IXGBE_TAF_ASM_PAUSE
reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
reg_cu |= IXGBE_TAF_ASM_PAUSE;
reg_cu |= IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE;
IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);