ice_prot_hdr
u8 offs[sizeof(union ice_prot_hdr)];
union ice_prot_hdr h_u; /* Header values */
u16 h_raw[sizeof(union ice_prot_hdr) / sizeof(u16)];
union ice_prot_hdr m_u; /* Mask of header values to match */
u16 m_raw[sizeof(union ice_prot_hdr) / sizeof(u16)];