use negotiated short gi to calculate the tx rate; using the htcaps
does not take into account local state (e.g. manual disable of sgi)

iv_flags_ext is full, make room by moving HT-related flags to a new
iv_flags_ht word

Resync with head.

o station mode channel switch support
o IEEE80211_IOC_CHANSWITCH fixups:
- restrict to hostap vaps
- return EOPNOTSUPP instead of EINVAL when applied to !hostap vap
or to a vap w/o 11h enable

o station mode channel switch support
o IEEE80211_IOC_CHANSWITCH fixups:
- restrict to hostap vaps
- return EOPNOTSUPP instead of EINVAL when applied to !hostap vap
or to a vap w/o 11h enabled
- interpret count of 0 to mean cancel the current CSA

Reviewed by: rpaulo, avatar

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Resync with head.

fix typo

Remove hack used to deal with ifnet teardown now that if_detach and the
bridge do a better job.
o move ether_ifdetach to the top of ieee80211_detach
o do not clear if_softc at the top of ieee80211_de

Remove hack used to deal with ifnet teardown now that if_detach and the
bridge do a better job.
o move ether_ifdetach to the top of ieee80211_detach
o do not clear if_softc at the top of ieee80211_detach; we no longer need
this because we are safeguarded against calls coming back through if_ioctl
o simplify the bpf tracker now that we don't null if_softc

This also fixes an issue where having a bpf consumer active when a vap
is destroyed would cause a crash because bpf referenced free'd memory.

Reviewed by: imp

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Merge from HEAD

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

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

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add IEEE80211_FEXT_4ADDR to indicate ieee80211_encap should do 4-address
encapsulation when relaying frames; this reduces the cost of the test and
enables use for situations other than "sta vap + dwd

add IEEE80211_FEXT_4ADDR to indicate ieee80211_encap should do 4-address
encapsulation when relaying frames; this reduces the cost of the test and
enables use for situations other than "sta vap + dwds"

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correct bssid reporting for wds vaps

- Merge from HEAD

o add ic_rt to track the rate table for the current channel; this enables
calculation of packet transmit times to do things like check txop limits
o remove equivalent driver code and convert to use

o add ic_rt to track the rate table for the current channel; this enables
calculation of packet transmit times to do things like check txop limits
o remove equivalent driver code and convert to use net80211 state

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split Atheros SuperG support out into it's own file that's included only
with a new IEEE80211_SUPPORT_SUPERG option

add linker sets for get/set ioctl handlers so optional net80211
code is isolated

Update the projects tree to a newer FreeBSD current.

Add modes for 1/2 and 1/4-width channels so we have separate roaming
and xmit parameters. This makes it possible to use tdma on fractional
channels.
o add IEEE80211_MODE_HALF and IEEE80211_MODE_QUAR

Add modes for 1/2 and 1/4-width channels so we have separate roaming
and xmit parameters. This makes it possible to use tdma on fractional
channels.
o add IEEE80211_MODE_HALF and IEEE80211_MODE_QUARTER; note these are
band-agnostic (may need revisiting)
o setup all default rates in ic_sup_rates instead of doing it only
for active modes; we need these to calculate the default tx parameters
which are not recalculated after a regulatory update (can't just
recalculate after installing a new channel list because we might
clobber user settings)
o remove special case code in ieee80211_get_suprates; this is now
a candidate for an inline or removal
o add various entries for new modes (roaming+tx params, wme, rate
mapping, scan set setup, country ie construction, tdma, basic rates)

Note these modes are intentionally not visible through if_media.

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o looseen abi dependencies on IEEE80211_MODE_MAX by accepting smaller
parameters for IEEE80211_IOC_ROAM and IEEE80211_IOC_TXPARAMS; this
lets us add more modes and still have old apps work
o cons

o looseen abi dependencies on IEEE80211_MODE_MAX by accepting smaller
parameters for IEEE80211_IOC_ROAM and IEEE80211_IOC_TXPARAMS; this
lets us add more modes and still have old apps work
o consolidate loops to remote assumptions about mode ordering

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use c99 initializers

instead of special casing lookups for the 11na/g legacy rate set, just
install the rates once when creating the com structure

Add a ieee80211_waitfor_parent() function that will wait for all deferred
parent interface tasks to complete. This had been added to the ioctl path but
it is also need elsewhere like detach so its sa

Add a ieee80211_waitfor_parent() function that will wait for all deferred
parent interface tasks to complete. This had been added to the ioctl path but
it is also need elsewhere like detach so its safe to teardown.

Reported by: Hans Petter Selasky
Submitted by: sam

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add an assert to verify the number of channels returned by ic_getradiocaps
correlates with the size of the channel array passed down

might want to promote this to be always present to catch for driv

add an assert to verify the number of channels returned by ic_getradiocaps
correlates with the size of the channel array passed down

might want to promote this to be always present to catch for driver errors

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Remove assumptions about the max # channels in ioctl's:
o change ioctl's that pass channel lists in/out to handle variable-size
arrays instead of a fixed (compile-time) value; we do this in a way

Remove assumptions about the max # channels in ioctl's:
o change ioctl's that pass channel lists in/out to handle variable-size
arrays instead of a fixed (compile-time) value; we do this in a way
that maintains binary compatibility
o change ifconfig so all channel list data structures are now allocated
to hold MAXCHAN entries (1536); this, for example, allows the kernel
to return > IEEE80211_CHAN_MAX entries for calls like IEEE80211_IOC_DEVCAPS

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change ic_getradiocaps driver callback to include the max # channels
so callers know the size of the array passed down

If the parent up/down task was queued then sync with it before returning from
the vap ioctl. This means that the parent interface should hopefully be up
before we return to userland, it does not depe

If the parent up/down task was queued then sync with it before returning from
the vap ioctl. This means that the parent interface should hopefully be up
before we return to userland, it does not depend on the parent init succeeding,
just that it was run.

This fixes wpa_supplicant with ndis and USB where the parent interfaces can be
slow to init.

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