X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fnet.h;h=a4346445dffc3b73773bc9b659ef7761d1eba2e8;hb=42d2dff33306beae8ddbd9cc991ad80f135950a6;hp=845fd7585ce5806166690d1c51fff0b6098da396;hpb=06a4a8c153407b690a3ce3f0e7fdaa8568ccb1a3;p=tinc diff --git a/src/net.h b/src/net.h index 845fd758..a4346445 100644 --- a/src/net.h +++ b/src/net.h @@ -1,7 +1,10 @@ +#ifndef TINC_NET_H +#define TINC_NET_H + /* net.h -- header for net.c Copyright (C) 1998-2005 Ivo Timmermans - 2000-2014 Guus Sliepen + 2000-2016 Guus Sliepen 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 @@ -18,9 +21,6 @@ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ -#ifndef __TINC_NET_H__ -#define __TINC_NET_H__ - #include "ipv6.h" #include "cipher.h" #include "digest.h" @@ -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 + dstid + padding + HMAC + compressor overhead */ +#define MAXSIZE (MTU + 4 + sizeof(node_id_t) + 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) @@ -52,7 +52,12 @@ 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; +typedef uint32_t seqno_t; #define AF_UNKNOWN 255 @@ -80,10 +85,16 @@ typedef union sockaddr_t { #define SALEN(s) (s.sa_family==AF_INET?sizeof(struct sockaddr_in):sizeof(struct sockaddr_in6)) #endif +#define SEQNO(x) ((x)->data + (x)->offset - 4) +#define SRCID(x) ((node_id_t *)((x)->data + (x)->offset - 6)) +#define DSTID(x) ((node_id_t *)((x)->data + (x)->offset - 12)) +#define DATA(x) ((x)->data + (x)->offset) +#define DEFAULT_PACKET_OFFSET 12 + typedef struct vpn_packet_t { - length_t len; /* the actual number of bytes in the `data' field */ + length_t len; /* The actual number of valid bytes in the `data' field (including seqno or dstid/srcid) */ + length_t offset; /* Offset in the buffer where the packet data starts (righter after seqno or dstid/srcid) */ int priority; /* priority or TOS */ - uint32_t seqno; /* 32 bits sequence number (network byte order of course) */ uint8_t data[MAXSIZE]; } vpn_packet_t; @@ -104,6 +115,7 @@ typedef struct listen_socket_t { io_t udp; sockaddr_t sa; bool bindto; + int priority; } listen_socket_t; #include "conf.h" @@ -114,8 +126,9 @@ typedef struct outgoing_t { int timeout; splay_tree_t *config_tree; struct config_t *cfg; - struct addrinfo *ai; + struct addrinfo *ai; // addresses from config files struct addrinfo *aip; + struct addrinfo *kai; // addresses known via other online nodes (use free_known_addresses()) timeout_t ev; } outgoing_t; @@ -126,7 +139,14 @@ extern int seconds_till_retry; extern int addressfamily; extern unsigned replaywin; extern bool localdiscovery; -extern sockaddr_t localdiscovery_address; + +extern bool udp_discovery; +extern int udp_discovery_keepalive_interval; +extern int udp_discovery_interval; +extern int udp_discovery_timeout; + +extern int mtu_info_interval; +extern int udp_info_interval; extern listen_socket_t listen_socket[MAXSOCKETS]; extern int listen_sockets; @@ -137,7 +157,8 @@ 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; @@ -164,44 +185,44 @@ extern char *scriptextension; #include "connection.h" #include "node.h" -extern void retry_outgoing(outgoing_t *); -extern void handle_incoming_vpn_data(void *, int); -extern void finish_connecting(struct connection_t *); -extern bool do_outgoing_connection(struct outgoing_t *); -extern void handle_new_meta_connection(void *, int); -extern void handle_new_unix_connection(void *, int); -extern int setup_listen_socket(const sockaddr_t *); -extern int setup_vpn_in_socket(const sockaddr_t *); -extern bool send_sptps_data(void *handle, uint8_t type, const char *data, size_t len); -extern bool receive_sptps_record(void *handle, uint8_t type, const char *data, uint16_t len); -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 void retry_outgoing(outgoing_t *outgoing); +extern void handle_incoming_vpn_data(void *data, int flags); +extern void finish_connecting(struct connection_t *c); +extern bool do_outgoing_connection(struct outgoing_t *outgoing); +extern void handle_new_meta_connection(void *data, int flags); +extern void handle_new_unix_connection(void *data, int flags); +extern int setup_listen_socket(const sockaddr_t *sa); +extern int setup_vpn_in_socket(const sockaddr_t *sa); +extern bool send_sptps_data(node_t *to, node_t *from, int type, const void *data, size_t len); +extern bool receive_sptps_record(void *handle, uint8_t type, const void *data, uint16_t len); +extern void send_packet(struct node_t *n, vpn_packet_t *packet); +extern void receive_tcppacket(struct connection_t *c, const char *buffer, int length); +extern bool receive_tcppacket_sptps(struct connection_t *c, const char *buffer, int length); +extern void broadcast_packet(const struct node_t *n, vpn_packet_t *packet); 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 *); +extern void setup_outgoing_connection(struct outgoing_t *outgoing, bool verbose); extern void try_outgoing_connections(void); extern void close_network_connections(void); extern int main_loop(void); -extern void terminate_connection(struct connection_t *, bool); -extern bool node_read_ecdsa_public_key(struct node_t *); -extern bool read_ecdsa_public_key(struct connection_t *); -extern bool read_rsa_public_key(struct connection_t *); -extern void send_mtu_probe(struct node_t *); -extern void handle_device_data(void *, int); -extern void handle_meta_connection_data(struct connection_t *); +extern void terminate_connection(struct connection_t *c, bool report); +extern bool node_read_ecdsa_public_key(struct node_t *n); +extern bool read_ecdsa_public_key(struct connection_t *c); +extern bool read_rsa_public_key(struct connection_t *c); +extern void handle_device_data(void *data, int flags); +extern void handle_meta_connection_data(struct connection_t *c); extern void regenerate_key(void); extern void purge(void); extern void retry(void); extern int reload_configuration(void); -extern void load_all_subnets(void); extern void load_all_nodes(void); +extern void try_tx(struct node_t *n, bool mtu); #ifndef HAVE_MINGW #define closesocket(s) close(s) -#else -extern CRITICAL_SECTION mutex; #endif -#endif /* __TINC_NET_H__ */ +#endif