+#ifndef MESHLINK_NODE_H
+#define MESHLINK_NODE_H
+
/*
node.h -- header for node.c
- Copyright (C) 2014 Guus Sliepen <guus@meshlink.io>
+ Copyright (C) 2014, 2017 Guus Sliepen <guus@meshlink.io>
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
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#ifndef __MESHLINK_NODE_H__
-#define __MESHLINK_NODE_H__
-
#include "event.h"
#include "sockaddr.h"
#include "sptps.h"
+#include "utcp/utcp.h"
+#include "submesh.h"
typedef struct node_status_t {
- unsigned int unused_active:1; /* 1 if active (not used for nodes) */
- unsigned int validkey:1; /* 1 if we currently have a valid key for him */
- unsigned int waitingforkey:1; /* 1 if we already sent out a request */
- unsigned int visited:1; /* 1 if this node has been visited by one of the graph algorithms */
- unsigned int reachable:1; /* 1 if this node is reachable in the graph */
- unsigned int indirect:1; /* 1 if this node is not directly reachable by us */
- unsigned int unused_sptps:1; /* 1 if this node supports SPTPS */
- unsigned int udp_confirmed:1; /* 1 if the address is one that we received UDP traffic on */
- unsigned int broadcast:1; /* 1 if the next UDP packet should be broadcast to the local network */
- unsigned int blacklisted:1; /* 1 if the node is blacklist so we never want to speak with him anymore*/
- unsigned int unused:22;
+ uint16_t validkey: 1; /* 1 if we currently have a valid key for him */
+ uint16_t waitingforkey: 1; /* 1 if we already sent out a request */
+ uint16_t visited: 1; /* 1 if this node has been visited by one of the graph algorithms */
+ uint16_t reachable: 1; /* 1 if this node is reachable in the graph */
+ uint16_t udp_confirmed: 1; /* 1 if the address is one that we received UDP traffic on */
+ uint16_t broadcast: 1; /* 1 if the next UDP packet should be broadcast to the local network */
+ uint16_t blacklisted: 1; /* 1 if the node is blacklist so we never want to speak with him anymore */
+ uint16_t destroyed: 1; /* 1 if the node is being destroyed, deallocate channels when any callback is triggered */
+ uint16_t duplicate: 1; /* 1 if the node is duplicate, ie. multiple nodes using the same Name are online */
+ uint16_t dirty: 1; /* 1 if the configuration of the node is dirty and needs to be written out */
+ uint16_t want_udp: 1; /* 1 if we want working UDP because we have data to send */
} node_status_t;
+#define MAX_RECENT 5
+
typedef struct node_t {
+ // Public member variables
char *name; /* name of this node */
- uint32_t options; /* options turned on for this node */
+ void *priv;
- struct meshlink_handle *mesh; /* The mesh this node belongs to */
+ // Private member variables
+ node_status_t status;
+ uint16_t minmtu; /* Probed minimum MTU */
+ dev_class_t devclass;
+ // Used for packet I/O
int sock; /* Socket to use for outgoing UDP packets */
+ uint32_t session_id; /* Unique ID for this node's currently running process */
+ sptps_t sptps;
sockaddr_t address; /* his real (internet) ip to send UDP packets to */
- char *hostname; /* the hostname of its real ip */
- node_status_t status;
- time_t last_state_change;
- time_t last_req_key;
+ struct utcp *utcp;
- struct ecdsa *ecdsa; /* His public ECDSA key */
- sptps_t sptps;
+ // Traffic counters
+ uint64_t in_packets;
+ uint64_t in_bytes;
+ uint64_t out_packets;
+ uint64_t out_bytes;
- int incompression; /* Compressionlevel, 0 = no compression */
- int outcompression; /* Compressionlevel, 0 = no compression */
+ // MTU probes
+ timeout_t mtutimeout; /* Probe event */
+ int mtuprobes; /* Number of probes */
+ uint16_t mtu; /* Maximum size of packets to send to this node */
+ uint16_t maxmtu; /* Probed maximum MTU */
- int distance;
- struct node_t *nexthop; /* nearest node from us to him */
- struct edge_t *prevedge; /* nearest node from him to us */
- struct node_t *via; /* next hop for UDP packets */
+ // Used for meta-connection I/O, timeouts
+ struct meshlink_handle *mesh; /* The mesh this node belongs to */
+ struct submesh_t *submesh; /* Nodes Sub-Mesh Handle*/
+
+ time_t last_req_key;
- struct splay_tree_t *edge_tree; /* Edges with this node as one of the endpoints */
+ struct ecdsa *ecdsa; /* His public ECDSA key */
struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */
+ time_t last_connect_try;
+ time_t last_successfull_connection;
- uint32_t sent_seqno; /* Sequence number last sent to this node */
- uint32_t received_seqno; /* Sequence number last received from this node */
- uint32_t received; /* Total valid packets received from this node */
- uint32_t prev_received_seqno;
- uint32_t prev_received;
- unsigned char* late; /* Bitfield marking late packets */
+ char *canonical_address; /* The canonical address of this node, if known */
+ sockaddr_t recent[MAX_RECENT]; /* Recently seen addresses */
- uint16_t mtu; /* Maximum size of packets to send to this node */
- uint16_t minmtu; /* Probed minimum MTU */
- uint16_t maxmtu; /* Probed maximum MTU */
- int mtuprobes; /* Number of probes */
- timeout_t mtutimeout; /* Probe event */
- struct timeval probe_time; /* Time the last probe was sent or received */
- int probe_counter; /* Number of probes received since last burst was sent */
- float rtt; /* Last measured round trip time */
- float bandwidth; /* Last measured bandwidth */
- float packetloss; /* Last measured packet loss rate */
+ // Graph-related member variables
+ time_t last_reachable;
+ time_t last_unreachable;
- uint64_t in_packets;
- uint64_t in_bytes;
- uint64_t out_packets;
- uint64_t out_bytes;
+ int distance;
+ struct node_t *nexthop; /* nearest node from us to him */
+ struct edge_t *prevedge; /* nearest node from him to us */
+
+ struct splay_tree_t *edge_tree; /* Edges with this node as one of the endpoints */
} node_t;
extern void init_nodes(struct meshlink_handle *mesh);
extern void exit_nodes(struct meshlink_handle *mesh);
-extern node_t *new_node(void) __attribute__ ((__malloc__));
-extern void free_node(node_t *);
-extern void node_add(struct meshlink_handle *mesh, node_t *);
-extern void node_del(struct meshlink_handle *mesh, node_t *);
-extern node_t *lookup_node(struct meshlink_handle *mesh, const char *);
-extern node_t *lookup_node_udp(struct meshlink_handle *mesh, const sockaddr_t *);
-extern void update_node_udp(struct meshlink_handle *mesh, node_t *, const sockaddr_t *);
-
-#endif /* __MESHLINK_NODE_H__ */
+extern node_t *new_node(void) __attribute__((__malloc__));
+extern void free_node(node_t *n);
+extern void node_add(struct meshlink_handle *mesh, node_t *n);
+extern void node_del(struct meshlink_handle *mesh, node_t *n);
+extern node_t *lookup_node(struct meshlink_handle *mesh, const char *name) __attribute__((__warn_unused_result__));
+extern node_t *lookup_node_udp(struct meshlink_handle *mesh, const sockaddr_t *sa) __attribute__((__warn_unused_result__));
+extern void update_node_udp(struct meshlink_handle *mesh, node_t *n, const sockaddr_t *sa);
+extern bool node_add_recent_address(struct meshlink_handle *mesh, node_t *n, const sockaddr_t *addr);
+
+#endif
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