pgreh 285 net/netfilter/nf_nat_proto.c struct pptp_gre_header *pgreh; pgreh 289 net/netfilter/nf_nat_proto.c if (skb_ensure_writable(skb, hdroff + sizeof(*pgreh) - 8)) pgreh 293 net/netfilter/nf_nat_proto.c pgreh = (struct pptp_gre_header *)greh; pgreh 307 net/netfilter/nf_nat_proto.c pgreh->call_id = tuple->dst.u.gre.key;