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1 /* BGP-4 Finite State Machine
2 From RFC1771 [A Border Gateway Protocol 4 (BGP-4)]
3 Copyright (C) 1998 Kunihiro Ishiguro
5 This file is part of GNU Zebra.
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
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.
17 You should have received a copy of the GNU General Public License
18 along with GNU Zebra; see the file COPYING. If not, write to the Free
19 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22 #ifndef _QUAGGA_BGP_FSM_H
23 #define _QUAGGA_BGP_FSM_H
25 /* Macro for BGP read, write and timer thread. */
26 #define BGP_READ_ON(T,F,V) \
28 if (!(T) && (peer->status != Deleted)) \
29 THREAD_READ_ON(master,T,F,peer,V); \
32 #define BGP_READ_OFF(T) \
38 #define BGP_WRITE_ON(T,F,V) \
40 if (!(T) && (peer->status != Deleted)) \
41 THREAD_WRITE_ON(master,(T),(F),peer,(V)); \
44 #define BGP_PEER_WRITE_ON(T,F,V, peer) \
46 if (!(T) && ((peer)->status != Deleted)) \
47 THREAD_WRITE_ON(master,(T),(F),(peer),(V)); \
50 #define BGP_WRITE_OFF(T) \
53 THREAD_WRITE_OFF(T); \
56 #define BGP_TIMER_ON(T,F,V) \
58 if (!(T) && (peer->status != Deleted)) \
59 THREAD_TIMER_ON(master,(T),(F),peer,(V)); \
62 #define BGP_TIMER_OFF(T) \
65 THREAD_TIMER_OFF(T); \
68 #define BGP_EVENT_ADD(P,E) \
70 if ((P)->status != Deleted) \
71 thread_add_event (master, bgp_event, (P), (E)); \
74 #define BGP_EVENT_FLUSH(P) \
77 thread_cancel_event (master, (P)); \
80 #define BGP_MSEC_JITTER 10
83 extern void bgp_fsm_nht_update(struct peer
*, int valid
);
84 extern int bgp_event (struct thread
*);
85 extern int bgp_event_update (struct peer
*, int event
);
86 extern int bgp_stop (struct peer
*peer
);
87 extern void bgp_timer_set (struct peer
*);
88 extern int bgp_routeadv_timer (struct thread
*);
89 extern void bgp_fsm_change_status (struct peer
*peer
, int status
);
90 extern const char *peer_down_str
[];
91 extern void bgp_update_delay_end (struct bgp
*);
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
*);
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.
101 extern void bgp_start_routeadv (struct bgp
*);
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.
110 extern void bgp_adjust_routeadv (struct peer
*);
112 #endif /* _QUAGGA_BGP_FSM_H */