[NETFILTER]: Delete unnecessary skb_linearize() calls in iptables_{filter,mangle}.c

net/ipv4/netfilter/iptable_filter.c

@@ -107,10 +107,6 @@ ipt_local_out_hook(unsigned int hook,
 		   const struct net_device *out,
 		   int (*okfn)(struct sk_buff *))
 {
-	/* FIXME: Push down to extensions --RR */
-	if (skb_is_nonlinear(*pskb) && skb_linearize(*pskb, GFP_ATOMIC) != 0)
-		return NF_DROP;
-
 	/* root is playing with raw sockets. */
 	if ((*pskb)->len < sizeof(struct iphdr)
 	    || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) {

net/ipv4/netfilter/iptable_mangle.c

@@ -145,10 +145,6 @@ ipt_local_hook(unsigned int hook,
 	u_int32_t saddr, daddr;
 	unsigned long nfmark;
 
-	/* FIXME: Push down to extensions --RR */
-	if (skb_is_nonlinear(*pskb) && skb_linearize(*pskb, GFP_ATOMIC) != 0)
-		return NF_DROP;
-
 	/* root is playing with raw sockets. */
 	if ((*pskb)->len < sizeof(struct iphdr)
 	    || (*pskb)->nh.iph->ihl * 4 < sizeof(struct iphdr)) {