int pskb_expand_head(void)
{
	return 0;
}

int __kfree_skb(void)
{
	return 0;
}

int __skb_linearize(void)
{
	return 0;
}

int __dev_get_by_name(void)
{
	return 0;
}

int ___pskb_trim(void)
{
	return 0;
}

struct sk_buff;
void skb_over_panic(struct sk_buff *skb, int len, void *here)
{
}

void skb_under_panic(struct sk_buff *skb, int len, void *here)
{
}

int kfree(void)
{
	return 0;
}