1 #ifndef MESHLINK_NODE_H
2 #define MESHLINK_NODE_H
5 node.h -- header for node.c
6 Copyright (C) 2014, 2017 Guus Sliepen <guus@meshlink.io>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
26 #include "utcp/utcp.h"
28 typedef struct node_status_t {
29 unsigned int unused_active: 1; /* 1 if active (not used for nodes) */
30 unsigned int validkey: 1; /* 1 if we currently have a valid key for him */
31 unsigned int waitingforkey: 1; /* 1 if we already sent out a request */
32 unsigned int visited: 1; /* 1 if this node has been visited by one of the graph algorithms */
33 unsigned int reachable: 1; /* 1 if this node is reachable in the graph */
34 unsigned int indirect: 1; /* 1 if this node is not directly reachable by us */
35 unsigned int unused_sptps: 1; /* 1 if this node supports SPTPS */
36 unsigned int udp_confirmed: 1; /* 1 if the address is one that we received UDP traffic on */
37 unsigned int broadcast: 1; /* 1 if the next UDP packet should be broadcast to the local network */
38 unsigned int blacklisted: 1; /* 1 if the node is blacklist so we never want to speak with him anymore */
39 unsigned int destroyed: 1; /* 1 if the node is being destroyed, deallocate channels when any callback is triggered */
40 unsigned int unused: 22;
43 typedef struct node_t {
44 char *name; /* name of this node */
47 uint32_t options; /* options turned on for this node */
50 struct meshlink_handle *mesh; /* The mesh this node belongs to */
52 int sock; /* Socket to use for outgoing UDP packets */
53 sockaddr_t address; /* his real (internet) ip to send UDP packets to */
54 char *hostname; /* the hostname of its real ip */
57 time_t last_state_change;
60 struct ecdsa *ecdsa; /* His public ECDSA key */
63 int incompression; /* Compressionlevel, 0 = no compression */
64 int outcompression; /* Compressionlevel, 0 = no compression */
67 struct node_t *nexthop; /* nearest node from us to him */
68 struct edge_t *prevedge; /* nearest node from him to us */
69 struct node_t *via; /* next hop for UDP packets */
71 struct splay_tree_t *edge_tree; /* Edges with this node as one of the endpoints */
73 struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */
74 time_t last_connect_try;
75 time_t last_successfull_connection;
77 uint16_t mtu; /* Maximum size of packets to send to this node */
78 uint16_t minmtu; /* Probed minimum MTU */
79 uint16_t maxmtu; /* Probed maximum MTU */
80 int mtuprobes; /* Number of probes */
81 timeout_t mtutimeout; /* Probe event */
91 extern void init_nodes(struct meshlink_handle *mesh);
92 extern void exit_nodes(struct meshlink_handle *mesh);
93 extern node_t *new_node(void) __attribute__((__malloc__));
94 extern void free_node(node_t *);
95 extern void node_add(struct meshlink_handle *mesh, node_t *);
96 extern void node_del(struct meshlink_handle *mesh, node_t *);
97 extern node_t *lookup_node(struct meshlink_handle *mesh, const char *);
98 extern node_t *lookup_node_udp(struct meshlink_handle *mesh, const sockaddr_t *);
99 extern void update_node_udp(struct meshlink_handle *mesh, node_t *, const sockaddr_t *);