askrene.c was getting quite long, and this is self-contained.
The only code change is a convenience accessor for the per-htlc-cost
hash table.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
"spendable" is for a single HTLC: if we own the channel, this amount
decreases with every HTLC, as we have to pay fees. We have access to this since
we call listpeerchannels anyway, so we can calculate the additional costs and
use it in the refining phase.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This populates information on both topology (i.e. unannounced channels) and capacity for the local node using `listpeerchannels`.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We don't know anything about most channels, so we create an array of
fp16_t containing them. We zero out ones where we do know something,
and use the previous code as the slow path.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We apply all the gossmods for the layers they specified, and create a
naive routine to give the capacity of a channel given those layers.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
They tell us what paths they're using, so we can adjust capacity estimates
accordingly.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Header from folded patch 'reserve-fixup.patch':
fixup! askrene: reservation implementation.
These are the repositories of all information.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Header from folded patch 'layers-fixup.patch':
fixup! askrene: add layers infrastructure.
