mac_ring_tx
mpsend = mac_ring_tx(blpsend->bl_mh, NULL,
mpsend = mac_ring_tx(blpsend->bl_mh, NULL, mpsend);
mp = mac_ring_tx(blp->bl_mh, rh, mpnext);
mp = mac_ring_tx(blp->bl_mh, rh, mp);
mp = mac_ring_tx(blp->bl_mh, NULL, mp);
mp = mac_ring_tx(blp->bl_mh, NULL, mp);
mp = mac_ring_tx((mac_handle_t)mip, rh, mp);
return (mac_ring_tx((mac_handle_t)mip, rh, mp));
extern mblk_t *mac_ring_tx(mac_handle_t, mac_ring_handle_t, mblk_t *);