datapath: fix the calculation of checksum for vlan header

[cascardo/ovs.git] / datapath / actions.c

diff --git a/datapath/actions.c b/datapath/actions.c
index f638ffc..9202335 100644 (file)
--- a/datapath/actions.c
+++ b/datapath/actions.c
@@ -61,7 +61,7 @@ static int __pop_vlan_tci(struct sk_buff *skb, __be16 *current_tci)
 
        if (get_ip_summed(skb) == OVS_CSUM_COMPLETE)
                skb->csum = csum_sub(skb->csum, csum_partial(skb->data
-                                       + ETH_HLEN, VLAN_HLEN, 0));
+                                       + (2 * ETH_ALEN), VLAN_HLEN, 0));
 
        vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN);
        *current_tci = vhdr->h_vlan_TCI;
@@ -118,7 +118,7 @@ static int push_vlan(struct sk_buff *skb, const struct ovs_action_push_vlan *vla
 
                if (get_ip_summed(skb) == OVS_CSUM_COMPLETE)
                        skb->csum = csum_add(skb->csum, csum_partial(skb->data
-                                       + ETH_HLEN, VLAN_HLEN, 0));
+                                       + (2 * ETH_ALEN), VLAN_HLEN, 0));
 
        }
        __vlan_hwaccel_put_tag(skb, ntohs(vlan->vlan_tci) & ~VLAN_TAG_PRESENT);