f3f08e16a3
ieee80211_getqos() and reuse it in various places. Checked with RTL8188EE, HOSTAP mode + RTL8188CUS, STA mode. MFC after: 2 weeks
799 lines
23 KiB
C
799 lines
23 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2007-2008 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifdef __FreeBSD__
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__FBSDID("$FreeBSD$");
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#endif
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/*
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* IEEE 802.11 WDS mode support.
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*/
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#include "opt_inet.h"
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#include "opt_wlan.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/endian.h>
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#include <sys/errno.h>
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#include <sys/proc.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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#include <net/if_var.h>
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#include <net/if_media.h>
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#include <net/if_llc.h>
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#include <net/ethernet.h>
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#include <net/bpf.h>
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_wds.h>
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#include <net80211/ieee80211_input.h>
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#ifdef IEEE80211_SUPPORT_SUPERG
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#include <net80211/ieee80211_superg.h>
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#endif
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static void wds_vattach(struct ieee80211vap *);
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static int wds_newstate(struct ieee80211vap *, enum ieee80211_state, int);
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static int wds_input(struct ieee80211_node *ni, struct mbuf *m,
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const struct ieee80211_rx_stats *rxs, int, int);
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static void wds_recv_mgmt(struct ieee80211_node *, struct mbuf *, int subtype,
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const struct ieee80211_rx_stats *, int, int);
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void
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ieee80211_wds_attach(struct ieee80211com *ic)
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{
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ic->ic_vattach[IEEE80211_M_WDS] = wds_vattach;
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}
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void
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ieee80211_wds_detach(struct ieee80211com *ic)
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{
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}
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static void
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wds_vdetach(struct ieee80211vap *vap)
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{
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if (vap->iv_bss != NULL) {
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/* XXX locking? */
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if (vap->iv_bss->ni_wdsvap == vap)
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vap->iv_bss->ni_wdsvap = NULL;
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}
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}
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static void
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wds_vattach(struct ieee80211vap *vap)
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{
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vap->iv_newstate = wds_newstate;
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vap->iv_input = wds_input;
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vap->iv_recv_mgmt = wds_recv_mgmt;
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vap->iv_opdetach = wds_vdetach;
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}
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static void
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wds_flush(struct ieee80211_node *ni)
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{
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struct ieee80211com *ic = ni->ni_ic;
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struct mbuf *m, *next;
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int8_t rssi, nf;
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m = ieee80211_ageq_remove(&ic->ic_stageq,
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(void *)(uintptr_t) ieee80211_mac_hash(ic, ni->ni_macaddr));
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if (m == NULL)
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return;
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IEEE80211_NOTE(ni->ni_vap, IEEE80211_MSG_WDS, ni,
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"%s", "flush wds queue");
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ic->ic_node_getsignal(ni, &rssi, &nf);
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for (; m != NULL; m = next) {
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next = m->m_nextpkt;
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m->m_nextpkt = NULL;
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ieee80211_input(ni, m, rssi, nf);
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}
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}
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static int
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ieee80211_create_wds(struct ieee80211vap *vap, struct ieee80211_channel *chan)
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{
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struct ieee80211com *ic = vap->iv_ic;
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struct ieee80211_node_table *nt = &ic->ic_sta;
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struct ieee80211_node *ni, *obss;
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IEEE80211_DPRINTF(vap, IEEE80211_MSG_WDS,
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"%s: creating link to %s on channel %u\n", __func__,
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ether_sprintf(vap->iv_des_bssid), ieee80211_chan2ieee(ic, chan));
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/* NB: vap create must specify the bssid for the link */
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KASSERT(vap->iv_flags & IEEE80211_F_DESBSSID, ("no bssid"));
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/* NB: we should only be called on RUN transition */
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KASSERT(vap->iv_state == IEEE80211_S_RUN, ("!RUN state"));
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if ((vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) == 0) {
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/*
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* Dynamic/non-legacy WDS. Reference the associated
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* station specified by the desired bssid setup at vap
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* create. Point ni_wdsvap at the WDS vap so 4-address
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* frames received through the associated AP vap will
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* be dispatched upward (e.g. to a bridge) as though
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* they arrived on the WDS vap.
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*/
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IEEE80211_NODE_LOCK(nt);
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obss = NULL;
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ni = ieee80211_find_node_locked(&ic->ic_sta, vap->iv_des_bssid);
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if (ni == NULL) {
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/*
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* Node went away before we could hookup. This
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* should be ok; no traffic will flow and a leave
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* event will be dispatched that should cause
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* the vap to be destroyed.
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*/
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IEEE80211_DPRINTF(vap, IEEE80211_MSG_WDS,
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"%s: station %s went away\n",
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__func__, ether_sprintf(vap->iv_des_bssid));
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/* XXX stat? */
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} else if (ni->ni_wdsvap != NULL) {
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/*
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* Node already setup with a WDS vap; we cannot
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* allow multiple references so disallow. If
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* ni_wdsvap points at us that's ok; we should
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* do nothing anyway.
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*/
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/* XXX printf instead? */
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IEEE80211_DPRINTF(vap, IEEE80211_MSG_WDS,
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"%s: station %s in use with %s\n",
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__func__, ether_sprintf(vap->iv_des_bssid),
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ni->ni_wdsvap->iv_ifp->if_xname);
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/* XXX stat? */
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} else {
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/*
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* Committed to new node, setup state.
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*/
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obss = vap->iv_bss;
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vap->iv_bss = ni;
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ni->ni_wdsvap = vap;
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}
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IEEE80211_NODE_UNLOCK(nt);
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if (obss != NULL) {
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/* NB: deferred to avoid recursive lock */
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ieee80211_free_node(obss);
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}
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} else {
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/*
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* Legacy WDS vap setup.
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*/
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/*
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* The far end does not associate so we just create
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* create a new node and install it as the vap's
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* bss node. We must simulate an association and
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* authorize the port for traffic to flow.
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* XXX check if node already in sta table?
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*/
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ni = ieee80211_node_create_wds(vap, vap->iv_des_bssid, chan);
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if (ni != NULL) {
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obss = vap->iv_bss;
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vap->iv_bss = ieee80211_ref_node(ni);
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ni->ni_flags |= IEEE80211_NODE_AREF;
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if (obss != NULL)
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ieee80211_free_node(obss);
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/* give driver a chance to setup state like ni_txrate */
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if (ic->ic_newassoc != NULL)
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ic->ic_newassoc(ni, 1);
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/* tell the authenticator about new station */
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if (vap->iv_auth->ia_node_join != NULL)
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vap->iv_auth->ia_node_join(ni);
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if (ni->ni_authmode != IEEE80211_AUTH_8021X)
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ieee80211_node_authorize(ni);
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ieee80211_notify_node_join(ni, 1 /*newassoc*/);
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/* XXX inject l2uf frame */
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}
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}
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/*
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* Flush any pending frames now that were setup.
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*/
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if (ni != NULL)
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wds_flush(ni);
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return (ni == NULL ? ENOENT : 0);
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}
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/*
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* Propagate multicast frames of an ap vap to all DWDS links.
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* The caller is assumed to have verified this frame is multicast.
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*/
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void
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ieee80211_dwds_mcast(struct ieee80211vap *vap0, struct mbuf *m)
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{
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struct ieee80211com *ic = vap0->iv_ic;
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const struct ether_header *eh = mtod(m, const struct ether_header *);
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struct ieee80211_node *ni;
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struct ieee80211vap *vap;
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struct ifnet *ifp;
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struct mbuf *mcopy;
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int err;
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KASSERT(ETHER_IS_MULTICAST(eh->ether_dhost),
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("%s not mcast", ether_sprintf(eh->ether_dhost)));
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/* XXX locking */
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TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
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/* only DWDS vaps are interesting */
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if (vap->iv_opmode != IEEE80211_M_WDS ||
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(vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY))
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continue;
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/* if it came in this interface, don't send it back out */
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ifp = vap->iv_ifp;
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if (ifp == m->m_pkthdr.rcvif)
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continue;
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/*
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* Duplicate the frame and send it.
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*/
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mcopy = m_copypacket(m, M_NOWAIT);
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if (mcopy == NULL) {
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if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
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/* XXX stat + msg */
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continue;
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}
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ni = ieee80211_find_txnode(vap, eh->ether_dhost);
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if (ni == NULL) {
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/* NB: ieee80211_find_txnode does stat+msg */
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if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
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m_freem(mcopy);
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continue;
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}
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/* calculate priority so drivers can find the tx queue */
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if (ieee80211_classify(ni, mcopy)) {
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IEEE80211_DISCARD_MAC(vap,
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IEEE80211_MSG_OUTPUT | IEEE80211_MSG_WDS,
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eh->ether_dhost, NULL,
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"%s", "classification failure");
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vap->iv_stats.is_tx_classify++;
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if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
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m_freem(mcopy);
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ieee80211_free_node(ni);
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continue;
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}
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BPF_MTAP(ifp, m); /* 802.3 tx */
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/*
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* Encapsulate the packet in prep for transmission.
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*/
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IEEE80211_TX_LOCK(ic);
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mcopy = ieee80211_encap(vap, ni, mcopy);
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if (mcopy == NULL) {
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/* NB: stat+msg handled in ieee80211_encap */
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IEEE80211_TX_UNLOCK(ic);
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ieee80211_free_node(ni);
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continue;
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}
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mcopy->m_flags |= M_MCAST;
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mcopy->m_pkthdr.rcvif = (void *) ni;
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err = ieee80211_parent_xmitpkt(ic, mcopy);
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IEEE80211_TX_UNLOCK(ic);
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if (!err) {
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if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
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if_inc_counter(ifp, IFCOUNTER_OMCASTS, 1);
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if_inc_counter(ifp, IFCOUNTER_OBYTES,
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m->m_pkthdr.len);
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}
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}
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}
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|
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/*
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* Handle DWDS discovery on receipt of a 4-address frame in
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* ap mode. Queue the frame and post an event for someone
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* to plumb the necessary WDS vap for this station. Frames
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* received prior to the vap set running will then be reprocessed
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* as if they were just received.
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*/
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void
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ieee80211_dwds_discover(struct ieee80211_node *ni, struct mbuf *m)
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{
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struct ieee80211com *ic = ni->ni_ic;
|
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|
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/*
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* Save the frame with an aging interval 4 times
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* the listen interval specified by the station.
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* Frames that sit around too long are reclaimed
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* using this information.
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* XXX handle overflow?
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* XXX per/vap beacon interval?
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*/
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m->m_pkthdr.rcvif = (void *)(uintptr_t)
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ieee80211_mac_hash(ic, ni->ni_macaddr);
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(void) ieee80211_ageq_append(&ic->ic_stageq, m,
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((ni->ni_intval * ic->ic_lintval) << 2) / 1024);
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ieee80211_notify_wds_discover(ni);
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}
|
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|
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/*
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* IEEE80211_M_WDS vap state machine handler.
|
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*/
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static int
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wds_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
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{
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struct ieee80211com *ic = vap->iv_ic;
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enum ieee80211_state ostate;
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int error;
|
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|
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IEEE80211_LOCK_ASSERT(ic);
|
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|
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ostate = vap->iv_state;
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IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__,
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ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
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vap->iv_state = nstate; /* state transition */
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callout_stop(&vap->iv_mgtsend); /* XXX callout_drain */
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if (ostate != IEEE80211_S_SCAN)
|
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ieee80211_cancel_scan(vap); /* background scan */
|
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error = 0;
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switch (nstate) {
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case IEEE80211_S_INIT:
|
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switch (ostate) {
|
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case IEEE80211_S_SCAN:
|
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ieee80211_cancel_scan(vap);
|
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break;
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default:
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break;
|
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}
|
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if (ostate != IEEE80211_S_INIT) {
|
|
/* NB: optimize INIT -> INIT case */
|
|
ieee80211_reset_bss(vap);
|
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}
|
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break;
|
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case IEEE80211_S_SCAN:
|
|
switch (ostate) {
|
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case IEEE80211_S_INIT:
|
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ieee80211_check_scan_current(vap);
|
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break;
|
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default:
|
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break;
|
|
}
|
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break;
|
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case IEEE80211_S_RUN:
|
|
if (ostate == IEEE80211_S_INIT) {
|
|
/*
|
|
* Already have a channel; bypass the scan
|
|
* and startup immediately.
|
|
*/
|
|
error = ieee80211_create_wds(vap, ic->ic_curchan);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* 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
|
|
wds_input(struct ieee80211_node *ni, struct mbuf *m,
|
|
const struct ieee80211_rx_stats *rxs, int rssi, int nf)
|
|
{
|
|
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;
|
|
int is_hw_decrypted = 0;
|
|
int has_decrypted = 0;
|
|
|
|
/*
|
|
* Some devices do hardware decryption all the way through
|
|
* to pretending the frame wasn't encrypted in the first place.
|
|
* So, tag it appropriately so it isn't discarded inappropriately.
|
|
*/
|
|
if ((rxs != NULL) && (rxs->c_pktflags & IEEE80211_RX_F_DECRYPTED))
|
|
is_hw_decrypted = 1;
|
|
|
|
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"));
|
|
|
|
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 (!IEEE80211_IS_MULTICAST(wh->i_addr1))
|
|
ni->ni_inact = ni->ni_inact_reload;
|
|
|
|
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;
|
|
|
|
/* NB: WDS vap's do not scan */
|
|
if (m->m_pkthdr.len < sizeof(struct ieee80211_frame_addr4)) {
|
|
IEEE80211_DISCARD_MAC(vap,
|
|
IEEE80211_MSG_ANY, ni->ni_macaddr, NULL,
|
|
"too short (3): len %u", m->m_pkthdr.len);
|
|
vap->iv_stats.is_rx_tooshort++;
|
|
goto out;
|
|
}
|
|
/* NB: the TA is implicitly verified by finding the wds peer node */
|
|
if (!IEEE80211_ADDR_EQ(wh->i_addr1, vap->iv_myaddr) &&
|
|
!IEEE80211_ADDR_EQ(wh->i_addr1, ifp->if_broadcastaddr)) {
|
|
/* not interested in */
|
|
IEEE80211_DISCARD_MAC(vap, IEEE80211_MSG_INPUT,
|
|
wh->i_addr1, 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 (IEEE80211_HAS_SEQ(type, subtype)) {
|
|
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++;
|
|
if (! ieee80211_check_rxseq(ni, wh, wh->i_addr1, rxs))
|
|
goto out;
|
|
}
|
|
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_DSTODS) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, "data", "incorrect dir 0x%x", dir);
|
|
vap->iv_stats.is_rx_wrongdir++;
|
|
goto out;
|
|
}
|
|
/*
|
|
* Only legacy WDS traffic should take this path.
|
|
*/
|
|
if ((vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) == 0) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, "data", "%s", "not legacy wds");
|
|
vap->iv_stats.is_rx_wrongdir++;/*XXX*/
|
|
goto out;
|
|
}
|
|
/*
|
|
* 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, rxs) != 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 (is_hw_decrypted || wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
|
|
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;
|
|
}
|
|
if (ieee80211_crypto_decap(ni, m, hdrspace, &key) == 0) {
|
|
/* 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_PROTECTED;
|
|
has_decrypted = 1;
|
|
} 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 = ieee80211_getqos(wh)[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 (!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) &&
|
|
((has_decrypted == 0) && (m->m_flags & M_WEP) == 0) &&
|
|
(is_hw_decrypted == 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
|
|
}
|
|
ieee80211_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, "data", "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;
|
|
}
|
|
#ifdef IEEE80211_DEBUG
|
|
if (ieee80211_msg_debug(vap) || ieee80211_msg_dumppkts(vap)) {
|
|
if_printf(ifp, "received %s from %s rssi %d\n",
|
|
ieee80211_mgt_subtype_name(subtype),
|
|
ether_sprintf(wh->i_addr2), rssi);
|
|
}
|
|
#endif
|
|
if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "%s", "WEP set but not permitted");
|
|
vap->iv_stats.is_rx_mgtdiscard++; /* XXX */
|
|
goto out;
|
|
}
|
|
vap->iv_recv_mgmt(ni, m, subtype, rxs, rssi, nf);
|
|
goto out;
|
|
|
|
case IEEE80211_FC0_TYPE_CTL:
|
|
vap->iv_stats.is_rx_ctl++;
|
|
IEEE80211_NODE_STAT(ni, rx_ctrl);
|
|
goto out;
|
|
|
|
default:
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
|
|
wh, "bad", "frame type 0x%x", type);
|
|
/* should not come here */
|
|
break;
|
|
}
|
|
err:
|
|
if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
|
|
out:
|
|
if (m != NULL) {
|
|
if (need_tap && ieee80211_radiotap_active_vap(vap))
|
|
ieee80211_radiotap_rx(vap, m);
|
|
m_freem(m);
|
|
}
|
|
return type;
|
|
}
|
|
|
|
static void
|
|
wds_recv_mgmt(struct ieee80211_node *ni, struct mbuf *m0, int subtype,
|
|
const struct ieee80211_rx_stats *rxs, int rssi, int nf)
|
|
{
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
struct ieee80211_frame *wh;
|
|
u_int8_t *frm, *efrm;
|
|
|
|
wh = mtod(m0, struct ieee80211_frame *);
|
|
frm = (u_int8_t *)&wh[1];
|
|
efrm = mtod(m0, u_int8_t *) + m0->m_len;
|
|
switch (subtype) {
|
|
case IEEE80211_FC0_SUBTYPE_ACTION:
|
|
case IEEE80211_FC0_SUBTYPE_ACTION_NOACK:
|
|
if (ni == vap->iv_bss) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "%s", "unknown node");
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
} else if (!IEEE80211_ADDR_EQ(vap->iv_myaddr, wh->i_addr1)) {
|
|
/* NB: not interested in multicast frames. */
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "%s", "not for us");
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
} else if (vap->iv_state != IEEE80211_S_RUN) {
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "wrong state %s",
|
|
ieee80211_state_name[vap->iv_state]);
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
} else {
|
|
if (ieee80211_parse_action(ni, m0) == 0)
|
|
(void)ic->ic_recv_action(ni, wh, frm, efrm);
|
|
}
|
|
break;
|
|
|
|
case IEEE80211_FC0_SUBTYPE_ASSOC_REQ:
|
|
case IEEE80211_FC0_SUBTYPE_ASSOC_RESP:
|
|
case IEEE80211_FC0_SUBTYPE_REASSOC_REQ:
|
|
case IEEE80211_FC0_SUBTYPE_REASSOC_RESP:
|
|
case IEEE80211_FC0_SUBTYPE_PROBE_REQ:
|
|
case IEEE80211_FC0_SUBTYPE_PROBE_RESP:
|
|
case IEEE80211_FC0_SUBTYPE_TIMING_ADV:
|
|
case IEEE80211_FC0_SUBTYPE_BEACON:
|
|
case IEEE80211_FC0_SUBTYPE_ATIM:
|
|
case IEEE80211_FC0_SUBTYPE_DISASSOC:
|
|
case IEEE80211_FC0_SUBTYPE_AUTH:
|
|
case IEEE80211_FC0_SUBTYPE_DEAUTH:
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_INPUT,
|
|
wh, NULL, "%s", "not handled");
|
|
vap->iv_stats.is_rx_mgtdiscard++;
|
|
break;
|
|
|
|
default:
|
|
IEEE80211_DISCARD(vap, IEEE80211_MSG_ANY,
|
|
wh, "mgt", "subtype 0x%x not handled", subtype);
|
|
vap->iv_stats.is_rx_badsubtype++;
|
|
break;
|
|
}
|
|
}
|