rsi: set_key enhancements

Broadcast bit to be set for broadcast and multicast packets.
For remove_key, tx and rx mic need not be filled.
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/rsi/rsi_91x_mgmt.c

@@ -723,37 +723,39 @@ int rsi_hal_load_key(struct rsi_common *common,
 	memset(skb->data, 0, frame_len);
 	set_key = (struct rsi_set_key *)skb->data;
 
+	if (key_type == RSI_GROUP_KEY)
+		key_descriptor = RSI_KEY_TYPE_BROADCAST;
 	if ((cipher == WLAN_CIPHER_SUITE_WEP40) ||
 	    (cipher == WLAN_CIPHER_SUITE_WEP104)) {
-		key_len += 1;
+		key_id = 0;
 		key_descriptor |= RSI_WEP_KEY;
 		if (key_len >= 13)
 			key_descriptor |= RSI_WEP_KEY_104;
 	} else if (cipher != KEY_TYPE_CLEAR) {
 		key_descriptor |= RSI_CIPHER_WPA;
-		if (key_type == RSI_PAIRWISE_KEY)
-			key_id = 0;
 		if (cipher == WLAN_CIPHER_SUITE_TKIP)
 			key_descriptor |= RSI_CIPHER_TKIP;
 	}
-	key_descriptor |= (key_type | RSI_PROTECT_DATA_FRAMES | (key_id << 14));
+	key_descriptor |= RSI_PROTECT_DATA_FRAMES;
+	key_descriptor |= ((key_id << RSI_KEY_ID_OFFSET) & RSI_KEY_ID_MASK);
 
 	rsi_set_len_qno(&set_key->desc_dword0.len_qno,
 			(frame_len - FRAME_DESC_SZ), RSI_WIFI_MGMT_Q);
 	set_key->desc_dword0.frame_type = SET_KEY_REQ;
 	set_key->key_desc = cpu_to_le16(key_descriptor);
 
+	if (data) {
 		if ((cipher == WLAN_CIPHER_SUITE_WEP40) ||
 		    (cipher == WLAN_CIPHER_SUITE_WEP104)) {
-		memcpy(&set_key->key[key_id][1],
-		       data,
-		       key_len * 2);
+			memcpy(&set_key->key[key_id][1], data, key_len * 2);
 		} else {
 			memcpy(&set_key->key[0][0], data, key_len);
 		}
-
 		memcpy(set_key->tx_mic_key, &data[16], 8);
 		memcpy(set_key->rx_mic_key, &data[24], 8);
+	} else {
+		memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);
+	}
 
 	skb_put(skb, frame_len);