Disable MESS

cmd/geth/config.go

@@ -174,6 +174,11 @@ func makeFullNode(ctx *cli.Context) (*node.Node, ethapi.Backend) {
 			cfg.Eth.ECBP1100 = new(big.Int).SetUint64(n)
 		}
 	}
+	if ctx.IsSet(utils.ECBP1100DisableFlag.Name) {
+		if n := ctx.Uint64(utils.ECBP1100DisableFlag.Name); n != math.MaxUint64 {
+			cfg.Eth.ECBP1100Disable = new(big.Int).SetUint64(n)
+		}
+	}
 	if ctx.IsSet(utils.ECBP1100NoDisableFlag.Name) {
 		if enable := ctx.Bool(utils.ECBP1100NoDisableFlag.Name); enable {
 			cfg.Eth.ECBP1100NoDisable = &enable

cmd/geth/main.go

@@ -167,6 +167,7 @@ var (
 		utils.MinerNotifyFullFlag,
 		utils.ECBP1100Flag,
 		utils.ECBP1100NoDisableFlag,
+		utils.ECBP1100DisableFlag,
 		configFileFlag,
 	}, utils.NetworkFlags, utils.DatabasePathFlags)
 

cmd/utils/flags.go

@@ -1068,6 +1068,11 @@ Please note that --` + MetricsHTTPFlag.Name + ` must be set to start the server.
 		Usage: "Configure ECBP-1100 (MESS) block activation number",
 		Value: math.MaxUint64,
 	}
+	ECBP1100DisableFlag = &cli.Uint64Flag{
+		Name:  "ecbp1100.disable",
+		Usage: "Disable ECBP-1100 (MESS) block activation number",
+		Value: math.MaxUint64,
+	}
 	ECBP1100NoDisableFlag = &cli.BoolFlag{
 		Name:  "ecbp1100.nodisable",
 		Usage: "Short-circuit ECBP-1100 (MESS) disable mechanisms; (yields a permanent-once-activated state, deactivating auto-shutoff mechanisms)",

eth/backend.go

@@ -238,6 +238,14 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 			}
 		}
 	}
+	if config.ECBP1100Disable != nil {
+		if n := config.ECBP1100Disable.Uint64(); n != math.MaxUint64 {
+			if err := eth.blockchain.Config().SetECBP1100DisableTransition(&n); err != nil {
+				return nil, err
+			}
+		}
+	}
+
 	if config.ECBP1100NoDisable != nil {
 		if *config.ECBP1100NoDisable {
 			eth.blockchain.ArtificialFinalityNoDisable(1)

eth/ethconfig/config.go

@@ -218,6 +218,8 @@ type Config struct {
 
 	// Manual configuration field for ECBP1100 activation number. Used for modifying genesis config via CLI flag.
 	ECBP1100 *big.Int
+	// Manual configuration field for ECBP1100's disablement block number. Used for modifying genesis config via CLI flag.
+	ECBP1100Disable *big.Int
 
 	// ECBP1100NoDisable overrides
 	// When this value is *true, ECBP100 will not (ever) be disabled; when *false, it will never be enabled.

params/config_classic.go

@@ -81,8 +81,9 @@ var (
 		EIP2028FBlock: big.NewInt(10_500_839),
 		EIP2200FBlock: big.NewInt(10_500_839), // RePetersburg (=~ re-1283)
 
-		ECBP1100FBlock: big.NewInt(11_380_000), // ETA 09 Oct 2020
-		ECIP1099FBlock: big.NewInt(11_700_000), // Etchash (DAG size limit)
+		ECBP1100FBlock:        big.NewInt(11_380_000), // ETA 09 Oct 2020
+		ECBP1100DisableFBlock: big.NewInt(69_420_123),
+		ECIP1099FBlock:        big.NewInt(11_700_000), // Etchash (DAG size limit)
 
 		// Berlin eq, aka Magneto
 		EIP2565FBlock: big.NewInt(13_189_133),

params/types/coregeth/chain_config.go

@@ -184,8 +184,9 @@ type CoreGethChainConfig struct {
 	ECIP1017EraRounds  *big.Int `json:"ecip1017EraRounds,omitempty"` // ECIP1017 era rounds
 	ECIP1080FBlock     *big.Int `json:"ecip1080FBlock,omitempty"`
 
-	ECIP1099FBlock *big.Int `json:"ecip1099FBlock,omitempty"` // ECIP1099 etchash HF block
-	ECBP1100FBlock *big.Int `json:"ecbp1100FBlock,omitempty"` // ECBP1100:MESS artificial finality
+	ECIP1099FBlock        *big.Int `json:"ecip1099FBlock,omitempty"`        // ECIP1099 etchash HF block
+	ECBP1100FBlock        *big.Int `json:"ecbp1100FBlock,omitempty"`        // ECBP1100:MESS artificial finality
+	ECBP1100DisableFBlock *big.Int `json:"ecbp1100DisableFBlock,omitempty"` // Disable ECBP1100:MESS artificial finality
 
 	// EIP-2315: Simple Subroutines
 	// https://eips.ethereum.org/EIPS/eip-2315

params/types/coregeth/chain_config_configurator.go

@@ -28,6 +28,9 @@ package coregeth
 
 import (
 	"math/big"
+	"reflect"
+	"runtime"
+	"strings"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/math"
@@ -424,6 +427,15 @@ func (c *CoreGethChainConfig) SetECBP1100Transition(n *uint64) error {
 	return nil
 }
 
+func (c *CoreGethChainConfig) GetECBP1100DisableTransition() *uint64 {
+	return bigNewU64(c.ECBP1100DisableFBlock)
+}
+
+func (c *CoreGethChainConfig) SetECBP1100DisableTransition(n *uint64) error {
+	c.ECBP1100DisableFBlock = setBig(c.ECBP1100DisableFBlock, n)
+	return nil
+}
+
 func (c *CoreGethChainConfig) GetEIP2315Transition() *uint64 {
 	return bigNewU64(c.EIP2315FBlock)
 }
@@ -669,6 +681,13 @@ func (c *CoreGethChainConfig) IsEnabled(fn func() *uint64, n *big.Int) bool {
 	if f == nil || n == nil {
 		return false
 	}
+	fnName := runtime.FuncForPC(reflect.ValueOf(fn).Pointer()).Name()
+	if strings.Contains(fnName, "ECBP1100Transition") {
+		disabledTransition := c.GetECBP1100DisableTransition()
+		if disabledTransition != nil {
+			return big.NewInt(int64(*disabledTransition)).Cmp(n) > 0 && big.NewInt(int64(*f)).Cmp(n) <= 0
+		}
+	}
 	return big.NewInt(int64(*f)).Cmp(n) <= 0
 }
 

params/types/coregeth/chain_config_test.go

@@ -49,3 +49,43 @@ func TestCoreGethChainConfig_String(t *testing.T) {
 	t.Skip("(noop) development use only")
 	t.Log(testConfig.String())
 }
+
+func TestCoreGethChainConfig_ECBP1100Disable(t *testing.T) {
+	var _testConfig = &CoreGethChainConfig{}
+	*_testConfig = *testConfig
+
+	enable := uint64(100)
+	disable := uint64(200)
+	_testConfig.SetECBP1100Transition(&enable)
+	_testConfig.SetECBP1100DisableTransition(&disable)
+
+	n := uint64(10)
+	bigN := new(big.Int).SetUint64(n)
+	if _testConfig.IsEnabled(_testConfig.GetECBP1100Transition, bigN) {
+		t.Errorf("ECBP1100 should be not yet be enabled at block %d", n)
+	}
+
+	n = uint64(100)
+	bigN = new(big.Int).SetUint64(n)
+	if !_testConfig.IsEnabled(_testConfig.GetECBP1100Transition, bigN) {
+		t.Errorf("ECBP1100 should be enabled at block %d", n)
+	}
+
+	n = uint64(110)
+	bigN = new(big.Int).SetUint64(n)
+	if !_testConfig.IsEnabled(_testConfig.GetECBP1100Transition, bigN) {
+		t.Errorf("ECBP1100 should be enabled at block %d", n)
+	}
+
+	n = uint64(200)
+	bigN = new(big.Int).SetUint64(n)
+	if _testConfig.IsEnabled(_testConfig.GetECBP1100Transition, bigN) {
+		t.Errorf("ECBP1100 should be disabled at block %d", n)
+	}
+
+	n = uint64(210)
+	bigN = new(big.Int).SetUint64(n)
+	if _testConfig.IsEnabled(_testConfig.GetECBP1100Transition, bigN) {
+		t.Errorf("ECBP1100 should be disabled at block %d", n)
+	}
+}

params/types/ctypes/configurator_iface.go

@@ -142,6 +142,9 @@ type ProtocolSpecifier interface {
 
 	GetECBP1100Transition() *uint64
 	SetECBP1100Transition(n *uint64) error
+	GetECBP1100DisableTransition() *uint64
+	SetECBP1100DisableTransition(n *uint64) error
+
 	GetEIP2315Transition() *uint64
 	SetEIP2315Transition(n *uint64) error
 

params/types/genesisT/genesis.go

@@ -789,6 +789,14 @@ func (g *Genesis) SetECBP1100Transition(n *uint64) error {
 	return g.Config.SetECBP1100Transition(n)
 }
 
+func (g *Genesis) GetECBP1100DisableTransition() *uint64 {
+	return g.Config.GetECBP1100DisableTransition()
+}
+
+func (g *Genesis) SetECBP1100DisableTransition(n *uint64) error {
+	return g.Config.SetECBP1100DisableTransition(n)
+}
+
 func (g *Genesis) IsEnabled(fn func() *uint64, n *big.Int) bool {
 	return g.Config.IsEnabled(fn, n)
 }

params/types/goethereum/goethereum.go

@@ -99,7 +99,8 @@ type ChainConfig struct {
 	ECIP1080Transition *big.Int `json:"-"`
 
 	// Cache types for use with testing, but will not show up in config API.
-	ecbp1100Transition *big.Int
+	ecbp1100Transition        *big.Int
+	ecbp1100DisableTransition *big.Int
 
 	Lyra2NonceTransitionBlock *big.Int `json:"lyra2NonceTransitionBlock,omitempty"`
 }

params/types/goethereum/goethereum_configurator.go

@@ -18,6 +18,9 @@ package goethereum
 
 import (
 	"math/big"
+	"reflect"
+	"runtime"
+	"strings"
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/params/types/ctypes"
@@ -449,6 +452,15 @@ func (c *ChainConfig) SetECBP1100Transition(n *uint64) error {
 	return nil
 }
 
+func (c *ChainConfig) GetECBP1100DisableTransition() *uint64 {
+	return bigNewU64(c.ecbp1100DisableTransition)
+}
+
+func (c *ChainConfig) SetECBP1100DisableTransition(n *uint64) error {
+	c.ecbp1100DisableTransition = setBig(c.ecbp1100DisableTransition, n)
+	return nil
+}
+
 // GetEIP2315Transition implements EIP2537.
 // This logic is written but not configured for any Ethereum-supported networks, yet.
 func (c *ChainConfig) GetEIP2315Transition() *uint64 {
@@ -691,6 +703,13 @@ func (c *ChainConfig) IsEnabled(fn func() *uint64, n *big.Int) bool {
 	if f == nil || n == nil {
 		return false
 	}
+	fnName := runtime.FuncForPC(reflect.ValueOf(fn).Pointer()).Name()
+	if strings.Contains(fnName, "ECBP1100Transition") {
+		disabledTransition := c.GetECBP1100DisableTransition()
+		if disabledTransition != nil {
+			return big.NewInt(int64(*disabledTransition)).Cmp(n) > 0 && big.NewInt(int64(*f)).Cmp(n) <= 0
+		}
+	}
 	return big.NewInt(int64(*f)).Cmp(n) <= 0
 }