Chore: rename to fdbased

core/device/fdbased/open_linux.go

@@ -0,0 +1,26 @@
+package fdbased
+
+import (
+	"fmt"
+
+	"github.com/xjasonlyu/tun2socks/v2/core/device"
+
+	"gvisor.dev/gvisor/pkg/tcpip/link/fdbased"
+)
+
+func open(fd int, mtu uint32) (device.Device, error) {
+	f := &FD{fd: fd, mtu: mtu}
+
+	ep, err := fdbased.New(&fdbased.Options{
+		FDs: []int{fd},
+		MTU: mtu,
+		// TUN only, ignore ethernet header.
+		EthernetHeader: false,
+	})
+	if err != nil {
+		return nil, fmt.Errorf("create endpoint: %w", err)
+	}
+	f.LinkEndpoint = ep
+
+	return f, nil
+}