core, params: polish net gas metering PR a bit

2 files changed, 27 insertions, 8 deletions

diff --git a/params/config.go b/params/config.go
index 629720550..1c3e25eb7 100644
--- a/params/config.go
+++ b/params/config.go
@@ -335,7 +335,7 @@ func (err *ConfigCompatError) Error() string {
 type Rules struct {
 	ChainID                                   *big.Int
 	IsHomestead, IsEIP150, IsEIP155, IsEIP158 bool
-	IsByzantium                               bool
+	IsByzantium, IsConstantinople             bool
 }
 
 // Rules ensures c's ChainID is not nil.
@@ -344,5 +344,13 @@ func (c *ChainConfig) Rules(num *big.Int) Rules {
 	if chainID == nil {
 		chainID = new(big.Int)
 	}
-	return Rules{ChainID: new(big.Int).Set(chainID), IsHomestead: c.IsHomestead(num), IsEIP150: c.IsEIP150(num), IsEIP155: c.IsEIP155(num), IsEIP158: c.IsEIP158(num), IsByzantium: c.IsByzantium(num)}
+	return Rules{
+		ChainID:          new(big.Int).Set(chainID),
+		IsHomestead:      c.IsHomestead(num),
+		IsEIP150:         c.IsEIP150(num),
+		IsEIP155:         c.IsEIP155(num),
+		IsEIP158:         c.IsEIP158(num),
+		IsByzantium:      c.IsByzantium(num),
+		IsConstantinople: c.IsConstantinople(num),
+	}
 }
diff --git a/params/protocol_params.go b/params/protocol_params.go
index 4b53b3320..c8b6609af 100644
--- a/params/protocol_params.go
+++ b/params/protocol_params.go
@@ -32,15 +32,26 @@ const (
 	TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions.
 	TxDataZeroGas         uint64 = 4     // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions.
 	QuadCoeffDiv          uint64 = 512   // Divisor for the quadratic particle of the memory cost equation.
-	SstoreSetGas          uint64 = 20000 // Once per SLOAD operation.
 	LogDataGas            uint64 = 8     // Per byte in a LOG* operation's data.
 	CallStipend           uint64 = 2300  // Free gas given at beginning of call.
 
-	Sha3Gas          uint64 = 30    // Once per SHA3 operation.
-	Sha3WordGas      uint64 = 6     // Once per word of the SHA3 operation's data.
-	SstoreResetGas   uint64 = 5000  // Once per SSTORE operation if the zeroness changes from zero.
-	SstoreClearGas   uint64 = 5000  // Once per SSTORE operation if the zeroness doesn't change.
-	SstoreRefundGas  uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.
+	Sha3Gas     uint64 = 30 // Once per SHA3 operation.
+	Sha3WordGas uint64 = 6  // Once per word of the SHA3 operation's data.
+
+	SstoreSetGas    uint64 = 20000 // Once per SLOAD operation.
+	SstoreResetGas  uint64 = 5000  // Once per SSTORE operation if the zeroness changes from zero.
+	SstoreClearGas  uint64 = 5000  // Once per SSTORE operation if the zeroness doesn't change.
+	SstoreRefundGas uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.
+
+	NetSstoreNoopGas  uint64 = 200   // Once per SSTORE operation if the value doesn't change.
+	NetSstoreInitGas  uint64 = 20000 // Once per SSTORE operation from clean zero.
+	NetSstoreCleanGas uint64 = 5000  // Once per SSTORE operation from clean non-zero.
+	NetSstoreDirtyGas uint64 = 200   // Once per SSTORE operation from dirty.
+
+	NetSstoreClearRefund      uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot
+	NetSstoreResetRefund      uint64 = 4800  // Once per SSTORE operation for resetting to the original non-zero value
+	NetSstoreResetClearRefund uint64 = 19800 // Once per SSTORE operation for resetting to the original zero value
+
 	JumpdestGas      uint64 = 1     // Refunded gas, once per SSTORE operation if the zeroness changes to zero.
 	EpochDuration    uint64 = 30000 // Duration between proof-of-work epochs.
 	CallGas          uint64 = 40    // Once per CALL operation & message call transaction.