iwm_rx_phy_info
int iwm_get_signal_strength(struct iwm_softc *, struct iwm_rx_phy_info *);
iwm_get_signal_strength(struct iwm_softc *sc, struct iwm_rx_phy_info *phy_info)
struct iwm_rx_phy_info *phy_info = (void *)pkt->data;
struct iwm_rx_phy_info *phy_info;
struct iwm_rx_phy_info sc_last_phy_info;