beacon/engine, eth/catalyst, miner: EIP-4788 CL/EL protocol updates (ethereum#27872)

This PR makes EIP-4788 work in the engine API and miner. It also fixes some bugs related to 
EIP-4844 block processing and mining. Changes in detail:

- Header.BeaconRoot has been renamed to ParentBeaconRoot.
- The engine API now implements forkchoiceUpdatedV3
- newPayloadV3 method has been updated with the parentBeaconBlockRoot parameter
- beacon root is now applied to new blocks in miner
- For EIP-4844, block creation now updates the blobGasUsed field of the header

Author: holiman

beacon/engine/errors.go

@@ -80,6 +80,7 @@ var (
 	InvalidPayloadAttributes = &EngineAPIError{code: -38003, msg: "Invalid payload attributes"}
 	TooLargeRequest          = &EngineAPIError{code: -38004, msg: "Too large request"}
 	InvalidParams            = &EngineAPIError{code: -32602, msg: "Invalid parameters"}
+	UnsupportedFork          = &EngineAPIError{code: -38005, msg: "Unsupported fork"}
 
 	STATUS_INVALID         = ForkChoiceResponse{PayloadStatus: PayloadStatusV1{Status: INVALID}, PayloadID: nil}
 	STATUS_SYNCING         = ForkChoiceResponse{PayloadStatus: PayloadStatusV1{Status: SYNCING}, PayloadID: nil}

beacon/engine/gen_blockparams.go

@@ -35,6 +35,7 @@ type PayloadAttributes struct {
 	Random                common.Hash         `json:"prevRandao"            gencodec:"required"`
 	SuggestedFeeRecipient common.Address      `json:"suggestedFeeRecipient" gencodec:"required"`
 	Withdrawals           []*types.Withdrawal `json:"withdrawals"`
+	BeaconRoot            *common.Hash        `json:"parentBeaconBlockRoot"`
 }
 
 // JSON type overrides for PayloadAttributes.
@@ -171,7 +172,7 @@ func decodeTransactions(enc [][]byte) ([]*types.Transaction, error) {
 // and that the blockhash of the constructed block matches the parameters. Nil
 // Withdrawals value will propagate through the returned block. Empty
 // Withdrawals value must be passed via non-nil, length 0 value in params.
-func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash) (*types.Block, error) {
+func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash, beaconRoot *common.Hash) (*types.Block, error) {
 	txs, err := decodeTransactions(params.Transactions)
 	if err != nil {
 		return nil, err
@@ -207,25 +208,25 @@ func ExecutableDataToBlock(params ExecutableData, versionedHashes []common.Hash)
 		withdrawalsRoot = &h
 	}
 	header := &types.Header{
-		ParentHash:      params.ParentHash,
-		UncleHash:       types.EmptyUncleHash,
-		Coinbase:        params.FeeRecipient,
-		Root:            params.StateRoot,
-		TxHash:          types.DeriveSha(types.Transactions(txs), trie.NewStackTrie(nil)),
-		ReceiptHash:     params.ReceiptsRoot,
-		Bloom:           types.BytesToBloom(params.LogsBloom),
-		Difficulty:      common.Big0,
-		Number:          new(big.Int).SetUint64(params.Number),
-		GasLimit:        params.GasLimit,
-		GasUsed:         params.GasUsed,
-		Time:            params.Timestamp,
-		BaseFee:         params.BaseFeePerGas,
-		Extra:           params.ExtraData,
-		MixDigest:       params.Random,
-		WithdrawalsHash: withdrawalsRoot,
-		ExcessBlobGas:   params.ExcessBlobGas,
-		BlobGasUsed:     params.BlobGasUsed,
-		// TODO BeaconRoot
+		ParentHash:       params.ParentHash,
+		UncleHash:        types.EmptyUncleHash,
+		Coinbase:         params.FeeRecipient,
+		Root:             params.StateRoot,
+		TxHash:           types.DeriveSha(types.Transactions(txs), trie.NewStackTrie(nil)),
+		ReceiptHash:      params.ReceiptsRoot,
+		Bloom:            types.BytesToBloom(params.LogsBloom),
+		Difficulty:       common.Big0,
+		Number:           new(big.Int).SetUint64(params.Number),
+		GasLimit:         params.GasLimit,
+		GasUsed:          params.GasUsed,
+		Time:             params.Timestamp,
+		BaseFee:          params.BaseFeePerGas,
+		Extra:            params.ExtraData,
+		MixDigest:        params.Random,
+		WithdrawalsHash:  withdrawalsRoot,
+		ExcessBlobGas:    params.ExcessBlobGas,
+		BlobGasUsed:      params.BlobGasUsed,
+		ParentBeaconRoot: beaconRoot,
 	}
 	block := types.NewBlockWithHeader(header).WithBody(txs, nil /* uncles */).WithWithdrawals(params.Withdrawals)
 	if block.Hash() != params.BlockHash {
@@ -255,7 +256,6 @@ func BlockToExecutableData(block *types.Block, fees *big.Int, sidecars []*types.
 		Withdrawals:   block.Withdrawals(),
 		BlobGasUsed:   block.BlobGasUsed(),
 		ExcessBlobGas: block.ExcessBlobGas(),
-		// TODO BeaconRoot
 	}
 	bundle := BlobsBundleV1{
 		Commitments: make([]hexutil.Bytes, 0),

beacon/engine/types.go

@@ -277,11 +277,11 @@ func (beacon *Beacon) verifyHeader(chain consensus.ChainHeaderReader, header, pa
 			return fmt.Errorf("invalid excessBlobGas: have %d, expected nil", header.ExcessBlobGas)
 		case header.BlobGasUsed != nil:
 			return fmt.Errorf("invalid blobGasUsed: have %d, expected nil", header.BlobGasUsed)
-		case header.BeaconRoot != nil:
-			return fmt.Errorf("invalid beaconRoot, have %#x, expected nil", header.BeaconRoot)
+		case header.ParentBeaconRoot != nil:
+			return fmt.Errorf("invalid parentBeaconRoot, have %#x, expected nil", header.ParentBeaconRoot)
 		}
 	} else {
-		if header.BeaconRoot == nil {
+		if header.ParentBeaconRoot == nil {
 			return errors.New("header is missing beaconRoot")
 		}
 		if err := eip4844.VerifyEIP4844Header(parent, header); err != nil {

consensus/beacon/consensus.go

@@ -411,7 +411,7 @@ func makeHeader(chain consensus.ChainReader, parent *types.Block, state *state.S
 		excessBlobGas := eip4844.CalcExcessBlobGas(parentExcessBlobGas, parentBlobGasUsed)
 		header.ExcessBlobGas = &excessBlobGas
 		header.BlobGasUsed = new(uint64)
-		header.BeaconRoot = new(common.Hash)
+		header.ParentBeaconRoot = new(common.Hash)
 	}
 	return header
 }

core/chain_makers.go

@@ -483,6 +483,11 @@ func (g *Genesis) ToBlock() *types.Block {
 			withdrawals = make([]*types.Withdrawal, 0)
 		}
 		if conf.IsCancun(num, g.Timestamp) {
+			// EIP-4788: The parentBeaconBlockRoot of the genesis block is always
+			// the zero hash. This is because the genesis block does not have a parent
+			// by definition.
+			head.ParentBeaconRoot = new(common.Hash)
+			// EIP-4844 fields
 			head.ExcessBlobGas = g.ExcessBlobGas
 			head.BlobGasUsed = g.BlobGasUsed
 			if head.ExcessBlobGas == nil {
@@ -491,9 +496,6 @@ func (g *Genesis) ToBlock() *types.Block {
 			if head.BlobGasUsed == nil {
 				head.BlobGasUsed = new(uint64)
 			}
-			if head.BeaconRoot == nil {
-				head.BeaconRoot = new(common.Hash)
-			}
 		}
 	}
 	return types.NewBlock(head, nil, nil, nil, trie.NewStackTrie(nil)).WithWithdrawals(withdrawals)

core/genesis.go

@@ -135,6 +135,9 @@ func applyTransaction(msg *Message, config *params.ChainConfig, gp *GasPool, sta
 	receipt.TxHash = tx.Hash()
 	receipt.GasUsed = result.UsedGas
 
+	receipt.BlobGasUsed = uint64(len(tx.BlobHashes()) * params.BlobTxBlobGasPerBlob)
+	receipt.BlobGasPrice = tx.BlobGasFeeCap()
+
 	// If the transaction created a contract, store the creation address in the receipt.
 	if msg.To == nil {
 		receipt.ContractAddress = crypto.CreateAddress(evm.TxContext.Origin, tx.Nonce())

core/state_processor.go

@@ -412,7 +412,7 @@ func GenerateBadBlock(parent *types.Block, engine consensus.Engine, txs types.Tr
 		header.BlobGasUsed = &used
 
 		beaconRoot := common.HexToHash("0xbeac00")
-		header.BeaconRoot = &beaconRoot
+		header.ParentBeaconRoot = &beaconRoot
 	}
 	// Assemble and return the final block for sealing
 	if config.IsShanghai(header.Number, header.Time) {

core/state_processor_test.go

@@ -91,8 +91,8 @@ type Header struct {
 	// ExcessBlobGas was added by EIP-4844 and is ignored in legacy headers.
 	ExcessBlobGas *uint64 `json:"excessBlobGas" rlp:"optional"`
 
-	// BeaconRoot was added by EIP-4788 and is ignored in legacy headers.
-	BeaconRoot *common.Hash `json:"parentBeaconBlockRoot" rlp:"optional"`
+	// ParentBeaconRoot was added by EIP-4788 and is ignored in legacy headers.
+	ParentBeaconRoot *common.Hash `json:"parentBeaconBlockRoot" rlp:"optional"`
 }
 
 // field type overrides for gencodec
@@ -300,9 +300,9 @@ func CopyHeader(h *Header) *Header {
 		cpy.BlobGasUsed = new(uint64)
 		*cpy.BlobGasUsed = *h.BlobGasUsed
 	}
-	if h.BeaconRoot != nil {
-		cpy.BeaconRoot = new(common.Hash)
-		*cpy.BeaconRoot = *h.BeaconRoot
+	if h.ParentBeaconRoot != nil {
+		cpy.ParentBeaconRoot = new(common.Hash)
+		*cpy.ParentBeaconRoot = *h.ParentBeaconRoot
 	}
 	return &cpy
 }
@@ -383,7 +383,7 @@ func (b *Block) BaseFee() *big.Int {
 	return new(big.Int).Set(b.header.BaseFee)
 }
 
-func (b *Block) BeaconRoot() *common.Hash { return b.header.BeaconRoot }
+func (b *Block) BeaconRoot() *common.Hash { return b.header.ParentBeaconRoot }
 
 func (b *Block) ExcessBlobGas() *uint64 {
 	var excessBlobGas *uint64