core/txpool: move setcode tx validation into legacyPool

core/txpool/errors.go

@@ -38,6 +38,10 @@ var (
 	// allowed by a pool for a single account.
 	ErrAccountLimitExceeded = errors.New("account limit exceeded")
 
+	// ErrInflightTxLimitReached is returned when the maximum number of in-flight
+	// transactions is reached for specific accounts.
+	ErrInflightTxLimitReached = errors.New("in-flight transaction limit reached for delegated accounts")
+
 	// ErrGasLimit is returned if a transaction's requested gas limit exceeds the
 	// maximum allowance of the current block.
 	ErrGasLimit = errors.New("exceeds block gas limit")
@@ -65,8 +69,4 @@ var (
 	// signed by an address which already has in-flight transactions known to the
 	// pool.
 	ErrAuthorityReserved = errors.New("authority already reserved")
-
-	// ErrAuthorityNonce is returned if a transaction has an authorization with
-	// a nonce that is not currently valid for the authority.
-	ErrAuthorityNonceTooLow = errors.New("authority nonce too low")
 )

core/txpool/legacypool/legacypool.go

@@ -581,11 +581,6 @@ func (pool *LegacyPool) validateTx(tx *types.Transaction) error {
 			if list := pool.queue[addr]; list != nil {
 				have += list.Len()
 			}
-			if pool.currentState.GetCodeHash(addr) != types.EmptyCodeHash || len(pool.all.auths[addr]) != 0 {
-				// Allow at most one in-flight tx for delegated accounts or those with
-				// a pending authorization.
-				return have, max(0, 1-have)
-			}
 			return have, math.MaxInt
 		},
 		ExistingExpenditure: func(addr common.Address) *big.Int {
@@ -602,18 +597,6 @@ func (pool *LegacyPool) validateTx(tx *types.Transaction) error {
 			}
 			return nil
 		},
-		KnownConflicts: func(from common.Address, auths []common.Address) []common.Address {
-			var conflicts []common.Address
-			// Authorities cannot conflict with any pending or queued transactions.
-			for _, addr := range auths {
-				if list := pool.pending[addr]; list != nil {
-					conflicts = append(conflicts, addr)
-				} else if list := pool.queue[addr]; list != nil {
-					conflicts = append(conflicts, addr)
-				}
-			}
-			return conflicts
-		},
 	}
 	if err := txpool.ValidateTransactionWithState(tx, pool.signer, opts); err != nil {
 		return err
@@ -621,6 +604,47 @@ func (pool *LegacyPool) validateTx(tx *types.Transaction) error {
 	return nil
 }
 
+// validateAuth verifies that the transaction complies with code authorization
+// restrictions brought by SetCode transaction type.
+func (pool *LegacyPool) validateAuth(tx *types.Transaction) error {
+	from, _ := types.Sender(pool.signer, tx) // validated
+
+	// Allow at most one in-flight tx for delegated accounts or those with a
+	// pending authorization.
+	if pool.currentState.GetCodeHash(from) != types.EmptyCodeHash || len(pool.all.auths[from]) != 0 {
+		var (
+			count  int
+			exists bool
+		)
+		pending := pool.pending[from]
+		if pending != nil {
+			count += pending.Len()
+			exists = pending.Contains(tx.Nonce())
+		}
+		queue := pool.queue[from]
+		if queue != nil {
+			count += queue.Len()
+			if !exists {
+				exists = queue.Contains(tx.Nonce())
+			}
+		}
+		// Replace the existing inflight transaction for delegated accounts
+		// are still supported
+		if count >= 1 && !exists {
+			return txpool.ErrInflightTxLimitReached
+		}
+	}
+	// Authorities cannot conflict with any pending or queued transactions.
+	if auths := tx.SetCodeAuthorities(); len(auths) > 0 {
+		for _, auth := range auths {
+			if pool.pending[auth] != nil || pool.queue[auth] != nil {
+				return txpool.ErrAuthorityReserved
+			}
+		}
+	}
+	return nil
+}
+
 // add validates a transaction and inserts it into the non-executable queue for later
 // pending promotion and execution. If the transaction is a replacement for an already
 // pending or queued one, it overwrites the previous transaction if its price is higher.
@@ -639,6 +663,11 @@ func (pool *LegacyPool) add(tx *types.Transaction) (replaced bool, err error) {
 		invalidTxMeter.Mark(1)
 		return false, err
 	}
+	if err := pool.validateAuth(tx); err != nil {
+		log.Trace("Discarding invalid transaction", "hash", hash, "err", err)
+		invalidTxMeter.Mark(1)
+		return false, err
+	}
 	// already validated by this point
 	from, _ := types.Sender(pool.signer, tx)
 

core/txpool/legacypool/legacypool_test.go

@@ -2248,12 +2248,12 @@ func TestSetCodeTransactions(t *testing.T) {
 				if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1), keyA)); err != nil {
 					t.Fatalf("%s: failed to add remote transaction: %v", name, err)
 				}
-				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyA)); !errors.Is(err, txpool.ErrAccountLimitExceeded) {
+				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyA)); !errors.Is(err, txpool.ErrInflightTxLimitReached) {
-					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrAccountLimitExceeded, err)
+					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrInflightTxLimitReached, err)
 				}
 				// Also check gapped transaction.
-				if err := pool.addRemoteSync(pricedTransaction(2, 100000, big.NewInt(1), keyA)); !errors.Is(err, txpool.ErrAccountLimitExceeded) {
+				if err := pool.addRemoteSync(pricedTransaction(2, 100000, big.NewInt(1), keyA)); !errors.Is(err, txpool.ErrInflightTxLimitReached) {
-					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrAccountLimitExceeded, err)
+					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrInflightTxLimitReached, err)
 				}
 				// Replace by fee.
 				if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(10), keyA)); err != nil {
@@ -2287,8 +2287,8 @@ func TestSetCodeTransactions(t *testing.T) {
 					t.Fatalf("%s: failed to add with pending delegatio: %v", name, err)
 				}
 				// Also check gapped transaction is rejected.
-				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyC)); !errors.Is(err, txpool.ErrAccountLimitExceeded) {
+				if err := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1), keyC)); !errors.Is(err, txpool.ErrInflightTxLimitReached) {
-					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrAccountLimitExceeded, err)
+					t.Fatalf("%s: error mismatch: want %v, have %v", name, txpool.ErrInflightTxLimitReached, err)
 				}
 			},
 		},
@@ -2363,7 +2363,7 @@ func TestSetCodeTransactions(t *testing.T) {
 				if err := pool.addRemoteSync(pricedTransaction(0, 100000, big.NewInt(1000), keyC)); err != nil {
 					t.Fatalf("%s: failed to added single pooled for account with pending delegation: %v", name, err)
 				}
-				if err, want := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1000), keyC)), txpool.ErrAccountLimitExceeded; !errors.Is(err, want) {
+				if err, want := pool.addRemoteSync(pricedTransaction(1, 100000, big.NewInt(1000), keyC)), txpool.ErrInflightTxLimitReached; !errors.Is(err, want) {
 					t.Fatalf("%s: error mismatch: want %v, have %v", name, want, err)
 				}
 			},

core/txpool/validation.go

@@ -218,11 +218,6 @@ type ValidationOptionsWithState struct {
 	// ExistingCost is a mandatory callback to retrieve an already pooled
 	// transaction's cost with the given nonce to check for overdrafts.
 	ExistingCost func(addr common.Address, nonce uint64) *big.Int
-
-	// KnownConflicts is an optional callback which iterates over the list of
-	// addresses and returns all addresses known to the pool with in-flight
-	// transactions.
-	KnownConflicts func(sender common.Address, authorizers []common.Address) []common.Address
 }
 
 // ValidateTransactionWithState is a helper method to check whether a transaction
@@ -276,14 +271,6 @@ func ValidateTransactionWithState(tx *types.Transaction, signer types.Signer, op
 		if used, left := opts.UsedAndLeftSlots(from); left <= 0 {
 			return fmt.Errorf("%w: pooled %d txs", ErrAccountLimitExceeded, used)
 		}
-
-		// Verify no authorizations will invalidate existing transactions known to
-		// the pool.
-		if opts.KnownConflicts != nil {
-			if conflicts := opts.KnownConflicts(from, tx.SetCodeAuthorities()); len(conflicts) > 0 {
-				return fmt.Errorf("%w: authorization conflicts with other known tx", ErrAuthorityReserved)
-			}
-		}
 	}
 	return nil
 }