Copy stable/11@r303970 to releng/11.0 as part of the 11.0-RELEASE
cycle.

Prune svn:mergeinfo from the new branch, and rename it to RC1.

Update __FreeBSD_version.

Use the quarterly branch for the default FreeBSD.conf pkg(8) repo and
the dvd1.iso packages population.

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

MFC r303115:

urtwn: fix A-MSDU tx aggregation when encryption is used.

Clear unused (undocumented) CAM bytes while setting a key;
without that, hardware does weird things when A-MSDU bit in QoS header
is set.

Tested with RTL8188CUS (AP) -> RTL8188EU (STA) (A-MSDU transmit).

Reported by: many
Approved by: re (gjb)
Obtained from: https://github.com/s3erios/urtwm

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

urtwn, rtwn, rsu: switch to ieee80211_add_channel_list_2ghz().

- Use device's channel list instead of default one (from
ieee80211_init_channels()); adds 12 - 14 2GHz channels.
- Add ic_getradiocaps() method.

urtwn: setup per-frame retry limit.

Override global retry limit (which is set in R92C_RL) via per-frame
TX descriptor field. Obsoletes D3840 (should work better with 2+ vaps).

Tested with RTL8188EU and RTL8192CUS in STA mode (maxretry = [3-9]).

urtwn: optimize rate lookup in the urtwn_ra_init()

Replace loop with switch statement (rate2ridx())
(should be noop).

Tested with RTL8188EU / RTL8188CUS, STA mode.

Reviewed by: adrian
Differential Revision: https://reviews.freebsd.org/D4848 (rebased)

[urtwn] migrate urtwn out into sys/dev/urtwn/ .

There's some upcoming work to add new chipset support here and I'd
like to only add 802.11n support to one driver, instead of both
urtwn and rtwn.

There's also missing support for things like 802.11n, some powersave
work, bluetooth integration/coexistence, etc, and also newer parts
(like 8192EU, maybe some 11ac parts, not sure yet.)

So, this is hopefully the first step in a longer set of steps to unify
rtwn/urtwn and extend it with more interesting chipset and functionality
support.

Reviewed by: kevlo

urtwn: shutdown the device properly

- R92C path: NetBSD (mostly)
- R88E path: TP-Link driver

Tested with RTL8188EU and RTL8188CUS.

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D5198

urtwn: add temperature calibration

Redo LC calibration if temperature changed significantly since last
calibration.

Tested with RTL8188EU/RTL8188CUS in STA mode.

Reviewed by: kevlo
Approved by: adrian (mentor)
Obtained from: NetBSD (mostly)
Differential Revision: https://reviews.freebsd.org/D4966

urtwn: rework debug handling

- Use bitmap for debug output selection.
- Add few new messages (one for URTWN_DEBUG_BEACON
and another one for URTWN_DEBUG_INTR).
- Replace an undocumented URTWN_DEBUG definition with USB_DEBUG.

Tested with RTL8188EU / RTL8188CUS in IBSS / HOSTAP modes.

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4959

urtwn: add ROM structure for RTL8188EU

- Add the structure with already known fields offsets
(some of them were taken from this driver,
some (channel_plan, rf_* fields) - from TP-LINK official driver)
- Fix a typo / dehardcode a constant in RTL8192C ROM structure.

Tested with RTL8188EU, STA mode

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4274

urtwn: add bits for R92C_HWSEQ_CTRL and R92C_TXPAUSE registers

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4770

urtwn: add support for hardware encryption (WEP, TKIP and CCMP)

Tested with:
- RTL8188EU;
- RTL8188CUS;

Modes:
- IBSS mode: TKIP, CCMP (WPA-None);
- STA / HOSTAP modes - WEP (static), TKIP, CCMP;

Reviewed by: kevlo
Approved by: adrian (mentor)
Obtained from: OpenBSD (mostly)
Differential Revision: https://reviews.freebsd.org/D4448

urtwn: add rate control support for RTL8188EU.

Tested with:
- RTL8188EU, STA and HOSTAP modes.
- RTL8188CUS, STA mode.

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4402

urtwn: add WME support

Tested with:
- RTL8188CUS, HOSTAP mode.
- RTL8188EU, STA mode.

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4020

urtwn: fix some regressions after r290630

- Restore R92C_TXDW4_HWSEQ_EN bit - it is used by non-8188EU chips.
- Fix DRVRATE bit usage.

Tested with:
- RTL8188EU, STA mode.
- RTL8188CUS, STA mode.

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4352

urtwn(4): rework ROM reading.

- Add error handling for urtwn_(r88e_)read_rom() and
urtwn_efuse_*() functions.
- Remove code duplication between urtwn_efuse_read() and
urtwn_r88e_read_rom().
- Merge r88e_rom and (r92c_)rom structures
(only one of them can be used at the same time).
- Other minor fixes / improvements.

Tested with RTL8188EU, STA mode
(URTWN_DEBUG + USB_DEBUG, hw.usb.urtwn.debug=3, no visual differences).

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4253

urtwn(4): fix the build.

Add some missing bits from D4020.

urtwn(4): add HOSTAP mode support.

Tested with RTL8188EU, HOSTAP and STA modes

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4034

urtwn(4): refactor and fix TX path.

- Split urtwn_tx_start() into urtwn_tx_data() and urtwn_tx_start()
(the last will be used for beacon updates / raw xmit path).
- Remove unneeded code from _urtwn_getbuf().
- Use CCK11 for data frames in 11b mode.
- Send EAPOL frames at 1 Mbps.
- Reduce code duplication in urtwn_tx_data().
- Fix sequence numbering.
- Add IEEE80211_RADIOTAP_F_WEP flag for encrypted frames.
- Check URTWN_RUNNING flag under lock.

Tested with RTL8188EU, STA mode.

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D4017

urtwn(4): improve RX filter.

- Filter out unneeded frames in STA mode.
- Implement ic_promisc() call.

Tested with RTL8188EU, STA and MONITOR modes.

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D3999

- Split one 4-byte R92C_CR register into 2-byte R92C_CR and 1-byte R92C_MSR
registers (they are used for different purposes).
- Wrap R92C_MSR modifications into urtwn_set_mode().

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D3838

urtwn(4): fix the RSSI calculation for RTL8188EU.

This change also reverts r252405 (causes integer underflow).

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D3820

urtwn(4): replace hardcoded rate indices with their names

Reviewed by: kevlo
Approved by: adrian (mentor)
Differential Revision: https://reviews.freebsd.org/D3967

urtwn(4): split *reg and *var parts (no functional change).

Submitted by: <s3erios@gmail.com>
Differential Revision: https://reviews.freebsd.org/D3775

net80211: include one copy of struct ieee80211_beacon_offsets into ieee80211vap

Submitted by: Andriy Voskoboinyk <s3erios@gmail.com>
Differential Revision: https://reviews.freebsd.org/D3658

net80211 & wireless drivers: remove duplicate defines (noop)

- IEEE80211_DIR_DSTODS(wh) -> IEEE80211_IS_DSTODS(wh).
- N(a) -> nitems(a).
- Remove LE_READ_2(p)/LE_READ_4(p) definitions (and include ieee80211_input.h instead).
- <drvname>_TXOP_TO_US(txop) -> IEEE80211_TXOP_TO_US(txop).
- Put IEEE80211_RV(v) into ieee80211_proto.h and remove local RV(v) definitions.

Submitted by: Andriy Voskoboinyk <s3erios@gmail.com>
Differential Revision: https://reviews.freebsd.org/D3705

Correct setting R92C_TDECTRL_BLK_DESC_NUM_M bit.

Replay r286410. Change KPI of how device drivers that provide wireless
connectivity interact with the net80211 stack.

Historical background: originally wireless devices created an interface,
just like Ethernet devices do. Name of an interface matched the name of
the driver that created. Later, wlan(4) layer was introduced, and the
wlanX interfaces become the actual interface, leaving original ones as
"a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer
and a driver became a mix of methods that pass a pointer to struct ifnet
as identifier and methods that pass pointer to struct ieee80211com. From
user point of view, the parent interface just hangs on in the ifconfig
list, and user can't do anything useful with it.

Now, the struct ifnet goes away. The struct ieee80211com is the only
KPI between a device driver and net80211. Details:

- The struct ieee80211com is embedded into drivers softc.
- Packets are sent via new ic_transmit method, which is very much like
the previous if_transmit.
- Bringing parent up/down is done via new ic_parent method, which notifies
driver about any changes: number of wlan(4) interfaces, number of them
in promisc or allmulti state.
- Device specific ioctls (if any) are received on new ic_ioctl method.
- Packets/errors accounting are done by the stack. In certain cases, when
driver experiences errors and can not attribute them to any specific
interface, driver updates ic_oerrors or ic_ierrors counters.

Details on interface configuration with new world order:
- A sequence of commands needed to bring up wireless DOESN"T change.
- /etc/rc.conf parameters DON'T change.
- List of devices that can be used to create wlan(4) interfaces is
now provided by net.wlan.devices sysctl.

Most drivers in this change were converted by me, except of wpi(4),
that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing
changes to at least 8 drivers. Thanks to pluknet@, Oliver Hartmann,
Olivier Cochard, gjb@, mmoll@, op@ and lev@, who also participated in
testing.

Reviewed by: adrian
Sponsored by: Netflix
Sponsored by: Nginx, Inc.

Revert the wifi ifnet changes until things are more baked and tested.

* 286410
* 286413
* 286416

The initial commit broke a variety of debug and features that aren't
in the GENERIC kernels but are enabled in other platforms.

Change KPI of how device drivers that provide wireless connectivity interact
with the net80211 stack.

Historical background: originally wireless devices created an interface,
just like Ethernet devices do. Name of an interface matched the name of
the driver that created. Later, wlan(4) layer was introduced, and the
wlanX interfaces become the actual interface, leaving original ones as
"a parent interface" of wlanX. Kernelwise, the KPI between net80211 layer
and a driver became a mix of methods that pass a pointer to struct ifnet
as identifier and methods that pass pointer to struct ieee80211com. From
user point of view, the parent interface just hangs on in the ifconfig
list, and user can't do anything useful with it.

Now, the struct ifnet goes away. The struct ieee80211com is the only
KPI between a device driver and net80211. Details:

- The struct ieee80211com is embedded into drivers softc.
- Packets are sent via new ic_transmit method, which is very much like
the previous if_transmit.
- Bringing parent up/down is done via new ic_parent method, which notifies
driver about any changes: number of wlan(4) interfaces, number of them
in promisc or allmulti state.
- Device specific ioctls (if any) are received on new ic_ioctl method.
- Packets/errors accounting are done by the stack. In certain cases, when
driver experiences errors and can not attribute them to any specific
interface, driver updates ic_oerrors or ic_ierrors counters.

Details on interface configuration with new world order:
- A sequence of commands needed to bring up wireless DOESN"T change.
- /etc/rc.conf parameters DON'T change.
- List of devices that can be used to create wlan(4) interfaces is
now provided by net.wlan.devices sysctl.

Most drivers in this change were converted by me, except of wpi(4),
that was done by Andriy Voskoboinyk. Big thanks to Kevin Lo for testing
changes to at least 8 drivers. Thanks to Olivier Cochard, gjb@, mmoll@,
op@ and lev@, who also participated in testing. Details here:

https://wiki.freebsd.org/projects/ifnet/net80211

Still, drivers: ndis, wtap, mwl, ipw, bwn, wi, upgt, uath were not
tested. Changes to mwl, ipw, bwn, wi, upgt are trivial and chances
of problems are low. The wtap wasn't compilable even before this change.
But the ndis driver is complex, and it is likely to be broken with this
commit. Help with testing and debugging it is appreciated.

Differential Revision: D2655, D2740
Sponsored by: Nginx, Inc.
Sponsored by: Netflix

- Fix a wrong R92C_USTIME_TSF register definition
- Fix intitial transmit rate to an 11g rate for the RTL8188EU
- Add a comment about response rate settings

Add preliminary support for the Realtek RTL8188EUS and RTL8188ETV chipsets.

Committed over the TP-LINK TL-WN725N v2 (RTL8188EUS) on amd64 with WPA.

Similar to r246614, fix panic on removing urtwn(4). It happens because
nodes are freed after the adapter is gone.

Fix alignment of USB WLAN radiotap headers. This makes USB WLAN adapters
work on ARM, MIPS and similar platforms, where alignment matters.

MFC after: 1 week
Reported by: XiaoQI Ge <ghw@7axu.com>

Import Kevin Lo's port of urtwn(4) from OpenBSD. urtwn(4) is a driver for the
Realtek RTL8188CU/RTL8192CU USB IEEE 802.11b/g/n wireless cards.
This driver requires microcode which is available in FreeBSD ports:
net/urtwn-firmware-kmod.

Hiren ported the urtwn(4) man page from OpenBSD and Glen just commited a port
for the firmware.

TODO:
- 802.11n support
- Stability fixes - the driver can sustain lots of traffic but has trouble
coping with simultaneous iperf sessions.
- fix debugging

MFC after: 2 months
Tested by: kevlo, hiren, gjb