Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

[linux-2.6-block.git] / net / openvswitch / actions.c

diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 8a8c0b8b4f63a4bd8e5ff776250189558e6fcb1e..ee34f474ad1465087da8fd506410559abe47d81e 100644 (file)
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -273,28 +273,36 @@ static int set_eth_addr(struct sk_buff *skb, struct sw_flow_key *flow_key,
        return 0;
 }
 
-static void set_ip_addr(struct sk_buff *skb, struct iphdr *nh,
-                       __be32 *addr, __be32 new_addr)
+static void update_ip_l4_checksum(struct sk_buff *skb, struct iphdr *nh,
+                                 __be32 addr, __be32 new_addr)
 {
        int transport_len = skb->len - skb_transport_offset(skb);
 
+       if (nh->frag_off & htons(IP_OFFSET))
+               return;
+
        if (nh->protocol == IPPROTO_TCP) {
                if (likely(transport_len >= sizeof(struct tcphdr)))
                        inet_proto_csum_replace4(&tcp_hdr(skb)->check, skb,
-                                                *addr, new_addr, 1);
+                                                addr, new_addr, 1);
        } else if (nh->protocol == IPPROTO_UDP) {
                if (likely(transport_len >= sizeof(struct udphdr))) {
                        struct udphdr *uh = udp_hdr(skb);
 
                        if (uh->check || skb->ip_summed == CHECKSUM_PARTIAL) {
                                inet_proto_csum_replace4(&uh->check, skb,
-                                                        *addr, new_addr, 1);
+                                                        addr, new_addr, 1);
                                if (!uh->check)
                                        uh->check = CSUM_MANGLED_0;
                        }
                }
        }
+}
 
+static void set_ip_addr(struct sk_buff *skb, struct iphdr *nh,
+                       __be32 *addr, __be32 new_addr)
+{
+       update_ip_l4_checksum(skb, nh, *addr, new_addr);
        csum_replace4(&nh->check, *addr, new_addr);
        skb_clear_hash(skb);
        *addr = new_addr;