Merge from head

IFC @ r254014

IFC @ r253862

- change the SI_SUB_RUN_SCHEDULER sysinits in hv_utilc and
hv_netvsc_drv_freebsd.c to SI_SUB_KTHREAD_IDLE, since the
former is no longer in FreeBSD.
The use of these SYSINITs can pro

IFC @ r253862

- change the SI_SUB_RUN_SCHEDULER sysinits in hv_utilc and
hv_netvsc_drv_freebsd.c to SI_SUB_KTHREAD_IDLE, since the
former is no longer in FreeBSD.
The use of these SYSINITs can probably be removed.

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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>

Merge fresh head.

sync from head

IFC @247348.

- 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 red

- 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 after: 2 weeks

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Sync with HEAD.

IFC @ r244983.

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

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 after: 1 week
Suggested by: imp

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MFC r203087

adds sysctl knobs to show rate statistics that it could be useful to
debug slow TX speed.

IFH@204581

adds sysctl knobs to show rate statistics that it could be useful to
debug slow TX speed.

MFC r197761,r198194,r198862

updates device entries supported with the product name not magic numbers
and sorts entries. WUSB54GCV2 is added.

overhauls urtw(4) for supporting RTL8187B devices pr

MFC r197761,r198194,r198862

updates device entries supported with the product name not magic numbers
and sorts entries. WUSB54GCV2 is added.

overhauls urtw(4) for supporting RTL8187B devices properly that there
was major changes to initialize RF chipset and set H/W registers and
removed a lot of magic numbers on code.

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MFC @199204

overhauls urtw(4) for supporting RTL8187B devices properly that there
was major changes to initialize RF chipset and set H/W registers and
removed a lot of magic numbers on code. Details are as foll

overhauls urtw(4) for supporting RTL8187B devices properly that there
was major changes to initialize RF chipset and set H/W registers and
removed a lot of magic numbers on code. Details are as follows:

- uses the endpoint 0x89 to get TX status information which used to
get TX complete or retry numbers or get a beacon interrupt. It's
only valuable for RTL8187B.
- removes urtw_write[8|16|32]_i functions that it's useless now.
- uses ic->ic_updateslot to set SLOT, SIFS, DIES, EIFS, CW_VAL
registers that doesn't set these whenever the channel is changed.
- code for initializing RF chipset for RTL8187B changed a lot that
there was many problems on TX transfers so it doesn't work properly
even if just for a ping/pong. Now it becomes more stable than
before that TX throughputs using netperf(1) were about 15 ~ 17Mbps/s
though sometimes it encounters packet losses.
- removes a lot of magic numbers that in the previous all of
representing RX and TX descriptors were consisted of magic numbers
and structures. It'd be more readable rather than before.
- calculates TX duration more accurately for urtw(4) devices.
- style(9)

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Merge from head

- Merge from HEAD

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

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

ports urtw(4) for USB2. Additionally it supports a 8187B chipset weakly
that it needs more stabilization.

adds sysctl knobs to show rate statistics that it could be useful to
debug slow TX speed.

MFC @199204

overhauls urtw(4) for supporting RTL8187B devices properly that there
was major changes to initialize RF chipset and set H/W registers and
removed a lot of magic numbers on code. Details are as foll

overhauls urtw(4) for supporting RTL8187B devices properly that there
was major changes to initialize RF chipset and set H/W registers and
removed a lot of magic numbers on code. Details are as follows:

- uses the endpoint 0x89 to get TX status information which used to
get TX complete or retry numbers or get a beacon interrupt. It's
only valuable for RTL8187B.
- removes urtw_write[8|16|32]_i functions that it's useless now.
- uses ic->ic_updateslot to set SLOT, SIFS, DIES, EIFS, CW_VAL
registers that doesn't set these whenever the channel is changed.
- code for initializing RF chipset for RTL8187B changed a lot that
there was many problems on TX transfers so it doesn't work properly
even if just for a ping/pong. Now it becomes more stable than
before that TX throughputs using netperf(1) were about 15 ~ 17Mbps/s
though sometimes it encounters packet losses.
- removes a lot of magic numbers that in the previous all of
representing RX and TX descriptors were consisted of magic numbers
and structures. It'd be more readable rather than before.
- calculates TX duration more accurately for urtw(4) devices.
- style(9)

show more ...