chaintopology: add delayed_to_us, htlc, and penalty feerates

lightningd/chaintopology.c

@@ -458,6 +458,21 @@ u32 unilateral_feerate(struct chain_topology *topo)
 	return try_get_feerate(topo, FEERATE_URGENT);
 }
 
+u32 delayed_to_us_feerate(struct chain_topology *topo)
+{
+	return try_get_feerate(topo, FEERATE_NORMAL);
+}
+
+u32 htlc_resolution_feerate(struct chain_topology *topo)
+{
+	return try_get_feerate(topo, FEERATE_NORMAL);
+}
+
+u32 penalty_feerate(struct chain_topology *topo)
+{
+	return try_get_feerate(topo, FEERATE_NORMAL);
+}
+
 u32 feerate_from_style(u32 feerate, enum feerate_style style)
 {
 	switch (style) {

lightningd/chaintopology.h

@@ -146,9 +146,13 @@ u32 try_get_feerate(const struct chain_topology *topo, enum feerate feerate);
 u32 feerate_min(struct lightningd *ld, bool *unknown);
 u32 feerate_max(struct lightningd *ld, bool *unknown);
 
-u32 mutual_close_feerate(struct chain_topology *topo);
 u32 opening_feerate(struct chain_topology *topo);
+u32 mutual_close_feerate(struct chain_topology *topo);
 u32 unilateral_feerate(struct chain_topology *topo);
+/* For onchain resolution. */
+u32 delayed_to_us_feerate(struct chain_topology *topo);
+u32 htlc_resolution_feerate(struct chain_topology *topo);
+u32 penalty_feerate(struct chain_topology *topo);
 
 /* We always use feerate-per-ksipa, ie. perkw */
 u32 feerate_from_style(u32 feerate, enum feerate_style style);

lightningd/onchain_control.c

@@ -457,7 +457,7 @@ enum watch_result onchaind_funding_spent(struct channel *channel,
 	struct lightningd *ld = channel->peer->ld;
 	struct pubkey final_key;
 	int hsmfd;
-	u32 feerate;
+	u32 feerates[3];
 
 	channel_fail_permanent(channel, "Funding transaction spent");
 
@@ -502,12 +502,19 @@ enum watch_result onchaind_funding_spent(struct channel *channel,
 	bitcoin_txid(tx, &txid);
 	bitcoin_txid(channel->last_tx, &our_last_txid);
 
-	/* We try to use normal feerate for onchaind spends. */
-	feerate = try_get_feerate(ld->topology, FEERATE_NORMAL);
-	if (!feerate) {
+	/* We try to get the feerate for each transaction type, 0 if estimation
+	 * failed. */
+	feerates[0] = delayed_to_us_feerate(ld->topology);
+	feerates[1] = htlc_resolution_feerate(ld->topology);
+	feerates[2] = penalty_feerate(ld->topology);
+	/* We check them separately but there is a high chance that if estimation
+	 * failed for one, it failed for all.. */
+	for (size_t i = 0; i < 3; i++) {
+		if (!feerates[i]) {
 			/* We have at least one data point: the last tx's feerate. */
 			struct amount_sat fee = channel->funding;
-		for (size_t i = 0; i < channel->last_tx->wtx->num_outputs; i++) {
+			for (size_t i = 0;
+			     i < channel->last_tx->wtx->num_outputs; i++) {
 				struct amount_asset asset =
 					bitcoin_tx_output_get_amount(channel->last_tx, i);
 				struct amount_sat amt;
@@ -526,9 +533,10 @@ enum watch_result onchaind_funding_spent(struct channel *channel,
 				}
 			}
 
-		feerate = fee.satoshis / bitcoin_tx_weight(tx); /* Raw: reverse feerate extraction */
-		if (feerate < feerate_floor())
-			feerate = feerate_floor();
+			feerates[i] = fee.satoshis / bitcoin_tx_weight(tx); /* Raw: reverse feerate extraction */
+			if (feerates[i] < feerate_floor())
+				feerates[i] = feerate_floor();
+		}
 	}
 
 	msg = towire_onchain_init(channel,
@@ -545,7 +553,8 @@ enum watch_result onchaind_funding_spent(struct channel *channel,
 				    * we specify theirs. */
 				  channel->channel_info.their_config.to_self_delay,
 				  channel->our_config.to_self_delay,
-				  feerate, feerate, feerate,
+				  /* delayed_to_us, htlc, and penalty. */
+				  feerates[0], feerates[1], feerates[2],
 				  channel->our_config.dust_limit,
 				  &our_last_txid,
 				  channel->shutdown_scriptpubkey[LOCAL],