Copy stable/10@r272459 to releng/10.1 as part of
the 10.1-RELEASE process.

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

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

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

o Create directory sys/netpfil, where all packet filters should
reside, and move there ipfw(4) and pf(4).

o Move most modified parts of pf out of contrib.

Actual movements:

sys/contrib/pf/net/*.c -> sys/netpfil/pf/
sys/contrib/pf/net/*.h -> sys/net/
contrib/pf/pfctl/*.c -> sbin/pfctl
contrib/pf/pfctl/*.h -> sbin/pfctl
contrib/pf/pfctl/pfctl.8 -> sbin/pfctl
contrib/pf/pfctl/*.4 -> share/man/man4
contrib/pf/pfctl/*.5 -> share/man/man5

sys/netinet/ipfw -> sys/netpfil/ipfw

The arguable movement is pf/net/*.h -> sys/net. There are
future plans to refactor pf includes, so I decided not to
break things twice.

Not modified bits of pf left in contrib: authpf, ftp-proxy,
tftp-proxy, pflogd.

The ipfw(4) movement is planned to be merged to stable/9,
to make head and stable match.

Discussed with: bz, luigi

Update packet filter (pf) code to OpenBSD 4.5.

You need to update userland (world and ports) tools
to be in sync with the kernel.

Submitted by: mlaier
Submitted by: eri

Make ALTQ cope with disappearing interfaces (particularly common with mpd
and netgraph in gernal). This also allows to add queues for an interface
that is not yet existing (you have to provide the bandwidth for the
interface, however).

PR: kern/106400, kern/117827
MFC after: 2 weeks

Resolve conflicts created during the import of pf 3.7 Some features are
missing and will be implemented in a second step. This is functional as is.

Tested by: freebsd-pf, pfsense.org
Obtained from: OpenBSD

Commit userland part of pf version 3.5 from OpenBSD (OPENBSD_3_5_BASE).

Fix $FreeBSD$ ids.

Fix some style(9) related issues after discussion with/education from bde:
- Add <sys/param.h> and <limits.h> where required (do not depend on other
headers pulling it in).
- __dead -> __dead2
- #if defined() -> #ifdef
- Remove ugly PRIu64 macros and use %llu w/ (unsigned long long) cast.

All changes looped back to OpenBSD (where applicable) for easier sync in the
future.

Requested by: bde
Approved by: bms(mentor)

Apply diff from the port.
Rather small diff for the userland (in contrast to the kernel):
- Some header file location/differences
- Clean compilation on 64bit arch (identified by bento a long time ago)
- ALTQ not (yet) available. Leave a switch for patchsets and future ...
- most files can be used from the vendor branch

Approved by: bms(in general)

This commit was generated by cvs2svn to compensate for changes in r126353,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenBSD's pf userland as of OpenBSD 3.4

Approved by: bms(mentor), core(in general)