Before Linux 5.7 all pre-auth frames are forwared over the nl80211 ctrl port, if it is registered. hostap and wpa_supplicant currently do not assume this behavior, as pre-auth frames should be handled as ordinary data frames in the kernel. Checking against the NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH feature flag allows us to disable this behavior later on ctrl port registration. No new capa->flags value is introduced, instead WPA_DRIVER_FLAGS_CONTROL_PORT is only set now, if this feature is present. Without this feature, only control port tx is possible without breaking pre-auth features. Signed-off-by: Markus Theil <markus.theil@xxxxxxxxxxxxx> --- src/drivers/driver_nl80211_capa.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/drivers/driver_nl80211_capa.c b/src/drivers/driver_nl80211_capa.c index b4fed9ea8..cd0ecf75d 100644 --- a/src/drivers/driver_nl80211_capa.c +++ b/src/drivers/driver_nl80211_capa.c @@ -439,7 +439,9 @@ static void wiphy_info_ext_feature_flags(struct wiphy_info_data *info, capa->flags |= WPA_DRIVER_FLAGS_FTM_RESPONDER; if (ext_feature_isset(ext_features, len, - NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) + NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211) && + ext_feature_isset(ext_features, len, + NL80211_EXT_FEATURE_CONTROL_PORT_NO_PREAUTH)) capa->flags |= WPA_DRIVER_FLAGS_CONTROL_PORT; if (ext_feature_isset(ext_features, len, -- 2.26.0 _______________________________________________ Hostap mailing list Hostap@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/hostap
