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Merge branch 'dev' of http://git.int.zerotier.com/ZeroTier/ZeroTierOne into dev

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This commit is contained in:
Grant Limberg 2016-09-05 16:19:10 -07:00
commit 68a966fa55
10 changed files with 76 additions and 66 deletions
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5
include/ZeroTierOne.h
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@ -1053,11 +1053,6 @@ typedef struct
*/
uint64_t trustedPathId;
/**
* Is path active?
*/
int active;
/**
* Is path preferred?
*/

2
node/Constants.hpp
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@ -264,7 +264,7 @@
/**
* Peers forget paths that have not spoken in this long
*/
#define ZT_PEER_PATH_EXPIRATION ((ZT_PEER_PING_PERIOD * 3) + 3000)
#define ZT_PEER_PATH_EXPIRATION ((ZT_PEER_PING_PERIOD * 4) + 3000)
/**
* Timeout for overall peer activity (measured from last receive)

2
node/Network.cpp
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@ -36,7 +36,7 @@
#include "Peer.hpp"
// Uncomment to make the rules engine dump trace info to stdout
#define ZT_RULES_ENGINE_DEBUGGING 1
//#define ZT_RULES_ENGINE_DEBUGGING 1
namespace ZeroTier {

3
node/Node.cpp
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@ -243,7 +243,7 @@ public:
lastReceiveFromUpstream = std::max(p->lastReceive(),lastReceiveFromUpstream);
} else if (p->activelyTransferringFrames(_now)) {
// Normal nodes get their preferred link kept alive if the node has generated frame traffic recently
p->doPingAndKeepalive(_now,0);
p->doPingAndKeepalive(_now,-1);
}
}
@ -422,7 +422,6 @@ ZT_PeerList *Node::peers() const
memcpy(&(p->paths[p->pathCount].address),&((*path)->address()),sizeof(struct sockaddr_storage));
p->paths[p->pathCount].lastSend = (*path)->lastOut();
p->paths[p->pathCount].lastReceive = (*path)->lastIn();
p->paths[p->pathCount].active = (*path)->alive(_now) ? 1 : 0;
p->paths[p->pathCount].preferred = (*path == bestp) ? 1 : 0;
p->paths[p->pathCount].trustedPathId = RR->topology->getOutboundPathTrust((*path)->address());
++p->pathCount;

10
node/Path.hpp
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@ -152,16 +152,10 @@ public:
inline InetAddress::IpScope ipScope() const { return _ipScope; }
/**
* @return Preference rank, higher == better (will be less than 255)
* @return Preference rank, higher == better
*/
inline unsigned int preferenceRank() const
{
/* First, since the scope enum values in InetAddress.hpp are in order of
* use preference rank, we take that. Then we multiple by two, yielding
* a sequence like 0, 2, 4, 6, etc. Then if it's IPv6 we add one. This
* makes IPv6 addresses of a given scope outrank IPv4 addresses of the
* same scope -- e.g. 1 outranks 0. This makes us prefer IPv6, but not
* if the address scope/class is of a fundamentally lower rank. */
return ( ((unsigned int)_ipScope << 1) | (unsigned int)(_addr.ss_family == AF_INET6) );
}
@ -213,7 +207,7 @@ public:
/**
* @return True if this path needs a heartbeat
*/
inline bool needsHeartbeat(const uint64_t now) const { return ((now - _lastOut) > ZT_PATH_HEARTBEAT_PERIOD); }
inline bool needsHeartbeat(const uint64_t now) const { return ((now - _lastOut) >= ZT_PATH_HEARTBEAT_PERIOD); }
/**
* @return Last time we sent something

83
node/Peer.cpp
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@ -122,10 +122,11 @@ void Peer::received(
{
Mutex::Lock _l(_paths_m);
for(unsigned int p=0;p<_numPaths;++p) {
if (_paths[p].path == path) { // paths are canonicalized so pointer compare is good here
if (_paths[p].path->address() == path->address()) {
_paths[p].lastReceive = now;
_paths[p].path = path; // local address may have changed!
#ifdef ZT_ENABLE_CLUSTER
_paths[p].clusterSuboptimal = suboptimalPath;
_paths[p].clusterWeights = (unsigned int)(!suboptimalPath);
#endif
pathIsConfirmed = true;
break;
@ -133,49 +134,65 @@ void Peer::received(
}
}
if ((!pathIsConfirmed)&&(RR->node->shouldUsePathForZeroTierTraffic(path->localAddress(),path->address()))) {
if ( (!pathIsConfirmed) && (RR->node->shouldUsePathForZeroTierTraffic(path->localAddress(),path->address())) ) {
if (verb == Packet::VERB_OK) {
Mutex::Lock _l(_paths_m);
unsigned int slot = 0;
unsigned int slot;
if (_numPaths < ZT_MAX_PEER_NETWORK_PATHS) {
slot = _numPaths++;
} else {
uint64_t oldest = 0ULL;
unsigned int oldestPath = 0;
// First try to replace the worst within the same address family, if possible
int worstSlot = -1;
uint64_t worstScore = 0xffffffffffffffffULL;
for(unsigned int p=0;p<_numPaths;++p) {
if (_paths[p].lastReceive < oldest) {
oldest = _paths[p].lastReceive;
oldestPath = p;
if (_paths[p].path->address().ss_family == path->address().ss_family) {
const uint64_t s = _pathScore(p);
if (s < worstScore) {
worstScore = s;
worstSlot = (int)p;
}
}
}
if (worstSlot >= 0) {
slot = (unsigned int)worstSlot;
} else {
slot = ZT_MAX_PEER_NETWORK_PATHS - 1;
for(unsigned int p=0;p<_numPaths;++p) {
const uint64_t s = _pathScore(p);
if (s < worstScore) {
worstScore = s;
slot = p;
}
}
}
slot = oldestPath;
}
_paths[slot].path = path;
_paths[slot].lastReceive = now;
_paths[slot].path = path;
#ifdef ZT_ENABLE_CLUSTER
_paths[slot].clusterSuboptimal = suboptimalPath;
_paths[slot].clusterWeights = (unsigned int)(!suboptimalPath);
if (RR->cluster)
RR->cluster->broadcastHavePeer(_id);
#else
_paths[slot].clusterSuboptimal = false;
_paths[slot].clusterWeights = 1;
#endif
} else {
TRACE("got %s via unknown path %s(%s), confirming...",Packet::verbString(verb),_id.address().toString().c_str(),remoteAddr.toString().c_str());
TRACE("got %s via unknown path %s(%s), confirming...",Packet::verbString(verb),_id.address().toString().c_str(),path->address().toString().c_str());
if ( (_vProto >= 5) && ( !((_vMajor == 1)&&(_vMinor == 1)&&(_vRevision == 0)) ) ) {
// Newer than 1.1.0 can use ECHO, which is smaller
Packet outp(_id.address(),RR->identity.address(),Packet::VERB_ECHO);
outp.armor(_key,true);
path->send(RR,outp.data(),outp.size(),now);
} else {
// For backward compatibility we send HELLO to ancient nodes
sendHELLO(path->localAddress(),path->address(),now);
}
}
}
} else if (trustEstablished) {
// Send PUSH_DIRECT_PATHS if hops>0 (relayed) and we have a trust relationship (common network membership)
_pushDirectPaths(path,now);
}
@ -201,17 +218,19 @@ void Peer::setClusterOptimal(const InetAddress &addr)
{
Mutex::Lock _l(_paths_m);
int have = -1;
int opt = -1;
for(unsigned int p=0;p<_numPaths;++p) {
if (_paths[p].path->address() == addr) {
have = (int)p;
opt = (int)p;
break;
}
}
if (have >= 0) {
for(unsigned int p=0;p<_numPaths;++p)
_paths[p].clusterSuboptimal = (p != have);
if (opt >= 0) { // only change anything if we have the optimal path
for(unsigned int p=0;p<_numPaths;++p) {
if (_paths[p].path->address().ss_family == addr.ss_family)
_paths[p].clusterWeights = ((int)p == opt) ? 2 : 0;
}
}
}
@ -282,10 +301,12 @@ bool Peer::doPingAndKeepalive(uint64_t now,int inetAddressFamily)
int bestp = -1;
uint64_t best = 0ULL;
for(unsigned int p=0;p<_numPaths;++p) {
const uint64_t s = _pathScore(p);
if (s >= best) {
best = s;
bestp = (int)p;
if ((inetAddressFamily < 0)||((int)_paths[p].path->address().ss_family == inetAddressFamily)) {
const uint64_t s = _pathScore(p);
if (s >= best) {
best = s;
bestp = (int)p;
}
}
}
@ -325,11 +346,9 @@ bool Peer::resetWithinScope(InetAddress::IpScope scope,uint64_t now)
sendHELLO(_paths[x].path->localAddress(),_paths[x].path->address(),now);
} else {
if (x != y) {
_paths[y].path = _paths[x].path;
_paths[y].lastReceive = _paths[x].lastReceive;
#ifdef ZT_ENABLE_CLUSTER
_paths[y].clusterSuboptimal = _paths[x].clusterSuboptimal;
#endif
_paths[y].path = _paths[x].path;
_paths[y].clusterWeights = _paths[x].clusterWeights;
}
++y;
}
@ -376,11 +395,9 @@ void Peer::clean(uint64_t now)
while (x < np) {
if ((now - _paths[x].lastReceive) <= ZT_PEER_PATH_EXPIRATION) {
if (y != x) {
_paths[y].path = _paths[x].path;
_paths[y].lastReceive = _paths[x].lastReceive;
#ifdef ZT_ENABLE_CLUSTER
_paths[y].clusterSuboptimal = _paths[x].clusterSuboptimal;
#endif
_paths[y].path = _paths[x].path;
_paths[y].clusterWeights = _paths[x].clusterWeights;
}
++y;
}

18
node/Peer.hpp
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@ -121,7 +121,9 @@ public:
bool hasActivePathTo(uint64_t now,const InetAddress &addr) const;
/**
* If we have a confirmed path to this address, mark others as cluster suboptimal
* Set which known path for an address family is optimal
*
* This only modifies paths within the same address family
*
* @param addr Address to make exclusive
*/
@ -161,8 +163,8 @@ public:
* Send pings or keepalives depending on configured timeouts
*
* @param now Current time
* @param inetAddressFamily Keep this address family alive, or 0 to simply pick current best ignoring family
* @return True if we have at least one direct path
* @param inetAddressFamily Keep this address family alive, or -1 for any
* @return True if we have at least one direct path of the given family (or any if family is -1)
*/
bool doPingAndKeepalive(uint64_t now,int inetAddressFamily);
@ -285,7 +287,7 @@ public:
inline bool hasClusterOptimalPath(uint64_t now) const
{
for(unsigned int p=0,np=_numPaths;p<np;++p) {
if ( (_paths[p].path->alive(now)) && (!_paths[p].clusterSuboptimal) )
if ( (_paths[p].path->alive(now)) && ((_paths[p].clusterWeights & 1) != 0) )
return true;
}
return false;
@ -365,7 +367,9 @@ private:
inline uint64_t _pathScore(const unsigned int p) const
{
return ( (_paths[p].path->lastIn() + (_paths[p].path->preferenceRank() * (ZT_PEER_PING_PERIOD / ZT_PATH_MAX_PREFERENCE_RANK))) - ((ZT_PEER_PING_PERIOD * 10) * (uint64_t)_paths[p].clusterSuboptimal) );
return ( _paths[p].lastReceive +
(uint64_t)(_paths[p].path->preferenceRank() * (ZT_PEER_PING_PERIOD / ZT_PATH_MAX_PREFERENCE_RANK)) +
(uint64_t)(_paths[p].clusterWeights * ZT_PEER_PING_PERIOD) );
}
unsigned char _key[ZT_PEER_SECRET_KEY_LENGTH];
@ -384,9 +388,9 @@ private:
uint16_t _vRevision;
Identity _id;
struct {
SharedPtr<Path> path;
uint64_t lastReceive;
bool clusterSuboptimal;
SharedPtr<Path> path;
unsigned int clusterWeights;
} _paths[ZT_MAX_PEER_NETWORK_PATHS];
Mutex _paths_m;
unsigned int _numPaths;

1
node/Utils.cpp
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@ -292,6 +292,7 @@ unsigned int Utils::snprintf(char *buf,unsigned int len,const char *fmt,...)
if ((n >= (int)len)||(n < 0)) {
if (len)
buf[len - 1] = (char)0;
abort();
throw std::length_error("buf[] overflow in Utils::snprintf");
}

10
one.cpp
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@ -330,12 +330,12 @@ static int cli(int argc,char **argv)
out << "200 listpeers <ztaddr> <path> <latency> <version> <role>" << ZT_EOL_S;
if (j.is_array()) {
for(unsigned long k=0;k<j.size();++k) {
auto p = j[k];
auto &p = j[k];
std::string bestPath;
auto paths = p["paths"];
if (paths.is_array()) {
for(unsigned long i=0;i<paths.size();++i) {
auto path = paths[i];
auto &path = paths[i];
if (path["preferred"]) {
char tmp[256];
std::string addr = path["address"];
@ -389,13 +389,13 @@ static int cli(int argc,char **argv)
out << "200 listnetworks <nwid> <name> <mac> <status> <type> <dev> <ZT assigned ips>" << ZT_EOL_S;
if (j.is_array()) {
for(unsigned long i=0;i<j.size();++i) {
auto n = j[i];
auto &n = j[i];
if (n.is_object()) {
std::string aa;
auto assignedAddresses = n["assignedAddresses"];
auto &assignedAddresses = n["assignedAddresses"];
if (assignedAddresses.is_array()) {
for(unsigned long j=0;j<assignedAddresses.size();++j) {
auto addr = assignedAddresses[j];
auto &addr = assignedAddresses[j];
if (addr.is_string()) {
if (aa.length() > 0) aa.push_back(',');
aa.append(addr);

8
service/ControlPlane.cpp
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@ -165,7 +165,7 @@ static void _jsonAppend(unsigned int depth,std::string &buf,const ZT_VirtualNetw
static std::string _jsonEnumerate(unsigned int depth,const ZT_PeerPhysicalPath *pp,unsigned int count)
{
char json[1024];
char json[2048];
char prefix[32];
if (depth >= sizeof(prefix)) // sanity check -- shouldn't be possible
@ -183,14 +183,14 @@ static std::string _jsonEnumerate(unsigned int depth,const ZT_PeerPhysicalPath *
"%s\t\"address\": \"%s\",\n"
"%s\t\"lastSend\": %llu,\n"
"%s\t\"lastReceive\": %llu,\n"
"%s\t\"active\": %s,\n"
"%s\t\"active\": true,\n"
"%s\t\"preferred\": %s,\n"
"%s\t\"trustedPathId\": %llu\n"
"%s}",
prefix,_jsonEscape(reinterpret_cast<const InetAddress *>(&(pp[i].address))->toString()).c_str(),
prefix,pp[i].lastSend,
prefix,pp[i].lastReceive,
prefix,(pp[i].active == 0) ? "false" : "true",
prefix,
prefix,(pp[i].preferred == 0) ? "false" : "true",
prefix,pp[i].trustedPathId,
prefix);
@ -201,7 +201,7 @@ static std::string _jsonEnumerate(unsigned int depth,const ZT_PeerPhysicalPath *
static void _jsonAppend(unsigned int depth,std::string &buf,const ZT_Peer *peer)
{
char json[1024];
char json[2048];
char prefix[32];
if (depth >= sizeof(prefix)) // sanity check -- shouldn't be possible