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consensus/ethash, params: eip-2384: bump difficulty bomb (#20347)

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* consensus/ethash, params: implement eip-2384: bump difficulty bomb

* params: EIP 2384 compat checks

* consensus, params: add Muir Glacier block number (mainnet,ropsten) + official name

* core/forkid: forkid tests for muir glacier

* params/config: address review concerns

* params, core/forkid: review nitpicks

* cmd/geth,eth,les: add override option for muir glacier

* params: nit fix
This commit is contained in:
Martin Holst Swende 2019-12-06 10:36:40 +01:00 committed by Péter Szilágyi
parent c9dce0bfd7
commit bc01593afb
10 changed files with 53 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
cmd/geth/config.go
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@ -150,6 +150,9 @@ func makeFullNode(ctx *cli.Context) *node.Node {
if ctx.GlobalIsSet(utils.OverrideIstanbulFlag.Name) {
cfg.Eth.OverrideIstanbul = new(big.Int).SetUint64(ctx.GlobalUint64(utils.OverrideIstanbulFlag.Name))
}
if ctx.GlobalIsSet(utils.OverrideMuirGlacierFlag.Name) {
cfg.Eth.OverrideMuirGlacier = new(big.Int).SetUint64(ctx.GlobalUint64(utils.OverrideMuirGlacierFlag.Name))
}
utils.RegisterEthService(stack, &cfg.Eth)
// Whisper must be explicitly enabled by specifying at least 1 whisper flag or in dev mode

1
cmd/geth/main.go
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@ -70,6 +70,7 @@ var (
utils.NoUSBFlag,
utils.SmartCardDaemonPathFlag,
utils.OverrideIstanbulFlag,
utils.OverrideMuirGlacierFlag,
utils.EthashCacheDirFlag,
utils.EthashCachesInMemoryFlag,
utils.EthashCachesOnDiskFlag,

4
cmd/utils/flags.go
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@ -237,6 +237,10 @@ var (
Name: "override.istanbul",
Usage: "Manually specify Istanbul fork-block, overriding the bundled setting",
}
OverrideMuirGlacierFlag = cli.Uint64Flag{
Name: "override.muirglacier",
Usage: "Manually specify Muir Glacier fork-block, overriding the bundled setting",
}
// Light server and client settings
LightLegacyServFlag = cli.IntFlag{ // Deprecated in favor of light.serve, remove in 2021
Name: "lightserv",

7
consensus/ethash/consensus.go
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@ -44,6 +44,11 @@ var (
maxUncles = 2 // Maximum number of uncles allowed in a single block
allowedFutureBlockTime = 15 * time.Second // Max time from current time allowed for blocks, before they're considered future blocks
// calcDifficultyEip2384 is the difficulty adjustment algorithm as specified by EIP 2384.
// It offsets the bomb 4M blocks from Constantinople, so in total 9M blocks.
// Specification EIP-2384: https://eips.ethereum.org/EIPS/eip-2384
calcDifficultyEip2384 = makeDifficultyCalculator(big.NewInt(9000000))
// calcDifficultyConstantinople is the difficulty adjustment algorithm for Constantinople.
// It returns the difficulty that a new block should have when created at time given the
// parent block's time and difficulty. The calculation uses the Byzantium rules, but with
@ -311,6 +316,8 @@ func (ethash *Ethash) CalcDifficulty(chain consensus.ChainReader, time uint64, p
func CalcDifficulty(config *params.ChainConfig, time uint64, parent *types.Header) *big.Int {
next := new(big.Int).Add(parent.Number, big1)
switch {
case config.IsMuirGlacier(next):
return calcDifficultyEip2384(time, parent)
case config.IsConstantinople(next):
return calcDifficultyConstantinople(time, parent)
case config.IsByzantium(next):

16
core/forkid/forkid_test.go
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@ -57,8 +57,10 @@ func TestCreation(t *testing.T) {
{7279999, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}}, // Last Byzantium block
{7280000, ID{Hash: checksumToBytes(0x668db0af), Next: 9069000}}, // First and last Constantinople, first Petersburg block
{9068999, ID{Hash: checksumToBytes(0x668db0af), Next: 9069000}}, // Last Petersburg block
{9069000, ID{Hash: checksumToBytes(0x879d6e30), Next: 0}}, // Today Istanbul block
{10000000, ID{Hash: checksumToBytes(0x879d6e30), Next: 0}}, // Future Istanbul block
{9069000, ID{Hash: checksumToBytes(0x879d6e30), Next: 9200000}}, // First Istanbul and first Muir Glacier block
{9199999, ID{Hash: checksumToBytes(0x879d6e30), Next: 9200000}}, // Last Istanbul and first Muir Glacier block
{9200000, ID{Hash: checksumToBytes(0xe029e991), Next: 0}}, // First Muir Glacier block
{10000000, ID{Hash: checksumToBytes(0xe029e991), Next: 0}}, // Future Muir Glacier block
},
},
// Ropsten test cases
@ -76,8 +78,10 @@ func TestCreation(t *testing.T) {
{4939393, ID{Hash: checksumToBytes(0x97b544f3), Next: 4939394}}, // Last Constantinople block
{4939394, ID{Hash: checksumToBytes(0xd6e2149b), Next: 6485846}}, // First Petersburg block
{6485845, ID{Hash: checksumToBytes(0xd6e2149b), Next: 6485846}}, // Last Petersburg block
{6485846, ID{Hash: checksumToBytes(0x4bc66396), Next: 0}}, // First Istanbul block
{7500000, ID{Hash: checksumToBytes(0x4bc66396), Next: 0}}, // Future Istanbul block
{6485846, ID{Hash: checksumToBytes(0x4bc66396), Next: 7117117}}, // First Istanbul block
{7117116, ID{Hash: checksumToBytes(0x4bc66396), Next: 7117117}}, // Last Istanbul block
{7117117, ID{Hash: checksumToBytes(0x6727ef90), Next: 0}}, // First Muir Glacier block
{7500000, ID{Hash: checksumToBytes(0x6727ef90), Next: 0}}, // Future
},
},
// Rinkeby test cases
@ -181,11 +185,11 @@ func TestValidation(t *testing.T) {
// Local is mainnet Petersburg, remote is Rinkeby Petersburg.
{7987396, ID{Hash: checksumToBytes(0xafec6b27), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Istanbul, far in the future. Remote announces Gopherium (non existing fork)
// Local is mainnet Muir Glacier, far in the future. Remote announces Gopherium (non existing fork)
// at some future block 88888888, for itself, but past block for local. Local is incompatible.
//
// This case detects non-upgraded nodes with majority hash power (typical Ropsten mess).
{88888888, ID{Hash: checksumToBytes(0x879d6e30), Next: 88888888}, ErrLocalIncompatibleOrStale},
{88888888, ID{Hash: checksumToBytes(0xe029e991), Next: 88888888}, ErrLocalIncompatibleOrStale},
// Local is mainnet Byzantium. Remote is also in Byzantium, but announces Gopherium (non existing
// fork) at block 7279999, before Petersburg. Local is incompatible.

7
core/genesis.go
View File

@ -152,10 +152,10 @@ func (e *GenesisMismatchError) Error() string {
//
// The returned chain configuration is never nil.
func SetupGenesisBlock(db ethdb.Database, genesis *Genesis) (*params.ChainConfig, common.Hash, error) {
return SetupGenesisBlockWithOverride(db, genesis, nil)
return SetupGenesisBlockWithOverride(db, genesis, nil, nil)
}
func SetupGenesisBlockWithOverride(db ethdb.Database, genesis *Genesis, overrideIstanbul *big.Int) (*params.ChainConfig, common.Hash, error) {
func SetupGenesisBlockWithOverride(db ethdb.Database, genesis *Genesis, overrideIstanbul, overrideMuirGlacier *big.Int) (*params.ChainConfig, common.Hash, error) {
if genesis != nil && genesis.Config == nil {
return params.AllEthashProtocolChanges, common.Hash{}, errGenesisNoConfig
}
@ -207,6 +207,9 @@ func SetupGenesisBlockWithOverride(db ethdb.Database, genesis *Genesis, override
if overrideIstanbul != nil {
newcfg.IstanbulBlock = overrideIstanbul
}
if overrideMuirGlacier != nil {
newcfg.MuirGlacierBlock = overrideMuirGlacier
}
if err := newcfg.CheckConfigForkOrder(); err != nil {
return newcfg, common.Hash{}, err
}

2
eth/backend.go
View File

@ -135,7 +135,7 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
if err != nil {
return nil, err
}
chainConfig, genesisHash, genesisErr := core.SetupGenesisBlockWithOverride(chainDb, config.Genesis, config.OverrideIstanbul)
chainConfig, genesisHash, genesisErr := core.SetupGenesisBlockWithOverride(chainDb, config.Genesis, config.OverrideIstanbul, config.OverrideMuirGlacier)
if _, ok := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !ok {
return nil, genesisErr
}

3
eth/config.go
View File

@ -157,4 +157,7 @@ type Config struct {
// Istanbul block override (TODO: remove after the fork)
OverrideIstanbul *big.Int
// MuirGlacier block override (TODO: remove after the fork)
OverrideMuirGlacier *big.Int
}

3
les/client.go
View File

@ -72,7 +72,8 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
if err != nil {
return nil, err
}
chainConfig, genesisHash, genesisErr := core.SetupGenesisBlockWithOverride(chainDb, config.Genesis, config.OverrideIstanbul)
chainConfig, genesisHash, genesisErr := core.SetupGenesisBlockWithOverride(chainDb, config.Genesis,
config.OverrideIstanbul, config.OverrideMuirGlacier)
if _, isCompat := genesisErr.(*params.ConfigCompatError); genesisErr != nil && !isCompat {
return nil, genesisErr
}

21
params/config.go
View File

@ -66,6 +66,7 @@ var (
ConstantinopleBlock: big.NewInt(7280000),
PetersburgBlock: big.NewInt(7280000),
IstanbulBlock: big.NewInt(9069000),
MuirGlacierBlock: big.NewInt(9200000),
Ethash: new(EthashConfig),
}
@ -104,6 +105,7 @@ var (
ConstantinopleBlock: big.NewInt(4230000),
PetersburgBlock: big.NewInt(4939394),
IstanbulBlock: big.NewInt(6485846),
MuirGlacierBlock: big.NewInt(7117117),
Ethash: new(EthashConfig),
}
@ -213,16 +215,16 @@ var (
//
// This configuration is intentionally not using keyed fields to force anyone
// adding flags to the config to also have to set these fields.
AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil}
AllEthashProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil}
// AllCliqueProtocolChanges contains every protocol change (EIPs) introduced
// and accepted by the Ethereum core developers into the Clique consensus.
//
// This configuration is intentionally not using keyed fields to force anyone
// adding flags to the config to also have to set these fields.
AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, &CliqueConfig{Period: 0, Epoch: 30000}}
AllCliqueProtocolChanges = &ChainConfig{big.NewInt(1337), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, nil, &CliqueConfig{Period: 0, Epoch: 30000}}
TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, new(EthashConfig), nil}
TestChainConfig = &ChainConfig{big.NewInt(1), big.NewInt(0), nil, false, big.NewInt(0), common.Hash{}, big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), big.NewInt(0), nil, nil, new(EthashConfig), nil}
TestRules = TestChainConfig.Rules(new(big.Int))
)
@ -292,6 +294,7 @@ type ChainConfig struct {
ConstantinopleBlock *big.Int `json:"constantinopleBlock,omitempty"` // Constantinople switch block (nil = no fork, 0 = already activated)
PetersburgBlock *big.Int `json:"petersburgBlock,omitempty"` // Petersburg switch block (nil = same as Constantinople)
IstanbulBlock *big.Int `json:"istanbulBlock,omitempty"` // Istanbul switch block (nil = no fork, 0 = already on istanbul)
MuirGlacierBlock *big.Int `json:"muirGlacierBlock,omitempty"` // Eip-2384 (bomb delay) switch block (nil = no fork, 0 = already activated)
EWASMBlock *big.Int `json:"ewasmBlock,omitempty"` // EWASM switch block (nil = no fork, 0 = already activated)
// Various consensus engines
@ -329,7 +332,7 @@ func (c *ChainConfig) String() string {
default:
engine = "unknown"
}
return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Petersburg: %v Istanbul: %v Engine: %v}",
return fmt.Sprintf("{ChainID: %v Homestead: %v DAO: %v DAOSupport: %v EIP150: %v EIP155: %v EIP158: %v Byzantium: %v Constantinople: %v Petersburg: %v Istanbul: %v, Muir Glacier: %v, Engine: %v}",
c.ChainID,
c.HomesteadBlock,
c.DAOForkBlock,
@ -341,6 +344,7 @@ func (c *ChainConfig) String() string {
c.ConstantinopleBlock,
c.PetersburgBlock,
c.IstanbulBlock,
c.MuirGlacierBlock,
engine,
)
}
@ -380,6 +384,11 @@ func (c *ChainConfig) IsConstantinople(num *big.Int) bool {
return isForked(c.ConstantinopleBlock, num)
}
// IsMuirGlacier returns whether num is either equal to the Muir Glacier (EIP-2384) fork block or greater.
func (c *ChainConfig) IsMuirGlacier(num *big.Int) bool {
return isForked(c.MuirGlacierBlock, num)
}
// IsPetersburg returns whether num is either
// - equal to or greater than the PetersburgBlock fork block,
// - OR is nil, and Constantinople is active
@ -432,6 +441,7 @@ func (c *ChainConfig) CheckConfigForkOrder() error {
{"constantinopleBlock", c.ConstantinopleBlock},
{"petersburgBlock", c.PetersburgBlock},
{"istanbulBlock", c.IstanbulBlock},
{"muirGlacierBlock", c.MuirGlacierBlock},
} {
if lastFork.name != "" {
// Next one must be higher number
@ -485,6 +495,9 @@ func (c *ChainConfig) checkCompatible(newcfg *ChainConfig, head *big.Int) *Confi
if isForkIncompatible(c.IstanbulBlock, newcfg.IstanbulBlock, head) {
return newCompatError("Istanbul fork block", c.IstanbulBlock, newcfg.IstanbulBlock)
}
if isForkIncompatible(c.MuirGlacierBlock, newcfg.MuirGlacierBlock, head) {
return newCompatError("Muir Glacier fork block", c.MuirGlacierBlock, newcfg.MuirGlacierBlock)
}
if isForkIncompatible(c.EWASMBlock, newcfg.EWASMBlock, head) {
return newCompatError("ewasm fork block", c.EWASMBlock, newcfg.EWASMBlock)
}