compat_ethtool_rxnfc
const struct compat_ethtool_rxnfc __user *useraddr,
struct compat_ethtool_rxnfc crxnfc = {};
sizeof(struct compat_ethtool_rxnfc) !=
BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) +
BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) -
offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) !=
struct compat_ethtool_rxnfc crxnfc;
crxnfc = (struct compat_ethtool_rxnfc) {
useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs);