gossip: Pass routing_state to the gossip_store

We'll need it later to annotate the raw gossip messages, e.g., the capacity of a
channel.

Signed-off-by: Christian Decker <decker.christian@gmail.com>

gossipd/gossip_store.c

@@ -28,6 +28,9 @@ struct gossip_store {
 	 * gossip_store */
 	struct broadcast_state *broadcast;
 
+	/* Handle to the routing_state to retrieve additional information,
+	 * should it be needed */
+	struct routing_state *rstate;
 };
 
 static void gossip_store_destroy(struct gossip_store *gs)
@@ -36,12 +39,14 @@ static void gossip_store_destroy(struct gossip_store *gs)
 }
 
 struct gossip_store *gossip_store_new(const tal_t *ctx,
+				      struct routing_state *rstate,
 				      struct broadcast_state *broadcast)
 {
 	struct gossip_store *gs = tal(ctx, struct gossip_store);
 	gs->count = 0;
 	gs->fd = open(GOSSIP_STORE_FILENAME, O_RDWR|O_APPEND|O_CREAT, 0600);
 	gs->broadcast = broadcast;
+	gs->rstate = rstate;
 
 	tal_add_destructor(gs, gossip_store_destroy);
 

gossipd/gossip_store.h

@@ -15,6 +15,7 @@ struct gossip_store;
 struct routing_state;
 
 struct gossip_store *gossip_store_new(const tal_t *ctx,
+				      struct routing_state *rstate,
 				      struct broadcast_state *broadcast);
 
 /**

gossipd/routing.c

@@ -96,7 +96,7 @@ struct routing_state *new_routing_state(const tal_t *ctx,
 	rstate->chain_hash = *chain_hash;
 	rstate->local_id = *local_id;
 	rstate->prune_timeout = prune_timeout;
-	rstate->store = gossip_store_new(rstate, rstate->broadcasts);
+	rstate->store = gossip_store_new(rstate, rstate, rstate->broadcasts);
 	rstate->dev_allow_localhost = dev_allow_localhost;
 	rstate->local_channel_announced = false;
 	list_head_init(&rstate->pending_cannouncement);