common/dijkstra: hand channel direction to path_score callback.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
rustyrussell · Sep 8, 2021 · 171d463 · 171d463
1 parent 6b8d3a0
commit 171d463
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Showing 5 changed files with 8 additions and 1 deletion.
diff --git a/common/dijkstra.c b/common/dijkstra.c
@@ -144,6 +144,7 @@ dijkstra_(const tal_t *ctx,
 	  u64 (*path_score)(u32 distance,
 			    struct amount_msat cost,
 			    struct amount_msat risk,
+			    int dir,
 			    const struct gossmap_chan *c),
 	  void *arg)
 {
@@ -251,7 +252,7 @@ dijkstra_(const tal_t *ctx,
 			risk = risk_price(cost, riskfactor,
 					  cur_d->total_delay
 					  + c->half[!which_half].delay);
-			score = path_score(cur_d->distance + 1, cost, risk, c);
+			score = path_score(cur_d->distance + 1, cost, risk, !which_half, c);
 			if (score >= d->score)
 				continue;
 

diff --git a/common/dijkstra.h b/common/dijkstra.h
@@ -24,6 +24,7 @@ dijkstra_(const tal_t *ctx,
 	  u64 (*path_score)(u32 distance,
 			    struct amount_msat cost,
 			    struct amount_msat risk,
+			    int dir,
 			    const struct gossmap_chan *c),
 	  void *arg);
 

diff --git a/common/route.c b/common/route.c
@@ -52,6 +52,7 @@ static u32 costs_to_score(struct amount_msat cost,
 u64 route_score_shorter(u32 distance,
 			struct amount_msat cost,
 			struct amount_msat risk,
+			int dir UNUSED,
 			const struct gossmap_chan *c UNUSED)
 {
 	return costs_to_score(cost, risk) + ((u64)distance << 32);
@@ -61,6 +62,7 @@ u64 route_score_shorter(u32 distance,
 u64 route_score_cheaper(u32 distance,
 			struct amount_msat cost,
 			struct amount_msat risk,
+			int dir UNUSED,
 			const struct gossmap_chan *c UNUSED)
 {
 	return ((u64)costs_to_score(cost, risk) << 32) + distance;

diff --git a/common/route.h b/common/route.h
@@ -57,12 +57,14 @@ bool route_can_carry_even_disabled(const struct gossmap *map,
 u64 route_score_shorter(u32 distance,
 			struct amount_msat cost,
 			struct amount_msat risk,
+			int dir UNUSED,
 			const struct gossmap_chan *c UNUSED);
 
 /* Cheapest path, with shorter path tiebreak */
 u64 route_score_cheaper(u32 distance,
 			struct amount_msat cost,
 			struct amount_msat risk,
+			int dir UNUSED,
 			const struct gossmap_chan *c UNUSED);
 
 /* Extract route tal_arr from completed dijkstra: NULL if none. */

diff --git a/plugins/topology.c b/plugins/topology.c
@@ -52,6 +52,7 @@ struct exclude_entry {
 static u64 route_score_fuzz(u32 distance,
 			    struct amount_msat cost,
 			    struct amount_msat risk,
+			    int dir UNUSED,
 			    const struct gossmap_chan *c)
 {
 	u64 costs = cost.millisatoshis + risk.millisatoshis; /* Raw: score */