gre_pkt_to_tuple   32 include/linux/netfilter/nf_conntrack_proto_gre.h bool gre_pkt_to_tuple(const struct sk_buff *skb, unsigned int dataoff,
gre_pkt_to_tuple  295 net/netfilter/nf_conntrack_core.c 		return gre_pkt_to_tuple(skb, dataoff, net, tuple);