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Merge branch 'dev' of github.com:zerotier/ZeroTierOne into dev

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Adam Ierymenko 2021-12-15 12:32:41 -05:00
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6 changed files with 229 additions and 146 deletions
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node/Bond.cpp
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@ -16,6 +16,7 @@
#include <cmath>
#include <string>
#include <cstdio>
namespace ZeroTier {
@ -95,7 +96,6 @@ SharedPtr<Bond> Bond::createTransportTriggeredBond(const RuntimeEnvironment* ren
int64_t identity = peer->identity().address().toInt();
Bond* bond = nullptr;
if (! _bonds.count(identity)) {
std::string policyAlias;
if (! _policyTemplateAssignments.count(identity)) {
if (_defaultPolicy) {
bond = new Bond(renv, _defaultPolicy, peer);
@ -103,7 +103,7 @@ SharedPtr<Bond> Bond::createTransportTriggeredBond(const RuntimeEnvironment* ren
}
if (! _defaultPolicy && _defaultPolicyStr.length()) {
bond = new Bond(renv, _bondPolicyTemplates[_defaultPolicyStr].ptr(), peer);
bond->log("new default custom bond");
bond->log("new default custom bond (based on %s)", bond->getPolicyStrByCode(bond->policy()).c_str());
}
}
else {
@ -148,14 +148,12 @@ SharedPtr<Bond> Bond::createTransportTriggeredBond(const RuntimeEnvironment* ren
SharedPtr<Link> Bond::getLinkBySocket(const std::string& policyAlias, uint64_t localSocket)
{
Mutex::Lock _l(_links_m);
char ifname[32] = { 0 }; // 256 because interfaces on Windows can potentially be that long
char ifname[64] = { 0 };
_phy->getIfName((PhySocket*)((uintptr_t)localSocket), ifname, sizeof(ifname) - 1);
// fprintf(stderr, "ifname %s\n",ifname);
std::string ifnameStr(ifname);
auto search = _interfaceToLinkMap[policyAlias].find(ifnameStr);
if (search == _interfaceToLinkMap[policyAlias].end()) {
// If the link wasn't already known, add a new entry
// fprintf(stderr, "adding new link?? %s\n", ifnameStr.c_str());
SharedPtr<Link> s = new Link(ifnameStr, 0, 0, true, ZT_BOND_SLAVE_MODE_SPARE, "", 0.0);
_interfaceToLinkMap[policyAlias].insert(std::pair<std::string, SharedPtr<Link> >(ifnameStr, s));
return s;
@ -183,7 +181,6 @@ void Bond::processBackgroundTasks(void* tPtr, const int64_t now)
while (bondItr != _bonds.end()) {
// Update Bond Controller's background processing timer
_currMinReqMonitorInterval = std::min(_currMinReqMonitorInterval, (unsigned long)(bondItr->second->monitorInterval()));
// Process bond tasks
bondItr->second->processBackgroundBondTasks(tPtr, now);
++bondItr;
}
@ -216,8 +213,6 @@ Bond::Bond(const RuntimeEnvironment* renv, SharedPtr<Bond> originalBond, const S
void Bond::nominatePathToBond(const SharedPtr<Path>& path, int64_t now)
{
char pathStr[64] = { 0 };
path->address().toString(pathStr);
Mutex::Lock _l(_paths_m);
/**
* Ensure the link is allowed and the path is not already present
@ -261,7 +256,7 @@ void Bond::nominatePathToBond(const SharedPtr<Path>& path, int64_t now)
_paths[i].enabled = sl->enabled();
_paths[i].onlyPathOnLink = ! bFoundCommonLink;
}
log("nominate link %s/%s (now in trial period)", getLink(path)->ifname().c_str(), pathStr);
log("nominate link %s", pathToStr(path).c_str());
break;
}
}
@ -365,9 +360,6 @@ SharedPtr<Path> Bond::getAppropriatePath(int64_t now, int32_t flowId)
void Bond::recordIncomingInvalidPacket(const SharedPtr<Path>& path)
{
// char pathStr[64] = { 0 }; path->address().toString(pathStr);
// log("%s (qos) Invalid packet on link %s/%s from peer %llx",
// getLink(path)->ifname().c_str(), pathStr);
Mutex::Lock _l(_paths_m);
for (int i = 0; i < ZT_MAX_PEER_NETWORK_PATHS; ++i) {
if (_paths[i].p == path) {
@ -380,13 +372,6 @@ void Bond::recordOutgoingPacket(const SharedPtr<Path>& path, uint64_t packetId,
{
_freeRandomByte += (unsigned char)(packetId >> 8); // Grab entropy to use in path selection logic
bool isFrame = (verb == Packet::Packet::VERB_ECHO || verb == Packet::VERB_FRAME || verb == Packet::VERB_EXT_FRAME);
if (isFrame) {
// char pathStr[64] = { 0 };
// path->address().toString(pathStr);
// int pathIdx = getNominatedPathIdx(path);
// log("outgoing packet via [%d]", pathIdx);
// log("outgoing packet via %s/%s", getLink(path)->ifname().c_str(), pathStr);
}
bool shouldRecord = (packetId & (ZT_QOS_ACK_DIVISOR - 1) && (verb != Packet::VERB_ACK) && (verb != Packet::VERB_QOS_MEASUREMENT));
if (isFrame || shouldRecord) {
Mutex::Lock _l(_paths_m);
@ -417,12 +402,6 @@ void Bond::recordOutgoingPacket(const SharedPtr<Path>& path, uint64_t packetId,
void Bond::recordIncomingPacket(const SharedPtr<Path>& path, uint64_t packetId, uint16_t payloadLength, Packet::Verb verb, int32_t flowId, int64_t now)
{
bool isFrame = (verb == Packet::Packet::VERB_ECHO || verb == Packet::VERB_FRAME || verb == Packet::VERB_EXT_FRAME);
if (isFrame) {
// char pathStr[64] = { 0 }; path->address().toString(pathStr);
// int pathIdx = getNominatedPathIdx(path);
// log("incoming packet via [%d] [id=%llx, len=%d, verb=%d, flowId=%x]", pathIdx, packetId, payloadLength, verb, flowId);
// log("incoming packet via %s/%s (ls=%llx) [id=%llx, len=%d, verb=%d, flowId=%x]", getLink(path)->ifname().c_str(), pathStr, path->localSocket(), packetId, payloadLength, verb, flowId);
}
bool shouldRecord = (packetId & (ZT_QOS_ACK_DIVISOR - 1) && (verb != Packet::VERB_ACK) && (verb != Packet::VERB_QOS_MEASUREMENT));
Mutex::Lock _l(_paths_m);
int pathIdx = getNominatedPathIdx(path);
@ -474,8 +453,7 @@ void Bond::receivedQoS(const SharedPtr<Path>& path, int64_t now, int count, uint
if (pathIdx == ZT_MAX_PEER_NETWORK_PATHS) {
return;
}
// char pathStr[64] = { 0 }; path->address().toString(pathStr);
// log("received QoS packet (sampling %d frames) via %s/%s", count, getLink(path)->ifname().c_str(), pathStr);
// log("received QoS packet (sampling %d frames) via %s", count, pathToStr(path).c_str());
// Look up egress times and compute latency values for each record
std::map<uint64_t, uint64_t>::iterator it;
for (int j = 0; j < count; j++) {
@ -510,12 +488,9 @@ int32_t Bond::generateQoSPacket(int pathIdx, int64_t now, char* qosBuffer)
bool Bond::assignFlowToBondedPath(SharedPtr<Flow>& flow, int64_t now)
{
char curPathStr[64] = { 0 };
unsigned int idx = ZT_MAX_PEER_NETWORK_PATHS;
if (_policy == ZT_BOND_POLICY_BALANCE_XOR) {
idx = abs((int)(flow->id % (_numBondedPaths)));
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[_bondIdxMap[idx]].p->localSocket());
_paths[_bondIdxMap[idx]].p->address().toString(curPathStr);
flow->assignPath(_bondIdxMap[idx], now);
++(_paths[_bondIdxMap[idx]].assignedFlowCount);
}
@ -542,8 +517,6 @@ bool Bond::assignFlowToBondedPath(SharedPtr<Flow>& flow, int64_t now)
entropy %= totalIncompleteAllocation;
for (unsigned int i = 0; i < ZT_MAX_PEER_NETWORK_PATHS; ++i) {
if (_paths[i].p && _paths[i].bonded) {
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[i].p->localSocket());
_paths[i].p->address().toString(curPathStr);
uint8_t probabilitySegment = (_totalBondUnderload > 0) ? _paths[i].affinity : _paths[i].allocation;
if (entropy <= probabilitySegment) {
idx = i;
@ -567,15 +540,13 @@ bool Bond::assignFlowToBondedPath(SharedPtr<Flow>& flow, int64_t now)
}
flow->assignPath(_abPathIdx, now);
}
_paths[flow->assignedPath].p->address().toString(curPathStr);
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[flow->assignedPath].p->localSocket());
log("assign out-flow %x to link %s/%s (%lu / %lu flows)", flow->id, link->ifname().c_str(), curPathStr, _paths[flow->assignedPath].assignedFlowCount, (unsigned long)_flows.size());
log("assign out-flow %04x to link %s (%lu / %lu flows)", flow->id, pathToStr(_paths[flow->assignedPath].p).c_str(), _paths[flow->assignedPath].assignedFlowCount, (unsigned long)_flows.size());
return true;
}
SharedPtr<Bond::Flow> Bond::createFlow(int pathIdx, int32_t flowId, unsigned char entropy, int64_t now)
{
char curPathStr[64] = { 0 };
if (! _numBondedPaths) {
log("unable to assign flow %x (bond has no links)\n", flowId);
return SharedPtr<Flow>();
@ -593,10 +564,8 @@ SharedPtr<Bond::Flow> Bond::createFlow(int pathIdx, int32_t flowId, unsigned cha
*/
if (pathIdx != ZT_MAX_PEER_NETWORK_PATHS) {
flow->assignPath(pathIdx, now);
_paths[pathIdx].p->address().toString(curPathStr);
_paths[pathIdx].assignedFlowCount++;
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[flow->assignedPath].p->localSocket());
log("assign in-flow %x to link %s/%s (%lu / %lu)", flow->id, link->ifname().c_str(), curPathStr, _paths[pathIdx].assignedFlowCount, (unsigned long)_flows.size());
log("assign in-flow %x to link %s (%lu / %lu)", flow->id, pathToStr(_paths[pathIdx].p).c_str(), _paths[pathIdx].assignedFlowCount, (unsigned long)_flows.size());
}
/**
* Add a flow when no path was provided. This means that it is an outgoing packet
@ -680,7 +649,6 @@ void Bond::processIncomingPathNegotiationRequest(uint64_t now, SharedPtr<Path>&
void Bond::pathNegotiationCheck(void* tPtr, int64_t now)
{
char pathStr[64] = { 0 };
int maxInPathIdx = ZT_MAX_PEER_NETWORK_PATHS;
int maxOutPathIdx = ZT_MAX_PEER_NETWORK_PATHS;
uint64_t maxInCount = 0;
@ -718,8 +686,6 @@ void Bond::pathNegotiationCheck(void* tPtr, int64_t now)
sendPATH_NEGOTIATION_REQUEST(tPtr, _paths[maxOutPathIdx].p);
++_numSentPathNegotiationRequests;
_lastSentPathNegotiationRequest = now;
_paths[maxOutPathIdx].p->address().toString(pathStr);
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[maxOutPathIdx].p->localSocket());
// fprintf(stderr, "sending request to use %s on %s, ls=%llx, utility=%d\n", pathStr, link->ifname().c_str(), _paths[maxOutPathIdx].p->localSocket(), _localUtility);
}
}
@ -738,9 +704,7 @@ void Bond::pathNegotiationCheck(void* tPtr, int64_t now)
void Bond::sendPATH_NEGOTIATION_REQUEST(void* tPtr, int pathIdx)
{
char pathStr[64] = { 0 };
_paths[pathIdx].p->address().toString(pathStr);
log("send link negotiation request to peer via link %s/%s, local utility is %d", getLink(_paths[pathIdx].p)->ifname().c_str(), pathStr, _localUtility);
log("send link negotiation request to peer via link %s, local utility is %d", pathToStr(_paths[pathIdx].p).c_str(), _localUtility);
if (_abLinkSelectMethod != ZT_BOND_RESELECTION_POLICY_OPTIMIZE) {
return;
}
@ -754,8 +718,6 @@ void Bond::sendPATH_NEGOTIATION_REQUEST(void* tPtr, int pathIdx)
void Bond::sendQOS_MEASUREMENT(void* tPtr, int pathIdx, int64_t localSocket, const InetAddress& atAddress, int64_t now)
{
char pathStr[64] = { 0 };
_paths[pathIdx].p->address().toString(pathStr);
int64_t _now = RR->node->now();
Packet outp(_peer->_id.address(), RR->identity.address(), Packet::VERB_QOS_MEASUREMENT);
char qosData[ZT_QOS_MAX_PACKET_SIZE];
@ -773,7 +735,7 @@ void Bond::sendQOS_MEASUREMENT(void* tPtr, int pathIdx, int64_t localSocket, con
_paths[pathIdx].packetsReceivedSinceLastQoS = 0;
_paths[pathIdx].lastQoSMeasurement = now;
}
// log("send QOS via link %s/%s (len=%d)", getLink(_paths[pathIdx].p)->ifname().c_str(), pathStr, len);
// log("send QOS via link %s (len=%d)", pathToStr(_paths[pathIdx].p).c_str(), len);
}
void Bond::processBackgroundBondTasks(void* tPtr, int64_t now)
@ -794,17 +756,15 @@ void Bond::processBackgroundBondTasks(void* tPtr, int64_t now)
// Send ambient monitoring traffic
for (unsigned int i = 0; i < ZT_MAX_PEER_NETWORK_PATHS; ++i) {
if (_paths[i].p && _paths[i].allowed()) {
// ECHO (this is our bond's heartbeat)
if ((_monitorInterval > 0) && ((now - _paths[i].p->_lastOut) >= _monitorInterval)) {
if ((_peer->remoteVersionProtocol() >= 5) && (! ((_peer->remoteVersionMajor() == 1) && (_peer->remoteVersionMinor() == 1) && (_peer->remoteVersionRevision() == 0)))) {
Packet outp(_peer->address(), RR->identity.address(), Packet::VERB_ECHO);
Packet outp(_peer->address(), RR->identity.address(), Packet::VERB_ECHO); // ECHO (this is our bond's heartbeat)
outp.armor(_peer->key(), true, _peer->aesKeysIfSupported());
RR->node->expectReplyTo(outp.packetId());
RR->node->putPacket(tPtr, _paths[i].p->localSocket(), _paths[i].p->address(), outp.data(), outp.size());
_paths[i].p->_lastOut = now;
_overheadBytes += outp.size();
char pathStr[64] = { 0 };
_paths[i].p->address().toString(pathStr);
// log("send HELLO via link %s/%s (len=%d)", getLink(_paths[i].p)->ifname().c_str(), pathStr, outp.size());
log("sent ECHO via link %s", pathToStr(_paths[i].p).c_str());
}
}
// QOS
@ -837,7 +797,6 @@ void Bond::processBackgroundBondTasks(void* tPtr, int64_t now)
void Bond::curateBond(int64_t now, bool rebuildBond)
{
char pathStr[64] = { 0 };
uint8_t tmpNumAliveLinks = 0;
uint8_t tmpNumTotalLinks = 0;
/**
@ -855,7 +814,7 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
}
/**
* Determine alive-ness
* Determine aliveness
*/
_paths[i].alive = (now - _paths[i].p->_lastIn) < _failoverInterval;
@ -880,12 +839,11 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
* Note eligibility state change (if any) and take appropriate action
*/
if (currEligibility != _paths[i].eligible) {
_paths[i].p->address().toString(pathStr);
if (currEligibility == 0) {
log("link %s/%s is no longer eligible", getLink(_paths[i].p)->ifname().c_str(), pathStr);
log("link %s is no longer eligible", pathToStr(_paths[i].p).c_str());
}
if (currEligibility == 1) {
log("link %s/%s is eligible", getLink(_paths[i].p)->ifname().c_str(), pathStr);
log("link %s is eligible", pathToStr(_paths[i].p).c_str());
}
dumpPathStatus(now, i);
if (currEligibility) {
@ -895,8 +853,7 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
_paths[i].adjustRefractoryPeriod(now, _defaultPathRefractoryPeriod, ! currEligibility);
if (_paths[i].bonded) {
if (_allowFlowHashing) {
_paths[i].p->address().toString(pathStr);
log("link %s/%s was bonded, flow reallocation will occur soon", getLink(_paths[i].p)->ifname().c_str(), pathStr);
log("link %s was bonded, flow reallocation will occur soon", pathToStr(_paths[i].p).c_str());
rebuildBond = true;
_paths[i].shouldReallocateFlows = _paths[i].bonded;
}
@ -917,19 +874,13 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
_numTotalLinks = tmpNumTotalLinks;
bool tmpHealthStatus = true;
if (_policy == ZT_BOND_POLICY_ACTIVE_BACKUP) {
if (_numAliveLinks < 2) {
// Considered healthy if there is at least one backup link
tmpHealthStatus = false;
}
}
if (_policy == ZT_BOND_POLICY_BROADCAST) {
if (_numAliveLinks < 1) {
// Considered healthy if we're able to send frames at all
tmpHealthStatus = false;
}
}
if ((_policy == ZT_BOND_POLICY_BALANCE_RR) || (_policy == ZT_BOND_POLICY_BALANCE_XOR) || (_policy == ZT_BOND_POLICY_BALANCE_AWARE)) {
if ((_policy == ZT_BOND_POLICY_BALANCE_RR) || (_policy == ZT_BOND_POLICY_BALANCE_XOR) || (_policy == ZT_BOND_POLICY_BALANCE_AWARE || (_policy == ZT_BOND_POLICY_ACTIVE_BACKUP))) {
if (_numAliveLinks < _numTotalLinks) {
tmpHealthStatus = false;
}
@ -942,7 +893,7 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
else {
healthStatusStr = "DEGRADED";
}
log("bond is in a %s state (links: %d/%d)", healthStatusStr.c_str(), _numAliveLinks, _numTotalLinks);
log("bond is %s (%d/%d links)", healthStatusStr.c_str(), _numAliveLinks, _numTotalLinks);
dumpInfo(now, true);
}
@ -959,7 +910,6 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
}
if (rebuildBond) {
log("rebuilding bond");
// TODO: Obey blacklisting
int updatedBondedPathCount = 0;
// Build map associating paths with local physical links. Will be selected from in next step
std::map<SharedPtr<Link>, std::vector<int> > linkMap;
@ -984,8 +934,7 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
}
addPathToBond(idx, updatedBondedPathCount);
++updatedBondedPathCount;
_paths[idx].p->address().toString(pathStr);
log("add %s/%s (no user addr preference)", link->ifname().c_str(), pathStr);
log("add %s (no user addr preference)", pathToStr(_paths[idx].p).c_str());
}
}
// If the user prefers to only use one address type (IPv4 or IPv6)
@ -996,14 +945,12 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
continue;
}
if (! _paths[idx].allowed()) {
_paths[idx].p->address().toString(pathStr);
log("did not add %s/%s (user addr preference %d)", link->ifname().c_str(), pathStr, ipvPref);
log("did not add %s (user addr preference %d)", pathToStr(_paths[idx].p).c_str(), ipvPref);
continue;
}
addPathToBond(idx, updatedBondedPathCount);
++updatedBondedPathCount;
_paths[idx].p->address().toString(pathStr);
log("add path %s/%s (user addr preference %d)", link->ifname().c_str(), pathStr, ipvPref);
log("add path %s (user addr preference %d)", pathToStr(_paths[idx].p).c_str(), ipvPref);
}
}
// If the users prefers one address type to another, try to find at least
@ -1019,8 +966,7 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
if (_paths[idx].preferred()) {
addPathToBond(idx, updatedBondedPathCount);
++updatedBondedPathCount;
_paths[idx].p->address().toString(pathStr);
log("add %s/%s (user addr preference %d)", link->ifname().c_str(), pathStr, ipvPref);
log("add %s (user addr preference %d)", pathToStr(_paths[idx].p).c_str(), ipvPref);
foundPreferredPath = true;
}
}
@ -1034,8 +980,7 @@ void Bond::curateBond(int64_t now, bool rebuildBond)
}
addPathToBond(idx, updatedBondedPathCount);
++updatedBondedPathCount;
_paths[idx].p->address().toString(pathStr);
log("add %s/%s (user addr preference %d)", link->ifname().c_str(), pathStr, ipvPref);
log("add %s (user addr preference %d)", pathToStr(_paths[idx].p).c_str(), ipvPref);
foundPreferredPath = true;
}
}
@ -1151,8 +1096,6 @@ void Bond::estimatePathQuality(int64_t now)
void Bond::processBalanceTasks(int64_t now)
{
char pathStr[64] = { 0 };
if (_allowFlowHashing) {
/**
* Clean up and reset flows if necessary
@ -1177,8 +1120,7 @@ void Bond::processBalanceTasks(int64_t now)
continue;
}
if (! _paths[i].eligible && _paths[i].shouldReallocateFlows) {
_paths[i].p->address().toString(pathStr);
log("reallocate flows from dead link %s/%s", getLink(_paths[i].p)->ifname().c_str(), pathStr);
log("reallocate flows from dead link %s", pathToStr(_paths[i].p).c_str());
std::map<int32_t, SharedPtr<Flow> >::iterator flow_it = _flows.begin();
while (flow_it != _flows.end()) {
if (_paths[flow_it->second->assignedPath].p == _paths[i].p) {
@ -1214,8 +1156,7 @@ void Bond::processBalanceTasks(int64_t now)
continue;
}
if (_paths[i].p && _paths[i].bonded && _paths[i].eligible && (_paths[i].allocation < minimumAllocationValue) && _paths[i].assignedFlowCount) {
_paths[i].p->address().toString(pathStr);
log("reallocate flows from under-performing link %s/%s\n", getLink(_paths[i].p)->ifname().c_str(), pathStr);
log("reallocate flows from under-performing link %s\n", pathToStr(_paths[i].p).c_str());
std::map<int32_t, SharedPtr<Flow> >::iterator flow_it = _flows.begin();
while (flow_it != _flows.end()) {
if (flow_it->second->assignedPath == _paths[i].p) {
@ -1249,14 +1190,10 @@ void Bond::dequeueNextActiveBackupPath(uint64_t now)
bool Bond::abForciblyRotateLink()
{
char prevPathStr[64];
char curPathStr[64];
if (_policy == ZT_BOND_POLICY_ACTIVE_BACKUP) {
int prevPathIdx = _abPathIdx;
_paths[_abPathIdx].p->address().toString(prevPathStr);
dequeueNextActiveBackupPath(RR->node->now());
_paths[_abPathIdx].p->address().toString(curPathStr);
log("forcibly rotate link from %s/%s to %s/%s", getLink(_paths[prevPathIdx].p)->ifname().c_str(), prevPathStr, getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr);
log("active link rotated from %s to %s", pathToStr(_paths[prevPathIdx].p).c_str(), pathToStr(_paths[_abPathIdx].p).c_str());
return true;
}
return false;
@ -1264,9 +1201,6 @@ bool Bond::abForciblyRotateLink()
void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
{
char pathStr[64] = { 0 };
char prevPathStr[64];
char curPathStr[64];
int prevActiveBackupPathIdx = _abPathIdx;
int nonPreferredPathIdx;
bool bFoundPrimaryLink = false;
@ -1280,11 +1214,10 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
log("no active link");
}
else if (_paths[_abPathIdx].p) {
_paths[_abPathIdx].p->address().toString(curPathStr);
log("active link is %s/%s, failover queue size is %zu", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr, _abFailoverQueue.size());
log("active link is %s, failover queue size is %zu", pathToStr(_paths[_abPathIdx].p).c_str(), _abFailoverQueue.size());
}
if (_abFailoverQueue.empty()) {
log("failover queue is empty, no longer fault-tolerant");
log("failover queue is empty, bond is no longer fault-tolerant");
}
}
@ -1304,10 +1237,9 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
log("no user-specified links");
for (int i = 0; i < ZT_MAX_PEER_NETWORK_PATHS; ++i) {
if (_paths[i].p && _paths[i].eligible) {
_paths[i].p->address().toString(curPathStr);
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[i].p->localSocket());
if (link) {
log("found eligible link %s/%s", getLink(_paths[i].p)->ifname().c_str(), curPathStr);
log("found eligible link %s", pathToStr(_paths[i].p).c_str());
_abPathIdx = i;
break;
}
@ -1327,18 +1259,16 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[i].p->localSocket());
if (_paths[i].eligible && link->primary()) {
if (! _paths[i].preferred()) {
_paths[i].p->address().toString(curPathStr);
// Found path on primary link, take note in case we don't find a preferred path
nonPreferredPathIdx = i;
bFoundPrimaryLink = true;
}
if (_paths[i].preferred()) {
_abPathIdx = i;
_paths[_abPathIdx].p->address().toString(curPathStr);
bFoundPrimaryLink = true;
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[_abPathIdx].p->localSocket());
if (link) {
log("found preferred primary link %s/%s", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr);
log("found preferred primary link %s", pathToStr(_paths[_abPathIdx].p).c_str());
}
break; // Found preferred path on primary link
}
@ -1364,8 +1294,7 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
if (_abPathIdx != ZT_MAX_PEER_NETWORK_PATHS) {
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[_abPathIdx].p->localSocket());
if (link) {
_paths[_abPathIdx].p->address().toString(curPathStr);
log("select non-primary link %s/%s", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr);
log("select non-primary link %s", pathToStr(_paths[_abPathIdx].p).c_str());
}
}
}
@ -1380,11 +1309,10 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
// Remove ineligible paths from the failover link queue
for (std::deque<int>::iterator it(_abFailoverQueue.begin()); it != _abFailoverQueue.end();) {
if (_paths[(*it)].p && ! _paths[(*it)].eligible) {
_paths[(*it)].p->address().toString(curPathStr);
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[(*it)].p->localSocket());
it = _abFailoverQueue.erase(it);
if (link) {
log("link %s/%s is now ineligible, removing from failover queue (%zu links in queue)", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr, _abFailoverQueue.size());
log("link %s is ineligible, removing from failover queue (%zu links in queue)", pathToStr(_paths[_abPathIdx].p).c_str(), _abFailoverQueue.size());
}
}
else {
@ -1410,7 +1338,6 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
continue;
}
SharedPtr<Link> link = RR->bc->getLinkBySocket(_policyAlias, _paths[i].p->localSocket());
_paths[i].p->address().toString(pathStr);
int failoverScoreHandicap = _paths[i].failoverScore;
if (_paths[i].preferred()) {
@ -1432,7 +1359,6 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
if (failoverLink) {
for (int j = 0; j < ZT_MAX_PEER_NETWORK_PATHS; j++) {
if (_paths[j].p && getLink(_paths[j].p) == failoverLink.ptr()) {
_paths[j].p->address().toString(pathStr);
int inheritedHandicap = failoverScoreHandicap - 10;
int newHandicap = _paths[j].failoverScore > inheritedHandicap ? _paths[j].failoverScore : inheritedHandicap;
if (! _paths[j].preferred()) {
@ -1451,8 +1377,7 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
}
if (! bFoundPathInQueue) {
_abFailoverQueue.push_front(i);
_paths[i].p->address().toString(curPathStr);
log("add link %s/%s to failover queue (%zu links in queue)", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr, _abFailoverQueue.size());
log("add link %s to failover queue (%zu links in queue)", pathToStr(_paths[i].p).c_str(), _abFailoverQueue.size());
addPathToBond(0, i);
}
}
@ -1497,8 +1422,7 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
}
if (! bFoundPathInQueue) {
_abFailoverQueue.push_front(i);
_paths[i].p->address().toString(curPathStr);
log("add link %s/%s to failover queue (%zu links in queue)", getLink(_paths[i].p)->ifname().c_str(), curPathStr, _abFailoverQueue.size());
log("add link %s to failover queue (%zu links in queue)", pathToStr(_paths[i].p).c_str(), _abFailoverQueue.size());
addPathToBond(0, i);
}
}
@ -1528,12 +1452,10 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
* Fulfill primary re-select obligations
*/
if (_paths[_abPathIdx].p && ! _paths[_abPathIdx].eligible) { // Implicit ZT_BOND_RESELECTION_POLICY_FAILURE
_paths[_abPathIdx].p->address().toString(curPathStr);
log("link %s/%s has failed, select link from failover queue (%zu links in queue)", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr, _abFailoverQueue.size());
log("link %s has failed, select link from failover queue (%zu links in queue)", pathToStr(_paths[_abPathIdx].p).c_str(), _abFailoverQueue.size());
if (! _abFailoverQueue.empty()) {
dequeueNextActiveBackupPath(now);
_paths[_abPathIdx].p->address().toString(curPathStr);
log("active link switched to %s/%s", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr);
log("active link switched to %s", pathToStr(_paths[_abPathIdx].p).c_str());
}
else {
log("failover queue is empty, no links to choose from");
@ -1548,8 +1470,7 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
if (_abLinkSelectMethod == ZT_BOND_RESELECTION_POLICY_ALWAYS) {
if (_paths[_abPathIdx].p && ! getLink(_paths[_abPathIdx].p)->primary() && getLink(_paths[_abFailoverQueue.front()].p)->primary()) {
dequeueNextActiveBackupPath(now);
_paths[_abPathIdx].p->address().toString(curPathStr);
log("switch back to available primary link %s/%s (select: always)", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr);
log("switch back to available primary link %s (select mode: always)", pathToStr(_paths[_abPathIdx].p).c_str());
}
}
if (_abLinkSelectMethod == ZT_BOND_RESELECTION_POLICY_BETTER) {
@ -1557,8 +1478,7 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
// Active backup has switched to "better" primary link according to re-select policy.
if (getLink(_paths[_abFailoverQueue.front()].p)->primary() && (_paths[_abFailoverQueue.front()].failoverScore > _paths[_abPathIdx].failoverScore)) {
dequeueNextActiveBackupPath(now);
_paths[_abPathIdx].p->address().toString(curPathStr);
log("switch back to user-defined primary link %s/%s (select: better)", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr);
log("switch back to user-defined primary link %s (select mode: better)", pathToStr(_paths[_abPathIdx].p).c_str());
}
}
}
@ -1568,10 +1488,8 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
*/
if (_paths[_abFailoverQueue.front()].negotiated) {
dequeueNextActiveBackupPath(now);
_paths[_abPathIdx].p->address().toString(prevPathStr);
_lastPathNegotiationCheck = now;
_paths[_abPathIdx].p->address().toString(curPathStr);
log("switch negotiated link %s/%s (select: optimize)", getLink(_paths[_abPathIdx].p)->ifname().c_str(), curPathStr);
log("switch negotiated link %s (select mode: optimize)", pathToStr(_paths[_abPathIdx].p).c_str());
}
else {
// Try to find a better path and automatically switch to it -- not too often, though.
@ -1584,18 +1502,12 @@ void Bond::processActiveBackupTasks(void* tPtr, int64_t now)
int thresholdQuantity = (int)(ZT_BOND_ACTIVE_BACKUP_OPTIMIZE_MIN_THRESHOLD * (float)_paths[_abPathIdx].allocation);
if ((failoverScoreDifference > 0) && (failoverScoreDifference > thresholdQuantity)) {
SharedPtr<Path> oldPath = _paths[_abPathIdx].p;
_paths[_abPathIdx].p->address().toString(prevPathStr);
dequeueNextActiveBackupPath(now);
_paths[_abPathIdx].p->address().toString(curPathStr);
log("ab",
"switch from %s/%s (score: %d) to better link %s/%s (score: %d) for peer %llx (select: optimize)",
getLink(oldPath)->ifname().c_str(),
prevPathStr,
log("switch from %s (score: %d) to better link %s (score: %d) (select mode: optimize)",
pathToStr(oldPath).c_str(),
prevFScore,
getLink(_paths[_abPathIdx].p)->ifname().c_str(),
curPathStr,
newFScore,
_peerId);
pathToStr(_paths[_abPathIdx].p).c_str(),
newFScore);
}
}
}
@ -1717,6 +1629,7 @@ void Bond::setBondParameters(int policy, SharedPtr<Bond> templateBond, bool useT
/* If a user has specified custom parameters for this bonding policy, overlay them onto the defaults */
if (useTemplate) {
_policyAlias = templateBond->_policyAlias;
_policy = templateBond->policy();
_failoverInterval = templateBond->_failoverInterval >= ZT_BOND_FAILOVER_MIN_INTERVAL ? templateBond->_failoverInterval : ZT_BOND_FAILOVER_MIN_INTERVAL;
_downDelay = templateBond->_downDelay;
_upDelay = templateBond->_upDelay;
@ -1751,28 +1664,44 @@ SharedPtr<Link> Bond::getLink(const SharedPtr<Path>& path)
return RR->bc->getLinkBySocket(_policyAlias, path->localSocket());
}
std::string Bond::pathToStr(const SharedPtr<Path>& path)
{
#ifdef ZT_TRACE
char pathStr[64] = { 0 };
char fullPathStr[256] = { 0 };
path->address().toString(pathStr);
snprintf(fullPathStr, 256, "%.16llx-%s/%s", (unsigned long long)(path->localSocket()), getLink(path)->ifname().c_str(), pathStr);
return std::string(fullPathStr);
#else
return "";
#endif
}
void Bond::dumpPathStatus(int64_t now, int pathIdx)
{
char pathStr[64] = { 0 };
_paths[pathIdx].p->address().toString(pathStr);
log("path status: [%2d] alive:%d, eli:%d, bonded:%d, flows:%6d, lat:%10.3f, jitter:%10.3f, error:%6.4f, loss:%6.4f, age:%6d alloc:%d--- (%s/%s)",
#ifdef ZT_TRACE
std::string aliveOrDead = _paths[pathIdx].alive ? std::string("alive") : std::string("dead");
std::string eligibleOrNot = _paths[pathIdx].eligible ? std::string("eligible") : std::string("ineligible");
std::string bondedOrNot = _paths[pathIdx].bonded ? std::string("bonded") : std::string("unbonded");
log("path[%2d] --- %5s (%7d), %10s, %8s, flows=%-6d lat=%-8.3f pdv=%-7.3f err=%-6.4f loss=%-6.4f alloc=%-3d --- (%s)",
pathIdx,
_paths[pathIdx].alive,
_paths[pathIdx].eligible,
_paths[pathIdx].bonded,
aliveOrDead.c_str(),
_paths[pathIdx].p->age(now),
eligibleOrNot.c_str(),
bondedOrNot.c_str(),
_paths[pathIdx].assignedFlowCount,
_paths[pathIdx].latencyMean,
_paths[pathIdx].latencyVariance,
_paths[pathIdx].packetErrorRatio,
_paths[pathIdx].packetLossRatio,
_paths[pathIdx].p->age(now),
_paths[pathIdx].allocation,
getLink(_paths[pathIdx].p)->ifname().c_str(),
pathStr);
pathToStr(_paths[pathIdx].p).c_str());
#endif
}
void Bond::dumpInfo(int64_t now, bool force)
{
#ifdef ZT_TRACE
uint64_t timeSinceLastDump = now - _lastSummaryDump;
if (! force && timeSinceLastDump < ZT_BOND_STATUS_INTERVAL) {
return;
@ -1780,12 +1709,21 @@ void Bond::dumpInfo(int64_t now, bool force)
_lastSummaryDump = now;
float overhead = (_overheadBytes / (timeSinceLastDump / 1000.0f) / 1000.0f);
_overheadBytes = 0;
log("bond status: bp: %d, fi: %d, mi: %d, ud: %d, dd: %d, flows: %lu, ambient: %f KB/s", _policy, _failoverInterval, _monitorInterval, _upDelay, _downDelay, (unsigned long)_flows.size(), overhead);
log("bond: bp=%d, fi=%d, mi=%d, ud=%d, dd=%d, flows=%lu, overhead=%f KB/s",
_policy,
_failoverInterval,
_monitorInterval,
_upDelay,
_downDelay,
(unsigned long)_flows.size(),
overhead);
for (int i = 0; i < ZT_MAX_PEER_NETWORK_PATHS; ++i) {
if (_paths[i].p) {
dumpPathStatus(now, i);
}
}
log("");
#endif
}
} // namespace ZeroTier

7
node/Bond.hpp
View File

@ -518,6 +518,7 @@ class Bond {
public:
void dumpInfo(int64_t now, bool force);
std::string pathToStr(const SharedPtr<Path>& path);
void dumpPathStatus(int64_t now, int pathIdx);
SharedPtr<Link> getLink(const SharedPtr<Path>& path);
@ -1000,12 +1001,12 @@ class Bond {
/**
* @param policy Bonding policy for this bond
*/
/*
inline void setPolicy(uint8_t policy)
{
_policy = policy;
}
*/
/**
* @return the current bonding policy
*/
@ -1138,6 +1139,7 @@ class Bond {
*/
void log(const char* fmt, ...)
{
#ifdef ZT_TRACE
time_t rawtime;
struct tm* timeinfo;
char timestamp[80];
@ -1157,6 +1159,7 @@ class Bond {
va_end(args);
RR->t->bondStateMessage(NULL, traceMsg);
#undef MAX_MSG_LEN
#endif
}
private:

3
osdep/MacDNSHelper.hpp
View File

@ -3,6 +3,7 @@
#include <vector>
#include "../node/InetAddress.hpp"
#include "../node/MAC.hpp"
namespace ZeroTier {
@ -11,6 +12,8 @@ class MacDNSHelper
public:
static void setDNS(uint64_t nwid, const char *domain, const std::vector<InetAddress> &servers);
static void removeDNS(uint64_t nwid);
static bool addIps(uint64_t nwid, const MAC mac, const char *dev, const std::vector<InetAddress> &addrs);
static bool removeIps(uint64_t nwid);
};
}

133
osdep/MacDNSHelper.mm
View File

@ -6,6 +6,11 @@
namespace ZeroTier {
static void printKeys (const void* key, const void* value, void* context) {
CFShow(key);
CFShow(value);
}
void MacDNSHelper::setDNS(uint64_t nwid, const char *domain, const std::vector<InetAddress> &servers)
{
SCDynamicStoreRef ds = SCDynamicStoreCreate(NULL, CFSTR("zerotier"), NULL, NULL);
@ -85,4 +90,130 @@ void MacDNSHelper::removeDNS(uint64_t nwid)
CFRelease(ds);
}
}
// Make macOS believe we do in fact have ipv6 connectivity and that it should resolve dns names
// over ipv6 if we ask for them.
// Originally I planned to put all the v6 ip addresses from the network into the config.
// But only the link local address is necessary and sufficient. Added other v6 addresses
// doesn't do anything.
bool MacDNSHelper::addIps(uint64_t nwid, const MAC mac, const char *dev, const std::vector<InetAddress>& addrs)
{
bool hasV6 = false;
for (unsigned int i = 0; i < addrs.size(); ++i) {
if (addrs[i].isV6()) {
hasV6 = true;
break;
}
}
if (!hasV6) {
MacDNSHelper::removeIps(nwid);
return true;
}
SCDynamicStoreRef ds = SCDynamicStoreCreate(NULL, CFSTR("zerotier"), NULL, NULL);
char buf[256] = { 0 };
sprintf(buf, "State:/Network/Service/%.16llx/IPv6", nwid);
InetAddress ll = InetAddress::makeIpv6LinkLocal(mac);
char buf2[256] = {0};
const char* llStr = ll.toIpString(buf2);
CFStringRef key = CFStringCreateWithCString(NULL, buf, kCFStringEncodingUTF8);
CFStringRef* cfaddrs = new CFStringRef[1];
CFStringRef* cfprefixes = new CFStringRef[1];
CFStringRef* cfdestaddrs = new CFStringRef[1];
CFStringRef* cfflags = new CFStringRef[1];
cfaddrs[0] = CFStringCreateWithCString(NULL, llStr, kCFStringEncodingUTF8);
cfprefixes[0] = CFStringCreateWithCString(NULL, "64", kCFStringEncodingUTF8);
cfdestaddrs[0] = CFStringCreateWithCString(NULL, "::ffff:ffff:ffff:ffff:0:0", kCFStringEncodingUTF8);
cfflags[0] = CFStringCreateWithCString(NULL, "0", kCFStringEncodingUTF8);
CFArrayRef addrArray = CFArrayCreate(NULL, (const void**)cfaddrs, 1, &kCFTypeArrayCallBacks);
CFArrayRef prefixArray = CFArrayCreate(NULL, (const void**)cfprefixes, 1, &kCFTypeArrayCallBacks);
CFArrayRef destArray = CFArrayCreate(NULL, (const void**)cfdestaddrs, 1, &kCFTypeArrayCallBacks);
CFArrayRef flagsArray = CFArrayCreate(NULL, (const void**)cfflags, 1, &kCFTypeArrayCallBacks);
CFStringRef cfdev = CFStringCreateWithCString(NULL, dev, kCFStringEncodingUTF8);
const int SIZE = 5;
CFStringRef keys[SIZE];
keys[0] = CFSTR("Addresses");
keys[1] = CFSTR("DestAddresses");
keys[2] = CFSTR("Flags");
keys[3] = CFSTR("InterfaceName");
keys[4] = CFSTR("PrefixLength");
CFTypeRef values[SIZE];
values[0] = addrArray;
values[1] = destArray;
values[2] = flagsArray;
// values[3] = devArray;
values[3] = cfdev;
values[4] = prefixArray;
CFDictionaryRef dict = CFDictionaryCreate(NULL,
(const void**)keys, (const void**)values, SIZE, &kCFCopyStringDictionaryKeyCallBacks,
&kCFTypeDictionaryValueCallBacks);
// CFDictionaryApplyFunction(dict, printKeys, NULL);
CFArrayRef list = SCDynamicStoreCopyKeyList(ds, key);
CFIndex i = 0, j = CFArrayGetCount(list);
bool addrsChanged = true;
CFPropertyListRef oldAddrs = NULL;
bool ret = TRUE;
if (j > 0) {
oldAddrs = SCDynamicStoreCopyValue(ds, (CFStringRef)CFArrayGetValueAtIndex(list, i));
addrsChanged = !CFEqual(oldAddrs,dict);
}
if (addrsChanged) {
if (j <= 0) {
ret &= SCDynamicStoreAddValue(ds, key, dict);
} else {
ret &= SCDynamicStoreSetValue(ds, (CFStringRef)CFArrayGetValueAtIndex(list, i), dict);
}
if (!ret) {
fprintf(stderr, "Error writing IPv6 configuration\n");
}
}
CFRelease(addrArray);
CFRelease(prefixArray);
CFRelease(destArray);
CFRelease(flagsArray);
CFRelease(cfdev);
CFRelease(list);
CFRelease(dict);
CFRelease(ds);
CFRelease(key);
delete[] cfaddrs;
delete[] cfprefixes;
delete[] cfdestaddrs;
delete[] cfflags;
return ret;
}
bool MacDNSHelper::removeIps(uint64_t nwid)
{
SCDynamicStoreRef ds = SCDynamicStoreCreate(NULL, CFSTR("zerotier"), NULL, NULL);
char buf[256] = {0};
sprintf(buf, "State:/Network/Service/%.16llx/IPv6", nwid);
CFStringRef key = CFStringCreateWithCString(NULL, buf, kCFStringEncodingUTF8);
bool res = SCDynamicStoreRemoveValue(ds, key);
CFRelease(key);
CFRelease(ds);
return res;
}
}

1
osdep/MacEthernetTap.cpp
View File

@ -244,6 +244,7 @@ MacEthernetTap::~MacEthernetTap()
pid_t pid0,pid1;
MacDNSHelper::removeDNS(_nwid);
MacDNSHelper::removeIps(_nwid);
Mutex::Lock _gl(globalTapCreateLock);
::write(_shutdownSignalPipe[1],"\0",1); // causes thread to exit

11
service/OneService.cpp
View File

@ -1769,7 +1769,8 @@ public:
if (basePolicyStr.empty()) {
fprintf(stderr, "error: no base policy was specified for custom policy (%s)\n", customPolicyStr.c_str());
}
if (_node->bondController()->getPolicyCodeByStr(basePolicyStr) == ZT_BOND_POLICY_NONE) {
int basePolicyCode = _node->bondController()->getPolicyCodeByStr(basePolicyStr);
if (basePolicyCode == ZT_BOND_POLICY_NONE) {
fprintf(stderr, "error: custom policy (%s) is invalid, unknown base policy (%s).\n",
customPolicyStr.c_str(), basePolicyStr.c_str());
continue;
@ -1781,6 +1782,7 @@ public:
// New bond, used as a copy template for new instances
SharedPtr<Bond> newTemplateBond = new Bond(NULL, basePolicyStr, customPolicyStr, SharedPtr<Peer>());
// Acceptable ranges
newTemplateBond->setPolicy(basePolicyCode);
newTemplateBond->setMaxAcceptableLatency(OSUtils::jsonInt(customPolicy["maxAcceptableLatency"],-1));
newTemplateBond->setMaxAcceptableMeanLatency(OSUtils::jsonInt(customPolicy["maxAcceptableMeanLatency"],-1));
newTemplateBond->setMaxAcceptablePacketDelayVariance(OSUtils::jsonInt(customPolicy["maxAcceptablePacketDelayVariance"],-1));
@ -1805,7 +1807,7 @@ public:
newTemplateBond->setUpDelay(OSUtils::jsonInt(customPolicy["upDelay"],-1));
newTemplateBond->setDownDelay(OSUtils::jsonInt(customPolicy["downDelay"],-1));
newTemplateBond->setFlowRebalanceStrategy(OSUtils::jsonInt(customPolicy["flowRebalanceStrategy"],(uint64_t)0));
newTemplateBond->setFailoverInterval(OSUtils::jsonInt(customPolicy["failoverInterval"],(uint64_t)0));
newTemplateBond->setFailoverInterval(OSUtils::jsonInt(customPolicy["failoverInterval"],ZT_BOND_FAILOVER_DEFAULT_INTERVAL));
newTemplateBond->setPacketsPerLink(OSUtils::jsonInt(customPolicy["packetsPerLink"],-1));
// Policy-Specific link set
@ -2041,6 +2043,11 @@ public:
fprintf(stderr,"ERROR: unable to add ip address %s" ZT_EOL_S, ip->toString(ipbuf));
}
}
#ifdef __APPLE__
if (!MacDNSHelper::addIps(n.config.nwid, n.config.mac, n.tap->deviceName().c_str(), newManagedIps))
fprintf(stderr, "ERROR: unable to add v6 addresses to system configuration" ZT_EOL_S);
#endif
#endif
n.managedIps.swap(newManagedIps);
}