diff --git a/client/cmd/root.go b/client/cmd/root.go index fa4bd4d42..0bddecc47 100644 --- a/client/cmd/root.go +++ b/client/cmd/root.go @@ -38,6 +38,7 @@ const ( extraIFaceBlackListFlag = "extra-iface-blacklist" dnsRouteIntervalFlag = "dns-router-interval" enableLazyConnectionFlag = "enable-lazy-connection" + mtuFlag = "mtu" ) var ( @@ -73,6 +74,7 @@ var ( anonymizeFlag bool dnsRouteInterval time.Duration lazyConnEnabled bool + mtu int rootCmd = &cobra.Command{ Use: "netbird", diff --git a/client/cmd/root_test.go b/client/cmd/root_test.go index 4cbbe8783..20e68166a 100644 --- a/client/cmd/root_test.go +++ b/client/cmd/root_test.go @@ -54,6 +54,7 @@ func TestSetFlagsFromEnvVars(t *testing.T) { cmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name") cmd.PersistentFlags().BoolVar(&rosenpassEnabled, enableRosenpassFlag, false, "Enable Rosenpass feature Rosenpass.") 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_INTERFACE_NAME", "test-name") diff --git a/client/cmd/up.go b/client/cmd/up.go index b9781c0df..04bd95f01 100644 --- a/client/cmd/up.go +++ b/client/cmd/up.go @@ -54,6 +54,7 @@ func init() { upCmd.PersistentFlags().BoolVarP(&foregroundMode, "foreground-mode", "F", false, "start service in foreground") upCmd.PersistentFlags().StringVar(&interfaceName, interfaceNameFlag, iface.WgInterfaceDefault, "Wireguard interface name") 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, `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.`, @@ -270,6 +271,13 @@ func setupConfig(customDNSAddressConverted []byte, cmd *cobra.Command) (*interna 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 { ic.NetworkMonitor = &networkMonitor } @@ -368,6 +376,14 @@ func setupLoginRequest(providedSetupKey string, customDNSAddressConverted []byte 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 { loginRequest.NetworkMonitor = &networkMonitor } @@ -403,6 +419,16 @@ func setupLoginRequest(providedSetupKey string, customDNSAddressConverted []byte 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 { for _, element := range list { if element == "" { diff --git a/client/iface/bind/ice_bind.go b/client/iface/bind/ice_bind.go index c3d5ef377..d222d0be8 100644 --- a/client/iface/bind/ice_bind.go +++ b/client/iface/bind/ice_bind.go @@ -56,10 +56,11 @@ type ICEBind struct { muUDPMux sync.Mutex udpMux *UniversalUDPMuxDefault address wgaddr.Address + mtu int 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) ib := &ICEBind{ StdNetBind: b, @@ -69,6 +70,7 @@ func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Ad endpoints: make(map[netip.Addr]net.Conn), closedChan: make(chan struct{}), closed: true, + mtu: mtu, address: address, activityRecorder: NewActivityRecorder(), } @@ -80,6 +82,10 @@ func NewICEBind(transportNet transport.Net, filterFn FilterFn, address wgaddr.Ad return ib } +func (s *ICEBind) MTU() int { + return s.mtu +} + func (s *ICEBind) Open(uport uint16) ([]wgConn.ReceiveFunc, uint16, error) { s.closed = false s.closedChanMu.Lock() @@ -158,6 +164,7 @@ func (s *ICEBind) createIPv4ReceiverFn(pc *ipv4.PacketConn, conn *net.UDPConn, r Net: s.transportNet, FilterFn: s.filterFn, WGAddress: s.address, + MTU: s.mtu, }, ) return func(bufs [][]byte, sizes []int, eps []wgConn.Endpoint) (n int, err error) { diff --git a/client/iface/bind/udp_mux_universal.go b/client/iface/bind/udp_mux_universal.go index b755a7827..2bd7ca1d5 100644 --- a/client/iface/bind/udp_mux_universal.go +++ b/client/iface/bind/udp_mux_universal.go @@ -19,8 +19,10 @@ import ( "github.com/pion/transport/v3" "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. // 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) @@ -44,6 +46,7 @@ type UniversalUDPMuxParams struct { Net transport.Net FilterFn FilterFn WGAddress wgaddr.Address + MTU int } // 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. // It is a blocking method, consider running in a go routine. func (m *UniversalUDPMuxDefault) ReadFromConn(ctx context.Context) { - buf := make([]byte, 1500) + buf := make([]byte, m.params.MTU+bufsize.WGBufferOverhead) for { select { case <-ctx.Done(): diff --git a/client/iface/device.go b/client/iface/device.go index 81f2e0f47..f4ed6af9b 100644 --- a/client/iface/device.go +++ b/client/iface/device.go @@ -17,6 +17,7 @@ type WGTunDevice interface { Up() (*bind.UniversalUDPMuxDefault, error) UpdateAddr(address wgaddr.Address) error WgAddress() wgaddr.Address + MTU() int DeviceName() string Close() error FilteredDevice() *device.FilteredDevice diff --git a/client/iface/device/device_android.go b/client/iface/device/device_android.go index 4fe6e466b..9b538b302 100644 --- a/client/iface/device/device_android.go +++ b/client/iface/device/device_android.go @@ -137,6 +137,10 @@ func (t *WGTunDevice) WgAddress() wgaddr.Address { return t.address } +func (t *WGTunDevice) MTU() int { + return t.mtu +} + func (t *WGTunDevice) FilteredDevice() *FilteredDevice { return t.filteredDevice } diff --git a/client/iface/device/device_darwin.go b/client/iface/device/device_darwin.go index 81de0e360..344d143f9 100644 --- a/client/iface/device/device_darwin.go +++ b/client/iface/device/device_darwin.go @@ -111,6 +111,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address { return t.address } +func (t *TunDevice) MTU() int { + return t.mtu +} + func (t *TunDevice) DeviceName() string { return t.name } diff --git a/client/iface/device/device_ios.go b/client/iface/device/device_ios.go index 4613762c3..a8a13871b 100644 --- a/client/iface/device/device_ios.go +++ b/client/iface/device/device_ios.go @@ -125,6 +125,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address { return t.address } +func (t *TunDevice) MTU() int { + return t.mtu +} + func (t *TunDevice) UpdateAddr(_ wgaddr.Address) error { // todo implement return nil diff --git a/client/iface/device/device_kernel_unix.go b/client/iface/device/device_kernel_unix.go index 988ed1b39..58f47f73c 100644 --- a/client/iface/device/device_kernel_unix.go +++ b/client/iface/device/device_kernel_unix.go @@ -95,7 +95,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) { return nil, err } - rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter()) + rawSock, err := sharedsock.Listen(t.wgPort, sharedsock.NewIncomingSTUNFilter(), t.mtu) if err != nil { return nil, err } @@ -104,6 +104,7 @@ func (t *TunKernelDevice) Up() (*bind.UniversalUDPMuxDefault, error) { Net: t.transportNet, FilterFn: t.filterFn, WGAddress: t.address, + MTU: t.mtu, } mux := bind.NewUniversalUDPMuxDefault(bindParams) go mux.ReadFromConn(t.ctx) @@ -151,6 +152,10 @@ func (t *TunKernelDevice) WgAddress() wgaddr.Address { return t.address } +func (t *TunKernelDevice) MTU() int { + return t.mtu +} + func (t *TunKernelDevice) DeviceName() string { return t.name } diff --git a/client/iface/device/device_netstack.go b/client/iface/device/device_netstack.go index fc3cb0215..a82df17fd 100644 --- a/client/iface/device/device_netstack.go +++ b/client/iface/device/device_netstack.go @@ -125,6 +125,10 @@ func (t *TunNetstackDevice) WgAddress() wgaddr.Address { return t.address } +func (t *TunNetstackDevice) MTU() int { + return t.mtu +} + func (t *TunNetstackDevice) DeviceName() string { return t.name } diff --git a/client/iface/device/device_usp_unix.go b/client/iface/device/device_usp_unix.go index e781f6004..6aa4df2ef 100644 --- a/client/iface/device/device_usp_unix.go +++ b/client/iface/device/device_usp_unix.go @@ -118,6 +118,10 @@ func (t *USPDevice) WgAddress() wgaddr.Address { return t.address } +func (t *USPDevice) MTU() int { + return t.mtu +} + func (t *USPDevice) DeviceName() string { return t.name } diff --git a/client/iface/device/device_windows.go b/client/iface/device/device_windows.go index 0316c4b8d..54838a449 100644 --- a/client/iface/device/device_windows.go +++ b/client/iface/device/device_windows.go @@ -144,6 +144,10 @@ func (t *TunDevice) WgAddress() wgaddr.Address { return t.address } +func (t *TunDevice) MTU() int { + return t.mtu +} + func (t *TunDevice) DeviceName() string { return t.name } diff --git a/client/iface/device_android.go b/client/iface/device_android.go index a1e246fc5..5f188d2c9 100644 --- a/client/iface/device_android.go +++ b/client/iface/device_android.go @@ -15,6 +15,7 @@ type WGTunDevice interface { Up() (*bind.UniversalUDPMuxDefault, error) UpdateAddr(address wgaddr.Address) error WgAddress() wgaddr.Address + MTU() int DeviceName() string Close() error FilteredDevice() *device.FilteredDevice diff --git a/client/iface/iface.go b/client/iface/iface.go index 0e41f8e64..d45616a0d 100644 --- a/client/iface/iface.go +++ b/client/iface/iface.go @@ -26,6 +26,8 @@ import ( const ( DefaultMTU = 1280 + MinMTU = 576 + MaxMTU = 8192 DefaultWgPort = 51820 WgInterfaceDefault = configurer.WgInterfaceDefault ) @@ -82,6 +84,10 @@ func (w *WGIface) Address() wgaddr.Address { return w.tun.WgAddress() } +func (w *WGIface) MTU() int { + return w.tun.MTU() +} + // ToInterface returns the net.Interface for the Wireguard interface func (r *WGIface) ToInterface() *net.Interface { name := r.tun.DeviceName() diff --git a/client/iface/iface_new_android.go b/client/iface/iface_new_android.go index c8babea32..ad0ffe91a 100644 --- a/client/iface/iface_new_android.go +++ b/client/iface/iface_new_android.go @@ -14,7 +14,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) { return nil, err } - iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) + iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU) wgIFace := &WGIface{ userspaceBind: true, diff --git a/client/iface/iface_new_darwin.go b/client/iface/iface_new_darwin.go index 93fd7fd5c..7dd74d571 100644 --- a/client/iface/iface_new_darwin.go +++ b/client/iface/iface_new_darwin.go @@ -17,7 +17,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) { return nil, err } - iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) + iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU) var tun WGTunDevice if netstack.IsEnabled() { diff --git a/client/iface/iface_new_ios.go b/client/iface/iface_new_ios.go index 317ee0f46..ce4f7b677 100644 --- a/client/iface/iface_new_ios.go +++ b/client/iface/iface_new_ios.go @@ -16,7 +16,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) { return nil, err } - iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) + iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU) wgIFace := &WGIface{ tun: device.NewTunDevice(opts.IFaceName, wgAddress, opts.WGPort, opts.WGPrivKey, iceBind, opts.MobileArgs.TunFd), diff --git a/client/iface/iface_new_unix.go b/client/iface/iface_new_unix.go index 23ee7236f..493144f13 100644 --- a/client/iface/iface_new_unix.go +++ b/client/iface/iface_new_unix.go @@ -22,7 +22,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) { wgIFace := &WGIface{} 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.userspaceBind = true wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind) @@ -31,11 +31,11 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) { if device.WireGuardModuleIsLoaded() { 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 } 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.userspaceBind = true wgIFace.wgProxyFactory = wgproxy.NewUSPFactory(iceBind) diff --git a/client/iface/iface_new_windows.go b/client/iface/iface_new_windows.go index 413062940..349c5b33b 100644 --- a/client/iface/iface_new_windows.go +++ b/client/iface/iface_new_windows.go @@ -14,7 +14,7 @@ func NewWGIFace(opts WGIFaceOpts) (*WGIface, error) { if err != nil { return nil, err } - iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress) + iceBind := bind.NewICEBind(opts.TransportNet, opts.FilterFn, wgAddress, opts.MTU) var tun WGTunDevice if netstack.IsEnabled() { diff --git a/client/iface/wgproxy/bind/proxy.go b/client/iface/wgproxy/bind/proxy.go index 179ac0b75..5d73a4e2a 100644 --- a/client/iface/wgproxy/bind/proxy.go +++ b/client/iface/wgproxy/bind/proxy.go @@ -13,6 +13,7 @@ import ( "github.com/netbirdio/netbird/client/iface/bind" "github.com/netbirdio/netbird/client/iface/wgproxy/listener" + "github.com/netbirdio/netbird/client/iface/bufsize" ) type ProxyBind struct { @@ -135,7 +136,7 @@ func (p *ProxyBind) proxyToLocal(ctx context.Context) { }() for { - buf := make([]byte, 1500) + buf := make([]byte, p.Bind.MTU()+bufsize.WGBufferOverhead) n, err := p.remoteConn.Read(buf) if err != nil { if ctx.Err() != nil { diff --git a/client/iface/wgproxy/ebpf/proxy.go b/client/iface/wgproxy/ebpf/proxy.go index e21fc35d4..911f451bd 100644 --- a/client/iface/wgproxy/ebpf/proxy.go +++ b/client/iface/wgproxy/ebpf/proxy.go @@ -20,6 +20,7 @@ import ( "github.com/netbirdio/netbird/client/internal/ebpf" ebpfMgr "github.com/netbirdio/netbird/client/internal/ebpf/manager" nbnet "github.com/netbirdio/netbird/util/net" + "github.com/netbirdio/netbird/client/iface/bufsize" ) const ( @@ -29,6 +30,7 @@ const ( // WGEBPFProxy definition for proxy with EBPF support type WGEBPFProxy struct { localWGListenPort int + mtu int ebpfManager ebpfMgr.Manager turnConnStore map[uint16]net.Conn @@ -43,10 +45,11 @@ type WGEBPFProxy struct { } // NewWGEBPFProxy create new WGEBPFProxy instance -func NewWGEBPFProxy(wgPort int) *WGEBPFProxy { +func NewWGEBPFProxy(wgPort int, mtu int) *WGEBPFProxy { log.Debugf("instantiate ebpf proxy") wgProxy := &WGEBPFProxy{ localWGListenPort: wgPort, + mtu: mtu, ebpfManager: ebpf.GetEbpfManagerInstance(), 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 // From this go routine has only one instance. func (p *WGEBPFProxy) proxyToRemote() { - buf := make([]byte, 1500) + buf := make([]byte, p.mtu+bufsize.WGBufferOverhead) for p.ctx.Err() == nil { if err := p.readAndForwardPacket(buf); err != nil { if p.ctx.Err() != nil { diff --git a/client/iface/wgproxy/ebpf/wrapper.go b/client/iface/wgproxy/ebpf/wrapper.go index dbf9128a8..132404843 100644 --- a/client/iface/wgproxy/ebpf/wrapper.go +++ b/client/iface/wgproxy/ebpf/wrapper.go @@ -13,6 +13,7 @@ import ( log "github.com/sirupsen/logrus" "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 @@ -103,7 +104,7 @@ func (e *ProxyWrapper) CloseConn() error { func (p *ProxyWrapper) proxyToLocal(ctx context.Context) { defer p.WgeBPFProxy.removeTurnConn(uint16(p.wgEndpointAddr.Port)) - buf := make([]byte, 1500) + buf := make([]byte, p.WgeBPFProxy.mtu+bufsize.WGBufferOverhead) for { n, err := p.readFromRemote(ctx, buf) if err != nil { diff --git a/client/iface/wgproxy/factory_kernel.go b/client/iface/wgproxy/factory_kernel.go index e62cd97be..3ade5c8c8 100644 --- a/client/iface/wgproxy/factory_kernel.go +++ b/client/iface/wgproxy/factory_kernel.go @@ -11,16 +11,18 @@ import ( type KernelFactory struct { wgPort int + mtu int ebpfProxy *ebpf.WGEBPFProxy } -func NewKernelFactory(wgPort int) *KernelFactory { +func NewKernelFactory(wgPort int, mtu int) *KernelFactory { f := &KernelFactory{ wgPort: wgPort, + mtu: mtu, } - ebpfProxy := ebpf.NewWGEBPFProxy(wgPort) + ebpfProxy := ebpf.NewWGEBPFProxy(wgPort, mtu) if err := ebpfProxy.Listen(); err != nil { log.Infof("WireGuard Proxy Factory will produce UDP proxy") 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 { if w.ebpfProxy == nil { - return udpProxy.NewWGUDPProxy(w.wgPort) + return udpProxy.NewWGUDPProxy(w.wgPort, w.mtu) } return ebpf.NewProxyWrapper(w.ebpfProxy) diff --git a/client/iface/wgproxy/factory_kernel_freebsd.go b/client/iface/wgproxy/factory_kernel_freebsd.go index 736944229..1b9fa344f 100644 --- a/client/iface/wgproxy/factory_kernel_freebsd.go +++ b/client/iface/wgproxy/factory_kernel_freebsd.go @@ -9,19 +9,21 @@ import ( // KernelFactory todo: check eBPF support on FreeBSD type KernelFactory struct { 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") f := &KernelFactory{ wgPort: wgPort, + mtu: mtu, } return f } func (w *KernelFactory) GetProxy() Proxy { - return udpProxy.NewWGUDPProxy(w.wgPort) + return udpProxy.NewWGUDPProxy(w.wgPort, w.mtu) } func (w *KernelFactory) Free() error { diff --git a/client/iface/wgproxy/proxy_test.go b/client/iface/wgproxy/proxy_test.go index 2165b8aba..1bf858643 100644 --- a/client/iface/wgproxy/proxy_test.go +++ b/client/iface/wgproxy/proxy_test.go @@ -84,7 +84,7 @@ func TestProxyCloseByRemoteConn(t *testing.T) { }{ { name: "userspace proxy", - proxy: udpProxy.NewWGUDPProxy(51830), + proxy: udpProxy.NewWGUDPProxy(51830, 1280), }, } diff --git a/client/iface/wgproxy/udp/proxy.go b/client/iface/wgproxy/udp/proxy.go index df45d8ca5..0872f1f34 100644 --- a/client/iface/wgproxy/udp/proxy.go +++ b/client/iface/wgproxy/udp/proxy.go @@ -13,11 +13,14 @@ import ( cerrors "github.com/netbirdio/netbird/client/errors" "github.com/netbirdio/netbird/client/iface/wgproxy/listener" + "github.com/netbirdio/netbird/client/iface/bufsize" ) + // WGUDPProxy proxies type WGUDPProxy struct { localWGListenPort int + mtu int remoteConn 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 -func NewWGUDPProxy(wgPort int) *WGUDPProxy { +func NewWGUDPProxy(wgPort int, mtu int) *WGUDPProxy { log.Debugf("Initializing new user space proxy with port %d", wgPort) p := &WGUDPProxy{ localWGListenPort: wgPort, + mtu: mtu, closeListener: listener.NewCloseListener(), } 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 { n, err := p.localConn.Read(buf) 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 { n, err := p.remoteConnRead(ctx, buf) if err != nil { diff --git a/client/internal/config.go b/client/internal/config.go index add702cdb..ca4f2954f 100644 --- a/client/internal/config.go +++ b/client/internal/config.go @@ -76,6 +76,8 @@ type ConfigInput struct { DNSLabels domain.List LazyConnectionEnabled *bool + + MTU *int } // Config Configuration type @@ -142,6 +144,8 @@ type Config struct { ClientCertKeyPair *tls.Certificate `json:"-"` LazyConnectionEnabled bool + + MTU int } // 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 } + 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 } diff --git a/client/internal/connect.go b/client/internal/connect.go index 7b49fa3ad..0736e2963 100644 --- a/client/internal/connect.go +++ b/client/internal/connect.go @@ -17,6 +17,7 @@ import ( "google.golang.org/grpc/codes" gstatus "google.golang.org/grpc/status" + "github.com/netbirdio/netbird/client/iface" "github.com/netbirdio/netbird/client/iface/device" "github.com/netbirdio/netbird/client/internal/dns" "github.com/netbirdio/netbird/client/internal/listener" @@ -442,6 +443,8 @@ func createEngineConfig(key wgtypes.Key, config *Config, peerConfig *mgmProto.Pe BlockInbound: config.BlockInbound, LazyConnectionEnabled: config.LazyConnectionEnabled, + + MTU: selectMTU(config.MTU, peerConfig.Mtu), } if config.PreSharedKey != "" { @@ -464,6 +467,20 @@ func createEngineConfig(key wgtypes.Key, config *Config, peerConfig *mgmProto.Pe 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 func connectToSignal(ctx context.Context, wtConfig *mgmProto.NetbirdConfig, ourPrivateKey wgtypes.Key) (*signal.GrpcClient, error) { var sigTLSEnabled bool diff --git a/client/internal/dns/upstream.go b/client/internal/dns/upstream.go index c44d36599..e4d6b6f94 100644 --- a/client/internal/dns/upstream.go +++ b/client/internal/dns/upstream.go @@ -25,6 +25,12 @@ import ( "github.com/netbirdio/netbird/client/proto" ) +var currentMTU = iface.DefaultMTU + +func SetCurrentMTU(mtu int) { + currentMTU = mtu +} + const ( 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. func ExchangeWithFallback(ctx context.Context, client *dns.Client, r *dns.Msg, upstream string) (*dns.Msg, time.Duration, error) { // MTU - ip + udp headers - // Note: this could be sent out on an interface that is not ours, but our MTU should always be lower. - client.UDPSize = iface.DefaultMTU - (60 + 8) + // Note: this could be sent out on an interface that is not ours, but higher MTU settings could break truncation handling. + client.UDPSize = uint16(currentMTU - (60 + 8)) var ( rm *dns.Msg diff --git a/client/internal/engine.go b/client/internal/engine.go index 1abb8163d..3881be246 100644 --- a/client/internal/engine.go +++ b/client/internal/engine.go @@ -123,6 +123,8 @@ type EngineConfig struct { BlockInbound 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. @@ -1526,7 +1528,7 @@ func (e *Engine) newWgIface() (*iface.WGIface, error) { Address: e.config.WgAddr, WGPort: e.config.WgPort, WGPrivKey: e.config.WgPrivateKey.String(), - MTU: iface.DefaultMTU, + MTU: e.config.MTU, TransportNet: transportNet, FilterFn: e.addrViaRoutes, DisableDNS: e.config.DisableDNS, diff --git a/client/internal/engine_test.go b/client/internal/engine_test.go index f02138686..926907d6a 100644 --- a/client/internal/engine_test.go +++ b/client/internal/engine_test.go @@ -409,7 +409,7 @@ func TestEngine_UpdateNetworkMap(t *testing.T) { if err != nil { 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.srWatcher = guard.NewSRWatcher(nil, nil, nil, icemaker.Config{}) engine.connMgr = NewConnMgr(engine.config, engine.statusRecorder, engine.peerStore, wgIface) diff --git a/client/internal/routemanager/systemops/systemops_windows.go b/client/internal/routemanager/systemops/systemops_windows.go index 7afac9ae5..d6b38347e 100644 --- a/client/internal/routemanager/systemops/systemops_windows.go +++ b/client/internal/routemanager/systemops/systemops_windows.go @@ -295,7 +295,7 @@ func createIPForwardEntry2(route *MIB_IPFORWARD_ROW2) error { if e1 != 0 { return fmt.Errorf("CreateIpForwardEntry2: %w", e1) } - return fmt.Errorf("CreateIpForwardEntry2: code %d", r1) + return fmt.Errorf("CreateIpForwardEntry2: code %d", windows.NTStatus(r1)) } return nil } diff --git a/client/proto/daemon.pb.go b/client/proto/daemon.pb.go index 753aa62d1..7283c37c0 100644 --- a/client/proto/daemon.pb.go +++ b/client/proto/daemon.pb.go @@ -273,9 +273,10 @@ type LoginRequest struct { // cleanDNSLabels clean map list of DNS labels. // This is needed because the generated code // omits initialized empty slices due to omitempty tags - 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"` - BlockInbound *bool `protobuf:"varint,29,opt,name=block_inbound,json=blockInbound,proto3,oneof" json:"block_inbound,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"` + 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 sizeCache protoimpl.SizeCache } @@ -514,6 +515,13 @@ func (x *LoginRequest) GetBlockInbound() bool { return false } +func (x *LoginRequest) GetMtu() int64 { + if x != nil && x.Mtu != nil { + return *x.Mtu + } + return 0 +} + type LoginResponse struct { state protoimpl.MessageState `protogen:"open.v1"` 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"` InterfaceName string `protobuf:"bytes,6,opt,name=interfaceName,proto3" json:"interfaceName,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"` ServerSSHAllowed bool `protobuf:"varint,10,opt,name=serverSSHAllowed,proto3" json:"serverSSHAllowed,omitempty"` RosenpassEnabled bool `protobuf:"varint,11,opt,name=rosenpassEnabled,proto3" json:"rosenpassEnabled,omitempty"` @@ -1073,6 +1082,13 @@ func (x *GetConfigResponse) GetWireguardPort() int64 { return 0 } +func (x *GetConfigResponse) GetMtu() int64 { + if x != nil { + return x.Mtu + } + return 0 +} + func (x *GetConfigResponse) GetDisableAutoConnect() bool { if x != nil { return x.DisableAutoConnect @@ -1177,6 +1193,7 @@ type PeerState struct { 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"` 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 sizeCache protoimpl.SizeCache } @@ -1331,10 +1348,10 @@ func (x *PeerState) GetRelayAddress() string { } func (x *PeerState) GetConnectionType() string { - if x.Relayed { - return "Relayed" + if x != nil { + return x.ConnectionType } - return "P2P" + return "" } // LocalPeerState contains the latest state of the local peer @@ -3567,7 +3584,7 @@ var File_daemon_proto protoreflect.FileDescriptor const file_daemon_proto_rawDesc = "" + "\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" + "\bsetupKey\x18\x01 \x01(\tR\bsetupKey\x12&\n" + "\fpreSharedKey\x18\x02 \x01(\tB\x02\x18\x01R\fpreSharedKey\x12$\n" + @@ -3601,7 +3618,8 @@ const file_daemon_proto_rawDesc = "" + "dns_labels\x18\x1a \x03(\tR\tdnsLabels\x12&\n" + "\x0ecleanDNSLabels\x18\x1b \x01(\bR\x0ecleanDNSLabels\x129\n" + "\x15lazyConnectionEnabled\x18\x1c \x01(\bH\x0fR\x15lazyConnectionEnabled\x88\x01\x01\x12(\n" + - "\rblock_inbound\x18\x1d \x01(\bH\x10R\fblockInbound\x88\x01\x01B\x13\n" + + "\rblock_inbound\x18\x1d \x01(\bH\x10R\fblockInbound\x88\x01\x01\x12\x15\n" + + "\x03mtu\x18\x1e \x01(\x03H\x11R\x03mtu\x88\x01\x01B\x13\n" + "\x11_rosenpassEnabledB\x10\n" + "\x0e_interfaceNameB\x10\n" + "\x0e_wireguardPortB\x17\n" + @@ -3618,7 +3636,8 @@ const file_daemon_proto_rawDesc = "" + "\x11_block_lan_accessB\x18\n" + "\x16_disable_notificationsB\x18\n" + "\x16_lazyConnectionEnabledB\x10\n" + - "\x0e_block_inbound\"\xb5\x01\n" + + "\x0e_block_inboundB\x06\n" + + "\x04_mtu\"\xb5\x01\n" + "\rLoginResponse\x12$\n" + "\rneedsSSOLogin\x18\x01 \x01(\bR\rneedsSSOLogin\x12\x1a\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" + "\vDownRequest\"\x0e\n" + "\fDownResponse\"\x12\n" + - "\x10GetConfigRequest\"\xa3\x06\n" + + "\x10GetConfigRequest\"\xb5\x06\n" + "\x11GetConfigResponse\x12$\n" + "\rmanagementUrl\x18\x01 \x01(\tR\rmanagementUrl\x12\x1e\n" + "\n" + @@ -3652,7 +3671,8 @@ const file_daemon_proto_rawDesc = "" + "\fpreSharedKey\x18\x04 \x01(\tR\fpreSharedKey\x12\x1a\n" + "\badminURL\x18\x05 \x01(\tR\badminURL\x12$\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" + "\x10serverSSHAllowed\x18\n" + " \x01(\bR\x10serverSSHAllowed\x12*\n" + @@ -3666,7 +3686,7 @@ const file_daemon_proto_rawDesc = "" + "disableDns\x122\n" + "\x15disable_client_routes\x18\x12 \x01(\bR\x13disableClientRoutes\x122\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" + "\x02IP\x18\x01 \x01(\tR\x02IP\x12\x16\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" + "\bnetworks\x18\x10 \x03(\tR\bnetworks\x123\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" + "\x02IP\x18\x01 \x01(\tR\x02IP\x12\x16\n" + "\x06pubKey\x18\x02 \x01(\tR\x06pubKey\x12(\n" + diff --git a/client/proto/daemon.proto b/client/proto/daemon.proto index 462555c82..32fe97ab6 100644 --- a/client/proto/daemon.proto +++ b/client/proto/daemon.proto @@ -136,6 +136,8 @@ message LoginRequest { optional bool lazyConnectionEnabled = 28; optional bool block_inbound = 29; + + optional int64 mtu = 30; } message LoginResponse { @@ -195,6 +197,8 @@ message GetConfigResponse { int64 wireguardPort = 7; + int64 mtu = 8; + bool disableAutoConnect = 9; bool serverSSHAllowed = 10; @@ -239,6 +243,7 @@ message PeerState { repeated string networks = 16; google.protobuf.Duration latency = 17; string relayAddress = 18; + string connectionType = 19; } // LocalPeerState contains the latest state of the local peer diff --git a/client/server/server.go b/client/server/server.go index e3ce1a2b4..22486aa24 100644 --- a/client/server/server.go +++ b/client/server/server.go @@ -428,6 +428,12 @@ func (s *Server) Login(callerCtx context.Context, msg *proto.LoginRequest) (*pro s.latestConfigInput.LazyConnectionEnabled = msg.LazyConnectionEnabled } + if msg.Mtu != nil { + mtu := int(*msg.Mtu) + inputConfig.MTU = &mtu + s.latestConfigInput.MTU = &mtu + } + s.mutex.Unlock() if msg.OptionalPreSharedKey != nil { @@ -784,6 +790,7 @@ func (s *Server) GetConfig(_ context.Context, _ *proto.GetConfigRequest) (*proto AdminURL: adminURL, InterfaceName: s.config.WgIface, WireguardPort: int64(s.config.WgPort), + Mtu: int64(s.config.MTU), DisableAutoConnect: s.config.DisableAutoConnect, ServerSSHAllowed: *s.config.ServerSSHAllowed, RosenpassEnabled: s.config.RosenpassEnabled, @@ -841,6 +848,11 @@ func toProtoFullStatus(fullStatus peer.FullStatus) *proto.FullStatus { pbFullStatus.LazyConnectionEnabled = fullStatus.LazyConnectionEnabled for _, peerState := range fullStatus.Peers { + connectionType := "P2P" + if peerState.Relayed { + connectionType = "Relayed" + } + pbPeerState := &proto.PeerState{ IP: peerState.IP, PubKey: peerState.PubKey, @@ -859,6 +871,7 @@ func toProtoFullStatus(fullStatus peer.FullStatus) *proto.FullStatus { RosenpassEnabled: peerState.RosenpassEnabled, Networks: maps.Keys(peerState.GetRoutes()), Latency: durationpb.New(peerState.Latency), + ConnectionType: connectionType, } pbFullStatus.Peers = append(pbFullStatus.Peers, pbPeerState) } diff --git a/client/ui/client_ui.go b/client/ui/client_ui.go index ace5b71e4..42a591991 100644 --- a/client/ui/client_ui.go +++ b/client/ui/client_ui.go @@ -34,6 +34,7 @@ import ( "google.golang.org/grpc" "google.golang.org/grpc/credentials/insecure" + "github.com/netbirdio/netbird/client/iface" "github.com/netbirdio/netbird/client/internal" "github.com/netbirdio/netbird/client/proto" "github.com/netbirdio/netbird/client/ui/desktop" @@ -220,6 +221,7 @@ type serviceClient struct { iPreSharedKey *widget.Entry iInterfaceName *widget.Entry iInterfacePort *widget.Entry + iMTU *widget.Entry // switch elements for settings form sRosenpassPermissive *widget.Check @@ -236,6 +238,7 @@ type serviceClient struct { RosenpassPermissive bool interfaceName string interfacePort int + mtu int networkMonitor bool disableDNS bool disableClientRoutes bool @@ -352,6 +355,7 @@ func (s *serviceClient) showSettingsUI() { s.iPreSharedKey = widget.NewPasswordEntry() s.iInterfaceName = widget.NewEntry() s.iInterfacePort = widget.NewEntry() + s.iMTU = widget.NewEntry() 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: "Interface Name", Widget: s.iInterfaceName}, {Text: "Interface Port", Widget: s.iInterfacePort}, + {Text: "MTU", Widget: s.iMTU}, {Text: "Management URL", Widget: s.iMngURL}, {Text: "Admin URL", Widget: s.iAdminURL}, {Text: "Pre-shared Key", Widget: s.iPreSharedKey}, @@ -403,6 +408,16 @@ func (s *serviceClient) getSettingsForm() *widget.Form { 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) 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 || s.adminURL != iAdminURL || s.RosenpassPermissive != s.sRosenpassPermissive.Checked || 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.disableClientRoutes != s.sDisableClientRoutes.Checked || s.disableServerRoutes != s.sDisableServerRoutes.Checked || @@ -429,6 +444,7 @@ func (s *serviceClient) getSettingsForm() *widget.Form { RosenpassPermissive: &s.sRosenpassPermissive.Checked, InterfaceName: &s.iInterfaceName.Text, WireguardPort: &port, + Mtu: &mtu, NetworkMonitor: &s.sNetworkMonitor.Checked, DisableDns: &s.sDisableDNS.Checked, DisableClientRoutes: &s.sDisableClientRoutes.Checked, @@ -822,6 +838,7 @@ func (s *serviceClient) getSrvConfig() { s.RosenpassPermissive = cfg.RosenpassPermissive s.interfaceName = cfg.InterfaceName s.interfacePort = int(cfg.WireguardPort) + s.mtu = int(cfg.Mtu) s.networkMonitor = cfg.NetworkMonitor s.disableDNS = cfg.DisableDns @@ -837,6 +854,7 @@ func (s *serviceClient) getSrvConfig() { s.iPreSharedKey.SetText(cfg.PreSharedKey) s.iInterfaceName.SetText(cfg.InterfaceName) s.iInterfacePort.SetText(strconv.Itoa(int(cfg.WireguardPort))) + s.iMTU.SetText(strconv.Itoa(int(cfg.Mtu))) s.sRosenpassPermissive.SetChecked(cfg.RosenpassPermissive) if !cfg.RosenpassEnabled { s.sRosenpassPermissive.Disable() diff --git a/management/proto/management.pb.go b/management/proto/management.pb.go index 8503f2e94..a3d8d947a 100644 --- a/management/proto/management.pb.go +++ b/management/proto/management.pb.go @@ -1,7 +1,7 @@ // Code generated by protoc-gen-go. DO NOT EDIT. // versions: // protoc-gen-go v1.26.0 -// protoc v3.21.12 +// protoc v4.24.3 // source: management.proto package proto @@ -1649,6 +1649,7 @@ type PeerConfig struct { Fqdn string `protobuf:"bytes,4,opt,name=fqdn,proto3" json:"fqdn,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"` + Mtu int32 `protobuf:"varint,7,opt,name=mtu,proto3" json:"mtu,omitempty"` } func (x *PeerConfig) Reset() { @@ -1725,6 +1726,13 @@ func (x *PeerConfig) GetLazyConnectionEnabled() bool { 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 type NetworkMap struct { state protoimpl.MessageState @@ -3560,7 +3568,7 @@ var file_management_proto_rawDesc = []byte{ 0x68, 0x6f, 0x73, 0x74, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x12, 0x0a, 0x04, 0x75, 0x73, 0x65, 0x72, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x75, 0x73, 0x65, 0x72, 0x12, 0x1a, 0x0a, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, - 0x52, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x22, 0x81, 0x02, 0x0a, 0x0a, 0x50, + 0x52, 0x08, 0x70, 0x61, 0x73, 0x73, 0x77, 0x6f, 0x72, 0x64, 0x22, 0x93, 0x02, 0x0a, 0x0a, 0x50, 0x65, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x18, 0x0a, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x07, 0x61, 0x64, 0x64, 0x72, 0x65, 0x73, 0x73, 0x12, 0x10, 0x0a, 0x03, 0x64, 0x6e, 0x73, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, @@ -3576,290 +3584,291 @@ var file_management_proto_rawDesc = []byte{ 0x6e, 0x45, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x12, 0x34, 0x0a, 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7d84bece7..094b89958 100644 --- a/relay/testec2/tun/proxy.go +++ b/relay/testec2/tun/proxy.go @@ -7,6 +7,8 @@ import ( "sync/atomic" log "github.com/sirupsen/logrus" + + "github.com/netbirdio/netbird/client/iface" ) type Proxy struct { @@ -26,7 +28,7 @@ func (p *Proxy) Close() { } func (p *Proxy) readFromDevice() { - buf := make([]byte, 1500) + buf := make([]byte, iface.MaxMTU) for { n, err := p.Device.Read(buf) if err != nil { @@ -49,7 +51,7 @@ func (p *Proxy) readFromDevice() { } func (p *Proxy) readFromConn() { - buf := make([]byte, 1500) + buf := make([]byte, iface.MaxMTU) for { n, _, err := p.PConn.ReadFrom(buf) if err != nil { diff --git a/sharedsock/example/main.go b/sharedsock/example/main.go index 9384d2b1c..0a55d293c 100644 --- a/sharedsock/example/main.go +++ b/sharedsock/example/main.go @@ -6,13 +6,14 @@ import ( "os/signal" "github.com/netbirdio/netbird/sharedsock" + "github.com/netbirdio/netbird/client/iface" log "github.com/sirupsen/logrus" ) func main() { port := 51820 - rawSock, err := sharedsock.Listen(port, sharedsock.NewIncomingSTUNFilter()) + rawSock, err := sharedsock.Listen(port, sharedsock.NewIncomingSTUNFilter(), iface.DefaultMTU) if err != nil { panic(err) } diff --git a/sharedsock/sock_linux.go b/sharedsock/sock_linux.go index 1c22e7869..5321afaeb 100644 --- a/sharedsock/sock_linux.go +++ b/sharedsock/sock_linux.go @@ -36,6 +36,7 @@ type SharedSocket struct { conn4 *socket.Conn conn6 *socket.Conn port int + mtu int routerMux sync.RWMutex router routing.Router packetDemux chan rcvdPacket @@ -56,12 +57,19 @@ var writeSerializerOptions = gopacket.SerializeOptions{ 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 -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()) rawSock := &SharedSocket{ ctx: ctx, cancel: cancel, + mtu: mtu, port: port, 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 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 { - buf := make([]byte, 1500) n, addr, err := receiver(s.ctx, buf, 0) select { case <-s.ctx.Done():