Ok, will start making a ChangeLog for the -acme series of patches 8)

2.4.16-acme5
. include tcp.h in some protocols
. fix syncookies and khttpd wrt per slabcache tcp tp_pinfo
. fix some netfilter files wrt having to include icmp.h, in.h, that aren't
  anymore included from sock.h

2.4.16-acme4
. remove SPX bits from sock.h, make it use a private slabcache for its socks
. remove sk->tp_pinfo, tp_raw and tp_raw4 went to appropriate headers
. moved af_unix protinfo struct to af_unix headers
. turned protinfo from a union to a void pointer
. renamed equal/after/before and friends in decnet to have a dn_ prefix as
  they were clashing with tcp.h functions of the same name
. included tcp.h in several af_PROTO.c files, as they need the TCP_SYN_SENT
  and friends and tcp.h is not included anymore from sock.h, I'll change
  that enum to NETPROTO_SYN_SENT, etc, as they are not used only by TCP,
  with that we can remove tcp.h from all the other protocols

2.4.16-acme3
. Ouch, found the bug of the crashing ipv4 incoming connections: in
  tcp_create_openreq_child it uses the existing (accept) socket as a "template",
  copying just the first sizeof(struct sock) bytes, when now it needs to copy
  the net_proto_family->sk_size. Ok, now to move af_unix out of protinfo and
  turn it into a void pointer, etc