bfce56d473
In addition to the remote address, each edge now stores the local address from the point of view of the "from" node. This information is then made available to other nodes through a backwards-compatible extension to ADD_EDGE messages. This information can be used in future code to improve packet routing.
55 lines
2 KiB
C
55 lines
2 KiB
C
/*
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edge.h -- header for edge.c
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Copyright (C) 2001-2012 Guus Sliepen <guus@tinc-vpn.org>,
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2001-2005 Ivo Timmermans
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __TINC_EDGE_H__
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#define __TINC_EDGE_H__
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#include "splay_tree.h"
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#include "connection.h"
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#include "net.h"
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#include "node.h"
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typedef struct edge_t {
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struct node_t *from;
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struct node_t *to;
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sockaddr_t address;
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sockaddr_t local_address;
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uint32_t options; /* options turned on for this edge */
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int weight; /* weight of this edge */
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struct connection_t *connection; /* connection associated with this edge, if available */
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struct edge_t *reverse; /* edge in the opposite direction, if available */
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} edge_t;
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extern splay_tree_t *edge_weight_tree; /* Tree with all known edges sorted on weight */
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extern void init_edges(void);
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extern void exit_edges(void);
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extern edge_t *new_edge(void) __attribute__ ((__malloc__));
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extern void free_edge(edge_t *);
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extern splay_tree_t *new_edge_tree(void) __attribute__ ((__malloc__));
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extern void free_edge_tree(splay_tree_t *);
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extern void edge_add(edge_t *);
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extern void edge_del(edge_t *);
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extern edge_t *lookup_edge(struct node_t *, struct node_t *);
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extern bool dump_edges(struct connection_t *);
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#endif /* __TINC_EDGE_H__ */
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