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068a93d1f4
With the previous implementation, we check if route.MTU is greater than zero, but it will always be because we set it to the default MTU in parseUnsafeRoutes. This change leaves it as zero in parseUnsafeRoutes so it can be examined later.
63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
//go:build !e2e_testing
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// +build !e2e_testing
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package overlay
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import (
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"fmt"
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"net"
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"os"
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"path/filepath"
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"runtime"
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"syscall"
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"github.com/sirupsen/logrus"
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)
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func newTunFromFd(_ *logrus.Logger, _ int, _ *net.IPNet, _ int, _ []Route, _ int) (Device, error) {
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return nil, fmt.Errorf("newTunFromFd not supported in Windows")
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}
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func newTun(l *logrus.Logger, deviceName string, cidr *net.IPNet, defaultMTU int, routes []Route, _ int, _ bool) (Device, error) {
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if len(routes) > 0 {
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return nil, fmt.Errorf("route MTU not supported in Windows")
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}
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useWintun := true
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if err := checkWinTunExists(); err != nil {
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l.WithError(err).Warn("Check Wintun driver failed, fallback to wintap driver")
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useWintun = false
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}
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if useWintun {
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device, err := newWinTun(l, deviceName, cidr, defaultMTU, routes)
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if err != nil {
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return nil, fmt.Errorf("create Wintun interface failed, %w", err)
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}
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return device, nil
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}
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device, err := newWaterTun(l, cidr, defaultMTU, routes)
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if err != nil {
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return nil, fmt.Errorf("create wintap driver failed, %w", err)
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}
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return device, nil
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}
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func checkWinTunExists() error {
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myPath, err := os.Executable()
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if err != nil {
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return err
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}
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arch := runtime.GOARCH
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switch arch {
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case "386":
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//NOTE: wintun bundles 386 as x86
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arch = "x86"
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}
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_, err = syscall.LoadDLL(filepath.Join(filepath.Dir(myPath), "dist", "windows", "wintun", "bin", arch, "wintun.dll"))
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return err
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}
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