ST_RING_TX
ASSERT(softring->s_ring_state & ST_RING_TX);
ASSERT(type & ST_RING_TX);
VERIFY3U((type & ST_RING_TX), ==, 0);
VERIFY3U((type & ST_RING_TX), ==, 0);
type | ST_RING_TX, pri, mcip, mac_srs, cpuid);