ip_conntrack_event_cache_init(*pskb); 
static unsigned int ip_conntrack_help(unsigned int hooknum,				      struct sk_buff **pskb,				      const struct net_device *in,				      const struct net_device *out,				      int (*okfn)(struct sk_buff *)){	struct ip_conntrack *ct;	enum ip_conntrack_info ctinfo;	/* This is where we call the helper: as the packet goes out. */	ct = ip_conntrack_get(*pskb, &ctinfo);	if (ct && ct->helper) {		unsigned int ret;		ret = ct->helper->help(pskb, ct, ctinfo);		if (ret != NF_ACCEPT)			return ret;	}	return NF_ACCEPT;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/ac3247baf8ecadf168642e3898b0212c29c79715/ip_conntrack_standalone.c/clean/net/ipv4/netfilter/ip_conntrack_standalone.c