mt76x2: fall back to software crypto for IBSS/Mesh per-sta GTK

Signed-off-by: Felix Fietkau <nbd@nbd.name>
openwrt · Mar 17, 2017 · 9f02db7 · 9f02db7
1 parent c91e660
commit 9f02db7
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/mt76x2_main.c b/mt76x2_main.c
@@ -327,6 +327,17 @@ mt76x2_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	int idx = key->keyidx;
 	int ret;
 
+	/*
+	 * The hardware does not support per-STA RX GTK, fall back
+	 * to software mode for these.
+	 */
+	if ((vif->type == NL80211_IFTYPE_ADHOC ||
+	     vif->type == NL80211_IFTYPE_MESH_POINT) &&
+	    (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
+	     key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
+	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
+		return -EOPNOTSUPP;
+
 	msta = sta ? (struct mt76x2_sta *) sta->drv_priv : NULL;
 	wcid = msta ? &msta->wcid : &mvif->group_wcid;