ethtool_ah_espip4_spec
struct ethtool_ah_espip4_spec *ah_esp_hdr = &fsp->h_u.ah_ip4_spec;
struct ethtool_ah_espip4_spec *ah_esp_mask = &fsp->m_u.ah_ip4_spec;
struct ethtool_ah_espip4_spec ah_ip4_spec;
struct ethtool_ah_espip4_spec esp_ip4_spec;
struct ethtool_ah_espip4_spec ah_ip4_spec;
struct ethtool_ah_espip4_spec esp_ip4_spec;