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.
84 lines
2.5 KiB
84 lines
2.5 KiB
/* |
|
* ZeroTier One - Network Virtualization Everywhere |
|
* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/ |
|
* |
|
* 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 <http://www.gnu.org/licenses/>. |
|
* |
|
* -- |
|
* |
|
* You can be released from the requirements of the license by purchasing |
|
* a commercial license. Buying such a license is mandatory as soon as you |
|
* develop commercial closed-source software that incorporates or links |
|
* directly against ZeroTier software without disclosing the source code |
|
* of your own application. |
|
*/ |
|
|
|
#ifndef ZT_NEIGHBORDISCOVERY_HPP |
|
#define ZT_NEIGHBORDISCOVERY_HPP |
|
|
|
#include "../node/Hashtable.hpp" |
|
#include "../node/MAC.hpp" |
|
#include "../node/InetAddress.hpp" |
|
|
|
|
|
#define ZT_ND_QUERY_INTERVAL 2000 |
|
|
|
#define ZT_ND_QUERY_MAX_TTL 5000 |
|
|
|
#define ZT_ND_EXPIRE 600000 |
|
|
|
|
|
namespace ZeroTier { |
|
|
|
class NeighborDiscovery |
|
{ |
|
public: |
|
NeighborDiscovery(); |
|
|
|
/** |
|
* Set a local IP entry that we should respond to Neighbor Requests withPrefix64k |
|
* |
|
* @param mac Our local MAC address |
|
* @param ip Our IPv6 address |
|
*/ |
|
void addLocal(const sockaddr_storage &address, const MAC &mac); |
|
|
|
/** |
|
* Delete a local IP entry or cached Neighbor entry |
|
* |
|
* @param address IPv6 address to remove |
|
*/ |
|
void remove(const sockaddr_storage &address); |
|
|
|
sockaddr_storage processIncomingND(const uint8_t *nd, unsigned int len, const sockaddr_storage &localIp, uint8_t *response, unsigned int &responseLen, MAC &responseDest); |
|
|
|
MAC query(const MAC &localMac, const sockaddr_storage &localIp, const sockaddr_storage &targetIp, uint8_t *query, unsigned int &queryLen, MAC &queryDest); |
|
|
|
private: |
|
struct _NDEntry |
|
{ |
|
_NDEntry() : lastQuerySent(0), lastResponseReceived(0), mac(), local(false) {} |
|
uint64_t lastQuerySent; |
|
uint64_t lastResponseReceived; |
|
MAC mac; |
|
bool local; |
|
}; |
|
|
|
Hashtable<InetAddress, _NDEntry> _cache; |
|
uint64_t _lastCleaned; |
|
}; |
|
|
|
} // namespace ZeroTier |
|
|
|
#endif
|
|
|