fix: Eth JSON-RPC api: handle messages with gasFeeCap less than baseFee

Bumped from 256 to 32k entries which should be about 6MB of cached
entries given average nonceCacheKey of 200 bytes

chain/messagepool/messagepool.go

@@ -169,13 +169,13 @@ type MessagePool struct {
 
 	sigValCache *lru.TwoQueueCache[string, struct{}]
 
-	nonceCache *lru.Cache[nonceCacheKey, uint64]
+	stateNonceCache *lru.Cache[stateNonceCacheKey, uint64]
 
 	evtTypes [3]journal.EventType
 	journal  journal.Journal
 }
 
-type nonceCacheKey struct {
+type stateNonceCacheKey struct {
 	tsk  types.TipSetKey
 	addr address.Address
 }
@@ -371,7 +371,7 @@ func (ms *msgSet) toSlice() []*types.SignedMessage {
 func New(ctx context.Context, api Provider, ds dtypes.MetadataDS, us stmgr.UpgradeSchedule, netName dtypes.NetworkName, j journal.Journal) (*MessagePool, error) {
 	cache, _ := lru.New2Q[cid.Cid, crypto.Signature](build.BlsSignatureCacheSize)
 	verifcache, _ := lru.New2Q[string, struct{}](build.VerifSigCacheSize)
-	noncecache, _ := lru.New[nonceCacheKey, uint64](256)
+	stateNonceCache, _ := lru.New[stateNonceCacheKey, uint64](32768) // 32k * ~200 bytes = 6MB
 
 	cfg, err := loadConfig(ctx, ds)
 	if err != nil {
@@ -383,26 +383,26 @@ func New(ctx context.Context, api Provider, ds dtypes.MetadataDS, us stmgr.Upgra
 	}
 
 	mp := &MessagePool{
-		ds:             ds,
-		addSema:        make(chan struct{}, 1),
-		closer:         make(chan struct{}),
-		repubTk:        build.Clock.Ticker(RepublishInterval),
-		repubTrigger:   make(chan struct{}, 1),
-		localAddrs:     make(map[address.Address]struct{}),
-		pending:        make(map[address.Address]*msgSet),
-		keyCache:       make(map[address.Address]address.Address),
-		minGasPrice:    types.NewInt(0),
-		getNtwkVersion: us.GetNtwkVersion,
-		pruneTrigger:   make(chan struct{}, 1),
-		pruneCooldown:  make(chan struct{}, 1),
-		blsSigCache:    cache,
-		sigValCache:    verifcache,
-		nonceCache:     noncecache,
-		changes:        lps.New(50),
-		localMsgs:      namespace.Wrap(ds, datastore.NewKey(localMsgsDs)),
-		api:            api,
-		netName:        netName,
-		cfg:            cfg,
+		ds:              ds,
+		addSema:         make(chan struct{}, 1),
+		closer:          make(chan struct{}),
+		repubTk:         build.Clock.Ticker(RepublishInterval),
+		repubTrigger:    make(chan struct{}, 1),
+		localAddrs:      make(map[address.Address]struct{}),
+		pending:         make(map[address.Address]*msgSet),
+		keyCache:        make(map[address.Address]address.Address),
+		minGasPrice:     types.NewInt(0),
+		getNtwkVersion:  us.GetNtwkVersion,
+		pruneTrigger:    make(chan struct{}, 1),
+		pruneCooldown:   make(chan struct{}, 1),
+		blsSigCache:     cache,
+		sigValCache:     verifcache,
+		stateNonceCache: stateNonceCache,
+		changes:         lps.New(50),
+		localMsgs:       namespace.Wrap(ds, datastore.NewKey(localMsgsDs)),
+		api:             api,
+		netName:         netName,
+		cfg:             cfg,
 		evtTypes: [...]journal.EventType{
 			evtTypeMpoolAdd:    j.RegisterEventType("mpool", "add"),
 			evtTypeMpoolRemove: j.RegisterEventType("mpool", "remove"),
@@ -1046,24 +1046,52 @@ func (mp *MessagePool) getStateNonce(ctx context.Context, addr address.Address,
 	done := metrics.Timer(ctx, metrics.MpoolGetNonceDuration)
 	defer done()
 
-	nk := nonceCacheKey{
+	nk := stateNonceCacheKey{
 		tsk:  ts.Key(),
 		addr: addr,
 	}
 
-	n, ok := mp.nonceCache.Get(nk)
+	n, ok := mp.stateNonceCache.Get(nk)
 	if ok {
 		return n, nil
 	}
 
-	act, err := mp.api.GetActorAfter(addr, ts)
+	// get the nonce from the actor before ts
+	actor, err := mp.api.GetActorBefore(addr, ts)
+	if err != nil {
+		return 0, err
+	}
+	nextNonce := actor.Nonce
+
+	raddr, err := mp.resolveToKey(ctx, addr)
 	if err != nil {
 		return 0, err
 	}
 
-	mp.nonceCache.Add(nk, act.Nonce)
+	// loop over all messages sent by 'addr' and find the highest nonce
+	messages, err := mp.api.MessagesForTipset(ctx, ts)
+	if err != nil {
+		return 0, err
+	}
+	for _, message := range messages {
+		msg := message.VMMessage()
 
-	return act.Nonce, nil
+		maddr, err := mp.resolveToKey(ctx, msg.From)
+		if err != nil {
+			log.Warnf("failed to resolve message from address: %s", err)
+			continue
+		}
+
+		if maddr == raddr {
+			if n := msg.Nonce + 1; n > nextNonce {
+				nextNonce = n
+			}
+		}
+	}
+
+	mp.stateNonceCache.Add(nk, nextNonce)
+
+	return nextNonce, nil
 }
 
 func (mp *MessagePool) getStateBalance(ctx context.Context, addr address.Address, ts *types.TipSet) (types.BigInt, error) {

chain/messagepool/messagepool_test.go

@@ -120,6 +120,22 @@ func (tma *testMpoolAPI) PubSubPublish(string, []byte) error {
 	return nil
 }
 
+func (tma *testMpoolAPI) GetActorBefore(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
+	balance, ok := tma.balance[addr]
+	if !ok {
+		balance = types.NewInt(1000e6)
+		tma.balance[addr] = balance
+	}
+
+	nonce := tma.statenonce[addr]
+
+	return &types.Actor{
+		Code:    builtin2.AccountActorCodeID,
+		Nonce:   nonce,
+		Balance: balance,
+	}, nil
+}
+
 func (tma *testMpoolAPI) GetActorAfter(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
 	// regression check for load bug
 	if ts == nil {

chain/messagepool/provider.go

@@ -2,6 +2,7 @@ package messagepool
 
 import (
 	"context"
+	"errors"
 	"time"
 
 	"github.com/ipfs/go-cid"
@@ -27,6 +28,7 @@ type Provider interface {
 	SubscribeHeadChanges(func(rev, app []*types.TipSet) error) *types.TipSet
 	PutMessage(ctx context.Context, m types.ChainMsg) (cid.Cid, error)
 	PubSubPublish(string, []byte) error
+	GetActorBefore(address.Address, *types.TipSet) (*types.Actor, error)
 	GetActorAfter(address.Address, *types.TipSet) (*types.Actor, error)
 	StateDeterministicAddressAtFinality(context.Context, address.Address, *types.TipSet) (address.Address, error)
 	StateNetworkVersion(context.Context, abi.ChainEpoch) network.Version
@@ -58,6 +60,23 @@ func (mpp *mpoolProvider) IsLite() bool {
 	return mpp.lite != nil
 }
 
+func (mpp *mpoolProvider) getActorLite(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
+	if !mpp.IsLite() {
+		return nil, errors.New("should not use getActorLite on non lite Provider")
+	}
+
+	n, err := mpp.lite.GetNonce(context.TODO(), addr, ts.Key())
+	if err != nil {
+		return nil, xerrors.Errorf("getting nonce over lite: %w", err)
+	}
+	a, err := mpp.lite.GetActor(context.TODO(), addr, ts.Key())
+	if err != nil {
+		return nil, xerrors.Errorf("getting actor over lite: %w", err)
+	}
+	a.Nonce = n
+	return a, nil
+}
+
 func (mpp *mpoolProvider) SubscribeHeadChanges(cb func(rev, app []*types.TipSet) error) *types.TipSet {
 	mpp.sm.ChainStore().SubscribeHeadChanges(
 		store.WrapHeadChangeCoalescer(
@@ -77,18 +96,17 @@ func (mpp *mpoolProvider) PubSubPublish(k string, v []byte) error {
 	return mpp.ps.Publish(k, v) // nolint
 }
 
+func (mpp *mpoolProvider) GetActorBefore(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
+	if mpp.IsLite() {
+		return mpp.getActorLite(addr, ts)
+	}
+
+	return mpp.sm.LoadActor(context.TODO(), addr, ts)
+}
+
 func (mpp *mpoolProvider) GetActorAfter(addr address.Address, ts *types.TipSet) (*types.Actor, error) {
 	if mpp.IsLite() {
-		n, err := mpp.lite.GetNonce(context.TODO(), addr, ts.Key())
-		if err != nil {
-			return nil, xerrors.Errorf("getting nonce over lite: %w", err)
-		}
-		a, err := mpp.lite.GetActor(context.TODO(), addr, ts.Key())
-		if err != nil {
-			return nil, xerrors.Errorf("getting actor over lite: %w", err)
-		}
-		a.Nonce = n
-		return a, nil
+		return mpp.getActorLite(addr, ts)
 	}
 
 	stcid, _, err := mpp.sm.TipSetState(context.TODO(), ts)

chain/types/message.go

@@ -220,12 +220,17 @@ func (m *Message) ValidForBlockInclusion(minGas int64, version network.Version)
 }
 
 // EffectiveGasPremium returns the effective gas premium claimable by the miner
-// given the supplied base fee.
+// given the supplied base fee. This method is not used anywhere except the Eth API.
 //
 // Filecoin clamps the gas premium at GasFeeCap - BaseFee, if lower than the
-// specified premium.
+// specified premium. Returns 0 if GasFeeCap is less than BaseFee.
 func (m *Message) EffectiveGasPremium(baseFee abi.TokenAmount) abi.TokenAmount {
 	available := big.Sub(m.GasFeeCap, baseFee)
+	// It's possible that storage providers may include messages with gasFeeCap less than the baseFee
+	// In such cases, their reward should be viewed as zero
+	if available.LessThan(big.NewInt(0)) {
+		available = big.NewInt(0)
+	}
 	if big.Cmp(m.GasPremium, available) <= 0 {
 		return m.GasPremium
 	}

node/impl/full/eth_test.go

@@ -114,7 +114,7 @@ func TestReward(t *testing.T) {
 		{maxFeePerGas: big.NewInt(600), maxPriorityFeePerGas: big.NewInt(500), answer: big.NewInt(500)},
 		{maxFeePerGas: big.NewInt(600), maxPriorityFeePerGas: big.NewInt(600), answer: big.NewInt(500)},
 		{maxFeePerGas: big.NewInt(600), maxPriorityFeePerGas: big.NewInt(1000), answer: big.NewInt(500)},
-		{maxFeePerGas: big.NewInt(50), maxPriorityFeePerGas: big.NewInt(200), answer: big.NewInt(-50)},
+		{maxFeePerGas: big.NewInt(50), maxPriorityFeePerGas: big.NewInt(200), answer: big.NewInt(0)},
 	}
 	for _, tc := range testcases {
 		msg := &types.Message{GasFeeCap: tc.maxFeePerGas, GasPremium: tc.maxPriorityFeePerGas}