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htlcswitch+routing: add funding blob to PaymentBandwidth

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For certain auxiliary bandwidth checks we need to know the funding blob
that was present when the channel was created.
This commit is contained in:
Oliver Gugger
2025-04-22 21:21:11 +02:00
parent 987302923d
commit 56d2381f51
3 changed files with 14 additions and 12 deletions
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12
htlcswitch/interfaces.go
View File

@@ -512,11 +512,13 @@ type AuxTrafficShaper interface {
fundingBlob, htlcBlob fn.Option[tlv.Blob]) (bool, error)
// PaymentBandwidth returns the available bandwidth for a custom channel
// decided by the given channel aux blob and HTLC blob. A return value
// of 0 means there is no bandwidth available. To find out if a channel
// is a custom channel that should be handled by the traffic shaper, the
// ShouldHandleTraffic method should be called first.
PaymentBandwidth(htlcBlob, commitmentBlob fn.Option[tlv.Blob],
// decided by the given channel funding/commitment aux blob and HTLC
// blob. A return value of 0 means there is no bandwidth available. To
// find out if a channel is a custom channel that should be handled by
// the traffic shaper, the ShouldHandleTraffic method should be called
// first.
PaymentBandwidth(fundingBlob, htlcBlob,
commitmentBlob fn.Option[tlv.Blob],
linkBandwidth, htlcAmt lnwire.MilliSatoshi,
htlcView lnwallet.AuxHtlcView) (lnwire.MilliSatoshi, error)

2
htlcswitch/link.go
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@@ -3504,7 +3504,7 @@ func (l *channelLink) AuxBandwidth(amount lnwire.MilliSatoshi,
// Ask for a specific bandwidth to be used for the channel.
commitmentBlob := l.CommitmentCustomBlob()
auxBandwidth, err := ts.PaymentBandwidth(
htlcBlob, commitmentBlob, l.Bandwidth(), amount,
fundingBlob, htlcBlob, commitmentBlob, l.Bandwidth(), amount,
l.channel.FetchLatestAuxHTLCView(),
)
if err != nil {

12
routing/bandwidth_test.go
View File

@@ -145,12 +145,12 @@ func (*mockTrafficShaper) ShouldHandleTraffic(_ lnwire.ShortChannelID,
return true, nil
}
// PaymentBandwidth returns the available bandwidth for a custom channel
// decided by the given channel aux blob and HTLC blob. A return value
// of 0 means there is no bandwidth available. To find out if a channel
// is a custom channel that should be handled by the traffic shaper, the
// HandleTraffic method should be called first.
func (*mockTrafficShaper) PaymentBandwidth(_, _ fn.Option[tlv.Blob],
// PaymentBandwidth returns the available bandwidth for a custom channel decided
// by the given channel funding/commitment aux blob and HTLC blob. A return
// value of 0 means there is no bandwidth available. To find out if a channel is
// a custom channel that should be handled by the traffic shaper, the
// ShouldHandleTraffic method should be called first.
func (*mockTrafficShaper) PaymentBandwidth(_, _, _ fn.Option[tlv.Blob],
linkBandwidth, _ lnwire.MilliSatoshi,
_ lnwallet.AuxHtlcView) (lnwire.MilliSatoshi, error) {