Prepend source node ID information to UDP datagrams.

[tinc] / src / net.h

diff --git a/src/net.h b/src/net.h
index 0165d1e..adb65f3 100644 (file)
--- a/src/net.h
+++ b/src/net.h
@@ -1,7 +1,7 @@
 /*
     net.h -- header for net.c
     Copyright (C) 1998-2005 Ivo Timmermans
-                  2000-2012 Guus Sliepen <guus@tinc-vpn.org>
+                  2000-2014 Guus Sliepen <guus@tinc-vpn.org>
 
     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
@@ -32,8 +32,8 @@
 #define MTU 1518        /* 1500 bytes payload + 14 bytes ethernet header + 4 bytes VLAN tag */
 #endif
 
-/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + padding + HMAC + compressor overhead */
-#define MAXSIZE (MTU + 4 + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_SIZE + MTU/64 + 20)
+/* MAXSIZE is the maximum size of an encapsulated packet: MTU + seqno + srcid + padding + HMAC + compressor overhead */
+#define MAXSIZE (MTU + 4 + sizeof(node_id_t) + CIPHER_MAX_BLOCK_SIZE + DIGEST_MAX_SIZE + MTU/64 + 20)
 
 /* MAXBUFSIZE is the maximum size of a request: enough for a MAXSIZEd packet or a 8192 bits RSA key */
 #define MAXBUFSIZE ((MAXSIZE > 2048 ? MAXSIZE : 2048) + 128)
@@ -52,6 +52,10 @@ typedef struct ipv6_t {
        uint16_t x[8];
 } ipv6_t;
 
+typedef struct node_id_t {
+       uint8_t x[6];
+} node_id_t;
+
 typedef short length_t;
 
 #define AF_UNKNOWN 255
@@ -83,7 +87,8 @@ typedef union sockaddr_t {
 typedef struct vpn_packet_t {
        length_t len;           /* the actual number of bytes in the `data' field */
        int priority;           /* priority or TOS */
-       uint32_t seqno;         /* 32 bits sequence number (network byte order of course) */
+       node_id_t srcid;        /* node ID of the original sender */
+       uint8_t seqno[4];       /* 32 bits sequence number (network byte order of course) */
        uint8_t data[MAXSIZE];
 } vpn_packet_t;
 
@@ -103,6 +108,7 @@ typedef struct listen_socket_t {
        io_t tcp;
        io_t udp;
        sockaddr_t sa;
+       bool bindto;
 } listen_socket_t;
 
 #include "conf.h"
@@ -132,9 +138,12 @@ extern io_t unix_socket;
 extern int keylifetime;
 extern int udp_rcvbuf;
 extern int udp_sndbuf;
+extern int max_connection_burst;
 extern bool do_prune;
 extern char *myport;
-extern int autoconnect;
+extern bool device_standby;
+extern bool autoconnect;
+extern bool disablebuggypeers;
 extern int contradicting_add_edge;
 extern int contradicting_del_edge;
 extern time_t last_config_check;
@@ -174,6 +183,8 @@ extern void send_packet(struct node_t *, vpn_packet_t *);
 extern void receive_tcppacket(struct connection_t *, const char *, int);
 extern void broadcast_packet(const struct node_t *, vpn_packet_t *);
 extern char *get_name(void);
+extern void device_enable(void);
+extern void device_disable(void);
 extern bool setup_myself_reloadable(void);
 extern bool setup_network(void);
 extern void setup_outgoing_connection(struct outgoing_t *);
@@ -196,8 +207,6 @@ extern void load_all_nodes(void);
 
 #ifndef HAVE_MINGW
 #define closesocket(s) close(s)
-#else
-extern CRITICAL_SECTION mutex;
 #endif
 
 #endif /* __TINC_NET_H__ */