IEEE80211_REGDOMAIN_SIZE
req = malloc(IEEE80211_REGDOMAIN_SIZE(dc->dc_chaninfo.ic_nchans));
IEEE80211_MALLOC(IEEE80211_REGDOMAIN_SIZE(nchans), M_TEMP,
error = copyin(ireq->i_data, reg, IEEE80211_REGDOMAIN_SIZE(nchans));
IEEE80211_REGDOMAIN_SIZE((_req)->chaninfo.ic_nchans)
regdomain = malloc(IEEE80211_REGDOMAIN_SIZE(wif->nchannels));
memset(regdomain, 0, IEEE80211_REGDOMAIN_SIZE(wif->nchannels));
argsize = IEEE80211_REGDOMAIN_SIZE(wif->nchannels);