From 43d036f5873e4c84e49ddc51353b885593178d93 Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sun, 23 Nov 2014 08:36:34 -0600
Subject: [PATCH] Network routing: Refuse to perform routing table lookups for
the Broadcast IP address. From Brennan Ashton
---
net/arp/arp_out.c | 1 +
net/route/net_router.c | 8 ++++++++
2 files changed, 9 insertions(+)
diff --git a/net/arp/arp_out.c b/net/arp/arp_out.c
index 7e77bfc4ae..6b5b038c78 100644
--- a/net/arp/arp_out.c
+++ b/net/arp/arp_out.c
@@ -49,6 +49,7 @@
#include <nuttx/net/netdev.h>
#include <nuttx/net/arp.h>
+#include "route/route.h"
#include "arp/arp.h"
#ifdef CONFIG_NET_ARP
diff --git a/net/route/net_router.c b/net/route/net_router.c
index 86c37b457e..1755b0209a 100644
--- a/net/route/net_router.c
+++ b/net/route/net_router.c
@@ -45,6 +45,7 @@
#include <nuttx/net/ip.h>
+#include "devif/devif.h"
#include "route/route.h"
#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE)
@@ -131,6 +132,13 @@ int net_router(net_ipaddr_t target, FAR net_ipaddr_t *router)
struct route_match_s match;
int ret;
+ /* Do not route the special broadcast IP address */
+
+ if (net_ipaddr_cmp(target, g_alloneaddr))
+ {
+ return -ENOENT;
+ }
+
/* Set up the comparison structure */
memset(&match, 0, sizeof(struct route_match_s));
--
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