CFT: WPA(WPA-None) in IBSS(ahdoc) mode

[Bernhard Schmidt]

Hi,

it seems there is demand for WPA-None support (at least there is a PR,
and I've been ask about it), so, I went ahead and implemented it.

I've done tests with 3 clients using attached wpa_supplicant.conf and
couldn't find any kind of issues/regressions.

Summary of the changes:

- WPA-None requires ap_scan=2:
  The major difference between ap_scan=1 (default) and 2 is, that no
  IEEE80211_IOC_SCAN* ioctls/functions are called, though, there is a
  dependency on those.  For example the call to wpa_driver_bsd_scan()
  sets the interface UP, this never happens, therefore the interface
  must be marked up in wpa_driver_bsd_associate().  IEEE80211_IOC_SSID
  also is not called, which means that the SSID has not been set prior
  to the IEEE80211_MLME_ASSOC call.

- WPA-None has no support for sequence number updates, it doesn't make
  sense to check for replay violations..

- I had some crashes right after the switch to RUN state, issue is
  that sc->sc_lastrs was not yet defined.

-- 
Bernhard
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ap_scan=2

network={
	ssid="wpanone"
	mode=1
	key_mgmt=WPA-NONE
	proto=WPA
	pairwise=NONE
	group=CCMP
	psk="testtest"
}