X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;f=src%2Fgraph.c;h=d432023e496f4eb790804d545262a91ddfc07034;hb=86c2990327fdf7ec1197aa73cb2b9a926a734db4;hp=bb55dfdcba1c821d25fcf1f27e4c81fc5478fb7f;hpb=79e9a4f743b7b59fed968575f6b36171cf4a0063;p=tinc

diff --git a/src/graph.c b/src/graph.c
index bb55dfdc..d432023e 100644
--- a/src/graph.c
+++ b/src/graph.c
@@ -1,6 +1,6 @@
 /*
     graph.c -- graph algorithms
-    Copyright (C) 2001-2011 Guus Sliepen <guus@tinc-vpn.org>,
+    Copyright (C) 2001-2012 Guus Sliepen <guus@tinc-vpn.org>,
                   2001-2005 Ivo Timmermans
 
     This program is free software; you can redistribute it and/or modify
@@ -65,7 +65,7 @@
    Please note that sorting on weight is already done by add_edge().
 */
 
-void mst_kruskal(void) {
+static void mst_kruskal(void) {
 	splay_node_t *node, *next;
 	edge_t *e;
 	node_t *n;
@@ -78,7 +78,7 @@ void mst_kruskal(void) {
 		c->status.mst = false;
 	}
 
-	ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Running Kruskal's algorithm:");
+	logger(DEBUG_SCARY_THINGS, LOG_DEBUG, "Running Kruskal's algorithm:");
 
 	/* Clear visited status on nodes */
 
@@ -105,7 +105,7 @@ void mst_kruskal(void) {
 		if(e->reverse->connection)
 			e->reverse->connection->status.mst = true;
 
-		ifdebug(SCARY_THINGS) logger(LOG_DEBUG, " Adding edge %s - %s weight %d", e->from->name,
+		logger(DEBUG_SCARY_THINGS, LOG_DEBUG, " Adding edge %s - %s weight %d", e->from->name,
 				   e->to->name, e->weight);
 	}
 }
@@ -124,7 +124,7 @@ static void sssp_dijkstra(void) {
 
 	todo_list = list_alloc(NULL);
 
-	ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Running Dijkstra's algorithm:");
+	logger(DEBUG_SCARY_THINGS, LOG_DEBUG, "Running Dijkstra's algorithm:");
 
 	/* Clear visited status on nodes */
 
@@ -204,7 +204,7 @@ static void sssp_dijkstra(void) {
 			if(e->to->address.sa.sa_family == AF_UNSPEC && e->address.sa.sa_family != AF_UNKNOWN)
 				update_node_udp(e->to, &e->address);
 
-			ifdebug(SCARY_THINGS) logger(LOG_DEBUG, " Updating edge %s - %s weight %d distance %d", e->from->name,
+			logger(DEBUG_SCARY_THINGS, LOG_DEBUG, " Updating edge %s - %s weight %d distance %d", e->from->name,
 					   e->to->name, e->weight, e->to->distance);
 		}
 	}
@@ -216,7 +216,7 @@ static void sssp_dijkstra(void) {
    Running time: O(E)
 */
 
-void sssp_bfs(void) {
+static void sssp_bfs(void) {
 	splay_node_t *node, *to;
 	edge_t *e;
 	node_t *n;
@@ -239,6 +239,7 @@ void sssp_bfs(void) {
 	myself->status.visited = true;
 	myself->status.indirect = false;
 	myself->nexthop = myself;
+	myself->prevedge = NULL;
 	myself->via = myself;
 	list_insert_head(todo_list, myself);
 
@@ -279,6 +280,7 @@ void sssp_bfs(void) {
 			e->to->status.visited = true;
 			e->to->status.indirect = indirect;
 			e->to->nexthop = (n->nexthop == myself) ? e->to : n->nexthop;
+			e->to->prevedge = e;
 			e->to->via = indirect ? n->via : e->to;
 			e->to->options = e->options;
 
@@ -313,10 +315,10 @@ static void check_reachability(void) {
 			n->status.reachable = !n->status.reachable;
 
 			if(n->status.reachable) {
-				ifdebug(TRAFFIC) logger(LOG_DEBUG, "Node %s (%s) became reachable",
+				logger(DEBUG_TRAFFIC, LOG_DEBUG, "Node %s (%s) became reachable",
 					   n->name, n->hostname);
 			} else {
-				ifdebug(TRAFFIC) logger(LOG_DEBUG, "Node %s (%s) became unreachable",
+				logger(DEBUG_TRAFFIC, LOG_DEBUG, "Node %s (%s) became unreachable",
 					   n->name, n->hostname);
 			}
 
@@ -367,7 +369,7 @@ static void check_reachability(void) {
 
 void graph(void) {
 	subnet_cache_flush();
-	sssp_dijkstra();
+	sssp_bfs();
 	check_reachability();
 	mst_kruskal();
 }