net80211: migrate the group/unicast key check into inline functions

The way that net80211 and drivers are checking for the /type/ of key
is to check if it's in the vap WEP key array and if so, it's

net80211: migrate the group/unicast key check into inline functions

The way that net80211 and drivers are checking for the /type/ of key
is to check if it's in the vap WEP key array and if so, it's a group
key. If not, it's a unicast key.

That's not only kind of terrible, but it's also going to be
problematic with future 802.11 support (for multiple unicast keys
and IGTK keys for management frame protection.)

So as part of this, remove the places where this is done and
instead use a pair inline functions - ieee80211_is_key_global() and
ieee80211_is_key_unicast(). They currenly still use the same logic
but the drivers and net80211 stack isn't doing it itself.

There are still open questions about why keys are not being
correctly tagged as GROUP, GTK, PTK, etc. That will be investigated
and addressed in follow-up work as a pre-cursor to MFP, IGTK, etc.
as mentioned above.

Testing:

* iwn, rtwn - STA mode

Differential Revision: https://reviews.freebsd.org/D45516

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

Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/

rtwm: purge EOL release compatibility

Remove FreeBSD 11 support

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/603
Differential Revision: https://reviews.freebsd.org/D35

rtwm: purge EOL release compatibility

Remove FreeBSD 11 support

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/603
Differential Revision: https://reviews.freebsd.org/D35560

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

Merge ^/head r309519 through r309757.

net80211 + drivers: convert to ieee80211_crypto_get_key_wepidx().

Proposed by: adrian

Merge ^/head r307383 through r307735.

rtwn(4), urtwn(4): merge common code, add support for 11ac devices.

All devices:
- add support for rate adaptation via ieee80211_amrr(9);
- use short preamble for transmitted frames when needed;
- m

rtwn(4), urtwn(4): merge common code, add support for 11ac devices.

All devices:
- add support for rate adaptation via ieee80211_amrr(9);
- use short preamble for transmitted frames when needed;
- multi-bss support:
* for RTL8821AU: 2 VAPs at the same time;
* other: 1 any VAP + 1 sta VAP.
RTL8188CE:
- fix IQ calibration bug (reason of significant speed degradation);
- add h/w crypto acceleration support.
USB:
- A-MPDU Tx support;
- short GI support;
Other:
- add support for RTL8812AU / RTL8821AU chipsets
(a/b/g/n only; no ac yet);
- split merged code into subparts:
* bus glue (usb/*, pci/*, rtl*/usb/*, rtl*/pci/*)
* common (if_rtwn*)
* chip-specific (rtl*/*)
- various other bugfixes.

Due to code reorganization, module names / requirements were changed too:
urtwn urtwnfw -> rtwn rtwn_usb rtwnfw
rtwn rtwnfw -> rtwn rtwn_pci rtwnfw

Tested with RTL8188CE, RTL8188CUS, RTL8188EU and RTL8821AU.

Tested by: kevlo, garga,
Peter Garshtja <peter.garshtja@ambient-md.com>,
Kevin McAleavey <kevin.mcaleavey@knosproject.com>,
Ilias-Dimitrios Vrachnis <id@vrachnis.com>,
<otacilio.neto@bsd.com.br>
Relnotes: yes

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