[patch] 0002-batman-adv-check-for-more-types-of-invalid-IP-addres.patch

0002-batman-adv-check-for-more-types-of-invalid-IP-addres.patch (text/plain), 1.41 KB, created by Antonio Quartulli on 2013-02-16 13:21:19 UTC

From 3b24193d7cfc18f0cc005811ca4aab3479c2f1c6 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <[e-mail]>
Date: Thu, 24 Jan 2013 18:18:26 +0100
Subject: [PATCH 2/4] batman-adv: check for more types of invalid IP addresses
 in DAT

There are more types of IP addresses that may appear in ARP packets that we
don't want to process. While some of these should never appear in sane ARP
packets, a 0.0.0.0 source is used for duplicate address detection and thus seen
quite often.

Signed-off-by: Matthias Schiffer <[e-mail]>
Acked-by: Antonio Quartulli <[e-mail]>
Signed-off-by: Marek Lindner <[e-mail]>
---
 distributed-arp-table.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/distributed-arp-table.c b/distributed-arp-table.c
index 9f4cff3..be3be28 100644
--- a/distributed-arp-table.c
+++ b/distributed-arp-table.c
@@ -777,7 +777,9 @@ static uint16_t batadv_arp_get_type(struct batadv_priv *bat_priv,
 	ip_src = batadv_arp_ip_src(skb, hdr_size);
 	ip_dst = batadv_arp_ip_dst(skb, hdr_size);
 	if (ipv4_is_loopback(ip_src) || ipv4_is_multicast(ip_src) ||
-	    ipv4_is_loopback(ip_dst) || ipv4_is_multicast(ip_dst))
+	    ipv4_is_loopback(ip_dst) || ipv4_is_multicast(ip_dst) ||
+	    ipv4_is_zeronet(ip_src) || ipv4_is_lbcast(ip_src) ||
+	    ipv4_is_zeronet(ip_dst) || ipv4_is_lbcast(ip_dst))
 		goto out;
 
 	type = ntohs(arphdr->ar_op);
-- 
1.8.1.2