DESC_NEEDED
fm10k_maybe_stop_tx(tx_ring, DESC_NEEDED);
#define TX_WAKE_THRESHOLD min_t(u16, FM10K_MIN_TXD - 1, DESC_NEEDED * 2)
#define TX_WAKE_THRESHOLD ((s16)(DESC_NEEDED * 2))
i40e_maybe_stop_tx(tx_ring, DESC_NEEDED);
iavf_maybe_stop_tx(tx_ring, DESC_NEEDED);
#define TX_WAKE_THRESHOLD ((s16)(DESC_NEEDED * 2))
ice_maybe_stop_tx(tx_ring, DESC_NEEDED);
#define TX_WAKE_THRESHOLD ((s16)(DESC_NEEDED * 2))
igb_maybe_stop_tx(tx_ring, DESC_NEEDED);
igb_maybe_stop_tx(tx_ring, DESC_NEEDED);
#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
igc_maybe_stop_tx(tx_ring, DESC_NEEDED);
#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED);
#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)
ixgbevf_maybe_stop_tx(tx_ring, DESC_NEEDED);
wx_maybe_stop_tx(tx_ring, DESC_NEEDED);
#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2)