route: report usage data when using a free list

diff --git a/src/route.c b/src/route.c
index c6f42e63013c98fd9874b16f929f397d10e4375c..dbe2b5a51f9395b174a1ff9d5dad1b4563c84c31 100644 (file)
--- a/src/route.c
+++ b/src/route.c
@@ -61,6 +61,11 @@
         (N) = (S))
 #endif
 
+#ifdef RT_FREE_ROUTE_TABLE
+static size_t nroutes;
+static size_t froutes;
+#endif
+
 /*
  * On some systems, host routes have no need for a netmask.
  * However DHCP specifies host routes using an all-ones netmask.
@@ -253,6 +258,8 @@ rt_dispose(struct dhcpcd_ctx *ctx)
        rt_headfree(&ctx->routes);
 #ifdef RT_FREE_ROUTE_TABLE
        rt_headfree(&ctx->froutes);
+       logdebugx("free route list used %zu times", froutes);
+       logdebugx("new routes from free list %zu", nroutes);
 #endif
 }
 
@@ -263,9 +270,10 @@ rt_new0(struct dhcpcd_ctx *ctx)
 
        assert(ctx != NULL);
 #ifdef RT_FREE_ROUTE_TABLE
-       if ((rt = RB_TREE_MIN(&ctx->froutes)) != NULL)
+       if ((rt = RB_TREE_MIN(&ctx->froutes)) != NULL) {
                rb_tree_remove_node(&ctx->froutes, rt);
-       else
+               nroutes++;
+       } else
 #endif
        if ((rt = malloc(sizeof(*rt))) == NULL) {
                logerr(__func__);
@@ -311,6 +319,7 @@ rt_free(struct rt *rt)
 
        ctx = rt->rt_ifp->ctx;
        rb_tree_insert_node(&ctx->froutes, rt);
+       froutes++;
 #else
        free(rt);
 #endif