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-rw-r--r--main_windows.go2
-rw-r--r--tun/tun_windows.go13
2 files changed, 10 insertions, 5 deletions
diff --git a/main_windows.go b/main_windows.go
index 5380f56..f57bc8d 100644
--- a/main_windows.go
+++ b/main_windows.go
@@ -37,7 +37,7 @@ func main() {
logger.Info.Println("Starting wireguard-go version", device.WireGuardGoVersion)
logger.Debug.Println("Debug log enabled")
- tun, err := tun.CreateTUN(interfaceName)
+ tun, err := tun.CreateTUN(interfaceName, 0)
if err == nil {
realInterfaceName, err2 := tun.Name()
if err2 == nil {
diff --git a/tun/tun_windows.go b/tun/tun_windows.go
index 4b5da02..daad4aa 100644
--- a/tun/tun_windows.go
+++ b/tun/tun_windows.go
@@ -54,15 +54,15 @@ func nanotime() int64
// CreateTUN creates a Wintun interface with the given name. Should a Wintun
// interface with the same name exist, it is reused.
//
-func CreateTUN(ifname string) (Device, error) {
- return CreateTUNWithRequestedGUID(ifname, nil)
+func CreateTUN(ifname string, mtu int) (Device, error) {
+ return CreateTUNWithRequestedGUID(ifname, nil, mtu)
}
//
// CreateTUNWithRequestedGUID creates a Wintun interface with the given name and
// a requested GUID. Should a Wintun interface with the same name exist, it is reused.
//
-func CreateTUNWithRequestedGUID(ifname string, requestedGUID *windows.GUID) (Device, error) {
+func CreateTUNWithRequestedGUID(ifname string, requestedGUID *windows.GUID, mtu int) (Device, error) {
var err error
var wt *wintun.Interface
@@ -80,12 +80,17 @@ func CreateTUNWithRequestedGUID(ifname string, requestedGUID *windows.GUID) (Dev
return nil, fmt.Errorf("Error creating interface: %v", err)
}
+ forcedMTU := 1420
+ if mtu > 0 {
+ forcedMTU = mtu
+ }
+
tun := &NativeTun{
wt: wt,
handle: windows.InvalidHandle,
events: make(chan Event, 10),
errors: make(chan error, 1),
- forcedMTU: 1500,
+ forcedMTU: forcedMTU,
}
err = tun.rings.Init()