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// SPDX-License-Identifier: MIT
/*
Copyright (c) 2007, 2008 by Juliusz Chroboczek
*/
#ifndef BABEL_NEIGHBOUR_H
#define BABEL_NEIGHBOUR_H
struct neighbour {
struct neighbour *next;
/* This is -1 when unknown, so don't make it unsigned */
int hello_seqno;
unsigned char address[16];
unsigned short reach;
unsigned short txcost;
struct timeval hello_time;
struct timeval ihu_time;
unsigned short hello_interval; /* in centiseconds */
unsigned short ihu_interval; /* in centiseconds */
/* Used for RTT estimation. */
/* Absolute time (modulo 2^32) at which the Hello was sent,
according to remote clock. */
unsigned int hello_send_us;
struct timeval hello_rtt_receive_time;
unsigned int rtt;
struct timeval rtt_time;
struct interface *ifp;
};
extern struct neighbour *neighs;
#define FOR_ALL_NEIGHBOURS(_neigh) \
for(_neigh = neighs; _neigh; _neigh = _neigh->next)
int neighbour_valid(struct neighbour *neigh);
void flush_neighbour(struct neighbour *neigh);
struct neighbour *find_neighbour(const unsigned char *address,
struct interface *ifp);
int update_neighbour(struct neighbour *neigh, int hello, int hello_interval);
unsigned check_neighbours(void);
unsigned neighbour_txcost(struct neighbour *neigh);
unsigned neighbour_rxcost(struct neighbour *neigh);
unsigned neighbour_rttcost(struct neighbour *neigh);
unsigned neighbour_cost(struct neighbour *neigh);
int valid_rtt(struct neighbour *neigh);
#endif /* BABEL_NEIGHBOUR_H */
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