-/*
- net.h -- header for net.c
- Copyright (C) 1998-2002 Ivo Timmermans <zarq@iname.com>
- 2000-2002 Guus Sliepen <guus@sliepen.warande.net>
-
- 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
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- 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: net.h,v 1.1 2002/04/28 12:46:26 zarq Exp $
-*/
-
-#ifndef __TINC_NET_H__
-#define __TINC_NET_H__
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <sys/time.h>
-
-#include "config.h"
-
-#ifdef ENABLE_JUMBOGRAMS
- #define MTU 9014 /* 9000 bytes payload + 14 bytes ethernet header */
- #define MAXSIZE 9100 /* MTU + header (seqno) and trailer (CBC padding and HMAC) */
- #define MAXBUFSIZE 9100 /* Must support TCP packets of length 9000. */
-#else
- #define MTU 1514 /* 1500 bytes payload + 14 bytes ethernet header */
- #define MAXSIZE 1600 /* MTU + header (seqno) and trailer (CBC padding and HMAC) */
- #define MAXBUFSIZE 2100 /* Quite large but needed for support of keys up to 8192 bits. */
-#endif
-
-#define MAXSOCKETS 128 /* Overkill... */
-
-#define MAXQUEUELENGTH 8
-
-typedef struct mac_t
-{
- unsigned char x[6];
-} mac_t;
-
-typedef struct ipv4_t
-{
- unsigned char x[4];
-} ipv4_t;
-
-typedef struct ip_mask_t {
- ipv4_t address;
- ipv4_t mask;
-} ip_mask_t;
-
-typedef struct ipv6_t
-{
- unsigned short x[8];
-} ipv6_t;
-
-typedef unsigned short port_t;
-
-typedef short length_t;
-
-typedef union {
- struct sockaddr sa;
- struct sockaddr_in in;
- struct sockaddr_in6 in6;
-} sockaddr_t;
-
-#ifdef SA_LEN
-#define SALEN(s) SA_LEN(&s)
-#else
-#define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6))
-#endif
-
-typedef struct vpn_packet_t {
- length_t len; /* the actual number of bytes in the `data' field */
- int priority; /* priority or TOS */
- unsigned int seqno; /* 32 bits sequence number (network byte order of course) */
- unsigned char data[MAXSIZE];
-} vpn_packet_t;
-
-typedef struct queue_element_t {
- void *packet;
- struct queue_element_t *prev;
- struct queue_element_t *next;
-} queue_element_t;
-
-typedef struct packet_queue_t {
- queue_element_t *head;
- queue_element_t *tail;
-} packet_queue_t;
-
-typedef struct outgoing_t {
- char *name;
- int timeout;
- struct config_t *cfg;
- struct addrinfo *ai;
- struct addrinfo *aip;
-} outgoing_t;
-
-typedef struct listen_socket_t {
- int tcp;
- int udp;
- sockaddr_t sa;
-} listen_socket_t;
-
-extern int maxtimeout;
-extern int seconds_till_retry;
-extern int addressfamily;
-
-extern char *request_name[];
-extern char *status_text[];
-
-#include "connection.h" /* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */
-
-extern listen_socket_t listen_socket[MAXSOCKETS];
-extern int listen_sockets;
-extern int keyexpires;
-extern int keylifetime;
-extern int do_prune;
-extern int do_purge;
-extern char *myport;
-extern time_t now;
-
-extern void retry_outgoing(outgoing_t *);
-extern void handle_incoming_vpn_data(int);
-extern void finish_connecting(connection_t *);
-extern void do_outgoing_connection(connection_t *);
-extern int handle_new_meta_connection(int);
-extern int setup_listen_socket(sockaddr_t *);
-extern int setup_vpn_in_socket(sockaddr_t *);
-extern void send_packet(struct node_t *, vpn_packet_t *);
-extern void receive_packet(struct node_t *, vpn_packet_t *);
-extern void receive_tcppacket(struct connection_t *, char *, int);
-extern void broadcast_packet(struct node_t *, vpn_packet_t *);
-extern int setup_network_connections(void);
-extern void setup_outgoing_connection(struct outgoing_t *);
-extern void try_outgoing_connections(void);
-extern void close_network_connections(void);
-extern void main_loop(void);
-extern void terminate_connection(connection_t *, int);
-extern void flush_queue(struct node_t *);
-extern int read_rsa_public_key(struct connection_t *);
-
-#endif /* __TINC_NET_H__ */