[14/16] batman-adv: drop STP over batman
Commit Message
From: Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>
Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
---
net/batman-adv/soft-interface.c | 6 ++++++
1 file changed, 6 insertions(+)
@@ -130,6 +130,7 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
struct hard_iface *primary_if = NULL;
struct bcast_packet *bcast_packet;
struct vlan_ethhdr *vhdr;
+ uint8_t stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, 0x00, 0x00};
unsigned int header_len = 0;
int data_len = skb->len, ret;
short vid = -1;
@@ -159,6 +160,11 @@ static int interface_tx(struct sk_buff *skb, struct net_device *soft_iface)
/* Register the client MAC in the transtable */
tt_local_add(soft_iface, ethhdr->h_source, skb->skb_iif);
+ /* don't accept stp packets. STP does not help in meshes.
+ * better use the bridge loop avoidance ... */
+ if (compare_eth(ethhdr->h_dest, stp_addr))
+ goto dropped;
+
if (is_multicast_ether_addr(ethhdr->h_dest)) {
do_bcast = true;