block validation

Author: ucwong

core/block_validator.go

@@ -50,6 +50,10 @@ func NewBlockValidator(config *params.ChainConfig, blockchain *BlockChain, engin
 // header's transaction and uncle roots. The headers are assumed to be already
 // validated at this point.
 func (v *BlockValidator) ValidateBody(block *types.Block) error {
+	// check EIP 7934 RLP-encoded block size cap
+	if v.config.IsOsaka(block.Number(), block.Time()) && block.Size() > params.MaxBlockSize {
+		return ErrBlockOversized
+	}
 	// Check whether the block's known, and if not, that it's linkable
 	if v.bc.HasBlockAndState(block.Hash(), block.NumberU64()) {
 		return ErrKnownBlock

core/error.go

@@ -70,4 +70,8 @@ var (
 	ErrInsufficientFundsForTransfer = errors.New("insufficient funds for transfer")
 
 	ErrGasLimitTooHigh = errors.New("transaction gas limit too high")
+
+	// ErrBlockOversized is returned if the size of the RLP-encoded block
+	// exceeds the cap established by EIP 7934
+	ErrBlockOversized = errors.New("block RLP-encoded size exceeds maximum")
 )

core/vm/jump_table.go

@@ -70,6 +70,13 @@ func validate(jt JumpTable) JumpTable {
 
 func newOsakaInstructionSet() JumpTable {
 	instructionSet := newMergeInstructionSet()
+	//enable3860(&instructionSet) // Limit and meter initcode
+	//enable4844(&instructionSet) // EIP-4844 (BLOBHASH opcode)
+	//enable7516(&instructionSet) // EIP-7516 (BLOBBASEFEE opcode)
+	//enable1153(&instructionSet) // EIP-1153 "Transient Storage"
+	//enable6780(&instructionSet) // EIP-6780 SELFDESTRUCT only in same transaction
+	//enable7702(&instructionSet) // EIP-7702 Setcode transaction type
+	//enable4762(&instructionSet)
 	enable7939(&instructionSet) // EIP-7939 (CLZ opcode)
 	return validate(instructionSet)
 }

params/protocol_params.go

@@ -178,6 +178,8 @@ const (
 
 	BlobTxTargetBlobGasPerBlock = 3 * BlobTxBlobGasPerBlob // Target consumable blob gas for data blobs per block (for 1559-like pricing)
 	MaxBlobGasPerBlock          = 6 * BlobTxBlobGasPerBlob // Maximum consumable blob gas for data blobs per block
+
+	MaxBlockSize = 8_388_608 // maximum size of an RLP-encoded block
 )
 
 // Bls12381G1MultiExpDiscountTable is the gas discount table for BLS12-381 G1 multi exponentiation operation