[B.A.T.M.A.N.] [PATCH 1/5] batman-adv: ignore protocol packets if the interface did not enable this protocol

Marek Lindner
2012-03-10T22:17:49Z

Reported-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
bat_iv_ogm.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/bat_iv_ogm.c b/bat_iv_ogm.c
index eca2b44..819ae49 100644
--- a/bat_iv_ogm.c
+++ b/bat_iv_ogm.c
@@ -1186,6 +1186,7 @@ out:
static int bat_iv_ogm_receive(struct sk_buff *skb,
struct hard_iface *if_incoming)
{
+ struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface);
struct batman_ogm_packet *batman_ogm_packet;
struct ethhdr *ethhdr;
int buff_pos = 0, packet_len;
@@ -1196,6 +1197,11 @@ static int bat_iv_ogm_receive(struct sk_buff *skb,
if (!ret)
return NET_RX_DROP;

+ /* did we receive a B.A.T.M.A.N. IV OGM packet on an interface
+ * that does not have B.A.T.M.A.N. IV enabled ? */
+ if (bat_priv->bat_algo_ops->bat_ogm_emit != bat_iv_ogm_emit)
+ return NET_RX_DROP;
+
packet_len = skb_headlen(skb);
ethhdr = (struct ethhdr *)skb_mac_header(skb);
packet_buff = skb->data;
--
1.7.9.1