MVNETA_TXD_Z_PAD
tx_desc->command |= MVNETA_TXD_L_DESC | MVNETA_TXD_Z_PAD;
tx_desc->command = MVNETA_TXD_L_DESC | MVNETA_TXD_Z_PAD;
#define MVNETA_TXD_FLZ_DESC (MVNETA_TXD_Z_PAD | \