Re: [PATCH net-next] bpf: add skb_postpush_rcsum and fix dev_forward_skb occasions

On 07.01.2016 02:01, Daniel Borkmann wrote:

+static inline void skb_postpush_rcsum(struct sk_buff *skb,
+				      const void *start, unsigned int len)
+{
+	if (skb->ip_summed == CHECKSUM_COMPLETE)
+		skb->csum = csum_add(skb->csum, csum_partial(start, len, 0));

skb->csum = csum_partial(start, len, skb->csum);

should work without calling carry-add twice, no?

Bye,
Hannes