From: Marek Lindner lindner_marek@yahoo.de
The DHCP filter inspects packets to determine whether or not to send them via ethernet unicast. This patch adds 802.1Q (vlan) support for this check.
Signed-off-by: Marek Lindner lindner_marek@yahoo.de [sven.eckelmann@gmx.de: Rework on top of current version] Signed-off-by: Sven Eckelmann sven.eckelmann@gmx.de --- drivers/staging/batman-adv/gateway_client.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/batman-adv/gateway_client.c b/drivers/staging/batman-adv/gateway_client.c index 3d4e109..fde1d8a 100644 --- a/drivers/staging/batman-adv/gateway_client.c +++ b/drivers/staging/batman-adv/gateway_client.c @@ -415,6 +415,14 @@ int gw_is_target(struct bat_priv *bat_priv, struct sk_buff *skb) ethhdr = (struct ethhdr *)skb->data; header_len += ETH_HLEN;
+ /* check for initial vlan header */ + if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) { + if (!pskb_may_pull(skb, header_len + VLAN_HLEN)) + return 0; + ethhdr = (struct ethhdr *)(skb->data + VLAN_HLEN); + header_len += VLAN_HLEN; + } + /* check for ip header */ if (ntohs(ethhdr->h_proto) != ETH_P_IP) return 0;