/*
node.h -- header for node.c
- Copyright (C) 2001 Guus Sliepen <guus@sliepen.warande.net>,
- 2001 Ivo Timmermans <itimmermans@bigfoot.com>
+ 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
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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: node.h,v 1.1.2.4 2001/10/10 20:35:10 guus Exp $
+ 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_NODE_H__
#define __TINC_NODE_H__
-#include <avl_tree.h>
+#include "avl_tree.h"
+#include "connection.h"
+#include "event.h"
+#include "subnet.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 unused_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:26;
+} node_status_t;
typedef struct node_t {
- char *name; /* name of this connection */
- int protocol_version; /* used protocol */
- long int options; /* options turned on for this connection */
+ char *name; /* name of this node */
+ uint32_t options; /* options turned on for this node */
+
+ int sock; /* Socket to use for outgoing UDP packets */
+ 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_req_key;
+
+ const EVP_CIPHER *incipher; /* Cipher type for UDP packets received from him */
+ char *inkey; /* Cipher key and iv */
+ int inkeylength; /* Cipher key and iv length */
+ EVP_CIPHER_CTX inctx; /* Cipher context */
+
+ const EVP_CIPHER *outcipher; /* Cipher type for UDP packets sent to him*/
+ char *outkey; /* Cipher key and iv */
+ int outkeylength; /* Cipher key and iv length */
+ EVP_CIPHER_CTX outctx; /* Cipher context */
+
+ const EVP_MD *indigest; /* Digest type for MAC of packets received from him */
+ int inmaclength; /* Length of MAC */
- ipv4_t address; /* his real (internet) ip to send UDP packets to */
- short unsigned int port; /* port number of UDP connection */
- char *hostname; /* the hostname of its real ip */
+ const EVP_MD *outdigest; /* Digest type for MAC of packets sent to him*/
+ int outmaclength; /* Length of MAC */
- EVP_CIPHER *cipher; /* Cipher type for UDP packets */
- char *key; /* Cipher key and iv */
- int keylength; /* Cipher key and iv length*/
+ int incompression; /* Compressionlevel, 0 = no compression */
+ int outcompression; /* Compressionlevel, 0 = no compression */
- list_t *queue; /* Queue for packets awaiting to be encrypted */
+ 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 */
- struct node_t *nexthop; /* nearest meta-hop from us to him */
- struct node_t *prevhop; /* nearest meta-hop from him to us */
- struct node_t *via; /* next hop for UDP packets */
-
- avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */
+ avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */
- struct config_t *config; /* Pointer to configuration tree belonging to this node */
+ avl_tree_t *edge_tree; /* Edges with this node as one of the endpoints */
+
+ struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */
+
+ uint32_t sent_seqno; /* Sequence number last sent to this node */
+ uint32_t received_seqno; /* Sequence number last received from this node */
+ uint32_t farfuture; /* Packets in a row that have arrived from the far future */
+ unsigned char* late; /* Bitfield marking late packets */
+
+ length_t mtu; /* Maximum size of packets to send to this node */
+ length_t minmtu; /* Probed minimum MTU */
+ length_t maxmtu; /* Probed maximum MTU */
+ int mtuprobes; /* Number of probes */
+ event_t *mtuevent; /* Probe event */
} node_t;
-struct node_t *myself;
+extern struct node_t *myself;
extern avl_tree_t *node_tree;
+extern avl_tree_t *node_udp_tree;
+
+extern void init_nodes(void);
+extern void exit_nodes(void);
+extern node_t *new_node(void) __attribute__ ((__malloc__));
+extern void free_node(node_t *);
+extern void node_add(node_t *);
+extern void node_del(node_t *);
+extern node_t *lookup_node(char *);
+extern node_t *lookup_node_udp(const sockaddr_t *);
+extern void update_node_udp(node_t *, const sockaddr_t *);
+extern void dump_nodes(void);
-#endif /* __TINC_NODE_H__ */
+#endif /* __TINC_NODE_H__ */
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