From ea0eec9d3004078b1bdb2b03ee7b0f65a1bdde91 Mon Sep 17 00:00:00 2001
From: Cong Wang <xiyou.wangcong@gmail.com>
Date: Tue, 3 Dec 2013 20:16:11 -0800
Subject: [PATCH] add an assertion in rtnl_tc_set_link()

So that we can catch the bug easily.

Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
---
 lib/route/tc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/route/tc.c b/lib/route/tc.c
index fbc5c7ea8..0886e8e49 100644
--- a/lib/route/tc.c
+++ b/lib/route/tc.c
@@ -300,6 +300,8 @@ void rtnl_tc_set_link(struct rtnl_tc *tc, struct rtnl_link *link)
 
 	if (!link)
 		return;
+	if (!link->l_index)
+		BUG();
 
 	nl_object_get(OBJ_CAST(link));
 	tc->tc_link = link;