MFC r291329:

Remove redundant DPSRCS which were already in SRCS.

MFC r288477:

META_MODE: For some reason meta mode cannot generate the intermediate tab.c
files. Split up all of the targets to be more clear on how they are
generated to fix the problem.

MFC r288249:

Add SUBDIR_PARALLEL.

MFC r288248:

Remove disconnected directories.

MFC r269585 - Honour WITH and WITHOUT_INET6_SUPPORT.

Approved by: glebius (mentor - implicit)

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Update ipfilter 4.1.28 --> 5.1.2.

Approved by: glebius (mentor)
BSD Licensed by: Darren Reed <darrenr@reed.wattle.id.au> (author)

Link ipfilter(4) and ipfilter(5) to the build to stop the wrong man page
displaying for 'man 4 ipfilter'.

PR: docs/118020
Approved by: gjb (mentor)
MFC after: 5 days

Use both NO_WFORMAT and NO_WARRAY_BOUNDS for sbin/ipf, it would be too
disruptive to actually fix all the warnings, and the code hasn't been
maintained for several years.

MFC after: 1 week

Always assign WARNS using ?=

- fix some nearby style bugs
- include Makefile.inc where it makes sense and reduces duplication

Approved by: ed (co-mentor)

Switch the default WARNS level for sbin/ to 6.

Submitted by: Ulrich Spörlein

This makefile builds contrib code, so I won't try to fix all the
casts from pointer to int here.

Exclude inet_addr.c from the build.
It only provides inet_aton(), which is already provided by the libc. This
causes multiple symbol definitions when linking statically.

Reviewed by: darrenr

Merge IPFilter 4.1.23 back to HEAD
See src/contrib/ipfilter/HISTORY for details of changes since 4.1.13

Fix the manual build.

Regularly scheduled patch to unbreak regularly scheduled post-ipfilter
buildworld breakage.

Exclude loglevel.c from the build. It does not appear to be used by
anything in the tree and buildworld succeeds just fine without it.

Adapt to ipf 4.1.13

fix style nit

Add missing library dependencies.

Add printproto.c to libipf

Fix the contents of the underneath .depend files and "make checkdpadd".

Enable building /sbin/ipf (but not the rescue version) with the ability to
parse bpf strings for filter rules in ipf.conf

Patches from Ruslam Ermilov to remove NetBSD bits from Makefiles and cleanup
build problems with rescue.

Not looking for ipfilter source files in the right place

create a new build heirarchy for ipfilter tools

Link a couple of missing manpages

Submitted by: Hideyuki KURASHINA <rushani@FreeBSD.org>
MFC after: 1 week

style.Makefile(5):
Use WARNS?= instead of WARNS=.

Move my maintainership of parts of ipfilter back to Darren Reed

* add extra -I path to get the "matching" header files.

Default to WARNS=2.
Binary builds that cannot handle this must explicitly set WARNS=0.

Reviewed by: mike

Pick up the correct headers from sys/contrib/ipfilter/netinet.

Backout previous change (removal of -I${.CURDIR}/../../sys/netinet).
This is needed to pick up the right headers. Wrong headers from
src/contrib/ipfilter are used otherwise.

The right fix would be to fix contrib/ipfilter C sources to pick up
headers from <sys/netinet>.

Noticed by: peter

Removed -I${.CURDIR}/.../sys from CFLAGS.

- Backout botched attempt to introduce MANSECT feature.
- MAN[1-9] -> MAN.

Build with -DUSE_INET6 so that we can actually use the IPv6 support in
IPFilter 3.4.x.

Approved by: darrenr, guido

add common.c to SRCS to fix compile problems

Add MAINTAINER tag.

The Makefiles in sbin/{ipfstat,ipmon,ipnat} were repository copied
from the respective directories in usr.sbin

Revive userland stuff for ipfilter.
Also fixes:
PR: 7791