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This commit is contained in:
Adam Ierymenko 2014-09-25 15:08:29 -07:00
parent 6c87f9f765
commit 050a0ce85d
7 changed files with 106 additions and 108 deletions
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69
node/Multicaster.hpp
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@ -40,13 +40,12 @@
#include "MAC.hpp"
#include "MulticastGroup.hpp"
#include "OutboundMulticast.hpp"
#include "Switch.hpp"
#include "Utils.hpp"
#include "Mutex.hpp"
namespace ZeroTier {
class Topology;
class RuntimeEnvironment;
/**
* Database of known multicast peers within a network
@ -73,8 +72,8 @@ private:
MulticastGroupStatus() : lastGatheredMembers(0) {}
uint64_t lastGatheredMembers; // time we last gathered members
std::vector<MulticastGroupMember> members; // members of this group
std::list<OutboundMulticast> txQueue; // pending outbound multicasts
std::vector<MulticastGroupMember> members; // members of this group
};
public:
@ -82,80 +81,46 @@ public:
~Multicaster();
/**
* Add or update a member in a multicast group
* Add or update a member in a multicast group and send any pending multicasts
*
* @param RR Runtime environment
* @param mg Multicast group
* @param learnedFrom Address from which we learned this member or NULL/0 Address if direct
* @param member New member address
*/
void add(const MulticastGroup &mg,const Address &learnedFrom,const Address &member);
/**
* Erase a member from a multicast group (if present)
*
* @param mg Multicast group
* @param member Member to erase
*/
void erase(const MulticastGroup &mg,const Address &member);
inline void add(const RuntimeEnvironment *RR,const MulticastGroup &mg,const Address &learnedFrom,const Address &member)
{
Mutex::Lock _l(_groups_m);
_add(RR,mg,learnedFrom,member);
}
/**
* Send a multicast
*
* @param RR Runtime environment
* @param nwid Network ID
* @param limit Multicast limit
* @param now Current time
* @param sw Switch to use for sending packets
* @param self This node's address
* @param mg Multicast group
* @param from Source Ethernet MAC address
* @param etherType Ethernet frame type
* @param data Packet data
* @param len Length of packet data
*/
void send(uint64_t nwid,uint64_t now,const Switch &sw,const Address &self,const MulticastGroup &mg,const MAC &from,unsigned int etherType,const void *data,unsigned int len);
/**
* @param mg Multicast group
* @return Tuple of: time we last gathered members (or 0 for never) and number of known members
*/
inline std::pair<uint64_t,unsigned int> groupStatus(const MulticastGroup &mg) const
{
Mutex::Lock _l(_groups_m);
std::map< MulticastGroup,MulticastGroupStatus >::const_iterator r(_groups.find(mg));
return ((r != _groups.end()) ? std::pair<uint64_t,unsigned int>(r->second.lastGatheredMembers,r->second.members.size()) : std::pair<uint64_t,unsigned int>(0,0));
}
/**
* Return the number of new members we should want to gather or 0 for none
*
* @param mg Multicast group
* @param now Current time
* @param limit The maximum number we want per multicast group on this network
* @param updateLastGatheredTimeOnNonzeroReturn If true, reset group's last gathered time to 'now' on non-zero return
*/
unsigned int shouldGather(const MulticastGroup &mg,uint64_t now,unsigned int limit,bool updateLastGatheredTimeOnNonzeroReturn);
/**
* Update last gathered members time for a group
*
* @param mg Multicast group
* @param now Current time
*/
inline void gatheringMembersNow(const MulticastGroup &mg,uint64_t now)
{
Mutex::Lock _l(_groups_m);
_groups[mg].lastGatheredMembers = now;
}
void send(const RuntimeEnvironment *RR,uint64_t nwid,unsigned int limit,uint64_t now,const MulticastGroup &mg,const MAC &src,unsigned int etherType,const void *data,unsigned int len);
/**
* Clean up and resort database
*
* @param RR Runtime environment
* @param now Current time
* @param topology Global peer topology
* @param trim Trim lists to a maximum of this many members per multicast group
*/
void clean(uint64_t now,const Topology &topology);
void clean(const RuntimeEnvironment *RR,uint64_t now);
private:
void _add(const RuntimeEnvironment *RR,const MulticastGroup &mg,const Address &learnedFrom,const Address &member);
unsigned int _want(const MulticastGroup &mg,MulticastGroupStatus &gs,uint64_t now,unsigned int limit);
std::map< MulticastGroup,MulticastGroupStatus > _groups;
Mutex _groups_m;
};