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Potential fix for routing issue on Windows

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Move setting _initialized = true until after WindowsEthernetTap::threadMain() has actually created and brought up the adapter.  Also in OneService::nodeVirtualNetworkConfigFunction(), wait up to 5 seconds for WindowsEthernatTap::isInitialized() to return true before attempting to configure the interface and managed routes.  Without this, the adapter doesnt actually exist yet when trying to add routes
This commit is contained in:
Grant Limberg 2017-01-05 11:43:26 -08:00
parent aaf69d1aff
commit e2b1a7157e
3 changed files with 20 additions and 1 deletions

6
osdep/WindowsEthernetTap.cpp
View file

@ -640,7 +640,7 @@ WindowsEthernetTap::WindowsEthernetTap(
if (ConvertInterfaceGuidToLuid(&_deviceGuid,&_deviceLuid) != NO_ERROR)
throw std::runtime_error("unable to convert device interface GUID to LUID");
_initialized = true;
//_initialized = true;
if (friendlyName)
setFriendlyName(friendlyName);
@ -1007,6 +1007,10 @@ void WindowsEthernetTap::threadMain()
ReadFile(_tap,tapReadBuf,sizeof(tapReadBuf),NULL,&tapOvlRead);
bool writeInProgress = false;
ULONGLONG timeOfLastBorkCheck = GetTickCount64();
_initialized = true;
while (_run) {
DWORD waitResult = WaitForMultipleObjectsEx(writeInProgress ? 3 : 2,wait4,FALSE,2500,TRUE);
if (!_run) break; // will also break outer while(_run)

5
osdep/WindowsEthernetTap.hpp
View file

@ -110,12 +110,17 @@ public:
void threadMain()
throw();
bool isInitialized() const { return _initialized; };
private:
NET_IFINDEX _getDeviceIndex(); // throws on failure
std::vector<std::string> _getRegistryIPv4Value(const char *regKey);
void _setRegistryIPv4Value(const char *regKey,const std::vector<std::string> &value);
void _syncIps();
// clean up invalid values put into the windows registry
// void _cleanRegistry();
void (*_handler)(void *,uint64_t,const MAC &,const MAC &,unsigned int,unsigned int,const void *,unsigned int);
void *_arg;
MAC _mac;

10
service/OneService.cpp
View file

@ -1666,6 +1666,16 @@ public:
case ZT_VIRTUAL_NETWORK_CONFIG_OPERATION_CONFIG_UPDATE:
memcpy(&(n.config),nwc,sizeof(ZT_VirtualNetworkConfig));
if (n.tap) { // sanity check
#ifdef __WINDOWS__
// wait for up to 5 seconds for the WindowsEthernetTap to actually be initialized
//
// without WindowsEthernetTap::isInitialized() returning true, the won't actually
// be online yet and setting managed routes on it will fail.
const int MAX_SLEEP_COUNT = 500;
for (int i = 0; !n.tap->isInitialized() && i < MAX_SLEEP_COUNT; i++) {
Sleep(10);
}
#endif
syncManagedStuff(n,true,true);
} else {
_nets.erase(nwid);