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Allow customizing MTU

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Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2018-10-27 01:03:28 +02:00
parent e1ebe64a47
commit 95fefbdb39
4 changed files with 16 additions and 8 deletions
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wireguard-go-bridge/src/api-ios.go
+2 -2
View File
@@ -79,7 +79,7 @@ func wgSetLogger(loggerFn uintptr) {
}
//export wgTurnOn
func wgTurnOn(ifnameRef string, settings string, readFn uintptr, writeFn uintptr, ctx uintptr) int32 {
func wgTurnOn(ifnameRef string, settings string, mtu uint16, readFn uintptr, writeFn uintptr, ctx uintptr) int32 {
interfaceName := string([]byte(ifnameRef))
logger := &Logger{
@@ -90,7 +90,7 @@ func wgTurnOn(ifnameRef string, settings string, readFn uintptr, writeFn uintptr
logger.Debug.Println("Debug log enabled")
tun := tun.CreateTUN(1280, unsafe.Pointer(readFn), unsafe.Pointer(writeFn), unsafe.Pointer(ctx))
tun := tun.CreateTUN(mtu, unsafe.Pointer(readFn), unsafe.Pointer(writeFn), unsafe.Pointer(ctx))
logger.Info.Println("Attaching to interface")
device := NewDevice(tun, logger)
wireguard-go-bridge/src/tun/tun_ios.go
+9 -2
View File
@@ -26,10 +26,17 @@ type nativeTun struct {
ctx unsafe.Pointer
}
func CreateTUN(mtu int, readFn unsafe.Pointer, writeFn unsafe.Pointer, ctx unsafe.Pointer) TUNDevice {
func CreateTUN(mtu uint16, readFn unsafe.Pointer, writeFn unsafe.Pointer, ctx unsafe.Pointer) TUNDevice {
if mtu == 0 {
/* 0 means automatic MTU, which iOS makes outerMTU-80-15. The 80 is for
* WireGuard and the 15 ensures our padding will work. Therefore, it's
* safe to have this code assume a massive MTU.
*/
mtu = ^mtu
}
tun := &nativeTun{
events: make(chan TUNEvent, 10),
mtu: mtu,
mtu: int(mtu),
readFn: readFn,
writeFn: writeFn,
ctx: ctx,