datapath: make skb->csum consistent with rest of networking stack.

[sliver-openvswitch.git] / datapath / actions.c

diff --git a/datapath/actions.c b/datapath/actions.c
index 0dac658..09d0c3f 100644 (file)
--- a/datapath/actions.c
+++ b/datapath/actions.c
@@ -132,9 +132,17 @@ static int set_eth_addr(struct sk_buff *skb,
        if (unlikely(err))
                return err;
 
+       if (get_ip_summed(skb) == OVS_CSUM_COMPLETE)
+               skb->csum = csum_sub(skb->csum, csum_partial(eth_hdr(skb),
+                                                            ETH_ALEN * 2, 0));
+
        memcpy(eth_hdr(skb)->h_source, eth_key->eth_src, ETH_ALEN);
        memcpy(eth_hdr(skb)->h_dest, eth_key->eth_dst, ETH_ALEN);
 
+       if (get_ip_summed(skb) == OVS_CSUM_COMPLETE)
+               skb->csum = csum_add(skb->csum, csum_partial(eth_hdr(skb),
+                                                            ETH_ALEN * 2, 0));
+
        return 0;
 }