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diff --git a/sys/net80211/ieee80211_vht.h b/sys/net80211/ieee80211_vht.h
--- a/sys/net80211/ieee80211_vht.h
+++ b/sys/net80211/ieee80211_vht.h
@@ -50,6 +50,8 @@
uint8_t * ieee80211_add_vhtcap(uint8_t *frm, struct ieee80211_node *);
uint8_t * ieee80211_add_vhtinfo(uint8_t *frm, struct ieee80211_node *);
+uint8_t *ieee80211_add_vhtcap_ch(uint8_t *, struct ieee80211vap *,
+ struct ieee80211_channel *);
void ieee80211_vht_update_cap(struct ieee80211_node *,
const uint8_t *, const uint8_t *);
diff --git a/sys/net80211/ieee80211_vht.c b/sys/net80211/ieee80211_vht.c
--- a/sys/net80211/ieee80211_vht.c
+++ b/sys/net80211/ieee80211_vht.c
@@ -707,6 +707,33 @@
return (frm);
}
+/*
+ * Non-associated probe requests. Add VHT capabilities based on
+ * the current channel configuration. No BSS yet.
+ */
+uint8_t *
+ieee80211_add_vhtcap_ch(uint8_t *frm, struct ieee80211vap *vap,
+ struct ieee80211_channel *c)
+{
+ struct ieee80211_vht_cap *vhtcap;
+
+ memset(frm, 0, 2 + sizeof(*vhtcap));
+ frm[0] = IEEE80211_ELEMID_VHT_CAP;
+ frm[1] = sizeof(*vhtcap);
+ frm += 2;
+
+ /* 32-bit VHT capability */
+ ADDWORD(frm, vap->iv_vht_cap.vht_cap_info);
+
+ /* supp_mcs */
+ ADDSHORT(frm, vap->iv_vht_cap.supp_mcs.rx_mcs_map);
+ ADDSHORT(frm, vap->iv_vht_cap.supp_mcs.rx_highest);
+ ADDSHORT(frm, vap->iv_vht_cap.supp_mcs.tx_mcs_map);
+ ADDSHORT(frm, vap->iv_vht_cap.supp_mcs.tx_highest);
+
+ return (frm);
+}
+
static uint8_t
ieee80211_vht_get_chwidth_ie(struct ieee80211_channel *c)
{

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