Signed-off-by: Marek Lindner <mareklindner(a)neomailbox.ch> --- net/batman-adv/soft-interface.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 1c1ed5a..4667719 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -186,7 +186,6 @@ static int batadv_interface_tx(struct sk_buff *skb, struct batadv_priv *bat_priv = netdev_priv(soft_iface); struct batadv_hard_iface *primary_if = NULL; struct batadv_bcast_packet *bcast_packet; - __be16 ethertype = htons(ETH_P_BATMAN); static const u8 stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, 0x00, 0x00}; static const u8 ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00, @@ -216,7 +215,8 @@ static int batadv_interface_tx(struct sk_buff *skb, case ETH_P_8021Q: vhdr = vlan_eth_hdr(skb); - if (vhdr->h_vlan_encapsulated_proto != ethertype) { + /* drop batman-in-batman packets to prevent loops */ + if (vhdr->h_vlan_encapsulated_proto != htons(ETH_P_BATMAN)) { network_offset += VLAN_HLEN; break; } @@ -404,7 +404,6 @@ void batadv_interface_rx(struct net_device *soft_iface, { struct batadv_bcast_packet *batadv_bcast_packet; struct batadv_priv *bat_priv = netdev_priv(soft_iface); - __be16 ethertype = htons(ETH_P_BATMAN); struct vlan_ethhdr *vhdr; struct ethhdr *ethhdr; unsigned short vid; @@ -434,7 +433,8 @@ void batadv_interface_rx(struct net_device *soft_iface, vhdr = (struct vlan_ethhdr *)skb->data; - if (vhdr->h_vlan_encapsulated_proto != ethertype) + /* drop batman-in-batman packets to prevent loops */ + if (vhdr->h_vlan_encapsulated_proto != htons(ETH_P_BATMAN)) break; /* fall through */ -- 2.7.0