> This patch removes VHT Capabilities/Operation IEs when the > wpa_supplicant.conf includes disable_vht=1. We recognize the local > peer > as 11ac ready, when it has more than 80MHz band width. Because > net/mac80211/util.c#ieee80211_build_preq_ies_band() uses 80MHz > threshold > for VHT Capabilities IE inclusion.
I believe this is incorrect the way you've written it, we shouldn't disable VHT because 80 MHz isn't *used* right now. The code you reference checks if 80 MHz was technically *supported*, and that's really only because we otherwise can't connect to a BSS network that supports VHT, since the AP might switch from 20/40 to 80/160, and we can't say that we don't support 80 (since we have to support it if we support VHT.) > sband = local->hw.wiphy->bands[band]; > if (!sband->vht_cap.vht_supported || > - sdata->vif.bss_conf.chandef.width == > NL80211_CHAN_WIDTH_20_NOHT || > - sdata->vif.bss_conf.chandef.width == > NL80211_CHAN_WIDTH_5 || > - sdata->vif.bss_conf.chandef.width == > NL80211_CHAN_WIDTH_10) > + !(sdata->vif.bss_conf.chandef.width == > NL80211_CHAN_WIDTH_80 || > + sdata->vif.bss_conf.chandef.width == > NL80211_CHAN_WIDTH_80P80 || > + sdata->vif.bss_conf.chandef.width == > NL80211_CHAN_WIDTH_160)) > return 0; > But using the current bandwidth as you do now seems incorrect to me. johannes
