52 lines
919 B
Go
52 lines
919 B
Go
package tun
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import (
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"net/netip"
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"github.com/vishvananda/netlink"
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"gvisor.dev/gvisor/pkg/tcpip/link/tun"
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)
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func Open(name string) (uintptr, error) {
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tunFd, err := tun.Open(name)
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if err != nil {
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return 0, err
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}
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return uintptr(tunFd), nil
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}
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func Configure(name string, inet4Address netip.Prefix, inet6Address netip.Prefix, mtu uint32) error {
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tunLink, err := netlink.LinkByName(name)
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if err != nil {
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return err
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}
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if inet4Address.IsValid() {
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addr4, _ := netlink.ParseAddr(inet4Address.String())
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err = netlink.AddrAdd(tunLink, addr4)
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if err != nil {
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return err
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}
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}
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if inet6Address.IsValid() {
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addr6, _ := netlink.ParseAddr(inet6Address.String())
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err = netlink.AddrAdd(tunLink, addr6)
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if err != nil {
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return err
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}
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}
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err = netlink.LinkSetMTU(tunLink, int(mtu))
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if err != nil {
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return err
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}
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err = netlink.LinkSetUp(tunLink)
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if err != nil {
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return err
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}
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return nil
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}
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