RFC2374_FRAG_HDR_SIZE
max_payload += RFC2374_FRAG_HDR_SIZE;
return (1 << (max_rec + 1)) - RFC2374_FRAG_HDR_SIZE;
if (len <= RFC2374_FRAG_HDR_SIZE)
len -= RFC2374_FRAG_HDR_SIZE;
fg_off = ptask->max_payload - RFC2374_FRAG_HDR_SIZE;
+ ptask->max_payload - RFC2374_FRAG_HDR_SIZE;
ptask->max_payload = skb->len + RFC2374_FRAG_HDR_SIZE;
bufhdr = skb_push(ptask->skb, RFC2374_FRAG_HDR_SIZE);