ETHTOOL_A_PHY_HEADER
extern const struct nla_policy ethnl_phy_get_policy[ETHTOOL_A_PHY_HEADER + 1];
.hdr_attr = ETHTOOL_A_PHY_HEADER,
const struct nla_policy ethnl_phy_get_policy[ETHTOOL_A_PHY_HEADER + 1] = {
[ETHTOOL_A_PHY_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy),
phydev = ethnl_req_get_phydev(req_info, tb, ETHTOOL_A_PHY_HEADER,