From 4d7d13867dca6dcd179a71abf9f71720dcae1541 Mon Sep 17 00:00:00 2001
From: chenjiasheng <jiasheng.chen@xiaoxitech.com>
Date: Fri, 25 Nov 2022 17:10:18 +0800
Subject: [PATCH] routing: fix support for default gateway

see: https://github.com/OpenFastPath/ofp/pull/272
---
 src/ofp_rt_mtrie_lookup.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ofp_rt_mtrie_lookup.c b/src/ofp_rt_mtrie_lookup.c
index fec270b0..e51d03fe 100644
--- a/src/ofp_rt_mtrie_lookup.c
+++ b/src/ofp_rt_mtrie_lookup.c
@@ -587,11 +587,15 @@ ofp_rtl_remove(struct ofp_rtl_tree *tree, uint32_t addr_be, uint32_t masklen)
 
 struct ofp_nh_entry *ofp_rtl_search(struct ofp_rtl_tree *tree, uint32_t addr_be)
 {
-	struct ofp_nh_entry *nh = NULL;
 	struct ofp_rtl_node *elem, *node = tree->root;
+    struct ofp_nh_entry *nh = &node->data[0];
 	uint32_t addr = odp_be_to_cpu_32(addr_be);
 	uint32_t low = 0, high = IPV4_FIRST_LEVEL;
 
+    if (!(nh->flags & OFP_RTL_FLAGS_GATEWAY)) {
+        nh = NULL;
+    }
+
 	for (; high <= IPV4_LENGTH ; low = high, high += IPV4_LEVEL) {
 		elem = find_node(node, addr, low, high);