[NET]: Treat CHECKSUM_PARTIAL as CHECKSUM_UNNECESSARY

When a transmitted packet is looped back directly, CHECKSUM_PARTIAL
maps to the semantics of CHECKSUM_UNNECESSARY.  Therefore we should
treat it as such in the stack.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 1fb30c3528bc..b316435b0e2a 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -86,7 +86,7 @@ static __sum16 checksum_udp(struct sk_buff *skb, struct udphdr *uh,
 {
         __wsum psum;
 
-        if (uh->check == 0 || skb->ip_summed == CHECKSUM_UNNECESSARY)
+        if (uh->check == 0 || skb_csum_unnecessary(skb))
                 return 0;
 
         psum = csum_tcpudp_nofold(saddr, daddr, ulen, IPPROTO_UDP, 0);