tx_msg_t
size = nmsgs * sizeof (tx_msg_t);
KMEM_FREE(tx_msg_ring, sizeof (tx_msg_t) * tx_ring_p->tx_ring_size);
size = nmsgs * sizeof (tx_msg_t);
KMEM_FREE(tx_msg_ring, sizeof (tx_msg_t) * tx_ring_p->tx_ring_size);