txdma_mailbox_t
tx_cntl_alloc_size += sizeof (txdma_mailbox_t);
hxge_setup_dma_common(dmap, cntl_dmap, 1, sizeof (txdma_mailbox_t));
txdma_mailbox_t tx_mbox;
cr_size += sizeof (txdma_mailbox_t);
nxge_setup_dma_common(dmap, cntl_dmap, 1, sizeof (txdma_mailbox_t));
txdma_mailbox_t tx_mbox;