net8011: radiotap: add more EHT constants

MFC after: 3 days

sys: Remove $FreeBSD$: one-line .c comment pattern

Remove /^/[*/]\s*\$FreeBSD\$.*\n/

net80211: Radiotap: add two more EHT defines

An updated iwlwifi needs further radiotap updates for EHT.

Sponsored by: The FreeBSD Foundation
MFC after: 10 days

net80211: Radiotap: update for defines

ath1xk drivers require further HE defines. Some of those we had
already predicted as comments in the past.

Sponsored by: The FreeBSD Foundation
MFC after: 10 days

net80211: Radiotap: update for newer standards (add EHT, U-SIG)

iwlwifi already uses suggested EHT and U-SIG bits as well as some
more TLV bits. Update radiotap to know of those even if they might
get updated again in the future in order to get newer versions of
the driver to compile.

Sponsored by: The FreeBSD Foundation
MFC after: 10 days

net80211: radiotap: add one more define for HE

Add one more define for HE radiotap used by a driver.

MFC after: 1 week
Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D35977

net80211: radiotap add another define

Add a define needed by latest iwlwifi-next.

Sponsored by: The FreeBSD Foundation

net80211/LinuxKPI: add more radiotap definitions

Add more raditap definitions based on "names" found in actual drivers
and based on documentation from radiotap.org (where avail).

Leave one specific "duplicate" in the LinuxKPI implementation but
otherwise manage it all in net80211.

Sponsored by: The FreeBSD Foundation
MFC after: 10 days
Reviewed by: hselasky, adrian, sam
Differential Revision: https://reviews.freebsd.org/D30641

net: clean up empty lines in .c and .h files

sys: general adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

No functional change intended.

[net80211] initial VHT radiotap implementation defines from upstream radiotap.

Add in the missing radiotap definitions from the sipsolutions.net
radiotap "upstream" source.

Add a radiotap vendor header definition.

Add the MCS radiotype entry.

Add in the vendor extension bit in the radiotap header.

A new jail(8) with a configuration file, to replace the work currently done
by /etc/rc.d/jail.

- Import the HEAD csup code which is the basis for the cvsmode work.

update channel flag defs to match _ieee80211.h so cpp doesn't complain
about redefinitions

MFC after: 1 week

Move the XCHANNEL radiotap definition to a free slot. NetBSD defined some
additional values causing a conflict.

Submitted by: sam
Approved by: re (kensmith)

Prefer __packed to __attribute__((__packed__)).

OK'd by sam@ months ago...

Update 802.11 wireless support:
o major overhaul of the way channels are handled: channels are now
fully enumerated and uniquely identify the operating characteristics;
these changes are visible to user applications which require changes
o make scanning support independent of the state machine to enable
background scanning and roaming
o move scanning support into loadable modules based on the operating
mode to enable different policies and reduce the memory footprint
on systems w/ constrained resources
o add background scanning in station mode (no support for adhoc/ibss
mode yet)
o significantly speedup sta mode scanning with a variety of techniques
o add roaming support when background scanning is supported; for now
we use a simple algorithm to trigger a roam: we threshold the rssi
and tx rate, if either drops too low we try to roam to a new ap
o add tx fragmentation support
o add first cut at 802.11n support: this code works with forthcoming
drivers but is incomplete; it's included now to establish a baseline
for other drivers to be developed and for user applications
o adjust max_linkhdr et. al. to reflect 802.11 requirements; this eliminates
prepending mbufs for traffic generated locally
o add support for Atheros protocol extensions; mainly the fast frames
encapsulation (note this can be used with any card that can tx+rx
large frames correctly)
o add sta support for ap's that beacon both WPA1+2 support
o change all data types from bsd-style to posix-style
o propagate noise floor data from drivers to net80211 and on to user apps
o correct various issues in the sta mode state machine related to handling
authentication and association failures
o enable the addition of sta mode power save support for drivers that need
net80211 support (not in this commit)
o remove old WI compatibility ioctls (wicontrol is officially dead)
o change the data structures returned for get sta info and get scan
results so future additions will not break user apps
o fixed tx rate is now maintained internally as an ieee rate and not an
index into the rate set; this needs to be extended to deal with
multi-mode operation
o add extended channel specifications to radiotap to enable 11n sniffing

Drivers:
o ath: add support for bg scanning, tx fragmentation, fast frames,
dynamic turbo (lightly tested), 11n (sniffing only and needs
new hal)
o awi: compile tested only
o ndis: lightly tested
o ipw: lightly tested
o iwi: add support for bg scanning (well tested but may have some
rough edges)
o ral, ural, rum: add suppoort for bg scanning, calibrate rssi data
o wi: lightly tested

This work is based on contributions by Atheros, kmacy, sephe, thompsa,
mlaier, kevlo, and others. Much of the scanning work was supported by
Atheros. The 11n work was supported by Marvell.

Update to reflect correct usage:
o leave IEEE80211_RADIOTAP_HDRLEN for portability to other systems but
correct comment about radiotap headers being padded to 64-bytes
(hasn't been true for many years)
o remove reference to IEEE80211_RADIOTAP_FCS; it was never used, instead
the flags are marked with IEEE80211_RADIOTAP_F_FCS to indicate whether
or not FCS is present

Might be better to just remove IEEE80211_RADIOTAP_HDRLEN so drivers
don't bogusly pad.

MFC after: 2 weeks

add flag to tag frames w/ a known bad FCS

Obtained from: netbsd
MFC after: 1 week

o replace out-of-line copy of FCS w/ a flag that indicates the
frame includes FCS (requires applications to be updated, but since
we weren't doing the out-of-line FCS stuff anyway app changes
were needed already)
o add a flag to indicate padding exists between the 802.11 header and
the payload (e.g. for Atheros cards)
o diff reducation against netbsd

MFC after: 1 week

Update 802.11 support; too much new functionality to fully describe
here but it includes completed 802.11g, WPA, 802.11i, 802.1x, WME/WMM,
AP-side power-save, crypto plugin framework, authenticator plugin framework,
and access control plugin frameowrk.

Resolve the issue of whether frames have FCS or not. Frame data does not
include FCS; if you want to provide it you can put it in the header.

Submitted by: David Young

Sync with netbsd:

o #ifdef _KERNEL the fallback definition for DLT_IEEE802_11_RADIO
o fix many comments
o rename antenna stuff and fix units/reference signal
o change IEEE80211_RADIOTAP_DBM_TX_POWER from unsigned 16-bit value
to a signed 8-bit value
o change IEEE80211_RADIOTAP_FLAGS from 16 bits to 8 bits to simplify
padding requirements
o drop IEEE80211_RADIOTAP_TIME
o change IEEE80211_RADIOTAP_ANTENNA from 16 bits to 8 bits
o drop IEEE80211_RADIOTAP_PAD
o add channel flag definitions for outside the kernel so radiotap
doesn't depend on stuff in ieee80211*.h

Obtained from: NetBSD

Experimental bpf capture format for 802.11 devices. The link layer
type belongs in net/bpf.h but we keep it here for the moment.

P:
Submittep by:
Obtained from: David Young <dyoung@pobox.com>