op-service/eth: Expose GasLimit from the header in BlockInfo

op-service/eth/block_info.go

@@ -20,6 +20,7 @@ type BlockInfo interface {
 	BaseFee() *big.Int
 	ReceiptHash() common.Hash
 	GasUsed() uint64
+	GasLimit() uint64
 
 	// HeaderRLP returns the RLP of the block header as per consensus rules
 	// Returns an error if the header RLP could not be written
@@ -100,6 +101,10 @@ func (h headerBlockInfo) GasUsed() uint64 {
 	return h.Header.GasUsed
 }
 
+func (h headerBlockInfo) GasLimit() uint64 {
+	return h.Header.GasLimit
+}
+
 func (h headerBlockInfo) HeaderRLP() ([]byte, error) {
 	return rlp.EncodeToBytes(h.Header)
 }

op-service/sources/types.go

@@ -78,6 +78,10 @@ func (h headerInfo) GasUsed() uint64 {
 	return h.Header.GasUsed
 }
 
+func (h headerInfo) GasLimit() uint64 {
+	return h.Header.GasLimit
+}
+
 func (h headerInfo) HeaderRLP() ([]byte, error) {
 	return rlp.EncodeToBytes(h.Header)
 }

op-service/testutils/l1info.go

@@ -23,6 +23,7 @@ type MockBlockInfo struct {
 	InfoBaseFee     *big.Int
 	InfoReceiptRoot common.Hash
 	InfoGasUsed     uint64
+	InfoGasLimit    uint64
 	InfoHeaderRLP   []byte
 }
 
@@ -66,6 +67,10 @@ func (l *MockBlockInfo) GasUsed() uint64 {
 	return l.InfoGasUsed
 }
 
+func (l *MockBlockInfo) GasLimit() uint64 {
+	return l.InfoGasLimit
+}
+
 func (l *MockBlockInfo) ID() eth.BlockID {
 	return eth.BlockID{Hash: l.InfoHash, Number: l.InfoNum}
 }