Merging the PPTP helper to net-2.6.14

Harald Welte

2005-07-30

After having finished my work on the nfnetlink based subsystems, I've progressed to making the PPTP helper fit for mainline inclusion in 2.6.14.

First, it needed an update towards the 2.6.13 conntrack helper API changes (now that expect's have refcounts). Second, we don't have lockhelp.h anymore, and third I want to fall-back to ip_conntrack_proto_generic in case GRE version1 (RCF1701) packets are seen. Stay tuned.