1 files changed, 12 insertions, 4 deletions

diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 8a8c0b8b4f63..ee34f474ad14 100644
--- 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;