tinc/src/edge.h
thorkill 0cd387fd90 This commit implements average RTT estimation based on PING-PONG between active TCP connections.
Average RTT can be used to update edge weight and propagate it to the network.
tinc dump edges has been also extended to give the current RTT.
New edge weight will change only if the config has EdgeUpdateInterval set to other value than 0.

- Ignore local configuration for editors
- Extended manpage with informations about EdgeUpdateInterval
- Added clone_edge and fixed potential segfault when b->from not defined
- Compute avg_rtt based on the time values we got back in PONG
- Add avg_rtt on dump edge
- Send current time on PING and return it on PONG
- Changed last_ping_time to struct timeval
- Extended edge_t with avg_rtt
2015-04-11 15:27:28 +02:00

57 lines
2.1 KiB
C

/*
edge.h -- header for edge.c
Copyright (C) 2001-2012 Guus Sliepen <guus@tinc-vpn.org>,
2001-2005 Ivo Timmermans
This program 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 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __TINC_EDGE_H__
#define __TINC_EDGE_H__
#include "splay_tree.h"
#include "connection.h"
#include "net.h"
#include "node.h"
typedef struct edge_t {
struct node_t *from;
struct node_t *to;
sockaddr_t address;
sockaddr_t local_address;
uint32_t options; /* options turned on for this edge */
int weight; /* weight of this edge */
int avg_rtt; /* average RTT */
struct connection_t *connection; /* connection associated with this edge, if available */
struct edge_t *reverse; /* edge in the opposite direction, if available */
} edge_t;
extern splay_tree_t *edge_weight_tree; /* Tree with all known edges sorted on weight */
extern void init_edges(void);
extern void exit_edges(void);
extern edge_t *new_edge(void) __attribute__ ((__malloc__));
extern void free_edge(edge_t *);
extern splay_tree_t *new_edge_tree(void) __attribute__ ((__malloc__));
extern void free_edge_tree(splay_tree_t *);
extern void edge_add(edge_t *);
extern void edge_del(edge_t *);
extern edge_t *lookup_edge(struct node_t *, struct node_t *);
extern edge_t *clone_edge(edge_t *);
extern bool dump_edges(struct connection_t *);
#endif /* __TINC_EDGE_H__ */