LinuxKPI: 802.11: add struct/fields and functions for v7.0

Add 802.11 struct fields and functions support for Linux v7.0 based
wireless drivers (at least iwlwifi, rtw88, rtw89).

While here cleanup

LinuxKPI: 802.11: add struct/fields and functions for v7.0

Add 802.11 struct fields and functions support for Linux v7.0 based
wireless drivers (at least iwlwifi, rtw88, rtw89).

While here cleanup some other bits.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days

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LinuxKPI: 802.11: Add structures and functions for NAN support

In Linux v7.0 iwlwifi(4) started to add support for Wi-Fi Aware(tm)
also known as Neighbor Awareness Networking (NAN).

Add structures

LinuxKPI: 802.11: Add structures and functions for NAN support

In Linux v7.0 iwlwifi(4) started to add support for Wi-Fi Aware(tm)
also known as Neighbor Awareness Networking (NAN).

Add structures and fields for this as needed so far to keep the driver
compiling. net80211 has no support for it as a new mode.

We may consider a dedicated header file for these parts in the future
depending on how much more is to come.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days

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LinuxKPI: 802.11: improve emulate chanctx implementation

Now that all dependencies are implemented improve our chanctx emulation.
Some drivers still rely on chandef information for channel work.

In

LinuxKPI: 802.11: improve emulate chanctx implementation

Now that all dependencies are implemented improve our chanctx emulation.
Some drivers still rely on chandef information for channel work.

In order to only do chanctx updates within mac80211 in Linux and
likewise in the LinuxKPI 802.11 compat layer, emulation functions
were introduced which claim to support chanctx driver operation but
in reality convert these to chandef field updates and (*config)
downcalls.

This is relevant to several mt76 chipsets (at least 7615, 7915),
and rtw88 and certain rtw89 chipsets (8851b, and the ones not supporting
SCAN_OFFLOAD or BEACON_FILTER) for us.

Migrate the logic out of the header and improve it.

Make use of the introduced dflt_chandef and scan_chandef fields,
add comparison of chandefs to see if we have to update, etc.

Also add strict checks for driver settings in linuxkpi_ieee80211_alloc_hw()
to make sure all preconditions are correctly met. Store the result
if we are using the emulation functions in a field, so we can later
check on it and also leave a note to the users if emulation is used
in order to improve debugging on possible problem reports.

Use the new field that we use emulation in lkpi_ic_set_channel() instead
of a hand crafted check.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days
Fixes: ac1d519c01ca8 ("LinuxKPI: 802.11: adjustments for v6.11..")

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LinuxKPI: 802.11: improve prep_tx_info

Over time struct ieee80211_prep_tx_info has grown further fields.
One which is becoming mandatory is the subtype (of the mgmt frame).
iwlwifi(mld) has a WARN f

LinuxKPI: 802.11: improve prep_tx_info

Over time struct ieee80211_prep_tx_info has grown further fields.
One which is becoming mandatory is the subtype (of the mgmt frame).
iwlwifi(mld) has a WARN for it if it does not match, so we now have
to set this for proper operation. In addition we are tyring to improve
the situation of setting/unsetting (prepare_tx/complete_tx) in various
states and cleanup the use of other fields but link_id which we now
leave as a marker for the future everywhere.
The general problem we are facing is that our hook surface in this case
is the state machine but likely would have to be tx/rx mgmt frames but
we would alos have to driver the TX queues from there which is tricky.
The long-term answer is to change net80211.

Further the hardware flag DEAUTH_NEED_MGD_TX_PREP is dead and was
removed again in favour of leting drivers deal with it. iwlwifi(mvm)
likely being the only driver which ever used this.

Sponsored by: The FreeBSD Foundation
MFC after: 3 days

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