Subject: Implementing per protosw pfil hooks.
To: None <firstname.lastname@example.org>
From: Darren Reed <email@example.com>
Date: 12/11/1999 13:38:56
Some comments on an exercise this afternoon to do this:
1. Adding pfil struct reference to protosw. It seems best to do this
without it being conditional on PFIL_HOOKS so that user programs pick
don't need to screw with this option. A side effect of this is that
adding a "#include <net/pfil.h>" to the top of <sys/protosw.h> was the
quick way to avoid touching many files where <sys/protosw.h> is used
2. New struct created in pfil.h which contains two tailq heads and an
init variable - pfil_init_done has been removed: an init must be done
per pfil struct for each protosw. Considering this, I'd like to be
able to do some sort of pfil_init() in ip_init() when inetsw and
ip_protox are initialized.
3. ip_protox was moved from ip_input.c to in_proto.c and an extern for it
added to <sys/protosw.h> and removed from where it was present in .c
4. An extern for inetsw was added to <sys/protosw.h> and removed from where
it was present in .c files.
I'm tempted to proceed with (3) and (4) regardless due to them being more
of a general nature of fix-up.