Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

MFC r238274, r246752, r256720, r256721, r256722, r256955, r257409
r257429, r257435, r257712, r257732, r257743, r257748, r257955
r257957, r257958, r258082, r258641, r258643, r258732, r258733,
r258840, r258919, r258921, r259029, r259030, r259031, r259032 and r259046:

- Add support for the MediaTek/Ralink RT5370/RT5372 chipset.
- Various minor USB WLAN fixes and improvements.

PR: usb/182936

MFC r246614:
- Streamline detach logic in wlan drivers, so that
freed memory cannot be used during detach.
- Remove all panic() calls from the urtw driver because
panic() is not appropriate here.
- Remove redundant checks for device detached in
device detach callbacks.
- Use DEVMETHOD_END to mark end of device methods.

MFC r244503 and r246565:

Make sure all USB drivers allocate buffer memory
through the USB API and/or busdma.

The following assumptions have been made:
umass - buffers passed from CAM/SCSI layer are OK
network - mbufs are OK.

Some other nits while at it.

MFC: r227309 (partial)

Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.

The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.

MFC: r243857 (partial)

Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags in sys/dev.

MFC r240750, r241987 and r242126:
Add missing CTLFLAG_TUN flag to tunable sysctls in the USB stack.
Adjust timing parameters of FULL/LOW/HIGH speed USB enumeration
and make these timing parameters tunable. This patch will fix
enumeration with some USB devices.
Fix a typo.

MFC r233774:
Fix compiler warnings, mostly signed issues,
when USB modules are compiled with WARNS=9.

MFC r225941:
Fix an unaligned access issue; tidy up OFDM/DS rate decoding from the PLCP.

This fixes a panic on PPC.

Submitted by: novel
Obtained from: OpenBSD, sys/dev/ic/bwi.c r1.89

MFC r226181:
Update from OpenBSD: Include 0x4402 in the bbp id mapping table used on older devices.

http://bcm-specs.sipsolutions.net/BackPlane agrees.

Obtained from: OpenBSD, sys/dev/ic/bwi.c r1.88

MFC r226182:
Fix an incorrect use of sizeof().

Obtained from: OpenBSD sys/dev/ic/bwi.c r1.87

MFC r228621:
Fix some net80211 enum nits:
- ic_vap_create() uses an ieee80211_opmode argument
- ieee80211_rate2media() takes an ieee80211_phymode argument
- ieee80211_plcp2rate() takes an ieee80211_phytype argument
- cast to enum ieee80211_protmode and ieee80211_roamingmode to silence
compiler warnings

Submitted by: arundel@

MFC r227461:
Style change.
Use memxxx() functions instead of bxxx() functions.

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

The SMCWUSBG is a zyd(4) device, not an uath(4) device. Remove from the
latter.

It appears that the addition to uath(4) came in through PR kern/135009,
which had tested another device, the SMCWUSBTG2, successfully with uath(4)
and included the SMCWUSBG as it "has the same chipset". I can find no
other evidence that these two do actually share the same chipset. Moreover,
Linux treats the SMCWUSBG as a zyd(4) device also.

This reverts r223537.

Discussed with: hselasky, kevlo
MFC after: 1 week

- Move all USB device ID arrays into so-called sections,
sorted according to the mode which they support:
host, device or dual mode
- Add generic tool to extract these data:
tools/bus_autoconf

Discussed with: imp
Suggested by: Robert Millan <rmh@debian.org>
PR: misc/157903
MFC after: 14 days

We need to grab a node reference count to vap->iv_bss before using it as it is
possible for the node to be replaced and freed at any time by
ieee80211_sta_join1().

Add missing MODULE_VERSION() definitions, this resolves problems around
duplicate module loads.

PR: usb/125736
Submitted by: danger, mm
Reviewed by: hselasky

Add new tunable 'net.link.ifqmaxlen' to set default send interface
queue length. The default value for this parameter is 50, which is
quite low for many of today's uses and the only way to modify this
parameter right now is to edit if_var.h file. Also add read-only
sysctl with the same name, so that it's possible to retrieve the
current value.

MFC after: 1 month

Add the Netgear WPN111

removes a hack to attach TRENDnet TEW-504UB/EU that I think this issue
is solved with r202607. Now idProduct of all uath(4) devices should be
decreased after loading the firmware.

fixes a TX hang that could be possible to happen when the trasfers are
in the high speed that some drivers don't call if_start callback after
marking ~IFF_DRV_OACTIVE.

MFC after: 3 days

adds DLINK2 DWA120 device.

PR: usb/136950
Reported by: Alexander Kuznetsov <skritku at gmail.com>
Approved by: re (kib)

- Make struct usb_xfer opaque so that drivers can not access the internals
- Reduce the number of headers needed for a usb driver, the common case is just usb.h and usbdi.h

reorders the sequence when the device is detached. After detaching the
interface is completed then it'll process other parts to avoid a race
condition.

Pointed by: jhb

s/usb2_/usb_|usbd_/ on all function names for the USB stack.

s/usb2_/usb_/ on all typedefs for the USB stack.

adds new device IDs.

PR: usb/135009
Submitted by: Bill Squire <billsf at 2600.COM>

s/usb2_/usb_/ on all C structs for the USB stack.

Print out device attachment.

Rename the usb sysctl tree from hw.usb2.* back to hw.usb.*.

Submitted by: Hans Petter Selasky

- rename usb2_mode to usb_mode [1]
- change variable types to use the enum

Submitted by: Hans Petter Selasky [1]

Overhaul monitor mode handling:
o replace DLT_IEEE802_11 support in net80211 with DLT_IEEE802_11_RADIO
and remove explicit bpf support from wireless drivers; drivers now
use ieee80211_radiotap_attach to setup shared data structures that
hold the radiotap header for each packet tx/rx
o remove rx timestamp from the rx path; it was used only by the tdma support
for debugging and was mostly useless due to it being 32-bits and mostly
unavailable
o track DLT_IEEE80211_RADIO bpf attachments and maintain per-vap and
per-com state when there are active taps
o track the number of monitor mode vaps
o use bpf tap and monitor mode vap state to decide when to collect radiotap
state and dispatch frames; drivers no longer explicitly directly check
bpf state or use bpf calls to tap frames
o handle radiotap state updates on channel change in net80211; drivers
should not do this (unless they bypass net80211 which is almost always
a mistake)
o update various drivers to be more consistent/correct in handling radiotap
o update ral to include TSF in radiotap'd frames
o add promisc mode callback to wi

Reviewed by: cbzimmer, rpaulo, thompsa

try to unsetup USB xfers before calling ieee80211_ifdetach() to fix a
bug referencing a destroyed lock within TX callbacks during device
detach.

Submitted by: hps (original version)
Tested by: Lucius Windschuh <lwindschuh at googlemail.com>

add TRENDnet TEW-504UB/EU

Submitted by: Lucius Windschuh <lwindschuh@googlemail.com>

fix 11a channel use; mark OFDM operation correctly

Submitted by: Lucius Windschuh <lwindschuh@googlemail.com>

Create a taskqueue for each wireless interface which provides a serialised
sleepable context for net80211 driver callbacks. This removes the need for USB
and firmware based drivers to roll their own code to defer the chip programming
for state changes, scan requests, channel changes and mcast/promisc updates.
When a driver callback completes the hardware state is now guaranteed to have
been updated and is in sync with net80211 layer.

This nukes around 1300 lines of code from the wireless device drivers making
them more readable and less race prone.

The net80211 layer has been updated as follows
- all state/channel changes are serialised on the taskqueue.
- ieee80211_new_state() always queues and can now be called from any context
- scanning runs from a single taskq function and executes to completion. driver
callbacks are synchronous so the channel, phy mode and rx filters are
guaranteed to be set in hardware before probe request frames are
transmitted.

Help and contributions from Sam Leffler.

Reviewed by: sam

Catch up with usb2_config struct layout changes.

Add uath(4) wireless USB driver for Atheros AR5005UG and AR5005UX
chipsets.

Reviewed by: sam