Function ieee80211_sync_curchan

freebsd/net80211/ieee80211_node.c:759–776

* Check if the current channel needs to change based on whether * any vap's are using HT20/HT40. This is used to sync the state * of ic_curchan after a channel width change on a running vap. * * Same applies for VHT. */

 * Same applies for VHT.
 */
void
ieee80211_sync_curchan(struct ieee80211com *ic)
{
	struct ieee80211_channel *c;

	c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan, gethtadjustflags(ic));
	c = ieee80211_vht_adjust_channel(ic, c, getvhtadjustflags(ic));

	if (c != ic->ic_curchan) {
		ic->ic_curchan = c;
		ic->ic_curmode = ieee80211_chan2mode(ic->ic_curchan);
		ic->ic_rt = ieee80211_get_ratetable(ic->ic_curchan);
		IEEE80211_UNLOCK(ic);
		ic->ic_set_channel(ic);
		ieee80211_radiotap_chan_change(ic);
		IEEE80211_LOCK(ic);
	}
}

/*
 * Setup the current channel.  The request channel may be