+static int phy_list_fill_reply(struct sk_buff *skb,
+			       const struct ethnl_req_info *req_base,
+			       const struct ethnl_reply_data *reply_base)
+{
+	const struct phy_list_reply_data *data = PHY_LIST_REPDATA(reply_base);
+
+	if (nla_put_u8(skb, ETHTOOL_A_PHY_LIST_COUNT, data->n_phys))
+		return -EMSGSIZE;
+
+	if (!data->n_phys)
+		return 0;
+
+	if (nla_put(skb, ETHTOOL_A_PHY_LIST_INDEX, sizeof(u32) * data->n_phys,
+		    data->phy_indices))
+		return -EMSGSIZE;
+

Can we add additional information here to allow mapping to what is
under /sys ? A PHY has an struct device, so has a name. So maybe that
can be included?

	Andrew