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/* BGP Peer Index -- header
* Copyright (C) 2009 Chris Hall (GMCH), Highwayman
*
* 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 GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef _QUAGGA_BGP_PEER_INDEX_H
#define _QUAGGA_BGP_PEER_INDEX_H
#include "bgpd/bgp_common.h"
#include "lib/sockunion.h"
/*==============================================================================
* The Peer Index maps:
*
* * IP address (name of peer)
* * peer_id (ordinal of peer)
*
* To the bgp_peer_index_entry.
*
* The bgp_peer_index entry contains enough to allow connections to be accepted
* (or not) completely asynchronously with both the Routeing and the BGP
* Engines... so there need never be a time when a connection is not accepted,
* unless the peer is administratively disabled.
*
* When a BGP session is enabled, it will check to see if an accepted
* connection is pending, and adopt it if it is.
*/
typedef struct bgp_peer_index_entry* bgp_peer_index_entry ;
typedef unsigned bgp_peer_id_t ;
struct bgp_peer_index_entry
{
bgp_peer_index_entry next_free ; /* for list of free peer_id's */
/* points to self if entry is in use */
bgp_peer_id_t id ; /* maps IP address to peer_id */
bgp_peer peer ; /* NULL if entry is not in use */
sockunion_t su ; /* The "name". */
//bgp_connection_options_t opts[1] ; /* for accept() */
//
//int sock ; /* if accepted */
//bgp_connection_options_t opts_set[1] ; /* if accepted */
//qtimer discard ; /* in case not used, promptly */
} ;
enum { bgp_peer_id_null = 0 } ; /* no peer can have id == 0 */
/*==============================================================================
* Functions
*/
extern void bgp_peer_index_init(void* parent) ;
extern void bgp_peer_index_init_r(void) ;
extern void bgp_peer_index_finish(void) ;
extern void bgp_peer_index_register(bgp_peer peer, union sockunion* su) ;
extern void bgp_peer_index_deregister(bgp_peer peer, union sockunion* su) ;
extern bgp_peer bgp_peer_index_seek(sockunion su) ;
extern bgp_peer_index_entry bgp_peer_index_seek_entry(sockunion su) ;
extern void bgp_peer_index_set_session(bgp_peer peer, bgp_session session) ;
extern bgp_connection bgp_peer_index_seek_accept(sockunion su, bool* p_found) ;
#endif /* _QUAGGA_BGP_PEER_INDEX_H */
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