rt2661_vap
struct rt2661_vap *rvp;
rvp = malloc(sizeof(struct rt2661_vap), M_80211_VAP, M_WAITOK | M_ZERO);
struct rt2661_vap *rvp = RT2661_VAP(vap);
struct rt2661_vap *rvp = RT2661_VAP(vap);
#define RT2661_VAP(vap) ((struct rt2661_vap *)(vap))