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Add flag to configure MTU

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This commit is contained in:
Viktor Liu
2025-07-23 21:53:31 +02:00
parent 91e7423989
commit b2dcad828c
42 changed files with 536 additions and 327 deletions
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2
client/cmd/root.go
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@@ -38,6 +38,7 @@ const (
extraIFaceBlackListFlag = "extra-iface-blacklist" extraIFaceBlackListFlag = "extra-iface-blacklist"
dnsRouteIntervalFlag = "dns-router-interval" dnsRouteIntervalFlag = "dns-router-interval"
enableLazyConnectionFlag = "enable-lazy-connection" enableLazyConnectionFlag = "enable-lazy-connection"
mtuFlag = "mtu"
) )
var ( var (
@@ -73,6 +74,7 @@ var (
anonymizeFlag bool anonymizeFlag bool
dnsRouteInterval time.Duration dnsRouteInterval time.Duration
lazyConnEnabled bool lazyConnEnabled bool
mtu int
rootCmd = &cobra.Command{ rootCmd = &cobra.Command{
Use: "netbird", Use: "netbird",

1
client/cmd/root_test.go
View File

@@ -54,6 +54,7 @@ func TestSetFlagsFromEnvVars(t *testing.T) {
cmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name") cmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name")
cmd.PersistentFlags().BoolVar(&rosenpassEnabled, enableRosenpassFlag, false, "Enable Rosenpass feature Rosenpass.") cmd.PersistentFlags().BoolVar(&rosenpassEnabled, enableRosenpassFlag, false, "Enable Rosenpass feature Rosenpass.")
cmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "Wireguard interface listening port") cmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "Wireguard interface listening port")
cmd.PersistentFlags().IntVar(&mtu, mtuFlag, iface.DefaultMTU, "Set MTU (Maximum Transmission Unit) for the WireGuard interface")
t.Setenv("NB_EXTERNAL_IP_MAP", "abc,dec") t.Setenv("NB_EXTERNAL_IP_MAP", "abc,dec")
t.Setenv("NB_INTERFACE_NAME", "test-name") t.Setenv("NB_INTERFACE_NAME", "test-name")

26
client/cmd/up.go
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@@ -54,6 +54,7 @@ func init() {
upCmd.PersistentFlags().BoolVarP(&foregroundMode, "foreground-mode", "F", false, "start service in foreground") upCmd.PersistentFlags().BoolVarP(&foregroundMode, "foreground-mode", "F", false, "start service in foreground")
upCmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name") upCmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name")
upCmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "Wireguard interface listening port") upCmd.PersistentFlags().Uint16Var(&wireguardPort, wireguardPortFlag, iface.DefaultWgPort, "Wireguard interface listening port")
upCmd.PersistentFlags().IntVar(&mtu, mtuFlag, iface.DefaultMTU, "Set MTU (Maximum Transmission Unit) for the WireGuard interface")
upCmd.PersistentFlags().BoolVarP(&networkMonitor, networkMonitorFlag, "N", networkMonitor, upCmd.PersistentFlags().BoolVarP(&networkMonitor, networkMonitorFlag, "N", networkMonitor,
`Manage network monitoring. Defaults to true on Windows and macOS, false on Linux and FreeBSD. `+ `Manage network monitoring. Defaults to true on Windows and macOS, false on Linux and FreeBSD. `+
`E.g. --network-monitor=false to disable or --network-monitor=true to enable.`, `E.g. --network-monitor=false to disable or --network-monitor=true to enable.`,
@@ -270,6 +271,13 @@ func setupConfig(customDNSAddressConverted []byte, cmd *cobra.Command) (*interna
ic.WireguardPort = &p ic.WireguardPort = &p
} }
if cmd.Flag(mtuFlag).Changed {
if err := validateMTU(mtu); err != nil {
return nil, err
}
ic.MTU = &mtu
}
if cmd.Flag(networkMonitorFlag).Changed { if cmd.Flag(networkMonitorFlag).Changed {
ic.NetworkMonitor = &networkMonitor ic.NetworkMonitor = &networkMonitor
} }
@@ -368,6 +376,14 @@ func setupLoginRequest(providedSetupKey string, customDNSAddressConverted []byte
loginRequest.WireguardPort = &wp loginRequest.WireguardPort = &wp
} }
if cmd.Flag(mtuFlag).Changed {
if err := validateMTU(mtu); err != nil {
return nil, err
}
m := int64(mtu)
loginRequest.Mtu = &m
}
if cmd.Flag(networkMonitorFlag).Changed { if cmd.Flag(networkMonitorFlag).Changed {
loginRequest.NetworkMonitor = &networkMonitor loginRequest.NetworkMonitor = &networkMonitor
} }
@@ -403,6 +419,16 @@ func setupLoginRequest(providedSetupKey string, customDNSAddressConverted []byte
return &loginRequest, nil return &loginRequest, nil
} }
func validateMTU(mtu int) error {
if mtu < iface.MinMTU {
return fmt.Errorf("MTU %d below minimum (%d bytes)", mtu, iface.MinMTU)
}
if mtu > iface.MaxMTU {
return fmt.Errorf("MTU %d exceeds maximum supported size (%d bytes)", mtu, iface.MaxMTU)
}
return nil
}
func validateNATExternalIPs(list []string) error { func validateNATExternalIPs(list []string) error {
for _, element := range list { for _, element := range list {
if element == "" { if element == "" {

9
client/iface/bind/ice_bind.go
View File

@@ -56,10 +56,11 @@ type ICEBind struct {
muUDPMux sync.Mutex muUDPMux sync.Mutex
udpMux *UniversalUDPMuxDefault udpMux *UniversalUDPMuxDefault
address wgaddr.Address address wgaddr.Address
mtu int
activityRecorder *ActivityRecorder activityRecorder *ActivityRecorder
} }
func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Address) *ICEBind { func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Address, mtu int) *ICEBind {
b, _ := wgConn.NewStdNetBind().(*wgConn.StdNetBind) b, _ := wgConn.NewStdNetBind().(*wgConn.StdNetBind)
ib := &ICEBind{ ib := &ICEBind{
StdNetBind: b, StdNetBind: b,
@@ -69,6 +70,7 @@ func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Ad
endpoints: make(map[netip.Addr]net.Conn), endpoints: make(map[netip.Addr]net.Conn),
closedChan: make(chan struct{}), closedChan: make(chan struct{}),
closed: true, closed: true,
mtu: mtu,
address: address, address: address,
activityRecorder: NewActivityRecorder(), activityRecorder: NewActivityRecorder(),
} }
@@ -80,6 +82,10 @@ func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Ad
return ib return ib
} }
func (s *ICEBind) MTU() int {
return s.mtu
}
func (s *ICEBind) Open(uport uint16) ([]wgConn.ReceiveFunc, uint16, error) { func (s *ICEBind) Open(uport uint16) ([]wgConn.ReceiveFunc, uint16, error) {
s.closed = false s.closed = false
s.closedChanMu.Lock() s.closedChanMu.Lock()
@@ -158,6 +164,7 @@ func (s *ICEBind) createIPv4ReceiverFn(pc *ipv4.PacketConn, conn *net.UDPConn, r
Net: s.transportNet, Net: s.transportNet,
FilterFn: s.filterFn, FilterFn: s.filterFn,
WGAddress: s.address, WGAddress: s.address,
MTU: s.mtu,
}, },
) )
return func(bufs [][]byte, sizes []int, eps []wgConn.Endpoint) (n int, err error) { return func(bufs [][]byte, sizes []int, eps []wgConn.Endpoint) (n int, err error) {

5
client/iface/bind/udp_mux_universal.go
View File

@@ -19,8 +19,10 @@ import (
"github.com/pion/transport/v3" "github.com/pion/transport/v3"
"github.com/netbirdio/netbird/client/iface/wgaddr" "github.com/netbirdio/netbird/client/iface/wgaddr"
"github.com/netbirdio/netbird/client/iface/bufsize"
) )
// FilterFn is a function that filters out candidates based on the address. // FilterFn is a function that filters out candidates based on the address.
// If it returns true, the address is to be filtered. It also returns the prefix of matching route. // If it returns true, the address is to be filtered. It also returns the prefix of matching route.
type FilterFn func(address netip.Addr) (bool, netip.Prefix, error) type FilterFn func(address netip.Addr) (bool, netip.Prefix, error)
@@ -44,6 +46,7 @@ type UniversalUDPMuxParams struct {
Net transport.Net Net transport.Net
FilterFn FilterFn FilterFn FilterFn
WGAddress wgaddr.Address WGAddress wgaddr.Address
MTU int
} }
// NewUniversalUDPMuxDefault creates an implementation of UniversalUDPMux embedding UDPMux // NewUniversalUDPMuxDefault creates an implementation of UniversalUDPMux embedding UDPMux
@@ -84,7 +87,7 @@ func NewUniversalUDPMuxDefault(params UniversalUDPMuxParams) *UniversalUDPMuxDef
// just ignore other packets printing an warning message. // just ignore other packets printing an warning message.
// It is a blocking method, consider running in a go routine. // It is a blocking method, consider running in a go routine.
func (m *UniversalUDPMuxDefault) ReadFromConn(ctx context.Context) { func (m *UniversalUDPMuxDefault) ReadFromConn(ctx context.Context) {
buf := make([]byte, 1500) buf := make([]byte, m.params.MTU+bufsize.WGBufferOverhead)
for { for {
select { select {
case <-ctx.Done(): case <-ctx.Done():

1
client/iface/device.go
View File

@@ -17,6 +17,7 @@ type WGTunDevice interface {
Up() (*bind.UniversalUDPMuxDefault, error) Up() (*bind.UniversalUDPMuxDefault, error)
UpdateAddr(address wgaddr.Address) error UpdateAddr(address wgaddr.Address) error
WgAddress() wgaddr.Address WgAddress() wgaddr.Address
MTU() int
DeviceName() string DeviceName() string
Close() error Close() error
FilteredDevice() *device.FilteredDevice FilteredDevice() *device.FilteredDevice

4
client/iface/device/device_android.go
View File

@@ -137,6 +137,10 @@ func (t *WGTunDevice) WgAddress() wgaddr.Address {
return t.address return t.address
} }
func (t *WGTunDevice) MTU() int {
return t.mtu
}
func (t *WGTunDevice) FilteredDevice() *FilteredDevice { func (t *WGTunDevice) FilteredDevice() *FilteredDevice {
return t.filteredDevice return t.filteredDevice
} }

4
client/iface/device/device_darwin.go
View File

@@ -111,6 +111,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address {
return t.address return t.address
} }
func (t *TunDevice) MTU() int {
return t.mtu
}
func (t *TunDevice) DeviceName() string { func (t *TunDevice) DeviceName() string {
return t.name return t.name
} }

4
client/iface/device/device_ios.go
View File

@@ -125,6 +125,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address {
return t.address return t.address
} }
func (t *TunDevice) MTU() int {
return t.mtu
}
func (t *TunDevice) UpdateAddr(_ wgaddr.Address) error { func (t *TunDevice) UpdateAddr(_ wgaddr.Address) error {
// todo implement // todo implement
return nil return nil

7
client/iface/device/device_kernel_unix.go
View File

@@ -95,7 +95,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
return nil, err return nil, err
} }
rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter()) rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter(), t.mtu)
if err != nil { if err != nil {
return nil, err return nil, err
} }
@@ -104,6 +104,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) {
Net: t.transportNet, Net: t.transportNet,
FilterFn: t.filterFn, FilterFn: t.filterFn,
WGAddress: t.address, WGAddress: t.address,
MTU: t.mtu,
} }
mux := bind.NewUniversalUDPMuxDefault(bindParams) mux := bind.NewUniversalUDPMuxDefault(bindParams)
go mux.ReadFromConn(t.ctx) go mux.ReadFromConn(t.ctx)
@@ -151,6 +152,10 @@ func (t *TunKernelDevice) WgAddress() wgaddr.Address {
return t.address return t.address
} }
func (t *TunKernelDevice) MTU() int {
return t.mtu
}
func (t *TunKernelDevice) DeviceName() string { func (t *TunKernelDevice) DeviceName() string {
return t.name return t.name
} }

4
client/iface/device/device_netstack.go
View File

@@ -125,6 +125,10 @@ func (t *TunNetstackDevice) WgAddress() wgaddr.Address {
return t.address return t.address
} }
func (t *TunNetstackDevice) MTU() int {
return t.mtu
}
func (t *TunNetstackDevice) DeviceName() string { func (t *TunNetstackDevice) DeviceName() string {
return t.name return t.name
} }

4
client/iface/device/device_usp_unix.go
View File

@@ -118,6 +118,10 @@ func (t *USPDevice) WgAddress() wgaddr.Address {
return t.address return t.address
} }
func (t *USPDevice) MTU() int {
return t.mtu
}
func (t *USPDevice) DeviceName() string { func (t *USPDevice) DeviceName() string {
return t.name return t.name
} }

4
client/iface/device/device_windows.go
View File

@@ -144,6 +144,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address {
return t.address return t.address
} }
func (t *TunDevice) MTU() int {
return t.mtu
}
func (t *TunDevice) DeviceName() string { func (t *TunDevice) DeviceName() string {
return t.name return t.name
} }

1
client/iface/device_android.go
View File

@@ -15,6 +15,7 @@ type WGTunDevice interface {
Up() (*bind.UniversalUDPMuxDefault, error) Up() (*bind.UniversalUDPMuxDefault, error)
UpdateAddr(address wgaddr.Address) error UpdateAddr(address wgaddr.Address) error
WgAddress() wgaddr.Address WgAddress() wgaddr.Address
MTU() int
DeviceName() string DeviceName() string
Close() error Close() error
FilteredDevice() *device.FilteredDevice FilteredDevice() *device.FilteredDevice

6
client/iface/iface.go
View File

@@ -26,6 +26,8 @@ import (
const ( const (
DefaultMTU = 1280 DefaultMTU = 1280
MinMTU = 576
MaxMTU = 8192
DefaultWgPort = 51820 DefaultWgPort = 51820
WgInterfaceDefault = configurer.WgInterfaceDefault WgInterfaceDefault = configurer.WgInterfaceDefault
) )
@@ -82,6 +84,10 @@ func (w *WGIface) Address() wgaddr.Address {
return w.tun.WgAddress() return w.tun.WgAddress()
} }
func (w *WGIface) MTU() int {
return w.tun.MTU()
}
// ToInterface returns the net.Interface for the Wireguard interface // ToInterface returns the net.Interface for the Wireguard interface
func (r *WGIface) ToInterface() *net.Interface { func (r *WGIface) ToInterface() *net.Interface {
name := r.tun.DeviceName() name := r.tun.DeviceName()

2
client/iface/iface_new_android.go
View File

@@ -14,7 +14,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
return nil, err return nil, err
} }
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
wgIFace := &WGIface{ wgIFace := &WGIface{
userspaceBind: true, userspaceBind: true,

2
client/iface/iface_new_darwin.go
View File

@@ -17,7 +17,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
return nil, err return nil, err
} }
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
var tun WGTunDevice var tun WGTunDevice
if netstack.IsEnabled() { if netstack.IsEnabled() {

2
client/iface/iface_new_ios.go
View File

@@ -16,7 +16,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
return nil, err return nil, err
} }
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
wgIFace := &WGIface{ wgIFace := &WGIface{
tun: device.NewTunDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, iceBind, opts.MobileArgs.TunFd), tun: device.NewTunDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, iceBind, opts.MobileArgs.TunFd),

6
client/iface/iface_new_unix.go
View File

@@ -22,7 +22,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
wgIFace := &WGIface{} wgIFace := &WGIface{}
if netstack.IsEnabled() { if netstack.IsEnabled() {
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
wgIFace.tun = device.NewNetstackDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind, netstack.ListenAddr()) wgIFace.tun = device.NewNetstackDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind, netstack.ListenAddr())
wgIFace.userspaceBind = true wgIFace.userspaceBind = true
wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind) wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind)
@@ -31,11 +31,11 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
if device.WireGuardModuleIsLoaded() { if device.WireGuardModuleIsLoaded() {
wgIFace.tun = device.NewKernelDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, opts.TransportNet) wgIFace.tun = device.NewKernelDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, opts.TransportNet)
wgIFace.wgProxyFactory = wgproxy.NewKernelFactory(opts.WGPort) wgIFace.wgProxyFactory = wgproxy.NewKernelFactory(opts.WGPort, opts.MTU)
return wgIFace, nil return wgIFace, nil
} }
if device.ModuleTunIsLoaded() { if device.ModuleTunIsLoaded() {
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
wgIFace.tun = device.NewUSPDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind) wgIFace.tun = device.NewUSPDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, opts.MTU, iceBind)
wgIFace.userspaceBind = true wgIFace.userspaceBind = true
wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind) wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind)

2
client/iface/iface_new_windows.go
View File

@@ -14,7 +14,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) {
if err != nil { if err != nil {
return nil, err return nil, err
} }
iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU)
var tun WGTunDevice var tun WGTunDevice
if netstack.IsEnabled() { if netstack.IsEnabled() {

3
client/iface/wgproxy/bind/proxy.go
View File

@@ -13,6 +13,7 @@ import (
"github.com/netbirdio/netbird/client/iface/bind" "github.com/netbirdio/netbird/client/iface/bind"
"github.com/netbirdio/netbird/client/iface/wgproxy/listener" "github.com/netbirdio/netbird/client/iface/wgproxy/listener"
"github.com/netbirdio/netbird/client/iface/bufsize"
) )
type ProxyBind struct { type ProxyBind struct {
@@ -135,7 +136,7 @@ func (p *ProxyBind) proxyToLocal(ctx context.Context) {
}() }()
for { for {
buf := make([]byte, 1500) buf := make([]byte, p.Bind.MTU()+bufsize.WGBufferOverhead)
n, err := p.remoteConn.Read(buf) n, err := p.remoteConn.Read(buf)
if err != nil { if err != nil {
if ctx.Err() != nil { if ctx.Err() != nil {

7
client/iface/wgproxy/ebpf/proxy.go
View File

@@ -20,6 +20,7 @@ import (
"github.com/netbirdio/netbird/client/internal/ebpf" "github.com/netbirdio/netbird/client/internal/ebpf"
ebpfMgr "github.com/netbirdio/netbird/client/internal/ebpf/manager" ebpfMgr "github.com/netbirdio/netbird/client/internal/ebpf/manager"
nbnet "github.com/netbirdio/netbird/util/net" nbnet "github.com/netbirdio/netbird/util/net"
"github.com/netbirdio/netbird/client/iface/bufsize"
) )
const ( const (
@@ -29,6 +30,7 @@ const (
// WGEBPFProxy definition for proxy with EBPF support // WGEBPFProxy definition for proxy with EBPF support
type WGEBPFProxy struct { type WGEBPFProxy struct {
localWGListenPort int localWGListenPort int
mtu int
ebpfManager ebpfMgr.Manager ebpfManager ebpfMgr.Manager
turnConnStore map[uint16]net.Conn turnConnStore map[uint16]net.Conn
@@ -43,10 +45,11 @@ type WGEBPFProxy struct {
} }
// NewWGEBPFProxy create new WGEBPFProxy instance // NewWGEBPFProxy create new WGEBPFProxy instance
func NewWGEBPFProxy(wgPort int) *WGEBPFProxy { func NewWGEBPFProxy(wgPort int, mtu int) *WGEBPFProxy {
log.Debugf("instantiate ebpf proxy") log.Debugf("instantiate ebpf proxy")
wgProxy := &WGEBPFProxy{ wgProxy := &WGEBPFProxy{
localWGListenPort: wgPort, localWGListenPort: wgPort,
mtu: mtu,
ebpfManager: ebpf.GetEbpfManagerInstance(), ebpfManager: ebpf.GetEbpfManagerInstance(),
turnConnStore: make(map[uint16]net.Conn), turnConnStore: make(map[uint16]net.Conn),
} }
@@ -138,7 +141,7 @@ func (p *WGEBPFProxy) Free() error {
// proxyToRemote read messages from local WireGuard interface and forward it to remote conn // proxyToRemote read messages from local WireGuard interface and forward it to remote conn
// From this go routine has only one instance. // From this go routine has only one instance.
func (p *WGEBPFProxy) proxyToRemote() { func (p *WGEBPFProxy) proxyToRemote() {
buf := make([]byte, 1500) buf := make([]byte, p.mtu+bufsize.WGBufferOverhead)
for p.ctx.Err() == nil { for p.ctx.Err() == nil {
if err := p.readAndForwardPacket(buf); err != nil { if err := p.readAndForwardPacket(buf); err != nil {
if p.ctx.Err() != nil { if p.ctx.Err() != nil {

3
client/iface/wgproxy/ebpf/wrapper.go
View File

@@ -13,6 +13,7 @@ import (
log "github.com/sirupsen/logrus" log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface/wgproxy/listener" "github.com/netbirdio/netbird/client/iface/wgproxy/listener"
"github.com/netbirdio/netbird/client/iface/bufsize"
) )
// ProxyWrapper help to keep the remoteConn instance for net.Conn.Close function call // ProxyWrapper help to keep the remoteConn instance for net.Conn.Close function call
@@ -103,7 +104,7 @@ func (e *ProxyWrapper) CloseConn() error {
func (p *ProxyWrapper) proxyToLocal(ctx context.Context) { func (p *ProxyWrapper) proxyToLocal(ctx context.Context) {
defer p.WgeBPFProxy.removeTurnConn(uint16(p.wgEndpointAddr.Port)) defer p.WgeBPFProxy.removeTurnConn(uint16(p.wgEndpointAddr.Port))
buf := make([]byte, 1500) buf := make([]byte, p.WgeBPFProxy.mtu+bufsize.WGBufferOverhead)
for { for {
n, err := p.readFromRemote(ctx, buf) n, err := p.readFromRemote(ctx, buf)
if err != nil { if err != nil {

8
client/iface/wgproxy/factory_kernel.go
View File

@@ -11,16 +11,18 @@ import (
type KernelFactory struct { type KernelFactory struct {
wgPort int wgPort int
mtu int
ebpfProxy *ebpf.WGEBPFProxy ebpfProxy *ebpf.WGEBPFProxy
} }
func NewKernelFactory(wgPort int) *KernelFactory { func NewKernelFactory(wgPort int, mtu int) *KernelFactory {
f := &KernelFactory{ f := &KernelFactory{
wgPort: wgPort, wgPort: wgPort,
mtu: mtu,
} }
ebpfProxy := ebpf.NewWGEBPFProxy(wgPort) ebpfProxy := ebpf.NewWGEBPFProxy(wgPort, mtu)
if err := ebpfProxy.Listen(); err != nil { if err := ebpfProxy.Listen(); err != nil {
log.Infof("WireGuard Proxy Factory will produce UDP proxy") log.Infof("WireGuard Proxy Factory will produce UDP proxy")
log.Warnf("failed to initialize ebpf proxy, fallback to user space proxy: %s", err) log.Warnf("failed to initialize ebpf proxy, fallback to user space proxy: %s", err)
@@ -33,7 +35,7 @@ func NewKernelFactory(wgPort int) *KernelFactory {
func (w *KernelFactory) GetProxy() Proxy { func (w *KernelFactory) GetProxy() Proxy {
if w.ebpfProxy == nil { if w.ebpfProxy == nil {
return udpProxy.NewWGUDPProxy(w.wgPort) return udpProxy.NewWGUDPProxy(w.wgPort, w.mtu)
} }
return ebpf.NewProxyWrapper(w.ebpfProxy) return ebpf.NewProxyWrapper(w.ebpfProxy)

6
client/iface/wgproxy/factory_kernel_freebsd.go
View File

@@ -9,19 +9,21 @@ import (
// KernelFactory todo: check eBPF support on FreeBSD // KernelFactory todo: check eBPF support on FreeBSD
type KernelFactory struct { type KernelFactory struct {
wgPort int wgPort int
mtu int
} }
func NewKernelFactory(wgPort int) *KernelFactory { func NewKernelFactory(wgPort int, mtu int) *KernelFactory {
log.Infof("WireGuard Proxy Factory will produce UDP proxy") log.Infof("WireGuard Proxy Factory will produce UDP proxy")
f := &KernelFactory{ f := &KernelFactory{
wgPort: wgPort, wgPort: wgPort,
mtu: mtu,
} }
return f return f
} }
func (w *KernelFactory) GetProxy() Proxy { func (w *KernelFactory) GetProxy() Proxy {
return udpProxy.NewWGUDPProxy(w.wgPort) return udpProxy.NewWGUDPProxy(w.wgPort, w.mtu)
} }
func (w *KernelFactory) Free() error { func (w *KernelFactory) Free() error {

2
client/iface/wgproxy/proxy_test.go
View File

@@ -84,7 +84,7 @@ func TestProxyCloseByRemoteConn(t *testing.T) {
}{ }{
{ {
name: "userspace proxy", name: "userspace proxy",
proxy: udpProxy.NewWGUDPProxy(51830), proxy: udpProxy.NewWGUDPProxy(51830, 1280),
}, },
} }

10
client/iface/wgproxy/udp/proxy.go
View File

@@ -13,11 +13,14 @@ import (
cerrors "github.com/netbirdio/netbird/client/errors" cerrors "github.com/netbirdio/netbird/client/errors"
"github.com/netbirdio/netbird/client/iface/wgproxy/listener" "github.com/netbirdio/netbird/client/iface/wgproxy/listener"
"github.com/netbirdio/netbird/client/iface/bufsize"
) )
// WGUDPProxy proxies // WGUDPProxy proxies
type WGUDPProxy struct { type WGUDPProxy struct {
localWGListenPort int localWGListenPort int
mtu int
remoteConn net.Conn remoteConn net.Conn
localConn net.Conn localConn net.Conn
@@ -34,10 +37,11 @@ type WGUDPProxy struct {
} }
// NewWGUDPProxy instantiate a UDP based WireGuard proxy. This is not a thread safe implementation // NewWGUDPProxy instantiate a UDP based WireGuard proxy. This is not a thread safe implementation
func NewWGUDPProxy(wgPort int) *WGUDPProxy { func NewWGUDPProxy(wgPort int, mtu int) *WGUDPProxy {
log.Debugf("Initializing new user space proxy with port %d", wgPort) log.Debugf("Initializing new user space proxy with port %d", wgPort)
p := &WGUDPProxy{ p := &WGUDPProxy{
localWGListenPort: wgPort, localWGListenPort: wgPort,
mtu: mtu,
closeListener: listener.NewCloseListener(), closeListener: listener.NewCloseListener(),
} }
return p return p
@@ -144,7 +148,7 @@ func (p *WGUDPProxy) proxyToRemote(ctx context.Context) {
} }
}() }()
buf := make([]byte, 1500) buf := make([]byte, p.mtu+bufsize.WGBufferOverhead)
for ctx.Err() == nil { for ctx.Err() == nil {
n, err := p.localConn.Read(buf) n, err := p.localConn.Read(buf)
if err != nil { if err != nil {
@@ -179,7 +183,7 @@ func (p *WGUDPProxy) proxyToLocal(ctx context.Context) {
} }
}() }()
buf := make([]byte, 1500) buf := make([]byte, p.mtu+bufsize.WGBufferOverhead)
for { for {
n, err := p.remoteConnRead(ctx, buf) n, err := p.remoteConnRead(ctx, buf)
if err != nil { if err != nil {

14
client/internal/config.go
View File

@@ -76,6 +76,8 @@ type ConfigInput struct {
DNSLabels domain.List DNSLabels domain.List
LazyConnectionEnabled *bool LazyConnectionEnabled *bool
MTU *int
} }
// Config Configuration type // Config Configuration type
@@ -142,6 +144,8 @@ type Config struct {
ClientCertKeyPair *tls.Certificate `json:"-"` ClientCertKeyPair *tls.Certificate `json:"-"`
LazyConnectionEnabled bool LazyConnectionEnabled bool
MTU int
} }
// ReadConfig read config file and return with Config. If it is not exists create a new with default values // ReadConfig read config file and return with Config. If it is not exists create a new with default values
@@ -548,6 +552,16 @@ func (config *Config) apply(input ConfigInput) (updated bool, err error) {
updated = true updated = true
} }
if input.MTU != nil && *input.MTU != config.MTU {
log.Infof("updating MTU to %d (old value %d)", *input.MTU, config.MTU)
config.MTU = *input.MTU
updated = true
} else if config.MTU == 0 {
config.MTU = iface.DefaultMTU
log.Infof("using default MTU %d", config.MTU)
updated = true
}
return updated, nil return updated, nil
} }

17
client/internal/connect.go
View File

@@ -17,6 +17,7 @@ import (
"google.golang.org/grpc/codes" "google.golang.org/grpc/codes"
gstatus "google.golang.org/grpc/status" gstatus "google.golang.org/grpc/status"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/client/iface/device" "github.com/netbirdio/netbird/client/iface/device"
"github.com/netbirdio/netbird/client/internal/dns" "github.com/netbirdio/netbird/client/internal/dns"
"github.com/netbirdio/netbird/client/internal/listener" "github.com/netbirdio/netbird/client/internal/listener"
@@ -442,6 +443,8 @@ func createEngineConfig(key wgtypes.Key, config *Config, peerConfig *mgmProto.Pe
BlockInbound: config.BlockInbound, BlockInbound: config.BlockInbound,
LazyConnectionEnabled: config.LazyConnectionEnabled, LazyConnectionEnabled: config.LazyConnectionEnabled,
MTU: selectMTU(config.MTU, peerConfig.Mtu),
} }
if config.PreSharedKey != "" { if config.PreSharedKey != "" {
@@ -464,6 +467,20 @@ func createEngineConfig(key wgtypes.Key, config *Config, peerConfig *mgmProto.Pe
return engineConf, nil return engineConf, nil
} }
func selectMTU(localMTU int, peerMTU int32) int {
finalMTU := iface.DefaultMTU
if localMTU > 0 {
finalMTU = localMTU
} else if peerMTU > 0 {
finalMTU = int(peerMTU)
}
// Set global DNS MTU
dns.SetCurrentMTU(finalMTU)
return finalMTU
}
// connectToSignal creates Signal Service client and established a connection // connectToSignal creates Signal Service client and established a connection
func connectToSignal(ctx context.Context, wtConfig *mgmProto.NetbirdConfig, ourPrivateKey wgtypes.Key) (*signal.GrpcClient, error) { func connectToSignal(ctx context.Context, wtConfig *mgmProto.NetbirdConfig, ourPrivateKey wgtypes.Key) (*signal.GrpcClient, error) {
var sigTLSEnabled bool var sigTLSEnabled bool

10
client/internal/dns/upstream.go
View File

@@ -25,6 +25,12 @@ import (
"github.com/netbirdio/netbird/client/proto" "github.com/netbirdio/netbird/client/proto"
) )
var currentMTU = iface.DefaultMTU
func SetCurrentMTU(mtu int) {
currentMTU = mtu
}
const ( const (
UpstreamTimeout = 15 * time.Second UpstreamTimeout = 15 * time.Second
@@ -346,8 +352,8 @@ func (u *upstreamResolverBase) testNameserver(server string, timeout time.Durati
// If the passed context is nil, this will use Exchange instead of ExchangeContext. // If the passed context is nil, this will use Exchange instead of ExchangeContext.
func ExchangeWithFallback(ctx context.Context, client *dns.Client, r *dns.Msg, upstream string) (*dns.Msg, time.Duration, error) { func ExchangeWithFallback(ctx context.Context, client *dns.Client, r *dns.Msg, upstream string) (*dns.Msg, time.Duration, error) {
// MTU - ip + udp headers // MTU - ip + udp headers
// Note: this could be sent out on an interface that is not ours, but our MTU should always be lower. // Note: this could be sent out on an interface that is not ours, but higher MTU settings could break truncation handling.
client.UDPSize = iface.DefaultMTU - (60 + 8) client.UDPSize = uint16(currentMTU - (60 + 8))
var ( var (
rm *dns.Msg rm *dns.Msg

4
client/internal/engine.go
View File

@@ -123,6 +123,8 @@ type EngineConfig struct {
BlockInbound bool BlockInbound bool
LazyConnectionEnabled bool LazyConnectionEnabled bool
MTU int
} }
// Engine is a mechanism responsible for reacting on Signal and Management stream events and managing connections to the remote peers. // Engine is a mechanism responsible for reacting on Signal and Management stream events and managing connections to the remote peers.
@@ -1526,7 +1528,7 @@ func (e *Engine) newWgIface() (*iface.WGIface, error) {
Address: e.config.WgAddr, Address: e.config.WgAddr,
WGPort: e.config.WgPort, WGPort: e.config.WgPort,
WGPrivKey: e.config.WgPrivateKey.String(), WGPrivKey: e.config.WgPrivateKey.String(),
MTU: iface.DefaultMTU, MTU: e.config.MTU,
TransportNet: transportNet, TransportNet: transportNet,
FilterFn: e.addrViaRoutes, FilterFn: e.addrViaRoutes,
DisableDNS: e.config.DisableDNS, DisableDNS: e.config.DisableDNS,

2
client/internal/engine_test.go
View File

@@ -409,7 +409,7 @@ func TestEngine_UpdateNetworkMap(t *testing.T) {
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
} }
engine.udpMux = bind.NewUniversalUDPMuxDefault(bind.UniversalUDPMuxParams{UDPConn: conn}) engine.udpMux = bind.NewUniversalUDPMuxDefault(bind.UniversalUDPMuxParams{UDPConn: conn, MTU: 1280})
engine.ctx = ctx engine.ctx = ctx
engine.srWatcher = guard.NewSRWatcher(nil, nil, nil, icemaker.Config{}) engine.srWatcher = guard.NewSRWatcher(nil, nil, nil, icemaker.Config{})
engine.connMgr = NewConnMgr(engine.config, engine.statusRecorder, engine.peerStore, wgIface) engine.connMgr = NewConnMgr(engine.config, engine.statusRecorder, engine.peerStore, wgIface)

2
client/internal/routemanager/systemops/systemops_windows.go
View File

@@ -295,7 +295,7 @@ func createIPForwardEntry2(route *MIB_IPFORWARD_ROW2) error {
if e1 != 0 { if e1 != 0 {
return fmt.Errorf("CreateIpForwardEntry2: %w", e1) return fmt.Errorf("CreateIpForwardEntry2: %w", e1)
} }
return fmt.Errorf("CreateIpForwardEntry2: code %d", r1) return fmt.Errorf("CreateIpForwardEntry2: code %d", windows.NTStatus(r1))
} }
return nil return nil
} }

41
client/proto/daemon.pb.go
View File

@@ -276,6 +276,7 @@ type LoginRequest struct {
CleanDNSLabels bool `protobuf:"varint,27,opt,name=cleanDNSLabels,proto3" json:"cleanDNSLabels,omitempty"` CleanDNSLabels bool `protobuf:"varint,27,opt,name=cleanDNSLabels,proto3" json:"cleanDNSLabels,omitempty"`
LazyConnectionEnabled *bool `protobuf:"varint,28,opt,name=lazyConnectionEnabled,proto3,oneof" json:"lazyConnectionEnabled,omitempty"` LazyConnectionEnabled *bool `protobuf:"varint,28,opt,name=lazyConnectionEnabled,proto3,oneof" json:"lazyConnectionEnabled,omitempty"`
BlockInbound *bool `protobuf:"varint,29,opt,name=block_inbound,json=blockInbound,proto3,oneof" json:"block_inbound,omitempty"` BlockInbound *bool `protobuf:"varint,29,opt,name=block_inbound,json=blockInbound,proto3,oneof" json:"block_inbound,omitempty"`
Mtu *int64 `protobuf:"varint,30,opt,name=mtu,proto3,oneof" json:"mtu,omitempty"`
unknownFields protoimpl.UnknownFields unknownFields protoimpl.UnknownFields
sizeCache protoimpl.SizeCache sizeCache protoimpl.SizeCache
} }
@@ -514,6 +515,13 @@ func (x *LoginRequest) GetBlockInbound() bool {
return false return false
} }
func (x *LoginRequest) GetMtu() int64 {
if x != nil && x.Mtu != nil {
return *x.Mtu
}
return 0
}
type LoginResponse struct { type LoginResponse struct {
state protoimpl.MessageState `protogen:"open.v1"` state protoimpl.MessageState `protogen:"open.v1"`
NeedsSSOLogin bool `protobuf:"varint,1,opt,name=needsSSOLogin,proto3" json:"needsSSOLogin,omitempty"` NeedsSSOLogin bool `protobuf:"varint,1,opt,name=needsSSOLogin,proto3" json:"needsSSOLogin,omitempty"`
@@ -978,6 +986,7 @@ type GetConfigResponse struct {
AdminURL string `protobuf:"bytes,5,opt,name=adminURL,proto3" json:"adminURL,omitempty"` AdminURL string `protobuf:"bytes,5,opt,name=adminURL,proto3" json:"adminURL,omitempty"`
InterfaceName string `protobuf:"bytes,6,opt,name=interfaceName,proto3" json:"interfaceName,omitempty"` InterfaceName string `protobuf:"bytes,6,opt,name=interfaceName,proto3" json:"interfaceName,omitempty"`
WireguardPort int64 `protobuf:"varint,7,opt,name=wireguardPort,proto3" json:"wireguardPort,omitempty"` WireguardPort int64 `protobuf:"varint,7,opt,name=wireguardPort,proto3" json:"wireguardPort,omitempty"`
Mtu int64 `protobuf:"varint,8,opt,name=mtu,proto3" json:"mtu,omitempty"`
DisableAutoConnect bool `protobuf:"varint,9,opt,name=disableAutoConnect,proto3" json:"disableAutoConnect,omitempty"` DisableAutoConnect bool `protobuf:"varint,9,opt,name=disableAutoConnect,proto3" json:"disableAutoConnect,omitempty"`
ServerSSHAllowed bool `protobuf:"varint,10,opt,name=serverSSHAllowed,proto3" json:"serverSSHAllowed,omitempty"` ServerSSHAllowed bool `protobuf:"varint,10,opt,name=serverSSHAllowed,proto3" json:"serverSSHAllowed,omitempty"`
RosenpassEnabled bool `protobuf:"varint,11,opt,name=rosenpassEnabled,proto3" json:"rosenpassEnabled,omitempty"` RosenpassEnabled bool `protobuf:"varint,11,opt,name=rosenpassEnabled,proto3" json:"rosenpassEnabled,omitempty"`
@@ -1073,6 +1082,13 @@ func (x *GetConfigResponse) GetWireguardPort() int64 {
return 0 return 0
} }
func (x *GetConfigResponse) GetMtu() int64 {
if x != nil {
return x.Mtu
}
return 0
}
func (x *GetConfigResponse) GetDisableAutoConnect() bool { func (x *GetConfigResponse) GetDisableAutoConnect() bool {
if x != nil { if x != nil {
return x.DisableAutoConnect return x.DisableAutoConnect
@@ -1177,6 +1193,7 @@ type PeerState struct {
Networks []string `protobuf:"bytes,16,rep,name=networks,proto3" json:"networks,omitempty"` Networks []string `protobuf:"bytes,16,rep,name=networks,proto3" json:"networks,omitempty"`
Latency *durationpb.Duration `protobuf:"bytes,17,opt,name=latency,proto3" json:"latency,omitempty"` Latency *durationpb.Duration `protobuf:"bytes,17,opt,name=latency,proto3" json:"latency,omitempty"`
RelayAddress string `protobuf:"bytes,18,opt,name=relayAddress,proto3" json:"relayAddress,omitempty"` RelayAddress string `protobuf:"bytes,18,opt,name=relayAddress,proto3" json:"relayAddress,omitempty"`
ConnectionType string `protobuf:"bytes,19,opt,name=connectionType,proto3" json:"connectionType,omitempty"`
unknownFields protoimpl.UnknownFields unknownFields protoimpl.UnknownFields
sizeCache protoimpl.SizeCache sizeCache protoimpl.SizeCache
} }
@@ -1331,10 +1348,10 @@ func (x *PeerState) GetRelayAddress() string {
} }
func (x *PeerState) GetConnectionType() string { func (x *PeerState) GetConnectionType() string {
if x.Relayed { if x != nil {
return "Relayed" return x.ConnectionType
} }
return "P2P" return ""
} }
// LocalPeerState contains the latest state of the local peer // LocalPeerState contains the latest state of the local peer
@@ -3567,7 +3584,7 @@ var File_daemon_proto protoreflect.FileDescriptor
const file_daemon_proto_rawDesc = "" + const file_daemon_proto_rawDesc = "" +
"\n" + "\n" +
"\fdaemon.proto\x12\x06daemon\x1a google/protobuf/descriptor.proto\x1a\x1fgoogle/protobuf/timestamp.proto\x1a\x1egoogle/protobuf/duration.proto\"\x0e\n" + "\fdaemon.proto\x12\x06daemon\x1a google/protobuf/descriptor.proto\x1a\x1fgoogle/protobuf/timestamp.proto\x1a\x1egoogle/protobuf/duration.proto\"\x0e\n" +
"\fEmptyRequest\"\xbf\r\n" + "\fEmptyRequest\"\xde\r\n" +
"\fLoginRequest\x12\x1a\n" + "\fLoginRequest\x12\x1a\n" +
"\bsetupKey\x18\x01 \x01(\tR\bsetupKey\x12&\n" + "\bsetupKey\x18\x01 \x01(\tR\bsetupKey\x12&\n" +
"\fpreSharedKey\x18\x02 \x01(\tB\x02\x18\x01R\fpreSharedKey\x12$\n" + "\fpreSharedKey\x18\x02 \x01(\tB\x02\x18\x01R\fpreSharedKey\x12$\n" +
@@ -3601,7 +3618,8 @@ const file_daemon_proto_rawDesc = "" +
"dns_labels\x18\x1a \x03(\tR\tdnsLabels\x12&\n" + "dns_labels\x18\x1a \x03(\tR\tdnsLabels\x12&\n" +
"\x0ecleanDNSLabels\x18\x1b \x01(\bR\x0ecleanDNSLabels\x129\n" + "\x0ecleanDNSLabels\x18\x1b \x01(\bR\x0ecleanDNSLabels\x129\n" +
"\x15lazyConnectionEnabled\x18\x1c \x01(\bH\x0fR\x15lazyConnectionEnabled\x88\x01\x01\x12(\n" + "\x15lazyConnectionEnabled\x18\x1c \x01(\bH\x0fR\x15lazyConnectionEnabled\x88\x01\x01\x12(\n" +
"\rblock_inbound\x18\x1d \x01(\bH\x10R\fblockInbound\x88\x01\x01B\x13\n" + "\rblock_inbound\x18\x1d \x01(\bH\x10R\fblockInbound\x88\x01\x01\x12\x15\n" +
"\x03mtu\x18\x1e \x01(\x03H\x11R\x03mtu\x88\x01\x01B\x13\n" +
"\x11_rosenpassEnabledB\x10\n" + "\x11_rosenpassEnabledB\x10\n" +
"\x0e_interfaceNameB\x10\n" + "\x0e_interfaceNameB\x10\n" +
"\x0e_wireguardPortB\x17\n" + "\x0e_wireguardPortB\x17\n" +
@@ -3618,7 +3636,8 @@ const file_daemon_proto_rawDesc = "" +
"\x11_block_lan_accessB\x18\n" + "\x11_block_lan_accessB\x18\n" +
"\x16_disable_notificationsB\x18\n" + "\x16_disable_notificationsB\x18\n" +
"\x16_lazyConnectionEnabledB\x10\n" + "\x16_lazyConnectionEnabledB\x10\n" +
"\x0e_block_inbound\"\xb5\x01\n" + "\x0e_block_inboundB\x06\n" +
"\x04_mtu\"\xb5\x01\n" +
"\rLoginResponse\x12$\n" + "\rLoginResponse\x12$\n" +
"\rneedsSSOLogin\x18\x01 \x01(\bR\rneedsSSOLogin\x12\x1a\n" + "\rneedsSSOLogin\x18\x01 \x01(\bR\rneedsSSOLogin\x12\x1a\n" +
"\buserCode\x18\x02 \x01(\tR\buserCode\x12(\n" + "\buserCode\x18\x02 \x01(\tR\buserCode\x12(\n" +
@@ -3642,7 +3661,7 @@ const file_daemon_proto_rawDesc = "" +
"\rdaemonVersion\x18\x03 \x01(\tR\rdaemonVersion\"\r\n" + "\rdaemonVersion\x18\x03 \x01(\tR\rdaemonVersion\"\r\n" +
"\vDownRequest\"\x0e\n" + "\vDownRequest\"\x0e\n" +
"\fDownResponse\"\x12\n" + "\fDownResponse\"\x12\n" +
"\x10GetConfigRequest\"\xa3\x06\n" + "\x10GetConfigRequest\"\xb5\x06\n" +
"\x11GetConfigResponse\x12$\n" + "\x11GetConfigResponse\x12$\n" +
"\rmanagementUrl\x18\x01 \x01(\tR\rmanagementUrl\x12\x1e\n" + "\rmanagementUrl\x18\x01 \x01(\tR\rmanagementUrl\x12\x1e\n" +
"\n" + "\n" +
@@ -3652,7 +3671,8 @@ const file_daemon_proto_rawDesc = "" +
"\fpreSharedKey\x18\x04 \x01(\tR\fpreSharedKey\x12\x1a\n" + "\fpreSharedKey\x18\x04 \x01(\tR\fpreSharedKey\x12\x1a\n" +
"\badminURL\x18\x05 \x01(\tR\badminURL\x12$\n" + "\badminURL\x18\x05 \x01(\tR\badminURL\x12$\n" +
"\rinterfaceName\x18\x06 \x01(\tR\rinterfaceName\x12$\n" + "\rinterfaceName\x18\x06 \x01(\tR\rinterfaceName\x12$\n" +
"\rwireguardPort\x18\a \x01(\x03R\rwireguardPort\x12.\n" + "\rwireguardPort\x18\a \x01(\x03R\rwireguardPort\x12\x10\n" +
"\x03mtu\x18\b \x01(\x03R\x03mtu\x12.\n" +
"\x12disableAutoConnect\x18\t \x01(\bR\x12disableAutoConnect\x12*\n" + "\x12disableAutoConnect\x18\t \x01(\bR\x12disableAutoConnect\x12*\n" +
"\x10serverSSHAllowed\x18\n" + "\x10serverSSHAllowed\x18\n" +
" \x01(\bR\x10serverSSHAllowed\x12*\n" + " \x01(\bR\x10serverSSHAllowed\x12*\n" +
@@ -3666,7 +3686,7 @@ const file_daemon_proto_rawDesc = "" +
"disableDns\x122\n" + "disableDns\x122\n" +
"\x15disable_client_routes\x18\x12 \x01(\bR\x13disableClientRoutes\x122\n" + "\x15disable_client_routes\x18\x12 \x01(\bR\x13disableClientRoutes\x122\n" +
"\x15disable_server_routes\x18\x13 \x01(\bR\x13disableServerRoutes\x12(\n" + "\x15disable_server_routes\x18\x13 \x01(\bR\x13disableServerRoutes\x12(\n" +
"\x10block_lan_access\x18\x14 \x01(\bR\x0eblockLanAccess\"\xde\x05\n" + "\x10block_lan_access\x18\x14 \x01(\bR\x0eblockLanAccess\"\x86\x06\n" +
"\tPeerState\x12\x0e\n" + "\tPeerState\x12\x0e\n" +
"\x02IP\x18\x01 \x01(\tR\x02IP\x12\x16\n" + "\x02IP\x18\x01 \x01(\tR\x02IP\x12\x16\n" +
"\x06pubKey\x18\x02 \x01(\tR\x06pubKey\x12\x1e\n" + "\x06pubKey\x18\x02 \x01(\tR\x06pubKey\x12\x1e\n" +
@@ -3687,7 +3707,8 @@ const file_daemon_proto_rawDesc = "" +
"\x10rosenpassEnabled\x18\x0f \x01(\bR\x10rosenpassEnabled\x12\x1a\n" + "\x10rosenpassEnabled\x18\x0f \x01(\bR\x10rosenpassEnabled\x12\x1a\n" +
"\bnetworks\x18\x10 \x03(\tR\bnetworks\x123\n" + "\bnetworks\x18\x10 \x03(\tR\bnetworks\x123\n" +
"\alatency\x18\x11 \x01(\v2\x19.google.protobuf.DurationR\alatency\x12\"\n" + "\alatency\x18\x11 \x01(\v2\x19.google.protobuf.DurationR\alatency\x12\"\n" +
"\frelayAddress\x18\x12 \x01(\tR\frelayAddress\"\xf0\x01\n" + "\frelayAddress\x18\x12 \x01(\tR\frelayAddress\x12&\n" +
"\x0econnectionType\x18\x13 \x01(\tR\x0econnectionType\"\xf0\x01\n" +
"\x0eLocalPeerState\x12\x0e\n" + "\x0eLocalPeerState\x12\x0e\n" +
"\x02IP\x18\x01 \x01(\tR\x02IP\x12\x16\n" + "\x02IP\x18\x01 \x01(\tR\x02IP\x12\x16\n" +
"\x06pubKey\x18\x02 \x01(\tR\x06pubKey\x12(\n" + "\x06pubKey\x18\x02 \x01(\tR\x06pubKey\x12(\n" +

5
client/proto/daemon.proto
View File

@@ -136,6 +136,8 @@ message LoginRequest {
optional bool lazyConnectionEnabled = 28; optional bool lazyConnectionEnabled = 28;
optional bool block_inbound = 29; optional bool block_inbound = 29;
optional int64 mtu = 30;
} }
message LoginResponse { message LoginResponse {
@@ -195,6 +197,8 @@ message GetConfigResponse {
int64 wireguardPort = 7; int64 wireguardPort = 7;
int64 mtu = 8;
bool disableAutoConnect = 9; bool disableAutoConnect = 9;
bool serverSSHAllowed = 10; bool serverSSHAllowed = 10;
@@ -239,6 +243,7 @@ message PeerState {
repeated string networks = 16; repeated string networks = 16;
google.protobuf.Duration latency = 17; google.protobuf.Duration latency = 17;
string relayAddress = 18; string relayAddress = 18;
string connectionType = 19;
} }
// LocalPeerState contains the latest state of the local peer // LocalPeerState contains the latest state of the local peer

13
client/server/server.go
View File

@@ -428,6 +428,12 @@ func (s *Server) Login(callerCtx context.Context, msg *proto.LoginRequest) (*pro
s.latestConfigInput.LazyConnectionEnabled = msg.LazyConnectionEnabled s.latestConfigInput.LazyConnectionEnabled = msg.LazyConnectionEnabled
} }
if msg.Mtu != nil {
mtu := int(*msg.Mtu)
inputConfig.MTU = &mtu
s.latestConfigInput.MTU = &mtu
}
s.mutex.Unlock() s.mutex.Unlock()
if msg.OptionalPreSharedKey != nil { if msg.OptionalPreSharedKey != nil {
@@ -784,6 +790,7 @@ func (s *Server) GetConfig(_ context.Context, _ *proto.GetConfigRequest) (*proto
AdminURL: adminURL, AdminURL: adminURL,
InterfaceName: s.config.WgIface, InterfaceName: s.config.WgIface,
WireguardPort: int64(s.config.WgPort), WireguardPort: int64(s.config.WgPort),
Mtu: int64(s.config.MTU),
DisableAutoConnect: s.config.DisableAutoConnect, DisableAutoConnect: s.config.DisableAutoConnect,
ServerSSHAllowed: *s.config.ServerSSHAllowed, ServerSSHAllowed: *s.config.ServerSSHAllowed,
RosenpassEnabled: s.config.RosenpassEnabled, RosenpassEnabled: s.config.RosenpassEnabled,
@@ -841,6 +848,11 @@ func toProtoFullStatus(fullStatus peer.FullStatus) *proto.FullStatus {
pbFullStatus.LazyConnectionEnabled = fullStatus.LazyConnectionEnabled pbFullStatus.LazyConnectionEnabled = fullStatus.LazyConnectionEnabled
for _, peerState := range fullStatus.Peers { for _, peerState := range fullStatus.Peers {
connectionType := "P2P"
if peerState.Relayed {
connectionType = "Relayed"
}
pbPeerState := &proto.PeerState{ pbPeerState := &proto.PeerState{
IP: peerState.IP, IP: peerState.IP,
PubKey: peerState.PubKey, PubKey: peerState.PubKey,
@@ -859,6 +871,7 @@ func toProtoFullStatus(fullStatus peer.FullStatus) *proto.FullStatus {
RosenpassEnabled: peerState.RosenpassEnabled, RosenpassEnabled: peerState.RosenpassEnabled,
Networks: maps.Keys(peerState.GetRoutes()), Networks: maps.Keys(peerState.GetRoutes()),
Latency: durationpb.New(peerState.Latency), Latency: durationpb.New(peerState.Latency),
ConnectionType: connectionType,
} }
pbFullStatus.Peers = append(pbFullStatus.Peers, pbPeerState) pbFullStatus.Peers = append(pbFullStatus.Peers, pbPeerState)
} }

20
client/ui/client_ui.go
View File

@@ -34,6 +34,7 @@ import (
"google.golang.org/grpc" "google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure" "google.golang.org/grpc/credentials/insecure"
"github.com/netbirdio/netbird/client/iface"
"github.com/netbirdio/netbird/client/internal" "github.com/netbirdio/netbird/client/internal"
"github.com/netbirdio/netbird/client/proto" "github.com/netbirdio/netbird/client/proto"
"github.com/netbirdio/netbird/client/ui/desktop" "github.com/netbirdio/netbird/client/ui/desktop"
@@ -220,6 +221,7 @@ type serviceClient struct {
iPreSharedKey *widget.Entry iPreSharedKey *widget.Entry
iInterfaceName *widget.Entry iInterfaceName *widget.Entry
iInterfacePort *widget.Entry iInterfacePort *widget.Entry
iMTU *widget.Entry
// switch elements for settings form // switch elements for settings form
sRosenpassPermissive *widget.Check sRosenpassPermissive *widget.Check
@@ -236,6 +238,7 @@ type serviceClient struct {
RosenpassPermissive bool RosenpassPermissive bool
interfaceName string interfaceName string
interfacePort int interfacePort int
mtu int
networkMonitor bool networkMonitor bool
disableDNS bool disableDNS bool
disableClientRoutes bool disableClientRoutes bool
@@ -352,6 +355,7 @@ func (s *serviceClient) showSettingsUI() {
s.iPreSharedKey = widget.NewPasswordEntry() s.iPreSharedKey = widget.NewPasswordEntry()
s.iInterfaceName = widget.NewEntry() s.iInterfaceName = widget.NewEntry()
s.iInterfacePort = widget.NewEntry() s.iInterfacePort = widget.NewEntry()
s.iMTU = widget.NewEntry()
s.sRosenpassPermissive = widget.NewCheck("Enable Rosenpass permissive mode", nil) s.sRosenpassPermissive = widget.NewCheck("Enable Rosenpass permissive mode", nil)
@@ -376,6 +380,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
{Text: "Quantum-Resistance", Widget: s.sRosenpassPermissive}, {Text: "Quantum-Resistance", Widget: s.sRosenpassPermissive},
{Text: "Interface Name", Widget: s.iInterfaceName}, {Text: "Interface Name", Widget: s.iInterfaceName},
{Text: "Interface Port", Widget: s.iInterfacePort}, {Text: "Interface Port", Widget: s.iInterfacePort},
{Text: "MTU", Widget: s.iMTU},
{Text: "Management URL", Widget: s.iMngURL}, {Text: "Management URL", Widget: s.iMngURL},
{Text: "Admin URL", Widget: s.iAdminURL}, {Text: "Admin URL", Widget: s.iAdminURL},
{Text: "Pre-shared Key", Widget: s.iPreSharedKey}, {Text: "Pre-shared Key", Widget: s.iPreSharedKey},
@@ -403,6 +408,16 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
return return
} }
mtu, err := strconv.ParseInt(s.iMTU.Text, 10, 64)
if err != nil {
dialog.ShowError(errors.New("Invalid MTU value"), s.wSettings)
return
}
if mtu < iface.MinMTU || mtu > iface.MaxMTU {
dialog.ShowError(fmt.Errorf("MTU must be between %d and %d bytes", iface.MinMTU, iface.MaxMTU), s.wSettings)
return
}
iAdminURL := strings.TrimSpace(s.iAdminURL.Text) iAdminURL := strings.TrimSpace(s.iAdminURL.Text)
iMngURL := strings.TrimSpace(s.iMngURL.Text) iMngURL := strings.TrimSpace(s.iMngURL.Text)
@@ -412,7 +427,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
if s.managementURL != iMngURL || s.preSharedKey != s.iPreSharedKey.Text || if s.managementURL != iMngURL || s.preSharedKey != s.iPreSharedKey.Text ||
s.adminURL != iAdminURL || s.RosenpassPermissive != s.sRosenpassPermissive.Checked || s.adminURL != iAdminURL || s.RosenpassPermissive != s.sRosenpassPermissive.Checked ||
s.interfaceName != s.iInterfaceName.Text || s.interfacePort != int(port) || s.interfaceName != s.iInterfaceName.Text || s.interfacePort != int(port) ||
s.networkMonitor != s.sNetworkMonitor.Checked || s.mtu != int(mtu) || s.networkMonitor != s.sNetworkMonitor.Checked ||
s.disableDNS != s.sDisableDNS.Checked || s.disableDNS != s.sDisableDNS.Checked ||
s.disableClientRoutes != s.sDisableClientRoutes.Checked || s.disableClientRoutes != s.sDisableClientRoutes.Checked ||
s.disableServerRoutes != s.sDisableServerRoutes.Checked || s.disableServerRoutes != s.sDisableServerRoutes.Checked ||
@@ -429,6 +444,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form {
RosenpassPermissive: &s.sRosenpassPermissive.Checked, RosenpassPermissive: &s.sRosenpassPermissive.Checked,
InterfaceName: &s.iInterfaceName.Text, InterfaceName: &s.iInterfaceName.Text,
WireguardPort: &port, WireguardPort: &port,
Mtu: &mtu,
NetworkMonitor: &s.sNetworkMonitor.Checked, NetworkMonitor: &s.sNetworkMonitor.Checked,
DisableDns: &s.sDisableDNS.Checked, DisableDns: &s.sDisableDNS.Checked,
DisableClientRoutes: &s.sDisableClientRoutes.Checked, DisableClientRoutes: &s.sDisableClientRoutes.Checked,
@@ -822,6 +838,7 @@ func (s *serviceClient) getSrvConfig() {
s.RosenpassPermissive = cfg.RosenpassPermissive s.RosenpassPermissive = cfg.RosenpassPermissive
s.interfaceName = cfg.InterfaceName s.interfaceName = cfg.InterfaceName
s.interfacePort = int(cfg.WireguardPort) s.interfacePort = int(cfg.WireguardPort)
s.mtu = int(cfg.Mtu)
s.networkMonitor = cfg.NetworkMonitor s.networkMonitor = cfg.NetworkMonitor
s.disableDNS = cfg.DisableDns s.disableDNS = cfg.DisableDns
@@ -837,6 +854,7 @@ func (s *serviceClient) getSrvConfig() {
s.iPreSharedKey.SetText(cfg.PreSharedKey) s.iPreSharedKey.SetText(cfg.PreSharedKey)
s.iInterfaceName.SetText(cfg.InterfaceName) s.iInterfaceName.SetText(cfg.InterfaceName)
s.iInterfacePort.SetText(strconv.Itoa(int(cfg.WireguardPort))) s.iInterfacePort.SetText(strconv.Itoa(int(cfg.WireguardPort)))
s.iMTU.SetText(strconv.Itoa(int(cfg.Mtu)))
s.sRosenpassPermissive.SetChecked(cfg.RosenpassPermissive) s.sRosenpassPermissive.SetChecked(cfg.RosenpassPermissive)
if !cfg.RosenpassEnabled { if !cfg.RosenpassEnabled {
s.sRosenpassPermissive.Disable() s.sRosenpassPermissive.Disable()

569
management/proto/management.pb.go
View File

@@ -1,7 +1,7 @@
// Code generated by protoc-gen-go. DO NOT EDIT. // Code generated by protoc-gen-go. DO NOT EDIT.
// versions: // versions:
// protoc-gen-go v1.26.0 // protoc-gen-go v1.26.0
// protoc v3.21.12 // protoc v4.24.3
// source: management.proto // source: management.proto
package proto package proto
@@ -1649,6 +1649,7 @@ type PeerConfig struct {
Fqdn string `protobuf:"bytes,4,opt,name=fqdn,proto3" json:"fqdn,omitempty"` Fqdn string `protobuf:"bytes,4,opt,name=fqdn,proto3" json:"fqdn,omitempty"`
RoutingPeerDnsResolutionEnabled bool `protobuf:"varint,5,opt,name=RoutingPeerDnsResolutionEnabled,proto3" json:"RoutingPeerDnsResolutionEnabled,omitempty"` RoutingPeerDnsResolutionEnabled bool `protobuf:"varint,5,opt,name=RoutingPeerDnsResolutionEnabled,proto3" json:"RoutingPeerDnsResolutionEnabled,omitempty"`
LazyConnectionEnabled bool `protobuf:"varint,6,opt,name=LazyConnectionEnabled,proto3" json:"LazyConnectionEnabled,omitempty"` LazyConnectionEnabled bool `protobuf:"varint,6,opt,name=LazyConnectionEnabled,proto3" json:"LazyConnectionEnabled,omitempty"`
Mtu int32 `protobuf:"varint,7,opt,name=mtu,proto3" json:"mtu,omitempty"`
} }
func (x *PeerConfig) Reset() { func (x *PeerConfig) Reset() {
@@ -1725,6 +1726,13 @@ func (x *PeerConfig) GetLazyConnectionEnabled() bool {
return false return false
} }
func (x *PeerConfig) GetMtu() int32 {
if x != nil {
return x.Mtu
}
return 0
}
// NetworkMap represents a network state of the peer with the corresponding configuration parameters to establish peer-to-peer connections // NetworkMap represents a network state of the peer with the corresponding configuration parameters to establish peer-to-peer connections
type NetworkMap struct { type NetworkMap struct {
state protoimpl.MessageState state protoimpl.MessageState
@@ -3560,7 +3568,7 @@ var file_management_proto_rawDesc = []byte{
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@@ -3576,290 +3584,291 @@ var file_management_proto_rawDesc = []byte{
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} }
var ( var (

2
management/proto/management.proto
View File

@@ -261,6 +261,8 @@ message PeerConfig {
bool RoutingPeerDnsResolutionEnabled = 5; bool RoutingPeerDnsResolutionEnabled = 5;
bool LazyConnectionEnabled = 6; bool LazyConnectionEnabled = 6;
int32 mtu = 7;
} }
// NetworkMap represents a network state of the peer with the corresponding configuration parameters to establish peer-to-peer connections // NetworkMap represents a network state of the peer with the corresponding configuration parameters to establish peer-to-peer connections

6
relay/testec2/tun/proxy.go
View File

@@ -7,6 +7,8 @@ import (
"sync/atomic" "sync/atomic"
log "github.com/sirupsen/logrus" log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface"
) )
type Proxy struct { type Proxy struct {
@@ -26,7 +28,7 @@ func (p *Proxy) Close() {
} }
func (p *Proxy) readFromDevice() { func (p *Proxy) readFromDevice() {
buf := make([]byte, 1500) buf := make([]byte, iface.MaxMTU)
for { for {
n, err := p.Device.Read(buf) n, err := p.Device.Read(buf)
if err != nil { if err != nil {
@@ -49,7 +51,7 @@ func (p *Proxy) readFromDevice() {
} }
func (p *Proxy) readFromConn() { func (p *Proxy) readFromConn() {
buf := make([]byte, 1500) buf := make([]byte, iface.MaxMTU)
for { for {
n, _, err := p.PConn.ReadFrom(buf) n, _, err := p.PConn.ReadFrom(buf)
if err != nil { if err != nil {

3
sharedsock/example/main.go
View File

@@ -6,13 +6,14 @@ import (
"os/signal" "os/signal"
"github.com/netbirdio/netbird/sharedsock" "github.com/netbirdio/netbird/sharedsock"
"github.com/netbirdio/netbird/client/iface"
log "github.com/sirupsen/logrus" log "github.com/sirupsen/logrus"
) )
func main() { func main() {
port := 51820 port := 51820
rawSock, err := sharedsock.Listen(port, sharedsock.NewIncomingSTUNFilter()) rawSock, err := sharedsock.Listen(port, sharedsock.NewIncomingSTUNFilter(), iface.DefaultMTU)
if err != nil { if err != nil {
panic(err) panic(err)
} }

14
sharedsock/sock_linux.go
View File

@@ -36,6 +36,7 @@ type SharedSocket struct {
conn4 *socket.Conn conn4 *socket.Conn
conn6 *socket.Conn conn6 *socket.Conn
port int port int
mtu int
routerMux sync.RWMutex routerMux sync.RWMutex
router routing.Router router routing.Router
packetDemux chan rcvdPacket packetDemux chan rcvdPacket
@@ -56,12 +57,19 @@ var writeSerializerOptions = gopacket.SerializeOptions{
FixLengths: true, FixLengths: true,
} }
// Maximum overhead for IP + UDP headers on raw socket
// IPv4: max 60 bytes (20 base + 40 options) + UDP 8 bytes = 68 bytes
// IPv6: 40 bytes + UDP 8 bytes = 48 bytes
// We use the maximum (68) for both IPv4 and IPv6
const maxIPUDPOverhead = 68
// Listen creates an IPv4 and IPv6 raw sockets, starts a reader and routing table routines // Listen creates an IPv4 and IPv6 raw sockets, starts a reader and routing table routines
func Listen(port int, filter BPFFilter) (_ net.PacketConn, err error) { func Listen(port int, filter BPFFilter, mtu int) (_ net.PacketConn, err error) {
ctx, cancel := context.WithCancel(context.Background()) ctx, cancel := context.WithCancel(context.Background())
rawSock := &SharedSocket{ rawSock := &SharedSocket{
ctx: ctx, ctx: ctx,
cancel: cancel, cancel: cancel,
mtu: mtu,
port: port, port: port,
packetDemux: make(chan rcvdPacket), packetDemux: make(chan rcvdPacket),
} }
@@ -222,8 +230,10 @@ func (s *SharedSocket) Close() error {
// read start a read loop for a specific receiver and sends the packet to the packetDemux channel // read start a read loop for a specific receiver and sends the packet to the packetDemux channel
func (s *SharedSocket) read(receiver receiver) { func (s *SharedSocket) read(receiver receiver) {
// Buffer reuse is safe: packetDemux is unbuffered, so read() blocks until
// ReadFrom() synchronously processes the packet before next iteration
buf := make([]byte, s.mtu+maxIPUDPOverhead)
for { for {
buf := make([]byte, 1500)
n, addr, err := receiver(s.ctx, buf, 0) n, addr, err := receiver(s.ctx, buf, 0)
select { select {
case <-s.ctx.Done(): case <-s.ctx.Done():