Move files to match FreeBSD layout

1 files changed, 2307 insertions, 0 deletions

diff --git a/freebsd/sys/net80211/ieee80211_hostap.c b/freebsd/sys/net80211/ieee80211_hostap.c
new file mode 100644
index 00000000..892957be
--- /dev/null
+++ b/freebsd/sys/net80211/ieee80211_hostap.c
@@ -0,0 +1,2307 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <freebsd/sys/cdefs.h>
+#ifdef __FreeBSD__
+__FBSDID("$FreeBSD$");
+#endif
+
+/*
+ * IEEE 802.11 HOSTAP mode support.
+ */
+#include <freebsd/local/opt_inet.h>
+#include <freebsd/local/opt_wlan.h>
+
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/systm.h> 
+#include <freebsd/sys/mbuf.h>   
+#include <freebsd/sys/malloc.h>
+#include <freebsd/sys/kernel.h>
+
+#include <freebsd/sys/socket.h>
+#include <freebsd/sys/sockio.h>
+#include <freebsd/sys/endian.h>
+#include <freebsd/sys/errno.h>
+#include <freebsd/sys/proc.h>
+#include <freebsd/sys/sysctl.h>
+
+#include <freebsd/net/if.h>
+#include <freebsd/net/if_media.h>
+#include <freebsd/net/if_llc.h>
+#include <freebsd/net/ethernet.h>
+
+#include <freebsd/net/bpf.h>
+
+#include <freebsd/net80211/ieee80211_var.h>
+#include <freebsd/net80211/ieee80211_hostap.h>
+#include <freebsd/net80211/ieee80211_input.h>
+#ifdef IEEE80211_SUPPORT_SUPERG
+#include <freebsd/net80211/ieee80211_superg.h>
+#endif
+#include <freebsd/net80211/ieee80211_wds.h>
+
+#define	IEEE80211_RATE2MBS(r)	(((r) & IEEE80211_RATE_VAL) / 2)
+
+static	void hostap_vattach(struct ieee80211vap *);
+static	int hostap_newstate(struct ieee80211vap *, enum ieee80211_state, int);
+static	int hostap_input(struct ieee80211_node *ni, struct mbuf *m,
+	    int rssi, int nf);
+static void hostap_deliver_data(struct ieee80211vap *,
+	    struct ieee80211_node *, struct mbuf *);
+static void hostap_recv_mgmt(struct ieee80211_node *, struct mbuf *,
+	    int subtype, int rssi, int nf);
+static void hostap_recv_ctl(struct ieee80211_node *, struct mbuf *, int);
+static void hostap_recv_pspoll(struct ieee80211_node *, struct mbuf *);
+
+void
+ieee80211_hostap_attach(struct ieee80211com *ic)
+{
+	ic->ic_vattach[IEEE80211_M_HOSTAP] = hostap_vattach;
+}
+
+void
+ieee80211_hostap_detach(struct ieee80211com *ic)
+{
+}
+
+static void
+hostap_vdetach(struct ieee80211vap *vap)
+{
+}
+
+static void
+hostap_vattach(struct ieee80211vap *vap)
+{
+	vap->iv_newstate = hostap_newstate;
+	vap->iv_input = hostap_input;
+	vap->iv_recv_mgmt = hostap_recv_mgmt;
+	vap->iv_recv_ctl = hostap_recv_ctl;
+	vap->iv_opdetach = hostap_vdetach;
+	vap->iv_deliver_data = hostap_deliver_data;
+}
+
+static void
+sta_disassoc(void *arg, struct ieee80211_node *ni)
+{
+	struct ieee80211vap *vap = arg;
+
+	if (ni->ni_vap == vap && ni->ni_associd != 0) {
+		IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
+			IEEE80211_REASON_ASSOC_LEAVE);
+		ieee80211_node_leave(ni);
+	}
+}
+
+static void
+sta_csa(void *arg, struct ieee80211_node *ni)
+{
+	struct ieee80211vap *vap = arg;
+
+	if (ni->ni_vap == vap && ni->ni_associd != 0)
+		if (ni->ni_inact > vap->iv_inact_init) {
+			ni->ni_inact = vap->iv_inact_init;
+			IEEE80211_NOTE(vap, IEEE80211_MSG_INACT, ni,
+			    "%s: inact %u", __func__, ni->ni_inact);
+		}
+}
+
+static void
+sta_drop(void *arg, struct ieee80211_node *ni)
+{
+	struct ieee80211vap *vap = arg;
+
+	if (ni->ni_vap == vap && ni->ni_associd != 0)
+		ieee80211_node_leave(ni);
+}
+
+/*
+ * Does a channel change require associated stations to re-associate
+ * so protocol state is correct.  This is used when doing CSA across
+ * bands or similar (e.g. HT -> legacy).
+ */
+static int
+isbandchange(struct ieee80211com *ic)
+{
+	return ((ic->ic_bsschan->ic_flags ^ ic->ic_csa_newchan->ic_flags) &
+	    (IEEE80211_CHAN_2GHZ | IEEE80211_CHAN_5GHZ | IEEE80211_CHAN_HALF |
+	     IEEE80211_CHAN_QUARTER | IEEE80211_CHAN_HT)) != 0;
+}
+
+/*
+ * IEEE80211_M_HOSTAP vap state machine handler.
+ */
+static int
+hostap_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
+{
+	struct ieee80211com *ic = vap->iv_ic;
+	enum ieee80211_state ostate;
+
+	IEEE80211_LOCK_ASSERT(ic);
+
+	ostate = vap->iv_state;
+	IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
+	    __func__, ieee80211_state_name[ostate],
+	    ieee80211_state_name[nstate], arg);
+	vap->iv_state = nstate;			/* state transition */
+	if (ostate != IEEE80211_S_SCAN)
+		ieee80211_cancel_scan(vap);	/* background scan */
+	switch (nstate) {
+	case IEEE80211_S_INIT:
+		switch (ostate) {
+		case IEEE80211_S_SCAN:
+			ieee80211_cancel_scan(vap);
+			break;
+		case IEEE80211_S_CAC:
+			ieee80211_dfs_cac_stop(vap);
+			break;
+		case IEEE80211_S_RUN:
+			ieee80211_iterate_nodes(&ic->ic_sta, sta_disassoc, vap);
+			break;
+		default:
+			break;
+		}
+		if (ostate != IEEE80211_S_INIT) {
+			/* NB: optimize INIT -> INIT case */
+			ieee80211_reset_bss(vap);
+		}
+		if (vap->iv_auth->ia_detach != NULL)
+			vap->iv_auth->ia_detach(vap);
+		break;
+	case IEEE80211_S_SCAN:
+		switch (ostate) {
+		case IEEE80211_S_CSA:
+		case IEEE80211_S_RUN:
+			ieee80211_iterate_nodes(&ic->ic_sta, sta_disassoc, vap);
+			/*
+			 * Clear overlapping BSS state; the beacon frame
+			 * will be reconstructed on transition to the RUN
+			 * state and the timeout routines check if the flag
+			 * is set before doing anything so this is sufficient.
+			 */
+			ic->ic_flags_ext &= ~IEEE80211_FEXT_NONERP_PR;
+			ic->ic_flags_ht &= ~IEEE80211_FHT_NONHT_PR;
+			/* fall thru... */
+		case IEEE80211_S_CAC:
+			/*
+			 * NB: We may get here because of a manual channel
+			 *     change in which case we need to stop CAC
+			 * XXX no need to stop if ostate RUN but it's ok
+			 */
+			ieee80211_dfs_cac_stop(vap);
+			/* fall thru... */
+		case IEEE80211_S_INIT:
+			if (vap->iv_des_chan != IEEE80211_CHAN_ANYC &&
+			    !IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) {
+				/*
+				 * Already have a channel; bypass the
+				 * scan and startup immediately.  
+				 * ieee80211_create_ibss will call back to
+				 * move us to RUN state.
+				 */
+				ieee80211_create_ibss(vap, vap->iv_des_chan);
+				break;
+			}
+			/*
+			 * Initiate a scan.  We can come here as a result
+			 * of an IEEE80211_IOC_SCAN_REQ too in which case
+			 * the vap will be marked with IEEE80211_FEXT_SCANREQ
+			 * and the scan request parameters will be present
+			 * in iv_scanreq.  Otherwise we do the default.
+			 */
+			if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) {
+				ieee80211_check_scan(vap,
+				    vap->iv_scanreq_flags,
+				    vap->iv_scanreq_duration,
+				    vap->iv_scanreq_mindwell,
+				    vap->iv_scanreq_maxdwell,
+				    vap->iv_scanreq_nssid, vap->iv_scanreq_ssid);
+				vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
+			} else
+				ieee80211_check_scan_current(vap);
+			break;
+		case IEEE80211_S_SCAN:
+			/*
+			 * A state change requires a reset; scan.
+			 */
+			ieee80211_check_scan_current(vap);
+			break;
+		default:
+			break;
+		}
+		break;
+	case IEEE80211_S_CAC:
+		/*
+		 * Start CAC on a DFS channel.  We come here when starting
+		 * a bss on a DFS channel (see ieee80211_create_ibss).
+		 */
+		ieee80211_dfs_cac_start(vap);
+		break;
+	case IEEE80211_S_RUN:
+		if (vap->iv_flags & IEEE80211_F_WPA) {
+			/* XXX validate prerequisites */
+		}
+		switch (ostate) {
+		case IEEE80211_S_INIT:
+			/*
+			 * Already have a channel; bypass the
+			 * scan and startup immediately.
+			 * Note that ieee80211_create_ibss will call
+			 * back to do a RUN->RUN state change.
+			 */
+			ieee80211_create_ibss(vap,
+			    ieee80211_ht_adjust_channel(ic,
+				ic->ic_curchan, vap->iv_flags_ht));
+			/* NB: iv_bss is changed on return */
+			break;
+		case IEEE80211_S_CAC:
+			/*
+			 * NB: This is the normal state change when CAC
+			 * expires and no radar was detected; no need to
+			 * clear the CAC timer as it's already expired.
+			 */
+			/* fall thru... */
+		case IEEE80211_S_CSA:
+			/*
+			 * Shorten inactivity timer of associated stations
+			 * to weed out sta's that don't follow a CSA.
+			 */
+			ieee80211_iterate_nodes(&ic->ic_sta, sta_csa, vap);
+			/*
+			 * Update bss node channel to reflect where
+			 * we landed after CSA.
+			 */
+			ieee80211_node_set_chan(vap->iv_bss,
+			    ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
+				ieee80211_htchanflags(vap->iv_bss->ni_chan)));
+			/* XXX bypass debug msgs */
+			break;
+		case IEEE80211_S_SCAN:
+		case IEEE80211_S_RUN:
+#ifdef IEEE80211_DEBUG
+			if (ieee80211_msg_debug(vap)) {
+				struct ieee80211_node *ni = vap->iv_bss;
+				ieee80211_note(vap,
+				    "synchronized with %s ssid ",
+				    ether_sprintf(ni->ni_bssid));
+				ieee80211_print_essid(ni->ni_essid,
+				    ni->ni_esslen);
+				/* XXX MCS/HT */
+				printf(" channel %d start %uMb\n",
+				    ieee80211_chan2ieee(ic, ic->ic_curchan),
+				    IEEE80211_RATE2MBS(ni->ni_txrate));
+			}
+#endif
+			break;
+		default:
+			break;
+		}
+		/*
+		 * Start/stop the authenticator.  We delay until here
+		 * to allow configuration to happen out of order.
+		 */
+		if (vap->iv_auth->ia_attach != NULL) {
+			/* XXX check failure */
+			vap->iv_auth->ia_attach(vap);
+		} else if (vap->iv_auth->ia_detach != NULL) {
+			vap->iv_auth->ia_detach(vap);
+		}
+		ieee80211_node_authorize(vap->iv_bss);
+		break;
+	case IEEE80211_S_CSA:
+		if (ostate == IEEE80211_S_RUN && isbandchange(ic)) {
+			/*
+			 * On a ``band change'' silently drop associated
+			 * stations as they must re-associate before they
+			 * can pass traffic (as otherwise protocol state
+			 * such as capabilities and the negotiated rate
+			 * set may/will be wrong).
+			 */
+			ieee80211_iterate_nodes(&ic->ic_sta, sta_drop, vap);
+		}
+		break;
+	default:
+		break;
+	}
+	return 0;
+}
+
+static void
+hostap_deliver_data(struct ieee80211vap *vap,
+	struct ieee80211_node *ni, struct mbuf *m)
+{
+	struct ether_header *eh = mtod(m, struct ether_header *);
+	struct ifnet *ifp = vap->iv_ifp;
+
+	/* clear driver/net80211 flags before passing up */
+	m->m_flags &= ~(M_80211_RX | M_MCAST | M_BCAST);
+
+	KASSERT(vap->iv_opmode == IEEE80211_M_HOSTAP,
+	    ("gack, opmode %d", vap->iv_opmode));
+	/*
+	 * Do accounting.
+	 */
+	ifp->if_ipackets++;
+	IEEE80211_NODE_STAT(ni, rx_data);
+	IEEE80211_NODE_STAT_ADD(ni, rx_bytes, m->m_pkthdr.len);
+	if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
+		m->m_flags |= M_MCAST;		/* XXX M_BCAST? */
+		IEEE80211_NODE_STAT(ni, rx_mcast);
+	} else
+		IEEE80211_NODE_STAT(ni, rx_ucast);
+
+	/* perform as a bridge within the AP */
+	if ((vap->iv_flags & IEEE80211_F_NOBRIDGE) == 0) {
+		struct mbuf *mcopy = NULL;
+
+		if (m->m_flags & M_MCAST) {
+			mcopy = m_dup(m, M_DONTWAIT);
+			if (mcopy == NULL)
+				ifp->if_oerrors++;
+			else
+				mcopy->m_flags |= M_MCAST;
+		} else {
+			/*
+			 * Check if the destination is associated with the
+			 * same vap and authorized to receive traffic.
+			 * Beware of traffic destined for the vap itself;
+			 * sending it will not work; just let it be delivered
+			 * normally.
+			 */
+			struct ieee80211_node *sta = ieee80211_find_vap_node(
+			     &vap->iv_ic->ic_sta, vap, eh->ether_dhost);
+			if (sta != NULL) {
+				if (ieee80211_node_is_authorized(sta)) {
+					/*
+					 * Beware of sending to ourself; this
+					 * needs to happen via the normal
+					 * input path.
+					 */
+					if (sta != vap->iv_bss) {
+						mcopy = m;
+						m = NULL;
+					}
+				} else {
+					vap->iv_stats.is_rx_unauth++;
+					IEEE80211_NODE_STAT(sta, rx_unauth);
+				}
+				ieee80211_free_node(sta);
+			}
+		}
+		if (mcopy != NULL) {
+			int len, err;
+			len = mcopy->m_pkthdr.len;
+			err = ifp->if_transmit(ifp, mcopy);
+			if (err) {
+				/* NB: IFQ_HANDOFF reclaims mcopy */
+			} else {
+				ifp->if_opackets++;
+			}
+		}
+	}
+	if (m != NULL) {
+		/*
+		 * Mark frame as coming from vap's interface.
+		 */
+		m->m_pkthdr.rcvif = ifp;
+		if (m->m_flags & M_MCAST) {
+			/*
+			 * Spam DWDS vap's w/ multicast traffic.
+			 */
+			/* XXX only if dwds in use? */
+			ieee80211_dwds_mcast(vap, m);
+		}
+		if (ni->ni_vlan != 0) {
+			/* attach vlan tag */
+			m->m_pkthdr.ether_vtag = ni->ni_vlan;
+			m->m_flags |= M_VLANTAG;
+		}
+		ifp->if_input(ifp, m);
+	}
+}
+
+/*
+ * Decide if a received management frame should be
+ * printed when debugging is enabled.  This filters some
+ * of the less interesting frames that come frequently
+ * (e.g. beacons).
+ */
+static __inline int
+doprint(struct ieee80211vap *vap, int subtype)
+{
+	switch (subtype) {
+	case IEEE80211_FC0_SUBTYPE_BEACON:
+		return (vap->iv_ic->ic_flags & IEEE80211_F_SCAN);
+	case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
+		return 0;
+	}
+	return 1;
+}
+
+/*
+ * Process a received frame.  The node associated with the sender
+ * should be supplied.  If nothing was found in the node table then
+ * the caller is assumed to supply a reference to iv_bss instead.
+ * The RSSI and a timestamp are also supplied.  The RSSI data is used
+ * during AP scanning to select a AP to associate with; it can have
+ * any units so long as values have consistent units and higher values
+ * mean ``better signal''.  The receive timestamp is currently not used
+ * by the 802.11 layer.
+ */
+static int
+hostap_input(struct ieee80211_node *ni, struct mbuf *m, int rssi, int nf)
+{
+#define	SEQ_LEQ(a,b)	((int)((a)-(b)) <= 0)
+#define	HAS_SEQ(type)	((type & 0x4) == 0)
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct ieee80211com *ic = ni->ni_ic;
+	struct ifnet *ifp = vap->iv_ifp;
+	struct ieee80211_frame *wh;
+	struct ieee80211_key *key;
+	struct ether_header *eh;
+	int hdrspace, need_tap = 1;	/* mbuf need to be tapped. */
+	uint8_t dir, type, subtype, qos;
+	uint8_t *bssid;
+	uint16_t rxseq;
+
+	if (m->m_flags & M_AMPDU_MPDU) {
+		/*
+		 * Fastpath for A-MPDU reorder q resubmission.  Frames
+		 * w/ M_AMPDU_MPDU marked have already passed through
+		 * here but were received out of order and been held on
+		 * the reorder queue.  When resubmitted they are marked
+		 * with the M_AMPDU_MPDU flag and we can bypass most of
+		 * the normal processing.
+		 */
+		wh = mtod(m, struct ieee80211_frame *);
+		type = IEEE80211_FC0_TYPE_DATA;
+		dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
+		subtype = IEEE80211_FC0_SUBTYPE_QOS;
+		hdrspace = ieee80211_hdrspace(ic, wh);	/* XXX optimize? */
+		goto resubmit_ampdu;
+	}
+
+	KASSERT(ni != NULL, ("null node"));
+	ni->ni_inact = ni->ni_inact_reload;
+
+	type = -1;			/* undefined */
+
+	if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_min)) {
+		IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
+		    ni->ni_macaddr, NULL,
+		    "too short (1): len %u", m->m_pkthdr.len);
+		vap->iv_stats.is_rx_tooshort++;
+		goto out;
+	}
+	/*
+	 * Bit of a cheat here, we use a pointer for a 3-address
+	 * frame format but don't reference fields past outside
+	 * ieee80211_frame_min w/o first validating the data is
+	 * present.
+	 */
+	wh = mtod(m, struct ieee80211_frame *);
+
+	if ((wh->i_fc[0] & IEEE80211_FC0_VERSION_MASK) !=
+	    IEEE80211_FC0_VERSION_0) {
+		IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
+		    ni->ni_macaddr, NULL, "wrong version, fc %02x:%02x",
+		    wh->i_fc[0], wh->i_fc[1]);
+		vap->iv_stats.is_rx_badversion++;
+		goto err;
+	}
+
+	dir = wh->i_fc[1] & IEEE80211_FC1_DIR_MASK;
+	type = wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK;
+	subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK;
+	if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
+		if (dir != IEEE80211_FC1_DIR_NODS)
+			bssid = wh->i_addr1;
+		else if (type == IEEE80211_FC0_TYPE_CTL)
+			bssid = wh->i_addr1;
+		else {
+			if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) {
+				IEEE80211_DISCARD_MAC(vap,
+				    IEEE80211_MSG_ANY, ni->ni_macaddr,
+				    NULL, "too short (2): len %u",
+				    m->m_pkthdr.len);
+				vap->iv_stats.is_rx_tooshort++;
+				goto out;
+			}
+			bssid = wh->i_addr3;
+		}
+		/*
+		 * Validate the bssid.
+		 */
+		if (!(type == IEEE80211_FC0_TYPE_MGT &&
+		      subtype == IEEE80211_FC0_SUBTYPE_BEACON) &&
+		    !IEEE80211_ADDR_EQ(bssid, vap->iv_bss->ni_bssid) &&
+		    !IEEE80211_ADDR_EQ(bssid, ifp->if_broadcastaddr)) {
+			/* not interested in */
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
+			    bssid, NULL, "%s", "not to bss");
+			vap->iv_stats.is_rx_wrongbss++;
+			goto out;
+		}
+
+		IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
+		ni->ni_noise = nf;
+		if (HAS_SEQ(type)) {
+			uint8_t tid = ieee80211_gettid(wh);
+			if (IEEE80211_QOS_HAS_SEQ(wh) &&
+			    TID_TO_WME_AC(tid) >= WME_AC_VI)
+				ic->ic_wme.wme_hipri_traffic++;
+			rxseq = le16toh(*(uint16_t *)wh->i_seq);
+			if ((ni->ni_flags & IEEE80211_NODE_HT) == 0 &&
+			    (wh->i_fc[1] & IEEE80211_FC1_RETRY) &&
+			    SEQ_LEQ(rxseq, ni->ni_rxseqs[tid])) {
+				/* duplicate, discard */
+				IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
+				    bssid, "duplicate",
+				    "seqno <%u,%u> fragno <%u,%u> tid %u",
+				    rxseq >> IEEE80211_SEQ_SEQ_SHIFT,
+				    ni->ni_rxseqs[tid] >>
+					IEEE80211_SEQ_SEQ_SHIFT,
+				    rxseq & IEEE80211_SEQ_FRAG_MASK,
+				    ni->ni_rxseqs[tid] &
+					IEEE80211_SEQ_FRAG_MASK,
+				    tid);
+				vap->iv_stats.is_rx_dup++;
+				IEEE80211_NODE_STAT(ni, rx_dup);
+				goto out;
+			}
+			ni->ni_rxseqs[tid] = rxseq;
+		}
+	}
+
+	switch (type) {
+	case IEEE80211_FC0_TYPE_DATA:
+		hdrspace = ieee80211_hdrspace(ic, wh);
+		if (m->m_len < hdrspace &&
+		    (m = m_pullup(m, hdrspace)) == NULL) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
+			    ni->ni_macaddr, NULL,
+			    "data too short: expecting %u", hdrspace);
+			vap->iv_stats.is_rx_tooshort++;
+			goto out;		/* XXX */
+		}
+		if (!(dir == IEEE80211_FC1_DIR_TODS ||
+		     (dir == IEEE80211_FC1_DIR_DSTODS &&
+		      (vap->iv_flags & IEEE80211_F_DWDS)))) {
+			if (dir != IEEE80211_FC1_DIR_DSTODS) {
+				IEEE80211_DISCARD(vap,
+				    IEEE80211_MSG_INPUT, wh, "data",
+				    "incorrect dir 0x%x", dir);
+			} else {
+				IEEE80211_DISCARD(vap,
+				    IEEE80211_MSG_INPUT |
+				    IEEE80211_MSG_WDS, wh,
+				    "4-address data",
+				    "%s", "DWDS not enabled");
+			}
+			vap->iv_stats.is_rx_wrongdir++;
+			goto out;
+		}
+		/* check if source STA is associated */
+		if (ni == vap->iv_bss) {
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
+			    wh, "data", "%s", "unknown src");
+			ieee80211_send_error(ni, wh->i_addr2,
+			    IEEE80211_FC0_SUBTYPE_DEAUTH,
+			    IEEE80211_REASON_NOT_AUTHED);
+			vap->iv_stats.is_rx_notassoc++;
+			goto err;
+		}
+		if (ni->ni_associd == 0) {
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
+			    wh, "data", "%s", "unassoc src");
+			IEEE80211_SEND_MGMT(ni,
+			    IEEE80211_FC0_SUBTYPE_DISASSOC,
+			    IEEE80211_REASON_NOT_ASSOCED);
+			vap->iv_stats.is_rx_notassoc++;
+			goto err;
+		}
+
+		/*
+		 * Check for power save state change.
+		 * XXX out-of-order A-MPDU frames?
+		 */
+		if (((wh->i_fc[1] & IEEE80211_FC1_PWR_MGT) ^
+		    (ni->ni_flags & IEEE80211_NODE_PWR_MGT)))
+			ieee80211_node_pwrsave(ni,
+				wh->i_fc[1] & IEEE80211_FC1_PWR_MGT);
+		/*
+		 * For 4-address packets handle WDS discovery
+		 * notifications.  Once a WDS link is setup frames
+		 * are just delivered to the WDS vap (see below).
+		 */
+		if (dir == IEEE80211_FC1_DIR_DSTODS && ni->ni_wdsvap == NULL) {
+			if (!ieee80211_node_is_authorized(ni)) {
+				IEEE80211_DISCARD(vap,
+				    IEEE80211_MSG_INPUT |
+				    IEEE80211_MSG_WDS, wh,
+				    "4-address data",
+				    "%s", "unauthorized port");
+				vap->iv_stats.is_rx_unauth++;
+				IEEE80211_NODE_STAT(ni, rx_unauth);
+				goto err;
+			}
+			ieee80211_dwds_discover(ni, m);
+			return type;
+		}
+
+		/*
+		 * Handle A-MPDU re-ordering.  If the frame is to be
+		 * processed directly then ieee80211_ampdu_reorder
+		 * will return 0; otherwise it has consumed the mbuf
+		 * and we should do nothing more with it.
+		 */
+		if ((m->m_flags & M_AMPDU) &&
+		    ieee80211_ampdu_reorder(ni, m) != 0) {
+			m = NULL;
+			goto out;
+		}
+	resubmit_ampdu:
+
+		/*
+		 * Handle privacy requirements.  Note that we
+		 * must not be preempted from here until after
+		 * we (potentially) call ieee80211_crypto_demic;
+		 * otherwise we may violate assumptions in the
+		 * crypto cipher modules used to do delayed update
+		 * of replay sequence numbers.
+		 */
+		if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
+			if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
+				/*
+				 * Discard encrypted frames when privacy is off.
+				 */
+				IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
+				    wh, "WEP", "%s", "PRIVACY off");
+				vap->iv_stats.is_rx_noprivacy++;
+				IEEE80211_NODE_STAT(ni, rx_noprivacy);
+				goto out;
+			}
+			key = ieee80211_crypto_decap(ni, m, hdrspace);
+			if (key == NULL) {
+				/* NB: stats+msgs handled in crypto_decap */
+				IEEE80211_NODE_STAT(ni, rx_wepfail);
+				goto out;
+			}
+			wh = mtod(m, struct ieee80211_frame *);
+			wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
+		} else {
+			/* XXX M_WEP and IEEE80211_F_PRIVACY */
+			key = NULL;
+		}
+
+		/*
+		 * Save QoS bits for use below--before we strip the header.
+		 */
+		if (subtype == IEEE80211_FC0_SUBTYPE_QOS) {
+			qos = (dir == IEEE80211_FC1_DIR_DSTODS) ?
+			    ((struct ieee80211_qosframe_addr4 *)wh)->i_qos[0] :
+			    ((struct ieee80211_qosframe *)wh)->i_qos[0];
+		} else
+			qos = 0;
+
+		/*
+		 * Next up, any fragmentation.
+		 */
+		if (!IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+			m = ieee80211_defrag(ni, m, hdrspace);
+			if (m == NULL) {
+				/* Fragment dropped or frame not complete yet */
+				goto out;
+			}
+		}
+		wh = NULL;		/* no longer valid, catch any uses */
+
+		/*
+		 * Next strip any MSDU crypto bits.
+		 */
+		if (key != NULL && !ieee80211_crypto_demic(vap, key, m, 0)) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
+			    ni->ni_macaddr, "data", "%s", "demic error");
+			vap->iv_stats.is_rx_demicfail++;
+			IEEE80211_NODE_STAT(ni, rx_demicfail);
+			goto out;
+		}
+		/* copy to listener after decrypt */
+		if (ieee80211_radiotap_active_vap(vap))
+			ieee80211_radiotap_rx(vap, m);
+		need_tap = 0;
+		/*
+		 * Finally, strip the 802.11 header.
+		 */
+		m = ieee80211_decap(vap, m, hdrspace);
+		if (m == NULL) {
+			/* XXX mask bit to check for both */
+			/* don't count Null data frames as errors */
+			if (subtype == IEEE80211_FC0_SUBTYPE_NODATA ||
+			    subtype == IEEE80211_FC0_SUBTYPE_QOS_NULL)
+				goto out;
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
+			    ni->ni_macaddr, "data", "%s", "decap error");
+			vap->iv_stats.is_rx_decap++;
+			IEEE80211_NODE_STAT(ni, rx_decap);
+			goto err;
+		}
+		eh = mtod(m, struct ether_header *);
+		if (!ieee80211_node_is_authorized(ni)) {
+			/*
+			 * Deny any non-PAE frames received prior to
+			 * authorization.  For open/shared-key
+			 * authentication the port is mark authorized
+			 * after authentication completes.  For 802.1x
+			 * the port is not marked authorized by the
+			 * authenticator until the handshake has completed.
+			 */
+			if (eh->ether_type != htons(ETHERTYPE_PAE)) {
+				IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
+				    eh->ether_shost, "data",
+				    "unauthorized port: ether type 0x%x len %u",
+				    eh->ether_type, m->m_pkthdr.len);
+				vap->iv_stats.is_rx_unauth++;
+				IEEE80211_NODE_STAT(ni, rx_unauth);
+				goto err;
+			}
+		} else {
+			/*
+			 * When denying unencrypted frames, discard
+			 * any non-PAE frames received without encryption.
+			 */
+			if ((vap->iv_flags & IEEE80211_F_DROPUNENC) &&
+			    (key == NULL && (m->m_flags & M_WEP) == 0) &&
+			    eh->ether_type != htons(ETHERTYPE_PAE)) {
+				/*
+				 * Drop unencrypted frames.
+				 */
+				vap->iv_stats.is_rx_unencrypted++;
+				IEEE80211_NODE_STAT(ni, rx_unencrypted);
+				goto out;
+			}
+		}
+		/* XXX require HT? */
+		if (qos & IEEE80211_QOS_AMSDU) {
+			m = ieee80211_decap_amsdu(ni, m);
+			if (m == NULL)
+				return IEEE80211_FC0_TYPE_DATA;
+		} else {
+#ifdef IEEE80211_SUPPORT_SUPERG
+			m = ieee80211_decap_fastframe(vap, ni, m);
+			if (m == NULL)
+				return IEEE80211_FC0_TYPE_DATA;
+#endif
+		}
+		if (dir == IEEE80211_FC1_DIR_DSTODS && ni->ni_wdsvap != NULL)
+			ieee80211_deliver_data(ni->ni_wdsvap, ni, m);
+		else
+			hostap_deliver_data(vap, ni, m);
+		return IEEE80211_FC0_TYPE_DATA;
+
+	case IEEE80211_FC0_TYPE_MGT:
+		vap->iv_stats.is_rx_mgmt++;
+		IEEE80211_NODE_STAT(ni, rx_mgmt);
+		if (dir != IEEE80211_FC1_DIR_NODS) {
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
+			    wh, "mgt", "incorrect dir 0x%x", dir);
+			vap->iv_stats.is_rx_wrongdir++;
+			goto err;
+		}
+		if (m->m_pkthdr.len < sizeof(struct ieee80211_frame)) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_ANY,
+			    ni->ni_macaddr, "mgt", "too short: len %u",
+			    m->m_pkthdr.len);
+			vap->iv_stats.is_rx_tooshort++;
+			goto out;
+		}
+		if (IEEE80211_IS_MULTICAST(wh->i_addr2)) {
+			/* ensure return frames are unicast */
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
+			    wh, NULL, "source is multicast: %s",
+			    ether_sprintf(wh->i_addr2));
+			vap->iv_stats.is_rx_mgtdiscard++;	/* XXX stat */
+			goto out;
+		}
+#ifdef IEEE80211_DEBUG
+		if ((ieee80211_msg_debug(vap) && doprint(vap, subtype)) ||
+		    ieee80211_msg_dumppkts(vap)) {
+			if_printf(ifp, "received %s from %s rssi %d\n",
+			    ieee80211_mgt_subtype_name[subtype >>
+				IEEE80211_FC0_SUBTYPE_SHIFT],
+			    ether_sprintf(wh->i_addr2), rssi);
+		}
+#endif
+		if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
+			if (subtype != IEEE80211_FC0_SUBTYPE_AUTH) {
+				/*
+				 * Only shared key auth frames with a challenge
+				 * should be encrypted, discard all others.
+				 */
+				IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
+				    wh, NULL,
+				    "%s", "WEP set but not permitted");
+				vap->iv_stats.is_rx_mgtdiscard++; /* XXX */
+				goto out;
+			}
+			if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
+				/*
+				 * Discard encrypted frames when privacy is off.
+				 */
+				IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
+				    wh, NULL, "%s", "WEP set but PRIVACY off");
+				vap->iv_stats.is_rx_noprivacy++;
+				goto out;
+			}
+			hdrspace = ieee80211_hdrspace(ic, wh);
+			key = ieee80211_crypto_decap(ni, m, hdrspace);
+			if (key == NULL) {
+				/* NB: stats+msgs handled in crypto_decap */
+				goto out;
+			}
+			wh = mtod(m, struct ieee80211_frame *);
+			wh->i_fc[1] &= ~IEEE80211_FC1_WEP;
+		}
+		/*
+		 * Pass the packet to radiotap before calling iv_recv_mgmt().
+		 * Otherwise iv_recv_mgmt() might pass another packet to
+		 * radiotap, resulting in out of order packet captures.
+		 */
+		if (ieee80211_radiotap_active_vap(vap))
+			ieee80211_radiotap_rx(vap, m);
+		need_tap = 0;
+		vap->iv_recv_mgmt(ni, m, subtype, rssi, nf);
+		goto out;
+
+	case IEEE80211_FC0_TYPE_CTL:
+		vap->iv_stats.is_rx_ctl++;
+		IEEE80211_NODE_STAT(ni, rx_ctrl);
+		vap->iv_recv_ctl(ni, m, subtype);
+		goto out;
+	default:
+		IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
+		    wh, "bad", "frame type 0x%x", type);
+		/* should not come here */
+		break;
+	}
+err:
+	ifp->if_ierrors++;
+out:
+	if (m != NULL) {
+		if (need_tap && ieee80211_radiotap_active_vap(vap))
+			ieee80211_radiotap_rx(vap, m);
+		m_freem(m);
+	}
+	return type;
+#undef SEQ_LEQ
+}
+
+static void
+hostap_auth_open(struct ieee80211_node *ni, struct ieee80211_frame *wh,
+    int rssi, int nf, uint16_t seq, uint16_t status)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+
+	KASSERT(vap->iv_state == IEEE80211_S_RUN, ("state %d", vap->iv_state));
+
+	if (ni->ni_authmode == IEEE80211_AUTH_SHARED) {
+		IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+		    ni->ni_macaddr, "open auth",
+		    "bad sta auth mode %u", ni->ni_authmode);
+		vap->iv_stats.is_rx_bad_auth++;	/* XXX */
+		/*
+		 * Clear any challenge text that may be there if
+		 * a previous shared key auth failed and then an
+		 * open auth is attempted.
+		 */
+		if (ni->ni_challenge != NULL) {
+			free(ni->ni_challenge, M_80211_NODE);
+			ni->ni_challenge = NULL;
+		}
+		/* XXX hack to workaround calling convention */
+		ieee80211_send_error(ni, wh->i_addr2, 
+		    IEEE80211_FC0_SUBTYPE_AUTH,
+		    (seq + 1) | (IEEE80211_STATUS_ALG<<16));
+		return;
+	}
+	if (seq != IEEE80211_AUTH_OPEN_REQUEST) {
+		vap->iv_stats.is_rx_bad_auth++;
+		return;
+	}
+	/* always accept open authentication requests */
+	if (ni == vap->iv_bss) {
+		ni = ieee80211_dup_bss(vap, wh->i_addr2);
+		if (ni == NULL)
+			return;
+	} else if ((ni->ni_flags & IEEE80211_NODE_AREF) == 0)
+		(void) ieee80211_ref_node(ni);
+	/*
+	 * Mark the node as referenced to reflect that it's
+	 * reference count has been bumped to insure it remains
+	 * after the transaction completes.
+	 */
+	ni->ni_flags |= IEEE80211_NODE_AREF;
+	/*
+	 * Mark the node as requiring a valid association id
+	 * before outbound traffic is permitted.
+	 */
+	ni->ni_flags |= IEEE80211_NODE_ASSOCID;
+
+	if (vap->iv_acl != NULL &&
+	    vap->iv_acl->iac_getpolicy(vap) == IEEE80211_MACCMD_POLICY_RADIUS) {
+		/*
+		 * When the ACL policy is set to RADIUS we defer the
+		 * authorization to a user agent.  Dispatch an event,
+		 * a subsequent MLME call will decide the fate of the
+		 * station.  If the user agent is not present then the
+		 * node will be reclaimed due to inactivity.
+		 */
+		IEEE80211_NOTE_MAC(vap,
+		    IEEE80211_MSG_AUTH | IEEE80211_MSG_ACL, ni->ni_macaddr,
+		    "%s", "station authentication defered (radius acl)");
+		ieee80211_notify_node_auth(ni);
+	} else {
+		IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, seq + 1);
+		IEEE80211_NOTE_MAC(vap,
+		    IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH, ni->ni_macaddr,
+		    "%s", "station authenticated (open)");
+		/*
+		 * When 802.1x is not in use mark the port
+		 * authorized at this point so traffic can flow.
+		 */
+		if (ni->ni_authmode != IEEE80211_AUTH_8021X)
+			ieee80211_node_authorize(ni);
+	}
+}
+
+static void
+hostap_auth_shared(struct ieee80211_node *ni, struct ieee80211_frame *wh,
+    uint8_t *frm, uint8_t *efrm, int rssi, int nf,
+    uint16_t seq, uint16_t status)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+	uint8_t *challenge;
+	int allocbs, estatus;
+
+	KASSERT(vap->iv_state == IEEE80211_S_RUN, ("state %d", vap->iv_state));
+
+	/*
+	 * NB: this can happen as we allow pre-shared key
+	 * authentication to be enabled w/o wep being turned
+	 * on so that configuration of these can be done
+	 * in any order.  It may be better to enforce the
+	 * ordering in which case this check would just be
+	 * for sanity/consistency.
+	 */
+	if ((vap->iv_flags & IEEE80211_F_PRIVACY) == 0) {
+		IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+		    ni->ni_macaddr, "shared key auth",
+		    "%s", " PRIVACY is disabled");
+		estatus = IEEE80211_STATUS_ALG;
+		goto bad;
+	}
+	/*
+	 * Pre-shared key authentication is evil; accept
+	 * it only if explicitly configured (it is supported
+	 * mainly for compatibility with clients like Mac OS X).
+	 */
+	if (ni->ni_authmode != IEEE80211_AUTH_AUTO &&
+	    ni->ni_authmode != IEEE80211_AUTH_SHARED) {
+		IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+		    ni->ni_macaddr, "shared key auth",
+		    "bad sta auth mode %u", ni->ni_authmode);
+		vap->iv_stats.is_rx_bad_auth++;	/* XXX maybe a unique error? */
+		estatus = IEEE80211_STATUS_ALG;
+		goto bad;
+	}
+
+	challenge = NULL;
+	if (frm + 1 < efrm) {
+		if ((frm[1] + 2) > (efrm - frm)) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+			    ni->ni_macaddr, "shared key auth",
+			    "ie %d/%d too long",
+			    frm[0], (frm[1] + 2) - (efrm - frm));
+			vap->iv_stats.is_rx_bad_auth++;
+			estatus = IEEE80211_STATUS_CHALLENGE;
+			goto bad;
+		}
+		if (*frm == IEEE80211_ELEMID_CHALLENGE)
+			challenge = frm;
+		frm += frm[1] + 2;
+	}
+	switch (seq) {
+	case IEEE80211_AUTH_SHARED_CHALLENGE:
+	case IEEE80211_AUTH_SHARED_RESPONSE:
+		if (challenge == NULL) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+			    ni->ni_macaddr, "shared key auth",
+			    "%s", "no challenge");
+			vap->iv_stats.is_rx_bad_auth++;
+			estatus = IEEE80211_STATUS_CHALLENGE;
+			goto bad;
+		}
+		if (challenge[1] != IEEE80211_CHALLENGE_LEN) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+			    ni->ni_macaddr, "shared key auth",
+			    "bad challenge len %d", challenge[1]);
+			vap->iv_stats.is_rx_bad_auth++;
+			estatus = IEEE80211_STATUS_CHALLENGE;
+			goto bad;
+		}
+	default:
+		break;
+	}
+	switch (seq) {
+	case IEEE80211_AUTH_SHARED_REQUEST:
+		if (ni == vap->iv_bss) {
+			ni = ieee80211_dup_bss(vap, wh->i_addr2);
+			if (ni == NULL) {
+				/* NB: no way to return an error */
+				return;
+			}
+			allocbs = 1;
+		} else {
+			if ((ni->ni_flags & IEEE80211_NODE_AREF) == 0)
+				(void) ieee80211_ref_node(ni);
+			allocbs = 0;
+		}
+		/*
+		 * Mark the node as referenced to reflect that it's
+		 * reference count has been bumped to insure it remains
+		 * after the transaction completes.
+		 */
+		ni->ni_flags |= IEEE80211_NODE_AREF;
+		/*
+		 * Mark the node as requiring a valid associatio id
+		 * before outbound traffic is permitted.
+		 */
+		ni->ni_flags |= IEEE80211_NODE_ASSOCID;
+		IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
+		ni->ni_noise = nf;
+		if (!ieee80211_alloc_challenge(ni)) {
+			/* NB: don't return error so they rexmit */
+			return;
+		}
+		get_random_bytes(ni->ni_challenge,
+			IEEE80211_CHALLENGE_LEN);
+		IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH,
+		    ni, "shared key %sauth request", allocbs ? "" : "re");
+		/*
+		 * When the ACL policy is set to RADIUS we defer the
+		 * authorization to a user agent.  Dispatch an event,
+		 * a subsequent MLME call will decide the fate of the
+		 * station.  If the user agent is not present then the
+		 * node will be reclaimed due to inactivity.
+		 */
+		if (vap->iv_acl != NULL &&
+		    vap->iv_acl->iac_getpolicy(vap) == IEEE80211_MACCMD_POLICY_RADIUS) {
+			IEEE80211_NOTE_MAC(vap,
+			    IEEE80211_MSG_AUTH | IEEE80211_MSG_ACL,
+			    ni->ni_macaddr,
+			    "%s", "station authentication defered (radius acl)");
+			ieee80211_notify_node_auth(ni);
+			return;
+		}
+		break;
+	case IEEE80211_AUTH_SHARED_RESPONSE:
+		if (ni == vap->iv_bss) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+			    ni->ni_macaddr, "shared key response",
+			    "%s", "unknown station");
+			/* NB: don't send a response */
+			return;
+		}
+		if (ni->ni_challenge == NULL) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+			    ni->ni_macaddr, "shared key response",
+			    "%s", "no challenge recorded");
+			vap->iv_stats.is_rx_bad_auth++;
+			estatus = IEEE80211_STATUS_CHALLENGE;
+			goto bad;
+		}
+		if (memcmp(ni->ni_challenge, &challenge[2],
+			   challenge[1]) != 0) {
+			IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+			    ni->ni_macaddr, "shared key response",
+			    "%s", "challenge mismatch");
+			vap->iv_stats.is_rx_auth_fail++;
+			estatus = IEEE80211_STATUS_CHALLENGE;
+			goto bad;
+		}
+		IEEE80211_NOTE(vap, IEEE80211_MSG_DEBUG | IEEE80211_MSG_AUTH,
+		    ni, "%s", "station authenticated (shared key)");
+		ieee80211_node_authorize(ni);
+		break;
+	default:
+		IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_AUTH,
+		    ni->ni_macaddr, "shared key auth",
+		    "bad seq %d", seq);
+		vap->iv_stats.is_rx_bad_auth++;
+		estatus = IEEE80211_STATUS_SEQUENCE;
+		goto bad;
+	}
+	IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_AUTH, seq + 1);
+	return;
+bad:
+	/*
+	 * Send an error response; but only when operating as an AP.
+	 */
+	/* XXX hack to workaround calling convention */
+	ieee80211_send_error(ni, wh->i_addr2,
+	    IEEE80211_FC0_SUBTYPE_AUTH,
+	    (seq + 1) | (estatus<<16));
+}
+
+/*
+ * Convert a WPA cipher selector OUI to an internal
+ * cipher algorithm.  Where appropriate we also
+ * record any key length.
+ */
+static int
+wpa_cipher(const uint8_t *sel, uint8_t *keylen)
+{
+#define	WPA_SEL(x)	(((x)<<24)|WPA_OUI)
+	uint32_t w = LE_READ_4(sel);
+
+	switch (w) {
+	case WPA_SEL(WPA_CSE_NULL):
+		return IEEE80211_CIPHER_NONE;
+	case WPA_SEL(WPA_CSE_WEP40):
+		if (keylen)
+			*keylen = 40 / NBBY;
+		return IEEE80211_CIPHER_WEP;
+	case WPA_SEL(WPA_CSE_WEP104):
+		if (keylen)
+			*keylen = 104 / NBBY;
+		return IEEE80211_CIPHER_WEP;
+	case WPA_SEL(WPA_CSE_TKIP):
+		return IEEE80211_CIPHER_TKIP;
+	case WPA_SEL(WPA_CSE_CCMP):
+		return IEEE80211_CIPHER_AES_CCM;
+	}
+	return 32;		/* NB: so 1<< is discarded */
+#undef WPA_SEL
+}
+
+/*
+ * Convert a WPA key management/authentication algorithm
+ * to an internal code.
+ */
+static int
+wpa_keymgmt(const uint8_t *sel)
+{
+#define	WPA_SEL(x)	(((x)<<24)|WPA_OUI)
+	uint32_t w = LE_READ_4(sel);
+
+	switch (w) {
+	case WPA_SEL(WPA_ASE_8021X_UNSPEC):
+		return WPA_ASE_8021X_UNSPEC;
+	case WPA_SEL(WPA_ASE_8021X_PSK):
+		return WPA_ASE_8021X_PSK;
+	case WPA_SEL(WPA_ASE_NONE):
+		return WPA_ASE_NONE;
+	}
+	return 0;		/* NB: so is discarded */
+#undef WPA_SEL
+}
+
+/*
+ * Parse a WPA information element to collect parameters.
+ * Note that we do not validate security parameters; that
+ * is handled by the authenticator; the parsing done here
+ * is just for internal use in making operational decisions.
+ */
+static int
+ieee80211_parse_wpa(struct ieee80211vap *vap, const uint8_t *frm,
+	struct ieee80211_rsnparms *rsn, const struct ieee80211_frame *wh)
+{
+	uint8_t len = frm[1];
+	uint32_t w;
+	int n;
+
+	/*
+	 * Check the length once for fixed parts: OUI, type,
+	 * version, mcast cipher, and 2 selector counts.
+	 * Other, variable-length data, must be checked separately.
+	 */
+	if ((vap->iv_flags & IEEE80211_F_WPA1) == 0) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "WPA", "not WPA, flags 0x%x", vap->iv_flags);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	if (len < 14) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "WPA", "too short, len %u", len);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	frm += 6, len -= 4;		/* NB: len is payload only */
+	/* NB: iswpaoui already validated the OUI and type */
+	w = LE_READ_2(frm);
+	if (w != WPA_VERSION) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "WPA", "bad version %u", w);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	frm += 2, len -= 2;
+
+	memset(rsn, 0, sizeof(*rsn));
+
+	/* multicast/group cipher */
+	rsn->rsn_mcastcipher = wpa_cipher(frm, &rsn->rsn_mcastkeylen);
+	frm += 4, len -= 4;
+
+	/* unicast ciphers */
+	n = LE_READ_2(frm);
+	frm += 2, len -= 2;
+	if (len < n*4+2) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "WPA", "ucast cipher data too short; len %u, n %u",
+		    len, n);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	w = 0;
+	for (; n > 0; n--) {
+		w |= 1<<wpa_cipher(frm, &rsn->rsn_ucastkeylen);
+		frm += 4, len -= 4;
+	}
+	if (w & (1<<IEEE80211_CIPHER_TKIP))
+		rsn->rsn_ucastcipher = IEEE80211_CIPHER_TKIP;
+	else
+		rsn->rsn_ucastcipher = IEEE80211_CIPHER_AES_CCM;
+
+	/* key management algorithms */
+	n = LE_READ_2(frm);
+	frm += 2, len -= 2;
+	if (len < n*4) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "WPA", "key mgmt alg data too short; len %u, n %u",
+		    len, n);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	w = 0;
+	for (; n > 0; n--) {
+		w |= wpa_keymgmt(frm);
+		frm += 4, len -= 4;
+	}
+	if (w & WPA_ASE_8021X_UNSPEC)
+		rsn->rsn_keymgmt = WPA_ASE_8021X_UNSPEC;
+	else
+		rsn->rsn_keymgmt = WPA_ASE_8021X_PSK;
+
+	if (len > 2)		/* optional capabilities */
+		rsn->rsn_caps = LE_READ_2(frm);
+
+	return 0;
+}
+
+/*
+ * Convert an RSN cipher selector OUI to an internal
+ * cipher algorithm.  Where appropriate we also
+ * record any key length.
+ */
+static int
+rsn_cipher(const uint8_t *sel, uint8_t *keylen)
+{
+#define	RSN_SEL(x)	(((x)<<24)|RSN_OUI)
+	uint32_t w = LE_READ_4(sel);
+
+	switch (w) {
+	case RSN_SEL(RSN_CSE_NULL):
+		return IEEE80211_CIPHER_NONE;
+	case RSN_SEL(RSN_CSE_WEP40):
+		if (keylen)
+			*keylen = 40 / NBBY;
+		return IEEE80211_CIPHER_WEP;
+	case RSN_SEL(RSN_CSE_WEP104):
+		if (keylen)
+			*keylen = 104 / NBBY;
+		return IEEE80211_CIPHER_WEP;
+	case RSN_SEL(RSN_CSE_TKIP):
+		return IEEE80211_CIPHER_TKIP;
+	case RSN_SEL(RSN_CSE_CCMP):
+		return IEEE80211_CIPHER_AES_CCM;
+	case RSN_SEL(RSN_CSE_WRAP):
+		return IEEE80211_CIPHER_AES_OCB;
+	}
+	return 32;		/* NB: so 1<< is discarded */
+#undef WPA_SEL
+}
+
+/*
+ * Convert an RSN key management/authentication algorithm
+ * to an internal code.
+ */
+static int
+rsn_keymgmt(const uint8_t *sel)
+{
+#define	RSN_SEL(x)	(((x)<<24)|RSN_OUI)
+	uint32_t w = LE_READ_4(sel);
+
+	switch (w) {
+	case RSN_SEL(RSN_ASE_8021X_UNSPEC):
+		return RSN_ASE_8021X_UNSPEC;
+	case RSN_SEL(RSN_ASE_8021X_PSK):
+		return RSN_ASE_8021X_PSK;
+	case RSN_SEL(RSN_ASE_NONE):
+		return RSN_ASE_NONE;
+	}
+	return 0;		/* NB: so is discarded */
+#undef RSN_SEL
+}
+
+/*
+ * Parse a WPA/RSN information element to collect parameters
+ * and validate the parameters against what has been
+ * configured for the system.
+ */
+static int
+ieee80211_parse_rsn(struct ieee80211vap *vap, const uint8_t *frm,
+	struct ieee80211_rsnparms *rsn, const struct ieee80211_frame *wh)
+{
+	uint8_t len = frm[1];
+	uint32_t w;
+	int n;
+
+	/*
+	 * Check the length once for fixed parts: 
+	 * version, mcast cipher, and 2 selector counts.
+	 * Other, variable-length data, must be checked separately.
+	 */
+	if ((vap->iv_flags & IEEE80211_F_WPA2) == 0) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "WPA", "not RSN, flags 0x%x", vap->iv_flags);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	if (len < 10) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "RSN", "too short, len %u", len);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	frm += 2;
+	w = LE_READ_2(frm);
+	if (w != RSN_VERSION) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "RSN", "bad version %u", w);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	frm += 2, len -= 2;
+
+	memset(rsn, 0, sizeof(*rsn));
+
+	/* multicast/group cipher */
+	rsn->rsn_mcastcipher = rsn_cipher(frm, &rsn->rsn_mcastkeylen);
+	frm += 4, len -= 4;
+
+	/* unicast ciphers */
+	n = LE_READ_2(frm);
+	frm += 2, len -= 2;
+	if (len < n*4+2) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "RSN", "ucast cipher data too short; len %u, n %u",
+		    len, n);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	w = 0;
+	for (; n > 0; n--) {
+		w |= 1<<rsn_cipher(frm, &rsn->rsn_ucastkeylen);
+		frm += 4, len -= 4;
+	}
+	if (w & (1<<IEEE80211_CIPHER_TKIP))
+		rsn->rsn_ucastcipher = IEEE80211_CIPHER_TKIP;
+	else
+		rsn->rsn_ucastcipher = IEEE80211_CIPHER_AES_CCM;
+
+	/* key management algorithms */
+	n = LE_READ_2(frm);
+	frm += 2, len -= 2;
+	if (len < n*4) {
+		IEEE80211_DISCARD_IE(vap,
+		    IEEE80211_MSG_ELEMID | IEEE80211_MSG_WPA,
+		    wh, "RSN", "key mgmt alg data too short; len %u, n %u",
+		    len, n);
+		return IEEE80211_REASON_IE_INVALID;
+	}
+	w = 0;
+	for (; n > 0; n--) {
+		w |= rsn_keymgmt(frm);
+		frm += 4, len -= 4;
+	}
+	if (w & RSN_ASE_8021X_UNSPEC)
+		rsn->rsn_keymgmt = RSN_ASE_8021X_UNSPEC;
+	else
+		rsn->rsn_keymgmt = RSN_ASE_8021X_PSK;
+
+	/* optional RSN capabilities */
+	if (len > 2)
+		rsn->rsn_caps = LE_READ_2(frm);
+	/* XXXPMKID */
+
+	return 0;
+}
+
+/*
+ * WPA/802.11i assocation request processing.
+ */
+static int
+wpa_assocreq(struct ieee80211_node *ni, struct ieee80211_rsnparms *rsnparms,
+	const struct ieee80211_frame *wh, const uint8_t *wpa,
+	const uint8_t *rsn, uint16_t capinfo)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+	uint8_t reason;
+	int badwparsn;
+
+	ni->ni_flags &= ~(IEEE80211_NODE_WPS|IEEE80211_NODE_TSN);
+	if (wpa == NULL && rsn == NULL) {
+		if (vap->iv_flags_ext & IEEE80211_FEXT_WPS) {
+			/*
+			 * W-Fi Protected Setup (WPS) permits
+			 * clients to associate and pass EAPOL frames
+			 * to establish initial credentials.
+			 */
+			ni->ni_flags |= IEEE80211_NODE_WPS;
+			return 1;
+		}
+		if ((vap->iv_flags_ext & IEEE80211_FEXT_TSN) &&
+		    (capinfo & IEEE80211_CAPINFO_PRIVACY)) {
+			/* 
+			 * Transitional Security Network.  Permits clients
+			 * to associate and use WEP while WPA is configured.
+			 */
+			ni->ni_flags |= IEEE80211_NODE_TSN;
+			return 1;
+		}
+		IEEE80211_DISCARD(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_WPA,
+		    wh, NULL, "%s", "no WPA/RSN IE in association request");
+		vap->iv_stats.is_rx_assoc_badwpaie++;
+		reason = IEEE80211_REASON_IE_INVALID;
+		goto bad;
+	}
+	/* assert right association security credentials */
+	badwparsn = 0;			/* NB: to silence compiler */
+	switch (vap->iv_flags & IEEE80211_F_WPA) {
+	case IEEE80211_F_WPA1:
+		badwparsn = (wpa == NULL);
+		break;
+	case IEEE80211_F_WPA2:
+		badwparsn = (rsn == NULL);
+		break;
+	case IEEE80211_F_WPA1|IEEE80211_F_WPA2:
+		badwparsn = (wpa == NULL && rsn == NULL);
+		break;
+	}
+	if (badwparsn) {
+		IEEE80211_DISCARD(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_WPA,
+		    wh, NULL,
+		    "%s", "missing WPA/RSN IE in association request");
+		vap->iv_stats.is_rx_assoc_badwpaie++;
+		reason = IEEE80211_REASON_IE_INVALID;
+		goto bad;
+	}
+	/*
+	 * Parse WPA/RSN information element.
+	 */
+	if (wpa != NULL)
+		reason = ieee80211_parse_wpa(vap, wpa, rsnparms, wh);
+	else
+		reason = ieee80211_parse_rsn(vap, rsn, rsnparms, wh);
+	if (reason != 0) {
+		/* XXX distinguish WPA/RSN? */
+		vap->iv_stats.is_rx_assoc_badwpaie++;
+		goto bad;
+	}
+	IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC | IEEE80211_MSG_WPA, ni,
+	    "%s ie: mc %u/%u uc %u/%u key %u caps 0x%x",
+	    wpa != NULL ? "WPA" : "RSN",
+	    rsnparms->rsn_mcastcipher, rsnparms->rsn_mcastkeylen,
+	    rsnparms->rsn_ucastcipher, rsnparms->rsn_ucastkeylen,
+	    rsnparms->rsn_keymgmt, rsnparms->rsn_caps);
+
+	return 1;
+bad:
+	ieee80211_node_deauth(ni, reason);
+	return 0;
+}
+
+/* XXX find a better place for definition */
+struct l2_update_frame {
+	struct ether_header eh;
+	uint8_t dsap;
+	uint8_t ssap;
+	uint8_t control;
+	uint8_t xid[3];
+}  __packed;
+
+/*
+ * Deliver a TGf L2UF frame on behalf of a station.
+ * This primes any bridge when the station is roaming
+ * between ap's on the same wired network.
+ */
+static void
+ieee80211_deliver_l2uf(struct ieee80211_node *ni)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct ifnet *ifp = vap->iv_ifp;
+	struct mbuf *m;
+	struct l2_update_frame *l2uf;
+	struct ether_header *eh;
+	
+	m = m_gethdr(M_NOWAIT, MT_DATA);
+	if (m == NULL) {
+		IEEE80211_NOTE(vap, IEEE80211_MSG_ASSOC, ni,
+		    "%s", "no mbuf for l2uf frame");
+		vap->iv_stats.is_rx_nobuf++;	/* XXX not right */
+		return;
+	}
+	l2uf = mtod(m, struct l2_update_frame *);
+	eh = &l2uf->eh;
+	/* dst: Broadcast address */
+	IEEE80211_ADDR_COPY(eh->ether_dhost, ifp->if_broadcastaddr);
+	/* src: associated STA */
+	IEEE80211_ADDR_COPY(eh->ether_shost, ni->ni_macaddr);
+	eh->ether_type = htons(sizeof(*l2uf) - sizeof(*eh));
+	
+	l2uf->dsap = 0;
+	l2uf->ssap = 0;
+	l2uf->control = 0xf5;
+	l2uf->xid[0] = 0x81;
+	l2uf->xid[1] = 0x80;
+	l2uf->xid[2] = 0x00;
+	
+	m->m_pkthdr.len = m->m_len = sizeof(*l2uf);
+	hostap_deliver_data(vap, ni, m);
+}
+
+static void
+ratesetmismatch(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
+	int reassoc, int resp, const char *tag, int rate)
+{
+	IEEE80211_NOTE_MAC(ni->ni_vap, IEEE80211_MSG_ANY, wh->i_addr2,
+	    "deny %s request, %s rate set mismatch, rate/MCS %d",
+	    reassoc ? "reassoc" : "assoc", tag, rate & IEEE80211_RATE_VAL);
+	IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_BASIC_RATE);
+	ieee80211_node_leave(ni);
+}
+
+static void
+capinfomismatch(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
+	int reassoc, int resp, const char *tag, int capinfo)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+
+	IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ANY, wh->i_addr2,
+	    "deny %s request, %s mismatch 0x%x",
+	    reassoc ? "reassoc" : "assoc", tag, capinfo);
+	IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_CAPINFO);
+	ieee80211_node_leave(ni);
+	vap->iv_stats.is_rx_assoc_capmismatch++;
+}
+
+static void
+htcapmismatch(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
+	int reassoc, int resp)
+{
+	IEEE80211_NOTE_MAC(ni->ni_vap, IEEE80211_MSG_ANY, wh->i_addr2,
+	    "deny %s request, %s missing HT ie", reassoc ? "reassoc" : "assoc");
+	/* XXX no better code */
+	IEEE80211_SEND_MGMT(ni, resp, IEEE80211_STATUS_MISSING_HT_CAPS);
+	ieee80211_node_leave(ni);
+}
+
+static void
+authalgreject(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
+	int algo, int seq, int status)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+
+	IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
+	    wh, NULL, "unsupported alg %d", algo);
+	vap->iv_stats.is_rx_auth_unsupported++;
+	ieee80211_send_error(ni, wh->i_addr2, IEEE80211_FC0_SUBTYPE_AUTH,
+	    seq | (status << 16));
+}
+
+static __inline int
+ishtmixed(const uint8_t *ie)
+{
+	const struct ieee80211_ie_htinfo *ht =
+	    (const struct ieee80211_ie_htinfo *) ie;
+	return (ht->hi_byte2 & IEEE80211_HTINFO_OPMODE) ==
+	    IEEE80211_HTINFO_OPMODE_MIXED;
+}
+
+static int
+is11bclient(const uint8_t *rates, const uint8_t *xrates)
+{
+	static const uint32_t brates = (1<<2*1)|(1<<2*2)|(1<<11)|(1<<2*11);
+	int i;
+
+	/* NB: the 11b clients we care about will not have xrates */
+	if (xrates != NULL || rates == NULL)
+		return 0;
+	for (i = 0; i < rates[1]; i++) {
+		int r = rates[2+i] & IEEE80211_RATE_VAL;
+		if (r > 2*11 || ((1<<r) & brates) == 0)
+			return 0;
+	}
+	return 1;
+}
+
+static void
+hostap_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0,
+	int subtype, int rssi, int nf)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct ieee80211com *ic = ni->ni_ic;
+	struct ieee80211_frame *wh;
+	uint8_t *frm, *efrm, *sfrm;
+	uint8_t *ssid, *rates, *xrates, *wpa, *rsn, *wme, *ath, *htcap;
+	int reassoc, resp;
+	uint8_t rate;
+
+	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;
+		/*
+		 * We process beacon/probe response frames when scanning;
+		 * otherwise we check beacon frames for overlapping non-ERP
+		 * BSS in 11g and/or overlapping legacy BSS when in HT.
+		 */ 
+		if ((ic->ic_flags & IEEE80211_F_SCAN) == 0 &&
+		    subtype == IEEE80211_FC0_SUBTYPE_PROBE_RESP) {
+			vap->iv_stats.is_rx_mgtdiscard++;
+			return;
+		}
+		/* NB: accept off-channel frames */
+		if (ieee80211_parse_beacon(ni, m0, &scan) &~ IEEE80211_BPARSE_OFFCHAN)
+			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
+			IEEE80211_NODE_STAT(ni, rx_proberesp);
+		/*
+		 * If scanning, just pass information to the scan module.
+		 */
+		if (ic->ic_flags & IEEE80211_F_SCAN) {
+			if (scan.status == 0 &&		/* NB: on channel */
+			    (ic->ic_flags_ext & IEEE80211_FEXT_PROBECHAN)) {
+				/*
+				 * Actively scanning a channel marked passive;
+				 * send a probe request now that we know there
+				 * is 802.11 traffic present.
+				 *
+				 * XXX check if the beacon we recv'd gives
+				 * us what we need and suppress the probe req
+				 */
+				ieee80211_probe_curchan(vap, 1);
+				ic->ic_flags_ext &= ~IEEE80211_FEXT_PROBECHAN;
+			}
+			ieee80211_add_scan(vap, &scan, wh, subtype, rssi, nf);
+			return;
+		}
+		/*
+		 * Check beacon for overlapping bss w/ non ERP stations.
+		 * If we detect one and protection is configured but not
+		 * enabled, enable it and start a timer that'll bring us
+		 * out if we stop seeing the bss.
+		 */
+		if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
+		    scan.status == 0 &&			/* NB: on-channel */
+		    ((scan.erp & 0x100) == 0 ||		/* NB: no ERP, 11b sta*/
+		     (scan.erp & IEEE80211_ERP_NON_ERP_PRESENT))) {
+			ic->ic_lastnonerp = ticks;
+			ic->ic_flags_ext |= IEEE80211_FEXT_NONERP_PR;
+			if (ic->ic_protmode != IEEE80211_PROT_NONE &&
+			    (ic->ic_flags & IEEE80211_F_USEPROT) == 0) {
+				IEEE80211_NOTE_FRAME(vap,
+				    IEEE80211_MSG_ASSOC, wh,
+				    "non-ERP present on channel %d "
+				    "(saw erp 0x%x from channel %d), "
+				    "enable use of protection",
+				    ic->ic_curchan->ic_ieee,
+				    scan.erp, scan.chan);
+				ic->ic_flags |= IEEE80211_F_USEPROT;
+				ieee80211_notify_erp(ic);
+			}
+		}
+		/* 
+		 * Check beacon for non-HT station on HT channel
+		 * and update HT BSS occupancy as appropriate.
+		 */
+		if (IEEE80211_IS_CHAN_HT(ic->ic_curchan)) {
+			if (scan.status & IEEE80211_BPARSE_OFFCHAN) {
+				/*
+				 * Off control channel; only check frames
+				 * that come in the extension channel when
+				 * operating w/ HT40.
+				 */
+				if (!IEEE80211_IS_CHAN_HT40(ic->ic_curchan))
+					break;
+				if (scan.chan != ic->ic_curchan->ic_extieee)
+					break;
+			}
+			if (scan.htinfo == NULL) {
+				ieee80211_htprot_update(ic,
+				    IEEE80211_HTINFO_OPMODE_PROTOPT |
+				    IEEE80211_HTINFO_NONHT_PRESENT);
+			} else if (ishtmixed(scan.htinfo)) {
+				/* XXX? take NONHT_PRESENT from beacon? */
+				ieee80211_htprot_update(ic,
+				    IEEE80211_HTINFO_OPMODE_MIXED |
+				    IEEE80211_HTINFO_NONHT_PRESENT);
+			}
+		}
+		break;
+	}
+
+	case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
+		if (vap->iv_state != IEEE80211_S_RUN) {
+			vap->iv_stats.is_rx_mgtdiscard++;
+			return;
+		}
+		/*
+		 * prreq frame format
+		 *	[tlv] ssid
+		 *	[tlv] supported rates
+		 *	[tlv] extended supported rates
+		 */
+		ssid = rates = xrates = NULL;
+		sfrm = frm;
+		while (efrm - frm > 1) {
+			IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
+			switch (*frm) {
+			case IEEE80211_ELEMID_SSID:
+				ssid = frm;
+				break;
+			case IEEE80211_ELEMID_RATES:
+				rates = frm;
+				break;
+			case IEEE80211_ELEMID_XRATES:
+				xrates = frm;
+				break;
+			}
+			frm += frm[1] + 2;
+		}
+		IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return);
+		if (xrates != NULL)
+			IEEE80211_VERIFY_ELEMENT(xrates,
+				IEEE80211_RATE_MAXSIZE - rates[1], return);
+		IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return);
+		IEEE80211_VERIFY_SSID(vap->iv_bss, ssid, return);
+		if ((vap->iv_flags & IEEE80211_F_HIDESSID) && ssid[1] == 0) {
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
+			    wh, NULL,
+			    "%s", "no ssid with ssid suppression enabled");
+			vap->iv_stats.is_rx_ssidmismatch++; /*XXX*/
+			return;
+		}
+
+		/* XXX find a better class or define it's own */
+		IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_INPUT, wh->i_addr2,
+		    "%s", "recv probe req");
+		/*
+		 * Some legacy 11b clients cannot hack a complete
+		 * probe response frame.  When the request includes
+		 * only a bare-bones rate set, communicate this to
+		 * the transmit side.
+		 */
+		ieee80211_send_proberesp(vap, wh->i_addr2,
+		    is11bclient(rates, xrates) ? IEEE80211_SEND_LEGACY_11B : 0);
+		break;
+
+	case IEEE80211_FC0_SUBTYPE_AUTH: {
+		uint16_t algo, seq, status;
+
+		if (vap->iv_state != IEEE80211_S_RUN) {
+			vap->iv_stats.is_rx_mgtdiscard++;
+			return;
+		}
+		if (!IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_bss->ni_bssid)) {
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
+			    wh, NULL, "%s", "wrong bssid");
+			vap->iv_stats.is_rx_wrongbss++;	/*XXX unique stat?*/
+			return;
+		}
+		/*
+		 * auth frame format
+		 *	[2] algorithm
+		 *	[2] sequence
+		 *	[2] status
+		 *	[tlv*] challenge
+		 */
+		IEEE80211_VERIFY_LENGTH(efrm - frm, 6, return);
+		algo   = le16toh(*(uint16_t *)frm);
+		seq    = le16toh(*(uint16_t *)(frm + 2));
+		status = le16toh(*(uint16_t *)(frm + 4));
+		IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_AUTH, wh->i_addr2,
+		    "recv auth frame with algorithm %d seq %d", algo, seq);
+		/*
+		 * Consult the ACL policy module if setup.
+		 */
+		if (vap->iv_acl != NULL &&
+		    !vap->iv_acl->iac_check(vap, wh->i_addr2)) {
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_ACL,
+			    wh, NULL, "%s", "disallowed by ACL");
+			vap->iv_stats.is_rx_acl++;
+			ieee80211_send_error(ni, wh->i_addr2,
+			    IEEE80211_FC0_SUBTYPE_AUTH,
+			    (seq+1) | (IEEE80211_STATUS_UNSPECIFIED<<16));
+			return;
+		}
+		if (vap->iv_flags & IEEE80211_F_COUNTERM) {
+			IEEE80211_DISCARD(vap,
+			    IEEE80211_MSG_AUTH | IEEE80211_MSG_CRYPTO,
+			    wh, NULL, "%s", "TKIP countermeasures enabled");
+			vap->iv_stats.is_rx_auth_countermeasures++;
+			ieee80211_send_error(ni, wh->i_addr2,
+				IEEE80211_FC0_SUBTYPE_AUTH,
+				IEEE80211_REASON_MIC_FAILURE);
+			return;
+		}
+		if (algo == IEEE80211_AUTH_ALG_SHARED)
+			hostap_auth_shared(ni, wh, frm + 6, efrm, rssi, nf,
+			    seq, status);
+		else if (algo == IEEE80211_AUTH_ALG_OPEN)
+			hostap_auth_open(ni, wh, rssi, nf, seq, status);
+		else if (algo == IEEE80211_AUTH_ALG_LEAP) {
+			authalgreject(ni, wh, algo,
+			    seq+1, IEEE80211_STATUS_ALG);
+			return;
+		} else {
+			/*
+			 * We assume that an unknown algorithm is the result
+			 * of a decryption failure on a shared key auth frame;
+			 * return a status code appropriate for that instead
+			 * of IEEE80211_STATUS_ALG.
+			 *
+			 * NB: a seq# of 4 is intentional; the decrypted
+			 *     frame likely has a bogus seq value.
+			 */
+			authalgreject(ni, wh, algo,
+			    4, IEEE80211_STATUS_CHALLENGE);
+			return;
+		} 
+		break;
+	}
+
+	case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
+	case IEEE80211_FC0_SUBTYPE_REASSOC_REQ: {
+		uint16_t capinfo, lintval;
+		struct ieee80211_rsnparms rsnparms;
+
+		if (vap->iv_state != IEEE80211_S_RUN) {
+			vap->iv_stats.is_rx_mgtdiscard++;
+			return;
+		}
+		if (!IEEE80211_ADDR_EQ(wh->i_addr3, vap->iv_bss->ni_bssid)) {
+			IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
+			    wh, NULL, "%s", "wrong bssid");
+			vap->iv_stats.is_rx_assoc_bss++;
+			return;
+		}
+		if (subtype == IEEE80211_FC0_SUBTYPE_REASSOC_REQ) {
+			reassoc = 1;
+			resp = IEEE80211_FC0_SUBTYPE_REASSOC_RESP;
+		} else {
+			reassoc = 0;
+			resp = IEEE80211_FC0_SUBTYPE_ASSOC_RESP;
+		}
+		if (ni == vap->iv_bss) {
+			IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_ANY, wh->i_addr2,
+			    "deny %s request, sta not authenticated",
+			    reassoc ? "reassoc" : "assoc");
+			ieee80211_send_error(ni, wh->i_addr2,
+			    IEEE80211_FC0_SUBTYPE_DEAUTH,
+			    IEEE80211_REASON_ASSOC_NOT_AUTHED);
+			vap->iv_stats.is_rx_assoc_notauth++;
+			return;
+		}
+
+		/*
+		 * asreq frame format
+		 *	[2] capability information
+		 *	[2] listen interval
+		 *	[6*] current AP address (reassoc only)
+		 *	[tlv] ssid
+		 *	[tlv] supported rates
+		 *	[tlv] extended supported rates
+		 *	[tlv] WPA or RSN
+		 *	[tlv] HT capabilities
+		 *	[tlv] Atheros capabilities
+		 */
+		IEEE80211_VERIFY_LENGTH(efrm - frm, (reassoc ? 10 : 4), return);
+		capinfo = le16toh(*(uint16_t *)frm);	frm += 2;
+		lintval = le16toh(*(uint16_t *)frm);	frm += 2;
+		if (reassoc)
+			frm += 6;	/* ignore current AP info */
+		ssid = rates = xrates = wpa = rsn = wme = ath = htcap = NULL;
+		sfrm = frm;
+		while (efrm - frm > 1) {
+			IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return);
+			switch (*frm) {
+			case IEEE80211_ELEMID_SSID:
+				ssid = frm;
+				break;
+			case IEEE80211_ELEMID_RATES:
+				rates = frm;
+				break;
+			case IEEE80211_ELEMID_XRATES:
+				xrates = frm;
+				break;
+			case IEEE80211_ELEMID_RSN:
+				rsn = frm;
+				break;
+			case IEEE80211_ELEMID_HTCAP:
+				htcap = frm;
+				break;
+			case IEEE80211_ELEMID_VENDOR:
+				if (iswpaoui(frm))
+					wpa = frm;
+				else if (iswmeinfo(frm))
+					wme = frm;
+#ifdef IEEE80211_SUPPORT_SUPERG
+				else if (isatherosoui(frm))
+					ath = frm;
+#endif
+				else if (vap->iv_flags_ht & IEEE80211_FHT_HTCOMPAT) {
+					if (ishtcapoui(frm) && htcap == NULL)
+						htcap = frm;
+				}
+				break;
+			}
+			frm += frm[1] + 2;
+		}
+		IEEE80211_VERIFY_ELEMENT(rates, IEEE80211_RATE_MAXSIZE, return);
+		if (xrates != NULL)
+			IEEE80211_VERIFY_ELEMENT(xrates,
+				IEEE80211_RATE_MAXSIZE - rates[1], return);
+		IEEE80211_VERIFY_ELEMENT(ssid, IEEE80211_NWID_LEN, return);
+		IEEE80211_VERIFY_SSID(vap->iv_bss, ssid, return);
+		if (htcap != NULL) {
+			IEEE80211_VERIFY_LENGTH(htcap[1],
+			     htcap[0] == IEEE80211_ELEMID_VENDOR ?
+			         4 + sizeof(struct ieee80211_ie_htcap)-2 :
+			         sizeof(struct ieee80211_ie_htcap)-2,
+			     return);		/* XXX just NULL out? */
+		}
+
+		if ((vap->iv_flags & IEEE80211_F_WPA) &&
+		    !wpa_assocreq(ni, &rsnparms, wh, wpa, rsn, capinfo))
+			return;
+		/* discard challenge after association */
+		if (ni->ni_challenge != NULL) {
+			free(ni->ni_challenge, M_80211_NODE);
+			ni->ni_challenge = NULL;
+		}
+		/* NB: 802.11 spec says to ignore station's privacy bit */
+		if ((capinfo & IEEE80211_CAPINFO_ESS) == 0) {
+			capinfomismatch(ni, wh, reassoc, resp,
+			    "capability", capinfo);
+			return;
+		}
+		/*
+		 * Disallow re-associate w/ invalid slot time setting.
+		 */
+		if (ni->ni_associd != 0 &&
+		    IEEE80211_IS_CHAN_ANYG(ic->ic_bsschan) &&
+		    ((ni->ni_capinfo ^ capinfo) & IEEE80211_CAPINFO_SHORT_SLOTTIME)) {
+			capinfomismatch(ni, wh, reassoc, resp,
+			    "slot time", capinfo);
+			return;
+		}
+		rate = ieee80211_setup_rates(ni, rates, xrates,
+				IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
+				IEEE80211_F_DONEGO | IEEE80211_F_DODEL);
+		if (rate & IEEE80211_RATE_BASIC) {
+			ratesetmismatch(ni, wh, reassoc, resp, "legacy", rate);
+			vap->iv_stats.is_rx_assoc_norate++;
+			return;
+		}
+		/*
+		 * If constrained to 11g-only stations reject an
+		 * 11b-only station.  We cheat a bit here by looking
+		 * at the max negotiated xmit rate and assuming anyone
+		 * with a best rate <24Mb/s is an 11b station.
+		 */
+		if ((vap->iv_flags & IEEE80211_F_PUREG) && rate < 48) {
+			ratesetmismatch(ni, wh, reassoc, resp, "11g", rate);
+			vap->iv_stats.is_rx_assoc_norate++;
+			return;
+		}
+		/*
+		 * Do HT rate set handling and setup HT node state.
+		 */
+		ni->ni_chan = vap->iv_bss->ni_chan;
+		if (IEEE80211_IS_CHAN_HT(ni->ni_chan) && htcap != NULL) {
+			rate = ieee80211_setup_htrates(ni, htcap,
+				IEEE80211_F_DOFMCS | IEEE80211_F_DONEGO |
+				IEEE80211_F_DOBRS);
+			if (rate & IEEE80211_RATE_BASIC) {
+				ratesetmismatch(ni, wh, reassoc, resp,
+				    "HT", rate);
+				vap->iv_stats.is_ht_assoc_norate++;
+				return;
+			}
+			ieee80211_ht_node_init(ni);
+			ieee80211_ht_updatehtcap(ni, htcap);
+		} else if (ni->ni_flags & IEEE80211_NODE_HT)
+			ieee80211_ht_node_cleanup(ni);
+#ifdef IEEE80211_SUPPORT_SUPERG
+		else if (ni->ni_ath_flags & IEEE80211_NODE_ATH)
+			ieee80211_ff_node_cleanup(ni);
+#endif
+		/*
+		 * Allow AMPDU operation only with unencrypted traffic
+		 * or AES-CCM; the 11n spec only specifies these ciphers
+		 * so permitting any others is undefined and can lead
+		 * to interoperability problems.
+		 */
+		if ((ni->ni_flags & IEEE80211_NODE_HT) &&
+		    (((vap->iv_flags & IEEE80211_F_WPA) &&
+		      rsnparms.rsn_ucastcipher != IEEE80211_CIPHER_AES_CCM) ||
+		     (vap->iv_flags & (IEEE80211_F_WPA|IEEE80211_F_PRIVACY)) == IEEE80211_F_PRIVACY)) {
+			IEEE80211_NOTE(vap,
+			    IEEE80211_MSG_ASSOC | IEEE80211_MSG_11N, ni,
+			    "disallow HT use because WEP or TKIP requested, "
+			    "capinfo 0x%x ucastcipher %d", capinfo,
+			    rsnparms.rsn_ucastcipher);
+			ieee80211_ht_node_cleanup(ni);
+			vap->iv_stats.is_ht_assoc_downgrade++;
+		}
+		/*
+		 * If constrained to 11n-only stations reject legacy stations.
+		 */
+		if ((vap->iv_flags_ht & IEEE80211_FHT_PUREN) &&
+		    (ni->ni_flags & IEEE80211_NODE_HT) == 0) {
+			htcapmismatch(ni, wh, reassoc, resp);
+			vap->iv_stats.is_ht_assoc_nohtcap++;
+			return;
+		}
+		IEEE80211_RSSI_LPF(ni->ni_avgrssi, rssi);
+		ni->ni_noise = nf;
+		ni->ni_intval = lintval;
+		ni->ni_capinfo = capinfo;
+		ni->ni_fhdwell = vap->iv_bss->ni_fhdwell;
+		ni->ni_fhindex = vap->iv_bss->ni_fhindex;
+		/*
+		 * Store the IEs.
+		 * XXX maybe better to just expand
+		 */
+		if (ieee80211_ies_init(&ni->ni_ies, sfrm, efrm - sfrm)) {
+#define	setie(_ie, _off)	ieee80211_ies_setie(ni->ni_ies, _ie, _off)
+			if (wpa != NULL)
+				setie(wpa_ie, wpa - sfrm);
+			if (rsn != NULL)
+				setie(rsn_ie, rsn - sfrm);
+			if (htcap != NULL)
+				setie(htcap_ie, htcap - sfrm);
+			if (wme != NULL) {
+				setie(wme_ie, wme - sfrm);
+				/*
+				 * Mark node as capable of QoS.
+				 */
+				ni->ni_flags |= IEEE80211_NODE_QOS;
+			} else
+				ni->ni_flags &= ~IEEE80211_NODE_QOS;
+#ifdef IEEE80211_SUPPORT_SUPERG
+			if (ath != NULL) {
+				setie(ath_ie, ath - sfrm);
+				/* 
+				 * Parse ATH station parameters.
+				 */
+				ieee80211_parse_ath(ni, ni->ni_ies.ath_ie);
+			} else
+#endif
+				ni->ni_ath_flags = 0;
+#undef setie
+		} else {
+			ni->ni_flags &= ~IEEE80211_NODE_QOS;
+			ni->ni_ath_flags = 0;
+		}
+		ieee80211_node_join(ni, resp);
+		ieee80211_deliver_l2uf(ni);
+		break;
+	}
+
+	case IEEE80211_FC0_SUBTYPE_DEAUTH:
+	case IEEE80211_FC0_SUBTYPE_DISASSOC: {
+		uint16_t reason;
+
+		if (vap->iv_state != IEEE80211_S_RUN ||
+		    /* NB: can happen when in promiscuous mode */
+		    !IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr)) {
+			vap->iv_stats.is_rx_mgtdiscard++;
+			break;
+		}
+		/*
+		 * deauth/disassoc frame format
+		 *	[2] reason
+		 */
+		IEEE80211_VERIFY_LENGTH(efrm - frm, 2, return);
+		reason = le16toh(*(uint16_t *)frm);
+		if (subtype == IEEE80211_FC0_SUBTYPE_DEAUTH) {
+			vap->iv_stats.is_rx_deauth++;
+			IEEE80211_NODE_STAT(ni, rx_deauth);
+		} else {
+			vap->iv_stats.is_rx_disassoc++;
+			IEEE80211_NODE_STAT(ni, rx_disassoc);
+		}
+		IEEE80211_NOTE(vap, IEEE80211_MSG_AUTH, ni,
+		    "recv %s (reason %d)", ieee80211_mgt_subtype_name[subtype >>
+			IEEE80211_FC0_SUBTYPE_SHIFT], reason);
+		if (ni != vap->iv_bss)
+			ieee80211_node_leave(ni);
+		break;
+	}
+
+	case IEEE80211_FC0_SUBTYPE_ACTION:
+		if (vap->iv_state == IEEE80211_S_RUN) {
+			if (ieee80211_parse_action(ni, m0) == 0)
+				ic->ic_recv_action(ni, wh, frm, efrm);
+		} else
+			vap->iv_stats.is_rx_mgtdiscard++;
+		break;
+
+	case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
+	case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
+	default:
+		IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
+		     wh, "mgt", "subtype 0x%x not handled", subtype);
+		vap->iv_stats.is_rx_badsubtype++;
+		break;
+	}
+}
+
+static void
+hostap_recv_ctl(struct ieee80211_node *ni, struct mbuf *m, int subtype)
+{
+	switch (subtype) {
+	case IEEE80211_FC0_SUBTYPE_PS_POLL:
+		hostap_recv_pspoll(ni, m);
+		break;
+	case IEEE80211_FC0_SUBTYPE_BAR:
+		ieee80211_recv_bar(ni, m);
+		break;
+	}
+}
+
+/*
+ * Process a received ps-poll frame.
+ */
+static void
+hostap_recv_pspoll(struct ieee80211_node *ni, struct mbuf *m0)
+{
+	struct ieee80211vap *vap = ni->ni_vap;
+	struct ieee80211_frame_min *wh;
+	struct ifnet *ifp;
+	struct mbuf *m;
+	uint16_t aid;
+	int qlen;
+
+	wh = mtod(m0, struct ieee80211_frame_min *);
+	if (ni->ni_associd == 0) {
+		IEEE80211_DISCARD(vap,
+		    IEEE80211_MSG_POWER | IEEE80211_MSG_DEBUG,
+		    (struct ieee80211_frame *) wh, NULL,
+		    "%s", "unassociated station");
+		vap->iv_stats.is_ps_unassoc++;
+		IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
+			IEEE80211_REASON_NOT_ASSOCED);
+		return;
+	}
+
+	aid = le16toh(*(uint16_t *)wh->i_dur);
+	if (aid != ni->ni_associd) {
+		IEEE80211_DISCARD(vap,
+		    IEEE80211_MSG_POWER | IEEE80211_MSG_DEBUG,
+		    (struct ieee80211_frame *) wh, NULL,
+		    "aid mismatch: sta aid 0x%x poll aid 0x%x",
+		    ni->ni_associd, aid);
+		vap->iv_stats.is_ps_badaid++;
+		/*
+		 * NB: We used to deauth the station but it turns out
+		 * the Blackberry Curve 8230 (and perhaps other devices) 
+		 * sometimes send the wrong AID when WME is negotiated.
+		 * Being more lenient here seems ok as we already check
+		 * the station is associated and we only return frames
+		 * queued for the station (i.e. we don't use the AID).
+		 */
+		return;
+	}
+
+	/* Okay, take the first queued packet and put it out... */
+	m = ieee80211_node_psq_dequeue(ni, &qlen);
+	if (m == NULL) {
+		IEEE80211_NOTE_MAC(vap, IEEE80211_MSG_POWER, wh->i_addr2,
+		    "%s", "recv ps-poll, but queue empty");
+		ieee80211_send_nulldata(ieee80211_ref_node(ni));
+		vap->iv_stats.is_ps_qempty++;	/* XXX node stat */
+		if (vap->iv_set_tim != NULL)
+			vap->iv_set_tim(ni, 0);	/* just in case */
+		return;
+	}
+	/* 
+	 * If there are more packets, set the more packets bit
+	 * in the packet dispatched to the station; otherwise
+	 * turn off the TIM bit.
+	 */
+	if (qlen != 0) {
+		IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
+		    "recv ps-poll, send packet, %u still queued", qlen);
+		m->m_flags |= M_MORE_DATA;
+	} else {
+		IEEE80211_NOTE(vap, IEEE80211_MSG_POWER, ni,
+		    "%s", "recv ps-poll, send packet, queue empty");
+		if (vap->iv_set_tim != NULL)
+			vap->iv_set_tim(ni, 0);
+	}
+	m->m_flags |= M_PWR_SAV;		/* bypass PS handling */
+
+	if (m->m_flags & M_ENCAP)
+		ifp = vap->iv_ic->ic_ifp;
+	else
+		ifp = vap->iv_ifp;
+	IF_ENQUEUE(&ifp->if_snd, m);
+	if_start(ifp);
+}