[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, 2 insertions, 2 deletions

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1e3dfb20b1cf..b083c09e3d2d 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -153,7 +153,7 @@ try_again:
                         goto csum_copy_err;
         }
 
-        if (skb->ip_summed == CHECKSUM_UNNECESSARY)
+        if (skb_csum_unnecessary(skb))
                 err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
                                               msg->msg_iov, copied       );
         else {
@@ -397,7 +397,7 @@ static inline int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh,
                              skb->len, proto, skb->csum))
                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 
-        if (skb->ip_summed != CHECKSUM_UNNECESSARY)
+        if (!skb_csum_unnecessary(skb))
                 skb->csum = ~csum_unfold(csum_ipv6_magic(&ipv6_hdr(skb)->saddr,
                                                          &ipv6_hdr(skb)->daddr,
                                                          skb->len, proto, 0));