2 node.h -- header for node.c
3 Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #ifndef __MESHLINK_NODE_H__
21 #define __MESHLINK_NODE_H__
27 typedef struct node_status_t {
28 unsigned int unused_active:1; /* 1 if active (not used for nodes) */
29 unsigned int validkey:1; /* 1 if we currently have a valid key for him */
30 unsigned int waitingforkey:1; /* 1 if we already sent out a request */
31 unsigned int visited:1; /* 1 if this node has been visited by one of the graph algorithms */
32 unsigned int reachable:1; /* 1 if this node is reachable in the graph */
33 unsigned int indirect:1; /* 1 if this node is not directly reachable by us */
34 unsigned int unused_sptps:1; /* 1 if this node supports SPTPS */
35 unsigned int udp_confirmed:1; /* 1 if the address is one that we received UDP traffic on */
36 unsigned int broadcast:1; /* 1 if the next UDP packet should be broadcast to the local network */
37 unsigned int blacklisted:1; /* 1 if the node is blacklist so we never want to speak with him anymore*/
38 unsigned int unused:22;
41 typedef struct node_t {
42 char *name; /* name of this node */
43 uint32_t options; /* options turned on for this node */
45 struct meshlink_handle *mesh; /* The mesh this node belongs to */
47 int sock; /* Socket to use for outgoing UDP packets */
48 sockaddr_t address; /* his real (internet) ip to send UDP packets to */
49 char *hostname; /* the hostname of its real ip */
52 time_t last_state_change;
55 struct ecdsa *ecdsa; /* His public ECDSA key */
58 int incompression; /* Compressionlevel, 0 = no compression */
59 int outcompression; /* Compressionlevel, 0 = no compression */
62 struct node_t *nexthop; /* nearest node from us to him */
63 struct edge_t *prevedge; /* nearest node from him to us */
64 struct node_t *via; /* next hop for UDP packets */
66 struct splay_tree_t *edge_tree; /* Edges with this node as one of the endpoints */
68 struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */
70 uint32_t sent_seqno; /* Sequence number last sent to this node */
71 uint32_t received_seqno; /* Sequence number last received from this node */
72 uint32_t received; /* Total valid packets received from this node */
73 uint32_t prev_received_seqno;
74 uint32_t prev_received;
75 unsigned char* late; /* Bitfield marking late packets */
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 */
82 struct timeval probe_time; /* Time the last probe was sent or received */
83 int probe_counter; /* Number of probes received since last burst was sent */
84 float rtt; /* Last measured round trip time */
85 float bandwidth; /* Last measured bandwidth */
86 float packetloss; /* Last measured packet loss rate */
94 extern void init_nodes(struct meshlink_handle *mesh);
95 extern void exit_nodes(struct meshlink_handle *mesh);
96 extern node_t *new_node(void) __attribute__ ((__malloc__));
97 extern void free_node(node_t *);
98 extern void node_add(struct meshlink_handle *mesh, node_t *);
99 extern void node_del(struct meshlink_handle *mesh, node_t *);
100 extern node_t *lookup_node(struct meshlink_handle *mesh, char *);
101 extern node_t *lookup_node_udp(struct meshlink_handle *mesh, const sockaddr_t *);
102 extern void update_node_udp(struct meshlink_handle *mesh, node_t *, const sockaddr_t *);
104 #endif /* __MESHLINK_NODE_H__ */