D50095.diff
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	diff --git a/sys/net80211/ieee80211_ht.c b/sys/net80211/ieee80211_ht.c
	--- a/sys/net80211/ieee80211_ht.c
	+++ b/sys/net80211/ieee80211_ht.c
	@@ -2592,6 +2592,11 @@
	return 0;
	}

	+/*
	+ * Handle the HT channel width action frame.
	+ *
	+ * 802.11-2020 9.6.11.2 (Notify Channel Width frame format).
	+ */
	static int
	ht_recv_action_ht_txchwidth(struct ieee80211_node *ni,
	const struct ieee80211_frame *wh __unused,
	@@ -2603,6 +2608,11 @@
	if ((ni->ni_htcap & IEEE80211_HTCAP_CHWIDTH40) == 0)
	return (0);

	+ /*
	+ * The supported values are either 0 (any supported width)
	+ * or 1 (HT20). 80, 160, etc MHz widths are not represented
	+ * here.
	+ */
	chw = (frm[2] == IEEE80211_A_HT_TXCHWIDTH_2040) ?
	IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20;