all: replace data gas to blob gas in comments (ethereum#27825)

* eth: excessDataGas -> excessBlobGas

* consensus: data gas -> blob gas

* core: data gas -> blob gas

* params: data gas -> blob gas

consensus/misc/eip4844/eip4844.go

@@ -41,12 +41,12 @@ func VerifyEIP4844Header(parent, header *types.Header) error {
 	if header.BlobGasUsed == nil {
 		return errors.New("header is missing blobGasUsed")
 	}
-	// Verify that the data gas used remains within reasonable limits.
+	// Verify that the blob gas used remains within reasonable limits.
 	if *header.BlobGasUsed > params.BlobTxMaxBlobGasPerBlock {
-		return fmt.Errorf("data gas used %d exceeds maximum allowance %d", *header.BlobGasUsed, params.BlobTxMaxBlobGasPerBlock)
+		return fmt.Errorf("blob gas used %d exceeds maximum allowance %d", *header.BlobGasUsed, params.BlobTxMaxBlobGasPerBlock)
 	}
 	if *header.BlobGasUsed%params.BlobTxBlobGasPerBlob != 0 {
-		return fmt.Errorf("data gas used %d not a multiple of data gas per blob %d", header.BlobGasUsed, params.BlobTxBlobGasPerBlob)
+		return fmt.Errorf("blob gas used %d not a multiple of blob gas per blob %d", header.BlobGasUsed, params.BlobTxBlobGasPerBlob)
 	}
 	// Verify the excessBlobGas is correct based on the parent header
 	var (
@@ -65,8 +65,8 @@ func VerifyEIP4844Header(parent, header *types.Header) error {
 	return nil
 }
 
-// CalcExcessBlobGas calculates the excess data gas after applying the set of
-// blobs on top of the excess data gas.
+// CalcExcessBlobGas calculates the excess blob gas after applying the set of
+// blobs on top of the excess blob gas.
 func CalcExcessBlobGas(parentExcessBlobGas uint64, parentBlobGasUsed uint64) uint64 {
 	excessBlobGas := parentExcessBlobGas + parentBlobGasUsed
 	if excessBlobGas < params.BlobTxTargetBlobGasPerBlock {
@@ -75,7 +75,7 @@ func CalcExcessBlobGas(parentExcessBlobGas uint64, parentBlobGasUsed uint64) uin
 	return excessBlobGas - params.BlobTxTargetBlobGasPerBlock
 }
 
-// CalcBlobFee calculates the blobfee from the header's excess data gas field.
+// CalcBlobFee calculates the blobfee from the header's excess blob gas field.
 func CalcBlobFee(excessBlobGas uint64) *big.Int {
 	return fakeExponential(minBlobGasPrice, new(big.Int).SetUint64(excessBlobGas), blobGaspriceUpdateFraction)
 }

consensus/misc/eip4844/eip4844_test.go

@@ -30,19 +30,19 @@ func TestCalcExcessBlobGas(t *testing.T) {
 		blobs  uint64
 		want   uint64
 	}{
-		// The excess data gas should not increase from zero if the used blob
+		// The excess blob gas should not increase from zero if the used blob
 		// slots are below - or equal - to the target.
 		{0, 0, 0},
 		{0, 1, 0},
 		{0, params.BlobTxTargetBlobGasPerBlock / params.BlobTxBlobGasPerBlob, 0},
 
-		// If the target data gas is exceeded, the excessBlobGas should increase
+		// If the target blob gas is exceeded, the excessBlobGas should increase
 		// by however much it was overshot
 		{0, (params.BlobTxTargetBlobGasPerBlock / params.BlobTxBlobGasPerBlob) + 1, params.BlobTxBlobGasPerBlob},
 		{1, (params.BlobTxTargetBlobGasPerBlock / params.BlobTxBlobGasPerBlob) + 1, params.BlobTxBlobGasPerBlob + 1},
 		{1, (params.BlobTxTargetBlobGasPerBlock / params.BlobTxBlobGasPerBlob) + 2, 2*params.BlobTxBlobGasPerBlob + 1},
 
-		// The excess data gas should decrease by however much the target was
+		// The excess blob gas should decrease by however much the target was
 		// under-shot, capped at zero.
 		{params.BlobTxTargetBlobGasPerBlock, params.BlobTxTargetBlobGasPerBlock / params.BlobTxBlobGasPerBlob, params.BlobTxTargetBlobGasPerBlock},
 		{params.BlobTxTargetBlobGasPerBlock, (params.BlobTxTargetBlobGasPerBlock / params.BlobTxBlobGasPerBlob) - 1, params.BlobTxBlobGasPerBlob},
@@ -52,7 +52,7 @@ func TestCalcExcessBlobGas(t *testing.T) {
 	for _, tt := range tests {
 		result := CalcExcessBlobGas(tt.excess, tt.blobs*params.BlobTxBlobGasPerBlob)
 		if result != tt.want {
-			t.Errorf("excess data gas mismatch: have %v, want %v", result, tt.want)
+			t.Errorf("excess blob gas mismatch: have %v, want %v", result, tt.want)
 		}
 	}
 }

core/block_validator.go

@@ -91,7 +91,7 @@ func (v *BlockValidator) ValidateBody(block *types.Block) error {
 	}
 	if header.BlobGasUsed != nil {
 		if want := *header.BlobGasUsed / params.BlobTxBlobGasPerBlob; uint64(blobs) != want { // div because the header is surely good vs the body might be bloated
-			return fmt.Errorf("data gas used mismatch (header %v, calculated %v)", *header.BlobGasUsed, blobs*params.BlobTxBlobGasPerBlob)
+			return fmt.Errorf("blob gas used mismatch (header %v, calculated %v)", *header.BlobGasUsed, blobs*params.BlobTxBlobGasPerBlob)
 		}
 	} else {
 		if blobs > 0 {

core/error.go

@@ -102,6 +102,6 @@ var (
 	ErrSenderNoEOA = errors.New("sender not an eoa")
 
 	// ErrBlobFeeCapTooLow is returned if the transaction fee cap is less than the
-	// data gas fee of the block.
-	ErrBlobFeeCapTooLow = errors.New("max fee per data gas less than block data gas fee")
+	// blob gas fee of the block.
+	ErrBlobFeeCapTooLow = errors.New("max fee per blob gas less than block blob gas fee")
 )

core/rawdb/accessors_chain.go

@@ -645,7 +645,7 @@ func ReadReceipts(db ethdb.Reader, hash common.Hash, number uint64, time uint64,
 	} else {
 		baseFee = header.BaseFee
 	}
-	// Compute effective data gas price.
+	// Compute effective blob gas price.
 	var blobGasPrice *big.Int
 	if header != nil && header.ExcessBlobGas != nil {
 		blobGasPrice = eip4844.CalcBlobFee(*header.ExcessBlobGas)

core/state_transition.go

@@ -467,7 +467,7 @@ func (st *StateTransition) gasUsed() uint64 {
 	return st.initialGas - st.gasRemaining
 }
 
-// blobGasUsed returns the amount of data gas used by the message.
+// blobGasUsed returns the amount of blob gas used by the message.
 func (st *StateTransition) blobGasUsed() uint64 {
 	return uint64(len(st.msg.BlobHashes) * params.BlobTxBlobGasPerBlob)
 }

core/txpool/blobpool/blobpool.go

@@ -184,7 +184,7 @@ func newBlobTxMeta(id uint64, size uint32, tx *types.Transaction) *blobTxMeta {
 //   - Local txs are meaningless. Mining pools historically used local transactions
 //     for payouts or for backdoor deals. With 1559 in place, the basefee usually
 //     dominates the final price, so 0 or non-0 tip doesn't change much. Blob txs
-//     retain the 1559 2D gas pricing (and introduce on top a dynamic data gas fee),
+//     retain the 1559 2D gas pricing (and introduce on top a dynamic blob gas fee),
 //     so locality is moot. With a disk backed blob pool avoiding the resend issue,
 //     there's also no need to save own transactions for later.
 //

core/txpool/blobpool/blobpool_test.go

@@ -122,7 +122,7 @@ func (bc *testBlockChain) CurrentBlock() *types.Header {
 	}
 	baseFee := lo
 
-	// The excess data gas at 2^27 translates into a blob fee higher than mainnet
+	// The excess blob gas at 2^27 translates into a blob fee higher than mainnet
 	// ether existence, use that as a cap for the tests.
 	lo = new(big.Int)
 	hi = new(big.Int).Exp(big.NewInt(2), big.NewInt(27), nil)

core/types/transaction.go

@@ -288,10 +288,10 @@ func (tx *Transaction) GasTipCap() *big.Int { return new(big.Int).Set(tx.inner.g
 // GasFeeCap returns the fee cap per gas of the transaction.
 func (tx *Transaction) GasFeeCap() *big.Int { return new(big.Int).Set(tx.inner.gasFeeCap()) }
 
-// BlobGas returns the data gas limit of the transaction for blob transactions, 0 otherwise.
+// BlobGas returns the blob gas limit of the transaction for blob transactions, 0 otherwise.
 func (tx *Transaction) BlobGas() uint64 { return tx.inner.blobGas() }
 
-// BlobGasFeeCap returns the data gas fee cap per data gas of the transaction for blob transactions, nil otherwise.
+// BlobGasFeeCap returns the blob gas fee cap per blob gas of the transaction for blob transactions, nil otherwise.
 func (tx *Transaction) BlobGasFeeCap() *big.Int { return tx.inner.blobGasFeeCap() }
 
 // BlobHashes returns the hases of the blob commitments for blob transactions, nil otherwise.

eth/catalyst/api.go

@@ -451,7 +451,7 @@ func (api *ConsensusAPI) NewPayloadV3(params engine.ExecutableData, versionedHas
 	}
 
 	if params.ExcessBlobGas == nil {
-		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(fmt.Errorf("nil excessDataGas post-cancun"))
+		return engine.PayloadStatusV1{Status: engine.INVALID}, engine.InvalidParams.With(errors.New("nil excessBlobGas post-cancun"))
 	}
 	var hashes []common.Hash
 	if versionedHashes != nil {

params/protocol_params.go

@@ -163,11 +163,11 @@ const (
 	BlobTxBytesPerFieldElement         = 32      // Size in bytes of a field element
 	BlobTxFieldElementsPerBlob         = 4096    // Number of field elements stored in a single data blob
 	BlobTxHashVersion                  = 0x01    // Version byte of the commitment hash
-	BlobTxMaxBlobGasPerBlock           = 1 << 19 // Maximum consumable data gas for data blobs per block
-	BlobTxTargetBlobGasPerBlock        = 1 << 18 // Target consumable data gas for data blobs per block (for 1559-like pricing)
+	BlobTxMaxBlobGasPerBlock           = 1 << 19 // Maximum consumable blob gas for data blobs per block
+	BlobTxTargetBlobGasPerBlock        = 1 << 18 // Target consumable blob gas for data blobs per block (for 1559-like pricing)
 	BlobTxBlobGasPerBlob               = 1 << 17 // Gas consumption of a single data blob (== blob byte size)
 	BlobTxMinBlobGasprice              = 1       // Minimum gas price for data blobs
-	BlobTxBlobGaspriceUpdateFraction   = 2225652 // Controls the maximum rate of change for data gas price
+	BlobTxBlobGaspriceUpdateFraction   = 2225652 // Controls the maximum rate of change for blob gas price
 	BlobTxPointEvaluationPrecompileGas = 50000   // Gas price for the point evaluation precompile.
 )