add disable L1 charging to eth_call

Author: ganeshvanahalli

core/state_transition.go

@@ -149,6 +149,9 @@ type Message struct {
 	// account nonce in state. It also disables checking that the sender is an EOA.
 	// This field will be set to true for operations like RPC eth_call.
 	SkipAccountChecks bool
+	// L1 charging is disabled when SkipL1Charging is true.
+	// This field might be set to true for operations like RPC eth_call.
+	SkipL1Charging bool
 }
 
 type MessageRunMode uint8

ethclient/ethclient.go

@@ -603,6 +603,9 @@ func toCallArg(msg ethereum.CallMsg) interface{} {
 	if msg.GasPrice != nil {
 		arg["gasPrice"] = (*hexutil.Big)(msg.GasPrice)
 	}
+	if msg.SkipL1Charging {
+		arg["skipL1Charging"] = msg.SkipL1Charging
+	}
 	return arg
 }
 

interfaces.go

@@ -166,7 +166,8 @@ type CallMsg struct {
 	Value     *big.Int        // amount of wei sent along with the call
 	Data      []byte          // input data, usually an ABI-encoded contract method invocation
 
-	AccessList types.AccessList // EIP-2930 access list.
+	AccessList     types.AccessList // EIP-2930 access list.
+	SkipL1Charging bool             // L1 charging is disabled when SkipL1Charging is true
 }
 
 // A ContractCaller provides contract calls, essentially transactions that are executed by

internal/ethapi/transaction_args.go

@@ -44,6 +44,7 @@ type TransactionArgs struct {
 	MaxPriorityFeePerGas *hexutil.Big    `json:"maxPriorityFeePerGas"`
 	Value                *hexutil.Big    `json:"value"`
 	Nonce                *hexutil.Uint64 `json:"nonce"`
+	SkipL1Charging       *bool           `json:"skipL1Charging"`
 
 	// We accept "data" and "input" for backwards-compatibility reasons.
 	// "input" is the newer name and should be preferred by clients.
@@ -267,6 +268,11 @@ func (args *TransactionArgs) ToMessage(globalGasCap uint64, header *types.Header
 		accessList = *args.AccessList
 	}
 
+	skipL1Charging := false
+	if args.SkipL1Charging != nil {
+		skipL1Charging = *args.SkipL1Charging
+	}
+
 	msg := &core.Message{
 		From:              addr,
 		To:                args.To,
@@ -279,6 +285,7 @@ func (args *TransactionArgs) ToMessage(globalGasCap uint64, header *types.Header
 		AccessList:        accessList,
 		SkipAccountChecks: true,
 		TxRunMode:         runMode,
+		SkipL1Charging:    skipL1Charging,
 	}
 	// Arbitrum: raise the gas cap to ignore L1 costs so that it's compute-only
 	if core.InterceptRPCGasCap != nil && state != nil {