return 0;
/* Not exclusive use of packet? Must copy. */
- if (skb_shared(*pskb) || skb_cloned(*pskb))
+ if (skb_cloned(*pskb) && !skb_clone_writable(*pskb, writable_len))
+ goto copy_skb;
+ if (skb_shared(*pskb))
goto copy_skb;
return pskb_may_pull(*pskb, writable_len);
{
__be32 diff[] = { ~from, to };
if (skb->ip_summed != CHECKSUM_PARTIAL) {
- *sum = csum_fold(csum_partial((char *)diff, sizeof(diff),
+ *sum = csum_fold(csum_partial(diff, sizeof(diff),
~csum_unfold(*sum)));
if (skb->ip_summed == CHECKSUM_COMPLETE && pseudohdr)
- skb->csum = ~csum_partial((char *)diff, sizeof(diff),
+ skb->csum = ~csum_partial(diff, sizeof(diff),
~skb->csum);
} else if (pseudohdr)
- *sum = ~csum_fold(csum_partial((char *)diff, sizeof(diff),
+ *sum = ~csum_fold(csum_partial(diff, sizeof(diff),
csum_unfold(*sum)));
}
EXPORT_SYMBOL(nf_proto_csum_replace4);