58 | if ((peer->status != Deleted)) \ | |
59 | thread_add_timer (bm->master,(F),peer,(V),&(T)); \ | |
200df115 | 60 | } while (0) |
718e3744 | 61 | |
ffa2c898 QY |
62 | #define BGP_TIMER_OFF(T) \ |
63 | do { \ | |
64 | if (T) \ | |
65 | THREAD_TIMER_OFF(T); \ | |
200df115 | 66 | } while (0) |
67 | ||
ffa2c898 QY |
68 | #define BGP_EVENT_ADD(P,E) \ |
69 | do { \ | |
70 | if ((P)->status != Deleted) \ | |
71 | thread_add_event (bm->master, bgp_event, (P), (E), NULL); \ | |
200df115 | 72 | } while (0) |
73 | ||
ffa2c898 QY |
74 | #define BGP_EVENT_FLUSH(P) \ |
75 | do { \ | |
76 | assert (peer); \ | |
77 | thread_cancel_event (bm->master, (P)); \ | |
200df115 | 78 | } while (0) |
718e3744 | 79 | |
cb1faec9 DS |
80 | #define BGP_MSEC_JITTER 10 |
81 | ||
718e3744 | 82 | /* Prototypes. */ |
fc9a856f | 83 | extern void bgp_fsm_nht_update(struct peer *, int valid); |
00d252cb | 84 | extern int bgp_event (struct thread *); |
1ff9a340 | 85 | extern int bgp_event_update (struct peer *, int event); |
00d252cb | 86 | extern int bgp_stop (struct peer *peer); |
87 | extern void bgp_timer_set (struct peer *); | |
3f9c7369 | 88 | extern int bgp_routeadv_timer (struct thread *); |
00d252cb | 89 | extern void bgp_fsm_change_status (struct peer *peer, int status); |
fd79ac91 | 90 | extern const char *peer_down_str[]; |
f188f2c4 | 91 | extern void bgp_update_delay_end (struct bgp *); |
abc920f8 DS |
92 | extern void bgp_maxmed_update (struct bgp *); |
93 | extern int bgp_maxmed_onstartup_configured (struct bgp *); | |
94 | extern int bgp_maxmed_onstartup_active (struct bgp *); | |
00d252cb | 95 | |
cb1faec9 DS |
96 | /** |
97 | * Start the route advertisement timer (that honors MRAI) for all the | |
98 | * peers. Typically called at the end of initial convergence, coming | |
99 | * out of read-only mode. | |
100 | */ | |
101 | extern void bgp_start_routeadv (struct bgp *); | |
102 | ||
103 | /** | |
104 | * See if the route advertisement timer needs to be adjusted for a | |
105 | * peer. For example, if the last update was written to the peer a | |
106 | * long while back, we don't need to wait for the periodic advertisement | |
107 | * timer to expire to send the new set of prefixes. It should fire | |
108 | * instantly and updates should go out sooner. | |
109 | */ | |
110 | extern void bgp_adjust_routeadv (struct peer *); | |
111 | ||
3012671f DL |
112 | #include "hook.h" |
113 | DECLARE_HOOK(peer_backward_transition, (struct peer *peer), (peer)) | |
114 | DECLARE_HOOK(peer_established, (struct peer *peer), (peer)) | |
115 | ||
00d252cb | 116 | #endif /* _QUAGGA_BGP_FSM_H */ |