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consensus: define MaxGasLimit as a const in params (#24092)

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* consensus: use the maxGasLimit constant to check the header.GasLimit to avoid creating new variables repeatedly

* consensus: check the header.GasLimit by the public constant MaxGasLimit

* consensus: check the header.GasLimit by the constant MaxGasLimit
This commit is contained in:
jovijovi 2021-12-14 17:17:25 +08:00 committed by GitHub
parent 72c2c0ae7e
commit b3b8b268eb
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 11 additions and 12 deletions
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6
consensus/beacon/consensus.go
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@ -26,6 +26,7 @@ import (
"github.com/ethereum/go-ethereum/consensus/misc" "github.com/ethereum/go-ethereum/consensus/misc"
"github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc" "github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/trie" "github.com/ethereum/go-ethereum/trie"
) )
@ -196,9 +197,8 @@ func (beacon *Beacon) verifyHeader(chain consensus.ChainHeaderReader, header, pa
return fmt.Errorf("invalid difficulty: have %v, want %v", header.Difficulty, beaconDifficulty) return fmt.Errorf("invalid difficulty: have %v, want %v", header.Difficulty, beaconDifficulty)
} }
// Verify that the gas limit is <= 2^63-1 // Verify that the gas limit is <= 2^63-1
cap := uint64(0x7fffffffffffffff) if header.GasLimit > params.MaxGasLimit {
if header.GasLimit > cap { return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, params.MaxGasLimit)
return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, cap)
} }
// Verify that the gasUsed is <= gasLimit // Verify that the gasUsed is <= gasLimit
if header.GasUsed > header.GasLimit { if header.GasUsed > header.GasLimit {

5
consensus/clique/clique.go
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@ -295,9 +295,8 @@ func (c *Clique) verifyHeader(chain consensus.ChainHeaderReader, header *types.H
} }
} }
// Verify that the gas limit is <= 2^63-1 // Verify that the gas limit is <= 2^63-1
cap := uint64(0x7fffffffffffffff) if header.GasLimit > params.MaxGasLimit {
if header.GasLimit > cap { return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, params.MaxGasLimit)
return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, cap)
} }
// If all checks passed, validate any special fields for hard forks // If all checks passed, validate any special fields for hard forks
if err := misc.VerifyForkHashes(chain.Config(), header, false); err != nil { if err := misc.VerifyForkHashes(chain.Config(), header, false); err != nil {

5
consensus/ethash/consensus.go
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@ -281,9 +281,8 @@ func (ethash *Ethash) verifyHeader(chain consensus.ChainHeaderReader, header, pa
return fmt.Errorf("invalid difficulty: have %v, want %v", header.Difficulty, expected) return fmt.Errorf("invalid difficulty: have %v, want %v", header.Difficulty, expected)
} }
// Verify that the gas limit is <= 2^63-1 // Verify that the gas limit is <= 2^63-1
cap := uint64(0x7fffffffffffffff) if header.GasLimit > params.MaxGasLimit {
if header.GasLimit > cap { return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, params.MaxGasLimit)
return fmt.Errorf("invalid gasLimit: have %v, max %v", header.GasLimit, cap)
} }
// Verify that the gasUsed is <= gasLimit // Verify that the gasUsed is <= gasLimit
if header.GasUsed > header.GasLimit { if header.GasUsed > header.GasLimit {

1
params/protocol_params.go
View File

@ -21,6 +21,7 @@ import "math/big"
const ( const (
GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations. GasLimitBoundDivisor uint64 = 1024 // The bound divisor of the gas limit, used in update calculations.
MinGasLimit uint64 = 5000 // Minimum the gas limit may ever be. MinGasLimit uint64 = 5000 // Minimum the gas limit may ever be.
MaxGasLimit uint64 = 0x7fffffffffffffff // Maximum the gas limit (2^63-1).
GenesisGasLimit uint64 = 4712388 // Gas limit of the Genesis block. GenesisGasLimit uint64 = 4712388 // Gas limit of the Genesis block.
MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis. MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis.