mirror of https://github.com/slackhq/nebula.git
75 lines
1.7 KiB
Go
75 lines
1.7 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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"io"
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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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type Tun struct {
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Device
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}
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func newTunFromFd(l *logrus.Logger, deviceFd int, cidr *net.IPNet, defaultMTU int, routes []Route, unsafeRoutes []Route, txQueueLen int) (ifce *Tun, err 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, unsafeRoutes []Route, txQueueLen int, multiqueue bool) (ifce *Tun, err 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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var inside Device
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if useWintun {
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inside, err = newWinTun(deviceName, cidr, defaultMTU, unsafeRoutes, txQueueLen)
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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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} else {
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inside, err = newWindowsWaterTun(deviceName, cidr, defaultMTU, unsafeRoutes, txQueueLen)
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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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}
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return &Tun{
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Device: inside,
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}, 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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func (t *Tun) NewMultiQueueReader() (io.ReadWriteCloser, error) {
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return nil, fmt.Errorf("TODO: multiqueue not implemented for windows")
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}
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