[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>
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1e3dfb2..b083c09 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -153,7 +153,7 @@
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 @@
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));