2 net.h -- header for net.c
3 Copyright (C) 1998-2002 Ivo Timmermans <zarq@iname.com>
4 2000-2002 Guus Sliepen <guus@sliepen.warande.net>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: net.h,v 1.9.4.38 2002/02/10 21:57:54 guus Exp $
23 #ifndef __TINC_NET_H__
24 #define __TINC_NET_H__
30 #define MTU 1514 /* 1500 bytes payload + 14 bytes ethernet header */
31 #define MAXSIZE 1600 /* MTU + header (seqno) and trailer (CBC padding and HMAC) */
33 #define MAXBUFSIZE 2048 /* Probably way too much, but it must fit every possible request. */
40 typedef unsigned long ipv4_t;
42 typedef struct ip_mask_t {
52 typedef unsigned short port_t;
54 typedef short length_t;
56 typedef struct vpn_packet_t {
57 length_t len; /* the actual number of bytes in the `data' field */
58 unsigned int seqno; /* 32 bits sequence number (network byte order of course) */
59 unsigned char data[MAXSIZE];
62 typedef struct queue_element_t {
64 struct queue_element_t *prev;
65 struct queue_element_t *next;
68 typedef struct packet_queue_t {
69 queue_element_t *head;
70 queue_element_t *tail;
73 typedef struct outgoing_t {
78 extern int maxtimeout;
79 extern int seconds_till_retry;
81 extern char *request_name[];
82 extern char *status_text[];
84 #include "connection.h" /* Yes, very strange placement indeed, but otherwise the typedefs get all tangled up */
86 extern void send_packet(struct node_t *, vpn_packet_t *);
87 extern void receive_packet(struct node_t *, vpn_packet_t *);
88 extern void receive_tcppacket(struct connection_t *, char *, int);
89 extern void broadcast_packet(struct node_t *, vpn_packet_t *);
90 extern int setup_network_connections(void);
91 extern void setup_outgoing_connection(struct outgoing_t *);
92 extern void try_outgoing_connections(void);
93 extern void close_network_connections(void);
94 extern void main_loop(void);
95 extern void terminate_connection(connection_t *, int);
96 extern void flush_queue(struct node_t *);
97 extern int read_rsa_public_key(struct connection_t *);
99 #endif /* __TINC_NET_H__ */