Make GSO adaptive

experimental/deprecated/constants.go

@@ -33,17 +33,31 @@ func (n Note) Impending() bool {
 }
 
 func (n Note) Message() string {
+	if n.MigrationLink != "" {
 		return F.ToString(
 			n.Description, " is deprecated in sing-box ", n.DeprecatedVersion,
 			" and will be removed in sing-box ", n.ScheduledVersion, ", please checkout documentation for migration.",
 		)
+	} else {
+		return F.ToString(
+			n.Description, " is deprecated in sing-box ", n.DeprecatedVersion,
+			" and will be removed in sing-box ", n.ScheduledVersion, ".",
+		)
+	}
 }
 
 func (n Note) MessageWithLink() string {
+	if n.MigrationLink != "" {
 		return F.ToString(
 			n.Description, " is deprecated in sing-box ", n.DeprecatedVersion,
 			" and will be removed in sing-box ", n.ScheduledVersion, ", checkout documentation for migration: ", n.MigrationLink,
 		)
+	} else {
+		return F.ToString(
+			n.Description, " is deprecated in sing-box ", n.DeprecatedVersion,
+			" and will be removed in sing-box ", n.ScheduledVersion, ".",
+		)
+	}
 }
 
 var OptionBadMatchSource = Note{
@@ -118,6 +132,23 @@ var OptionWireGuardOutbound = Note{
 	MigrationLink:     "https://sing-box.sagernet.org/migration/#migrate-wireguard-outbound-to-endpoint",
 }
 
+var OptionWireGuardGSO = Note{
+	Name:              "wireguard-gso",
+	Description:       "GSO option in wireguard outbound",
+	DeprecatedVersion: "1.11.0",
+	ScheduledVersion:  "1.13.0",
+	EnvName:           "WIREGUARD_GSO",
+	MigrationLink:     "https://sing-box.sagernet.org/migration/#migrate-wireguard-outbound-to-endpoint",
+}
+
+var OptionTUNGSO = Note{
+	Name:              "tun-gso",
+	Description:       "GSO option in tun",
+	DeprecatedVersion: "1.11.0",
+	ScheduledVersion:  "1.12.0",
+	EnvName:           "TUN_GSO",
+}
+
 var Options = []Note{
 	OptionBadMatchSource,
 	OptionGEOIP,
@@ -127,4 +158,6 @@ var Options = []Note{
 	OptionInboundOptions,
 	OptionDestinationOverrideFields,
 	OptionWireGuardOutbound,
+	OptionWireGuardGSO,
+	OptionTUNGSO,
 }

experimental/deprecated/stderr.go

@@ -34,5 +34,5 @@ func (f *stderrManager) ReportDeprecated(feature Note) {
 		return
 	}
 	f.logger.Error(feature.MessageWithLink())
-	f.logger.Fatal("to continuing using this feature, set ENABLE_DEPRECATED_" + feature.EnvName + "=true")
+	f.logger.Fatal("to continuing using this feature, set environment variable ENABLE_DEPRECATED_" + feature.EnvName + "=true")
 }

option/tun.go

@@ -13,7 +13,6 @@ import (
 type TunInboundOptions struct {
 	InterfaceName          string                           `json:"interface_name,omitempty"`
 	MTU                    uint32                           `json:"mtu,omitempty"`
-	GSO                    bool                             `json:"gso,omitempty"`
 	Address                badoption.Listable[netip.Prefix] `json:"address,omitempty"`
 	AutoRoute              bool                             `json:"auto_route,omitempty"`
 	IPRoute2TableIndex     int                              `json:"iproute2_table_index,omitempty"`
@@ -41,6 +40,8 @@ type TunInboundOptions struct {
 	Platform               *TunPlatformOptions              `json:"platform,omitempty"`
 	InboundOptions
 
+	// Deprecated: removed
+	GSO bool `json:"gso,omitempty"`
 	// Deprecated: merged to Address
 	Inet4Address badoption.Listable[netip.Prefix] `json:"inet4_address,omitempty"`
 	// Deprecated: merged to Address

option/wireguard.go

@@ -10,7 +10,6 @@ type WireGuardEndpointOptions struct {
 	System     bool                             `json:"system,omitempty"`
 	Name       string                           `json:"name,omitempty"`
 	MTU        uint32                           `json:"mtu,omitempty"`
-	GSO        bool                             `json:"gso,omitempty"`
 	Address    badoption.Listable[netip.Prefix] `json:"address"`
 	PrivateKey string                           `json:"private_key"`
 	ListenPort uint16                           `json:"listen_port,omitempty"`

protocol/tun/inbound.go

@@ -64,14 +64,14 @@ type Inbound struct {
 func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.TunInboundOptions) (adapter.Inbound, error) {
 	address := options.Address
 	var deprecatedAddressUsed bool
+
 	//nolint:staticcheck
-	//goland:noinspection GoDeprecation
 	if len(options.Inet4Address) > 0 {
 		address = append(address, options.Inet4Address...)
 		deprecatedAddressUsed = true
 	}
+
 	//nolint:staticcheck
-	//goland:noinspection GoDeprecation
 	if len(options.Inet6Address) > 0 {
 		address = append(address, options.Inet6Address...)
 		deprecatedAddressUsed = true
@@ -84,14 +84,14 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	})
 
 	routeAddress := options.RouteAddress
+
 	//nolint:staticcheck
-	//goland:noinspection GoDeprecation
 	if len(options.Inet4RouteAddress) > 0 {
 		routeAddress = append(routeAddress, options.Inet4RouteAddress...)
 		deprecatedAddressUsed = true
 	}
+
 	//nolint:staticcheck
-	//goland:noinspection GoDeprecation
 	if len(options.Inet6RouteAddress) > 0 {
 		routeAddress = append(routeAddress, options.Inet6RouteAddress...)
 		deprecatedAddressUsed = true
@@ -104,14 +104,14 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 	})
 
 	routeExcludeAddress := options.RouteExcludeAddress
+
 	//nolint:staticcheck
-	//goland:noinspection GoDeprecation
 	if len(options.Inet4RouteExcludeAddress) > 0 {
 		routeExcludeAddress = append(routeExcludeAddress, options.Inet4RouteExcludeAddress...)
 		deprecatedAddressUsed = true
 	}
+
 	//nolint:staticcheck
-	//goland:noinspection GoDeprecation
 	if len(options.Inet6RouteExcludeAddress) > 0 {
 		routeExcludeAddress = append(routeExcludeAddress, options.Inet6RouteExcludeAddress...)
 		deprecatedAddressUsed = true
@@ -127,6 +127,11 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 		deprecated.Report(ctx, deprecated.OptionTUNAddressX)
 	}
 
+	//nolint:staticcheck
+	if options.GSO {
+		deprecated.Report(ctx, deprecated.OptionTUNGSO)
+	}
+
 	tunMTU := options.MTU
 	if tunMTU == 0 {
 		tunMTU = 9000
@@ -180,7 +185,6 @@ func NewInbound(ctx context.Context, router adapter.Router, logger log.ContextLo
 		tunOptions: tun.Options{
 			Name:                     options.InterfaceName,
 			MTU:                      tunMTU,
-			GSO:                      options.GSO,
 			Inet4Address:             inet4Address,
 			Inet6Address:             inet6Address,
 			AutoRoute:                options.AutoRoute,

protocol/wireguard/endpoint.go

@@ -51,8 +51,6 @@ func NewEndpoint(ctx context.Context, router adapter.Router, logger log.ContextL
 	}
 	if options.Detour == "" {
 		options.IsWireGuardListener = true
-	} else if options.GSO {
-		return nil, E.New("gso is conflict with detour")
 	}
 	outboundDialer, err := dialer.New(ctx, options.DialerOptions)
 	if err != nil {
@@ -72,7 +70,6 @@ func NewEndpoint(ctx context.Context, router adapter.Router, logger log.ContextL
 		},
 		Name:       options.Name,
 		MTU:        options.MTU,
-		GSO:        options.GSO,
 		Address:    options.Address,
 		PrivateKey: options.PrivateKey,
 		ListenPort: options.ListenPort,

protocol/wireguard/outbound.go

@@ -42,6 +42,9 @@ type Outbound struct {
 
 func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextLogger, tag string, options option.LegacyWireGuardOutboundOptions) (adapter.Outbound, error) {
 	deprecated.Report(ctx, deprecated.OptionWireGuardOutbound)
+	if options.GSO {
+		deprecated.Report(ctx, deprecated.OptionWireGuardGSO)
+	}
 	outbound := &Outbound{
 		Adapter:        outbound.NewAdapterWithDialerOptions(C.TypeWireGuard, tag, []string{N.NetworkTCP, N.NetworkUDP}, options.DialerOptions),
 		ctx:            ctx,
@@ -70,7 +73,6 @@ func NewOutbound(ctx context.Context, router adapter.Router, logger log.ContextL
 		},
 		Name:       options.InterfaceName,
 		MTU:        options.MTU,
-		GSO:        options.GSO,
 		Address:    options.LocalAddress,
 		PrivateKey: options.PrivateKey,
 		ResolvePeer: func(domain string) (netip.Addr, error) {

transport/wireguard/device.go

@@ -28,7 +28,6 @@ type DeviceOptions struct {
 	CreateDialer   func(interfaceName string) N.Dialer
 	Name           string
 	MTU            uint32
-	GSO            bool
 	Address        []netip.Prefix
 	AllowedAddress []netip.Prefix
 }

transport/wireguard/device_system.go

@@ -12,7 +12,6 @@ import (
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common"
-	E "github.com/sagernet/sing/common/exceptions"
 	M "github.com/sagernet/sing/common/metadata"
 	N "github.com/sagernet/sing/common/network"
 	"github.com/sagernet/sing/service"
@@ -64,7 +63,7 @@ func (w *systemDevice) Start() error {
 			return it.Addr().Is6()
 		}),
 		MTU:            w.options.MTU,
-		GSO:            w.options.GSO,
+		GSO:            true,
 		InterfaceScope: true,
 		Inet4RouteAddress: common.Filter(w.options.AllowedAddress, func(it netip.Prefix) bool {
 			return it.Addr().Is4()
@@ -87,12 +86,8 @@ func (w *systemDevice) Start() error {
 	}
 	w.options.Logger.Info("started at ", w.options.Name)
 	w.device = tunInterface
-	if w.options.GSO {
 	batchTUN, isBatchTUN := tunInterface.(tun.LinuxTUN)
-		if !isBatchTUN {
+	if isBatchTUN {
-			tunInterface.Close()
-			return E.New("GSO is not supported on current platform")
-		}
 		w.batchDevice = batchTUN
 	}
 	w.events <- wgTun.EventUp

transport/wireguard/endpoint.go

@@ -104,7 +104,6 @@ func NewEndpoint(options EndpointOptions) (*Endpoint, error) {
 		CreateDialer:   options.CreateDialer,
 		Name:           options.Name,
 		MTU:            options.MTU,
-		GSO:            options.GSO,
 		Address:        options.Address,
 		AllowedAddress: allowedAddresses,
 	}

transport/wireguard/endpoint_options.go

@@ -21,7 +21,6 @@ type EndpointOptions struct {
 	CreateDialer func(interfaceName string) N.Dialer
 	Name         string
 	MTU          uint32
-	GSO          bool
 	Address      []netip.Prefix
 	PrivateKey   string
 	ListenPort   uint16