-
- if (th != &_tcph)
- memcpy(&_tcph, th, sizeof(_tcph));
-
- if ((*pskb)->ip_summed != CHECKSUM_HW)
- _tcph.check = csum_fold(csum_partial((char *)diffs,
- sizeof(diffs),
- _tcph.check^0xFFFF));
- memcpy((*pskb)->data + (*pskb)->nh.iph->ihl*4,
- &_tcph, sizeof(_tcph));
- if ((*pskb)->ip_summed == CHECKSUM_HW)
- if (skb_checksum_help(pskb, inward))
- return 0;
- (*pskb)->nfcache |= NFC_ALTERED;
- }