FCT
#define THIS_IS_ELF(X) (FCT(X) == &elf_fct)
#define THIS_IS_NOT_ELF(X) (FCT(X) != &elf_fct)
(FCT(lmp) == &elf_fct) &&
FCT(lmp) = &elf_fct;
E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE);