projects / mirror_frr.git / blame
| Commit | Line | Data |
|---|---|---|
| d62a17ae | 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. */ |
| d62a17ae | 26 | #define BGP_TIMER_ON(T, F, V) \ |
| 27 | do { \ | |
| 28 | if ((peer->status != Deleted)) \ | |
| 29 | thread_add_timer(bm->master, (F), peer, (V), &(T)); \ | |
| 30 | } while (0) | |
| 31 | ||
| 32 | #define BGP_TIMER_OFF(T) \ | |
| 33 | do { \ | |
| 34 | if (T) \ | |
| 35 | THREAD_TIMER_OFF(T); \ | |
| 36 | } while (0) | |
| 37 | ||
| 38 | #define BGP_EVENT_ADD(P, E) \ | |
| 39 | do { \ | |
| 40 | if ((P)->status != Deleted) \ | |
| 41 | thread_add_event(bm->master, bgp_event, (P), (E), \ | |
| 42 | NULL); \ | |
| 43 | } while (0) | |
| 44 | ||
| 45 | #define BGP_EVENT_FLUSH(P) \ | |
| 46 | do { \ | |
| 47 | assert(peer); \ | |
| 48 | thread_cancel_event(bm->master, (P)); \ | |
| 49 | } while (0) | |
| 718e3744 | 50 | |
| cb1faec9 DS |
51 | #define BGP_MSEC_JITTER 10 |
| 52 | ||
| d8151687 QY |
53 | /* Status codes for bgp_event_update() */ |
| 54 | #define FSM_PEER_NOOP 0 | |
| 55 | #define FSM_PEER_STOPPED 1 | |
| 56 | #define FSM_PEER_TRANSFERRED 2 | |
| 57 | #define FSM_PEER_TRANSITIONED 3 | |
| 58 | ||
| 718e3744 | 59 | /* Prototypes. */ |
| fc04a677 | 60 | extern void bgp_fsm_event_update(struct peer *peer, int valid); |
| d62a17ae | 61 | extern int bgp_event(struct thread *); |
| 62 | extern int bgp_event_update(struct peer *, int event); | |
| 63 | extern int bgp_stop(struct peer *peer); | |
| 64 | extern void bgp_timer_set(struct peer *); | |
| 65 | extern int bgp_routeadv_timer(struct thread *); | |
| 66 | extern void bgp_fsm_change_status(struct peer *peer, int status); | |
| fd79ac91 | 67 | extern const char *peer_down_str[]; |
| d62a17ae | 68 | extern void bgp_update_delay_end(struct bgp *); |
| 69 | extern void bgp_maxmed_update(struct bgp *); | |
| 70 | extern int bgp_maxmed_onstartup_configured(struct bgp *); | |
| 71 | extern int bgp_maxmed_onstartup_active(struct bgp *); | |
| 00d252cb | 72 | |
| cb1faec9 DS |
73 | /** |
| 74 | * Start the route advertisement timer (that honors MRAI) for all the | |
| 75 | * peers. Typically called at the end of initial convergence, coming | |
| 76 | * out of read-only mode. | |
| 77 | */ | |
| d62a17ae | 78 | extern void bgp_start_routeadv(struct bgp *); |
| cb1faec9 DS |
79 | |
| 80 | /** | |
| 81 | * See if the route advertisement timer needs to be adjusted for a | |
| 82 | * peer. For example, if the last update was written to the peer a | |
| 83 | * long while back, we don't need to wait for the periodic advertisement | |
| 84 | * timer to expire to send the new set of prefixes. It should fire | |
| 85 | * instantly and updates should go out sooner. | |
| 86 | */ | |
| d62a17ae | 87 | extern void bgp_adjust_routeadv(struct peer *); |
| cb1faec9 | 88 | |
| 3012671f | 89 | #include "hook.h" |
| d62a17ae | 90 | DECLARE_HOOK(peer_backward_transition, (struct peer * peer), (peer)) |
| 91 | DECLARE_HOOK(peer_established, (struct peer * peer), (peer)) | |
| 3012671f | 92 | |
| 00d252cb | 93 | #endif /* _QUAGGA_BGP_FSM_H */ |