mac80211: handle power constraint and country IEs in RRM (a5fee9cb) · Commits · 戴 / test

In beacons, handle the Country IE even if no Power Constraint IE is present, and, capability wise, also in case that the Radio Measurements capability is enabled. In cases where the Country IE should be handled and that the Power Constraint IE is not present, the Country IE alone will set the power limit (and not both Country and Power Constraint IEs). Signed-off-by:

Moshe Benji <moshe.benji@intel.com> Signed-off-by:

Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:

Johannes Berg <johannes.berg@intel.com>

net/mac80211/mlme.c

+8 −4

Original line number	Diff line number	Diff line
		@@ -1287,8 +1287,11 @@ ieee80211_find_80211h_pwr_constr(struct ieee80211_sub_if_data *sdata,
		country_ie_len -= 3;
		}

		if (have_chan_pwr)
		if (have_chan_pwr && pwr_constr_elem)
		pwr_reduction = pwr_constr_elem;
		else
		*pwr_reduction = 0;

		return have_chan_pwr;
		}

		@@ -1317,10 +1320,11 @@ static u32 ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
		int chan_pwr = 0, pwr_reduction_80211h = 0;
		int pwr_level_cisco, pwr_level_80211h;
		int new_ap_level;
		__le16 capab = mgmt->u.probe_resp.capab_info;

		if (country_ie && pwr_constr_ie &&
		mgmt->u.probe_resp.capab_info &
		cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT)) {
		if (country_ie &&
		(capab & cpu_to_le16(WLAN_CAPABILITY_SPECTRUM_MGMT) \|\|
		capab & cpu_to_le16(WLAN_CAPABILITY_RADIO_MEASURE))) {
		has_80211h_pwr = ieee80211_find_80211h_pwr_constr(
		sdata, channel, country_ie, country_ie_len,
		pwr_constr_ie, &chan_pwr, &pwr_reduction_80211h);

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