mirror of https://github.com/ntop/n2n.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
176 lines
7.7 KiB
176 lines
7.7 KiB
/**
|
|
* (C) 2007-21 - ntop.org and contributors
|
|
*
|
|
* 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 3 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 see see <http://www.gnu.org/licenses/>
|
|
*
|
|
*/
|
|
|
|
/* N2N packet header indicators. */
|
|
#define MSG_TYPE_REGISTER 1
|
|
#define MSG_TYPE_DEREGISTER 2
|
|
#define MSG_TYPE_PACKET 3
|
|
#define MSG_TYPE_REGISTER_ACK 4
|
|
#define MSG_TYPE_REGISTER_SUPER 5
|
|
#define MSG_TYPE_UNREGISTER_SUPER 6
|
|
#define MSG_TYPE_REGISTER_SUPER_ACK 7
|
|
#define MSG_TYPE_REGISTER_SUPER_NAK 8
|
|
#define MSG_TYPE_FEDERATION 9
|
|
#define MSG_TYPE_PEER_INFO 10
|
|
#define MSG_TYPE_QUERY_PEER 11
|
|
#define MSG_TYPE_MAX_TYPE 11
|
|
|
|
/* Max available space to add supernodes' informations (sockets and MACs) in REGISTER_SUPER_ACK
|
|
* Field sizes of REGISTER_SUPER_ACK as used in encode/decode fucntions in src/wire.c
|
|
*/
|
|
#define REG_SUPER_ACK_PAYLOAD_SPACE (DEFAULT_MTU - (sizeof(n2n_common_t) + sizeof(n2n_REGISTER_SUPER_ACK_t)))
|
|
|
|
/* Space needed to store socket and MAC address of a supernode */
|
|
#define REG_SUPER_ACK_PAYLOAD_ENTRY_SIZE (sizeof(n2n_REGISTER_SUPER_ACK_payload_t))
|
|
|
|
#define PURGE_REGISTRATION_FREQUENCY 30
|
|
#define RE_REG_AND_PURGE_FREQUENCY 10
|
|
#define REGISTRATION_TIMEOUT 60
|
|
|
|
#define SOCKET_TIMEOUT_INTERVAL_SECS 10
|
|
#define REGISTER_SUPER_INTERVAL_DFL 20 /* sec, usually UDP NAT entries in a firewall expire after 30 seconds */
|
|
#define SWEEP_TIME 30 /* sec, indicates the value after which we have to sort the hash list of supernodes in edges
|
|
* and when we send out packets to query selection-relevant informations from supernodes. */
|
|
|
|
/* Timeouts used in re_register_and_purge_supernodes. LAST_SEEN_SN_ACTIVE and LAST_SEEN_SN_INACTIVE
|
|
* values should be at least 3*SOCKET_TIMEOUT_INTERVAL_SECS apart. */
|
|
#define LAST_SEEN_SN_ACTIVE 20 /* sec, indicates supernodes that are proven to be active */
|
|
#define LAST_SEEN_SN_INACTIVE 90 /* sec, indicates supernodes that are proven to be inactive: they will be purged */
|
|
#define LAST_SEEN_SN_NEW (LAST_SEEN_SN_INACTIVE - LAST_SEEN_SN_ACTIVE) / 2 /* sec, indicates supernodes with unsure status, must be tested to check if they are active */
|
|
|
|
|
|
#define IFACE_UPDATE_INTERVAL (30) /* sec. How long it usually takes to get an IP lease. */
|
|
#define TRANSOP_TICK_INTERVAL (10) /* sec */
|
|
|
|
#define SORT_COMMUNITIES_INTERVAL 90 /* sec. until supernode sorts communities' hash list again */
|
|
|
|
#define ETH_FRAMESIZE 14
|
|
#define IP4_SRCOFFSET 12
|
|
#define IP4_DSTOFFSET 16
|
|
#define IP4_MIN_SIZE 20
|
|
#define UDP_SIZE 8
|
|
|
|
/* parameters for replay protection */
|
|
#define TIME_STAMP_FRAME 0x0000001000000000LL /* clocks of different computers are allowed +/- 16 seconds to be off */
|
|
#define TIME_STAMP_JITTER 0x0000000027100000LL /* we allow a packet to arrive 160 ms (== 0x27100 us) before another
|
|
* set to 0x0000000000000000LL if increasing (or equal) time stamps allowed only */
|
|
#define TIME_STAMP_ALLOW_JITTER 1 /* constant for allowing or... */
|
|
#define TIME_STAMP_NO_JITTER 0 /* not allowing jitter to be considered */
|
|
|
|
/* N2N compression indicators. */
|
|
/* Compression is disabled by default for outgoing packets if no cli
|
|
* option is given. All edges are built with decompression support so
|
|
* they are able to understand each other (this applies to lzo only). */
|
|
#define N2N_COMPRESSION_ID_INVALID 0
|
|
#define N2N_COMPRESSION_ID_NONE 1 /* default, see edge_init_conf_defaults(...) in edge_utils.c */
|
|
#define N2N_COMPRESSION_ID_LZO 2 /* set if '-z1' or '-z' cli option is present, see setOption(...) in edge.c */
|
|
#define N2N_COMPRESSION_ID_ZSTD 3 /* set if '-z2' cli option is present, available only if compiled with zstd lib */
|
|
#define ZSTD_COMPRESSION_LEVEL 7 /* 1 (faster) ... 22 (more compression) */
|
|
|
|
/* Federation name and indicators */
|
|
#define FEDERATION_NAME "*Federation"
|
|
enum federation{IS_NO_FEDERATION = 0,IS_FEDERATION = 1};
|
|
|
|
/* (un)purgeable community indicator (supernode) */
|
|
#define COMMUNITY_UNPURGEABLE 0
|
|
#define COMMUNITY_PURGEABLE 1
|
|
|
|
/* (un)purgeable supernode indicator */
|
|
enum sn_purge{SN_PURGEABLE = 0, SN_UNPURGEABLE = 1};
|
|
|
|
/* Header encryption indicators */
|
|
#define HEADER_ENCRYPTION_UNKNOWN 0
|
|
#define HEADER_ENCRYPTION_NONE 1
|
|
#define HEADER_ENCRYPTION_ENABLED 2
|
|
|
|
#define DEFAULT_MTU 1290
|
|
|
|
#define HASH_ADD_PEER(head,add) \
|
|
HASH_ADD(hh,head,mac_addr,sizeof(n2n_mac_t),add)
|
|
#define HASH_FIND_PEER(head,mac,out) \
|
|
HASH_FIND(hh,head,mac,sizeof(n2n_mac_t),out)
|
|
#define N2N_EDGE_SN_HOST_SIZE 48
|
|
#define N2N_EDGE_NUM_SUPERNODES 2
|
|
#define N2N_EDGE_SUP_ATTEMPTS 3 /* Number of failed attmpts before moving on to next supernode. */
|
|
#define N2N_PATHNAME_MAXLEN 256
|
|
#define N2N_EDGE_MGMT_PORT 5644
|
|
#define N2N_SN_MGMT_PORT 5645
|
|
|
|
/* flag used in add_sn_to_list_by_mac_or_sock */
|
|
enum skip_add{SN_ADD = 0, SN_ADD_SKIP = 1, SN_ADD_ADDED = 2};
|
|
|
|
#define N2N_NETMASK_STR_SIZE 16 /* dotted decimal 12 numbers + 3 dots */
|
|
#define N2N_MACNAMSIZ 18 /* AA:BB:CC:DD:EE:FF + NULL*/
|
|
#define N2N_IF_MODE_SIZE 16 /* static | dhcp */
|
|
|
|
#define N2N_EDGE_DEFAULT_DEV_NAME "edge0"
|
|
#define N2N_EDGE_DEFAULT_NETMASK "255.255.255.0" /* default netmask for edge ip address... */
|
|
#define N2N_EDGE_DEFAULT_CIDR_NM 24 /* ... also in cidr format */
|
|
|
|
#define N2N_SN_LPORT_DEFAULT 7654
|
|
#define N2N_SN_PKTBUF_SIZE 2048
|
|
|
|
|
|
/* The way TUNTAP allocated IP. */
|
|
#define TUNTAP_IP_MODE_SN_ASSIGN 0
|
|
#define TUNTAP_IP_MODE_STATIC 1
|
|
#define TUNTAP_IP_MODE_DHCP 2
|
|
|
|
/* Default network segment of the auto ip address service provided by sn. */
|
|
#define N2N_SN_MIN_AUTO_IP_NET_DEFAULT "10.128.0.0"
|
|
#define N2N_SN_MAX_AUTO_IP_NET_DEFAULT "10.255.255.0"
|
|
#define N2N_SN_AUTO_IP_NET_BIT_DEFAULT 24
|
|
|
|
/* ************************************** */
|
|
|
|
#define SUPERNODE_IP "127.0.0.1"
|
|
#define SUPERNODE_PORT 1234
|
|
|
|
/* ************************************** */
|
|
|
|
#define N2N_PKT_VERSION 3
|
|
#define N2N_DEFAULT_TTL 2 /* can be forwarded twice at most */
|
|
#define N2N_COMMUNITY_SIZE 20
|
|
#define N2N_MAC_SIZE 6
|
|
#define N2N_COOKIE_SIZE 4
|
|
#define N2N_DESC_SIZE 16
|
|
#define N2N_PKT_BUF_SIZE 2048
|
|
#define N2N_SOCKBUF_SIZE 64 /* string representation of INET or INET6 sockets */
|
|
|
|
#define N2N_MULTICAST_PORT 1968
|
|
#define N2N_MULTICAST_GROUP "224.0.0.68"
|
|
|
|
#ifdef WIN32
|
|
#define N2N_IFNAMSIZ 64
|
|
#else
|
|
#define N2N_IFNAMSIZ 16 /* 15 chars * NULL */
|
|
#endif
|
|
|
|
#define SN_SELECTION_CRITERION_DATA_TYPE uint32_t
|
|
#define SN_SELECTION_CRITERION_BUF_SIZE 14
|
|
|
|
#define N2N_TRANSFORM_ID_USER_START 64
|
|
#define N2N_TRANSFORM_ID_MAX 65535
|
|
|
|
#ifndef max
|
|
#define max(a, b) ((a < b) ? b : a)
|
|
#endif
|
|
|
|
#ifndef min
|
|
#define min(a, b) ((a > b) ? b : a)
|
|
#endif
|
|
|