Symbol: wpi_tx_ring_free_space
sys/dev/wpi/if_wpi.c
3085
if (sc->sc_running == 0 || wpi_tx_ring_free_space(sc, ac) < 1) {
sys/dev/wpi/if_wpi.c
3142
if (wpi_tx_ring_free_space(sc, ac) < nmbufs) {