int ath6kl_wmi_add_del_mcast_filter_cmd(struct wmi *wmi, u8 if_idx,
					u8 *filter, bool add_filter)
{
	struct sk_buff *skb;
	struct wmi_mcast_filter_add_del_cmd *cmd;
	int ret;

	if ((filter[0] != 0x33 || filter[1] != 0x33) &&
	    (filter[0] != 0x01 || filter[1] != 0x00 ||
	    filter[2] != 0x5e || filter[3] > 0x7f)) {
		ath6kl_warn("invalid multicast filter address\n");
		return -EINVAL;
	}

	skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
	if (!skb)
		return -ENOMEM;

	cmd = (struct wmi_mcast_filter_add_del_cmd *) skb->data;
	memcpy(cmd->mcast_mac, filter, ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE);
	ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
				  add_filter ? WMI_SET_MCAST_FILTER_CMDID :
				  WMI_DEL_MCAST_FILTER_CMDID,
				  NO_SYNC_WMIFLAG);

	return ret;
}
int ath6kl_wmi_add_del_mcast_filter_cmd(struct wmi *wmi, u8 if_idx,
					u8 *filter, bool add_filter)
{
	struct sk_buff *skb;
	struct wmi_mcast_filter_add_del_cmd *cmd;
	int ret;

	if ((filter[0] != 0x33 || filter[1] != 0x33) &&
	    (filter[0] != 0x01 || filter[1] != 0x00 ||
	    filter[2] != 0x5e || filter[3] > 0x7f)) {
		ath6kl_warn("invalid multicast filter address\n");
		return -EINVAL;
	}

	skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
	if (!skb)
		return -ENOMEM;

	cmd = (struct wmi_mcast_filter_add_del_cmd *) skb->data;
	memcpy(cmd->mcast_mac, filter, ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE);
	ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
				  add_filter ? WMI_SET_MCAST_FILTER_CMDID :
				  WMI_DEL_MCAST_FILTER_CMDID,
				  NO_SYNC_WMIFLAG);

	return ret;
}