ieee80211_setup_rates
int ieee80211_setup_rates(ieee80211_node_t *, const uint8_t *,
rate = ieee80211_setup_rates(in, rates, xrates,
rate = ieee80211_setup_rates(in, rates, xrates,
(void) ieee80211_setup_rates(in, sp->rates, sp->xrates,
(void) ieee80211_setup_rates(in, sp->rates, sp->xrates,