Function sta_recv_mgmt

freebsd/net80211/ieee80211_sta.c:1384–2041

#endif

static void
sta_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
    const struct ieee80211_rx_stats *rxs,
    int rssi, int nf)
{
#define	ISREASSOC(_st)	((_st) == IEEE80211_FC0_SUBTYPE_REASSOC_RESP)
	struct ieee80211vap *vap = ni->ni_vap;
	struct ieee80211com *ic = ni->ni_ic;
	struct ieee80211_channel *rxchan = ic->ic_curchan;
	struct ieee80211_frame *wh;
	int ht_state_change = 0, do_ht = 0;
	uint8_t *frm, *efrm;
	uint8_t *rates, *xrates, *wme, *htcap, *htinfo;
	uint8_t *vhtcap, *vhtopmode;
	uint8_t rate;
	uint8_t qosinfo;

	wh = mtod(m0, struct ieee80211_frame *);
	frm = (uint8_t *)&wh[1];
	efrm = mtod(m0, uint8_t *) + m0->m_len;
	switch (subtype) {
	case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
	case IEEE80211_FC0_SUBTYPE_BEACON: {
		struct ieee80211_scanparams scan;
		struct ieee80211_channel *c;
		/*
		 * We process beacon/probe response frames:
		 *    o when scanning, or
		 *    o station mode when associated (to collect state
		 *      updates such as 802.11g slot time)
		 * Frames otherwise received are discarded.
		 */ 
		if (!((ic->ic_flags & IEEE80211_F_SCAN) || ni->ni_associd)) {
			vap->iv_stats.is_rx_mgtdiscard++;
			return;
		}

		/* Override RX channel as appropriate */
		if (rxs != NULL) {
			c = ieee80211_lookup_channel_rxstatus(vap, rxs);
			if (c != NULL)
				rxchan = c;
		}

		/* XXX probe response in sta mode when !scanning? */
		if (ieee80211_parse_beacon(ni, m0, rxchan, &scan) != 0) {
			if (! (ic->ic_flags & IEEE80211_F_SCAN))
				vap->iv_stats.is_beacon_bad++;
			return;
		}

		/*
		 * Count frame now that we know it's to be processed.
		 */
		if (subtype == IEEE80211_FC0_SUBTYPE_BEACON) {
			vap->iv_stats.is_rx_beacon++;		/* XXX remove */
			IEEE80211_NODE_STAT(ni, rx_beacons);
		} else