EHT/802.11be introduced both wider-bandwidth OFDMA and puncturing, and we forgot completely about the former, and misimplemented the latter due to my wrong arguments. As mentioned earlier, puncturing really should have been in the chandef, which this moves it to. Earlier, the series implements wider bandwidth OFDMA support in mac80211, which requires tracking the AP channel as part of the channel context, and then declaring them to be incompatible if EHT is used on two interfaces (and thus there might be OFDMA) if the AP bandwidth differs. As part of the refactoring to more clearly determine both local and AP mode (HT/VHT/HE/EHT) and channel configuration, this makes mac80211 a bit more strict: - no longer accept channel switch when the mode changes - no longer use e.g. VHT if the HT channel inside of it occupies the wrong spot (e.g. center 40 MHz inside 80 MHz) - don't use EHT with bad puncturing (punctured subchannels cover subchannels that are used by HE) Hopefully these things won't really break anything outside of a handful of hostapd tests seem misconfigured (e.g johannes
