dcc56af073
comlock, I'd like to find and analyse these cases to see if they really are valid. So, throw in a lock here and wait for the (hopefully!) inevitable complaints.
1942 lines
57 KiB
C
1942 lines
57 KiB
C
/*-
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* Copyright (c) 2001 Atsushi Onoe
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* Copyright (c) 2002-2008 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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__FBSDID("$FreeBSD$");
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/*
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* IEEE 802.11 protocol 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/kernel.h>
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#include <sys/systm.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <net/if.h>
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#include <net/if_media.h>
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#include <net/ethernet.h> /* XXX for ether_sprintf */
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#include <net80211/ieee80211_var.h>
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#include <net80211/ieee80211_adhoc.h>
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#include <net80211/ieee80211_sta.h>
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#include <net80211/ieee80211_hostap.h>
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#include <net80211/ieee80211_wds.h>
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#ifdef IEEE80211_SUPPORT_MESH
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#include <net80211/ieee80211_mesh.h>
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#endif
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#include <net80211/ieee80211_monitor.h>
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#include <net80211/ieee80211_input.h>
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/* XXX tunables */
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#define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */
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#define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */
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const char *ieee80211_mgt_subtype_name[] = {
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"assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp",
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"probe_req", "probe_resp", "reserved#6", "reserved#7",
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"beacon", "atim", "disassoc", "auth",
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"deauth", "action", "action_noack", "reserved#15"
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};
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const char *ieee80211_ctl_subtype_name[] = {
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"reserved#0", "reserved#1", "reserved#2", "reserved#3",
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"reserved#3", "reserved#5", "reserved#6", "reserved#7",
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"reserved#8", "reserved#9", "ps_poll", "rts",
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"cts", "ack", "cf_end", "cf_end_ack"
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};
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const char *ieee80211_opmode_name[IEEE80211_OPMODE_MAX] = {
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"IBSS", /* IEEE80211_M_IBSS */
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"STA", /* IEEE80211_M_STA */
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"WDS", /* IEEE80211_M_WDS */
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"AHDEMO", /* IEEE80211_M_AHDEMO */
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"HOSTAP", /* IEEE80211_M_HOSTAP */
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"MONITOR", /* IEEE80211_M_MONITOR */
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"MBSS" /* IEEE80211_M_MBSS */
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};
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const char *ieee80211_state_name[IEEE80211_S_MAX] = {
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"INIT", /* IEEE80211_S_INIT */
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"SCAN", /* IEEE80211_S_SCAN */
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"AUTH", /* IEEE80211_S_AUTH */
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"ASSOC", /* IEEE80211_S_ASSOC */
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"CAC", /* IEEE80211_S_CAC */
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"RUN", /* IEEE80211_S_RUN */
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"CSA", /* IEEE80211_S_CSA */
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"SLEEP", /* IEEE80211_S_SLEEP */
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};
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const char *ieee80211_wme_acnames[] = {
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"WME_AC_BE",
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"WME_AC_BK",
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"WME_AC_VI",
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"WME_AC_VO",
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"WME_UPSD",
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};
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static void beacon_miss(void *, int);
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static void beacon_swmiss(void *, int);
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static void parent_updown(void *, int);
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static void update_mcast(void *, int);
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static void update_promisc(void *, int);
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static void update_channel(void *, int);
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static void ieee80211_newstate_cb(void *, int);
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static int ieee80211_new_state_locked(struct ieee80211vap *,
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enum ieee80211_state, int);
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static int
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null_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
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const struct ieee80211_bpf_params *params)
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{
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struct ifnet *ifp = ni->ni_ic->ic_ifp;
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if_printf(ifp, "missing ic_raw_xmit callback, drop frame\n");
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m_freem(m);
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return ENETDOWN;
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}
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void
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ieee80211_proto_attach(struct ieee80211com *ic)
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{
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struct ifnet *ifp = ic->ic_ifp;
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/* override the 802.3 setting */
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ifp->if_hdrlen = ic->ic_headroom
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+ sizeof(struct ieee80211_qosframe_addr4)
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+ IEEE80211_WEP_IVLEN + IEEE80211_WEP_KIDLEN
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+ IEEE80211_WEP_EXTIVLEN;
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/* XXX no way to recalculate on ifdetach */
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if (ALIGN(ifp->if_hdrlen) > max_linkhdr) {
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/* XXX sanity check... */
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max_linkhdr = ALIGN(ifp->if_hdrlen);
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max_hdr = max_linkhdr + max_protohdr;
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max_datalen = MHLEN - max_hdr;
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}
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ic->ic_protmode = IEEE80211_PROT_CTSONLY;
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TASK_INIT(&ic->ic_parent_task, 0, parent_updown, ifp);
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TASK_INIT(&ic->ic_mcast_task, 0, update_mcast, ic);
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TASK_INIT(&ic->ic_promisc_task, 0, update_promisc, ic);
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TASK_INIT(&ic->ic_chan_task, 0, update_channel, ic);
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TASK_INIT(&ic->ic_bmiss_task, 0, beacon_miss, ic);
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ic->ic_wme.wme_hipri_switch_hysteresis =
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AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
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/* initialize management frame handlers */
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ic->ic_send_mgmt = ieee80211_send_mgmt;
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ic->ic_raw_xmit = null_raw_xmit;
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ieee80211_adhoc_attach(ic);
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ieee80211_sta_attach(ic);
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ieee80211_wds_attach(ic);
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ieee80211_hostap_attach(ic);
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#ifdef IEEE80211_SUPPORT_MESH
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ieee80211_mesh_attach(ic);
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#endif
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ieee80211_monitor_attach(ic);
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}
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void
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ieee80211_proto_detach(struct ieee80211com *ic)
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{
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ieee80211_monitor_detach(ic);
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#ifdef IEEE80211_SUPPORT_MESH
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ieee80211_mesh_detach(ic);
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#endif
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ieee80211_hostap_detach(ic);
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ieee80211_wds_detach(ic);
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ieee80211_adhoc_detach(ic);
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ieee80211_sta_detach(ic);
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}
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static void
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null_update_beacon(struct ieee80211vap *vap, int item)
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{
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}
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void
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ieee80211_proto_vattach(struct ieee80211vap *vap)
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{
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struct ieee80211com *ic = vap->iv_ic;
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struct ifnet *ifp = vap->iv_ifp;
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int i;
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/* override the 802.3 setting */
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ifp->if_hdrlen = ic->ic_ifp->if_hdrlen;
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vap->iv_rtsthreshold = IEEE80211_RTS_DEFAULT;
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vap->iv_fragthreshold = IEEE80211_FRAG_DEFAULT;
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vap->iv_bmiss_max = IEEE80211_BMISS_MAX;
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callout_init_mtx(&vap->iv_swbmiss, IEEE80211_LOCK_OBJ(ic), 0);
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callout_init(&vap->iv_mgtsend, CALLOUT_MPSAFE);
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TASK_INIT(&vap->iv_nstate_task, 0, ieee80211_newstate_cb, vap);
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TASK_INIT(&vap->iv_swbmiss_task, 0, beacon_swmiss, vap);
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/*
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* Install default tx rate handling: no fixed rate, lowest
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* supported rate for mgmt and multicast frames. Default
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* max retry count. These settings can be changed by the
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* driver and/or user applications.
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*/
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for (i = IEEE80211_MODE_11A; i < IEEE80211_MODE_MAX; i++) {
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const struct ieee80211_rateset *rs = &ic->ic_sup_rates[i];
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vap->iv_txparms[i].ucastrate = IEEE80211_FIXED_RATE_NONE;
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/*
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* Setting the management rate to MCS 0 assumes that the
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* BSS Basic rate set is empty and the BSS Basic MCS set
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* is not.
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*
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* Since we're not checking this, default to the lowest
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* defined rate for this mode.
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*
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* At least one 11n AP (DLINK DIR-825) is reported to drop
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* some MCS management traffic (eg BA response frames.)
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*
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* See also: 9.6.0 of the 802.11n-2009 specification.
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*/
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#ifdef NOTYET
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if (i == IEEE80211_MODE_11NA || i == IEEE80211_MODE_11NG) {
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vap->iv_txparms[i].mgmtrate = 0 | IEEE80211_RATE_MCS;
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vap->iv_txparms[i].mcastrate = 0 | IEEE80211_RATE_MCS;
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} else {
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vap->iv_txparms[i].mgmtrate =
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rs->rs_rates[0] & IEEE80211_RATE_VAL;
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vap->iv_txparms[i].mcastrate =
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rs->rs_rates[0] & IEEE80211_RATE_VAL;
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}
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#endif
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vap->iv_txparms[i].mgmtrate = rs->rs_rates[0] & IEEE80211_RATE_VAL;
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vap->iv_txparms[i].mcastrate = rs->rs_rates[0] & IEEE80211_RATE_VAL;
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vap->iv_txparms[i].maxretry = IEEE80211_TXMAX_DEFAULT;
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}
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vap->iv_roaming = IEEE80211_ROAMING_AUTO;
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vap->iv_update_beacon = null_update_beacon;
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vap->iv_deliver_data = ieee80211_deliver_data;
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/* attach support for operating mode */
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ic->ic_vattach[vap->iv_opmode](vap);
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}
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void
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ieee80211_proto_vdetach(struct ieee80211vap *vap)
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{
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#define FREEAPPIE(ie) do { \
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if (ie != NULL) \
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free(ie, M_80211_NODE_IE); \
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} while (0)
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/*
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* Detach operating mode module.
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*/
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if (vap->iv_opdetach != NULL)
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vap->iv_opdetach(vap);
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/*
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* This should not be needed as we detach when reseting
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* the state but be conservative here since the
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* authenticator may do things like spawn kernel threads.
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*/
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if (vap->iv_auth->ia_detach != NULL)
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vap->iv_auth->ia_detach(vap);
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/*
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* Detach any ACL'ator.
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*/
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if (vap->iv_acl != NULL)
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vap->iv_acl->iac_detach(vap);
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FREEAPPIE(vap->iv_appie_beacon);
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FREEAPPIE(vap->iv_appie_probereq);
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FREEAPPIE(vap->iv_appie_proberesp);
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FREEAPPIE(vap->iv_appie_assocreq);
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FREEAPPIE(vap->iv_appie_assocresp);
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FREEAPPIE(vap->iv_appie_wpa);
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#undef FREEAPPIE
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}
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/*
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* Simple-minded authenticator module support.
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*/
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#define IEEE80211_AUTH_MAX (IEEE80211_AUTH_WPA+1)
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/* XXX well-known names */
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static const char *auth_modnames[IEEE80211_AUTH_MAX] = {
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"wlan_internal", /* IEEE80211_AUTH_NONE */
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"wlan_internal", /* IEEE80211_AUTH_OPEN */
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"wlan_internal", /* IEEE80211_AUTH_SHARED */
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"wlan_xauth", /* IEEE80211_AUTH_8021X */
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"wlan_internal", /* IEEE80211_AUTH_AUTO */
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"wlan_xauth", /* IEEE80211_AUTH_WPA */
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};
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static const struct ieee80211_authenticator *authenticators[IEEE80211_AUTH_MAX];
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static const struct ieee80211_authenticator auth_internal = {
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.ia_name = "wlan_internal",
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.ia_attach = NULL,
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.ia_detach = NULL,
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.ia_node_join = NULL,
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.ia_node_leave = NULL,
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};
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/*
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* Setup internal authenticators once; they are never unregistered.
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*/
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static void
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ieee80211_auth_setup(void)
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{
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ieee80211_authenticator_register(IEEE80211_AUTH_OPEN, &auth_internal);
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ieee80211_authenticator_register(IEEE80211_AUTH_SHARED, &auth_internal);
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ieee80211_authenticator_register(IEEE80211_AUTH_AUTO, &auth_internal);
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}
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SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL);
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const struct ieee80211_authenticator *
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ieee80211_authenticator_get(int auth)
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{
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if (auth >= IEEE80211_AUTH_MAX)
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return NULL;
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if (authenticators[auth] == NULL)
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ieee80211_load_module(auth_modnames[auth]);
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return authenticators[auth];
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}
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void
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ieee80211_authenticator_register(int type,
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const struct ieee80211_authenticator *auth)
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{
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if (type >= IEEE80211_AUTH_MAX)
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return;
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authenticators[type] = auth;
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}
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void
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ieee80211_authenticator_unregister(int type)
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{
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if (type >= IEEE80211_AUTH_MAX)
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return;
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authenticators[type] = NULL;
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}
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/*
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* Very simple-minded ACL module support.
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*/
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/* XXX just one for now */
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static const struct ieee80211_aclator *acl = NULL;
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void
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ieee80211_aclator_register(const struct ieee80211_aclator *iac)
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{
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printf("wlan: %s acl policy registered\n", iac->iac_name);
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acl = iac;
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}
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void
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ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
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{
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if (acl == iac)
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acl = NULL;
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printf("wlan: %s acl policy unregistered\n", iac->iac_name);
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}
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const struct ieee80211_aclator *
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ieee80211_aclator_get(const char *name)
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{
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if (acl == NULL)
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ieee80211_load_module("wlan_acl");
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return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
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}
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void
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ieee80211_print_essid(const uint8_t *essid, int len)
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{
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const uint8_t *p;
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int i;
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if (len > IEEE80211_NWID_LEN)
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len = IEEE80211_NWID_LEN;
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/* determine printable or not */
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for (i = 0, p = essid; i < len; i++, p++) {
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if (*p < ' ' || *p > 0x7e)
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break;
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}
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if (i == len) {
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printf("\"");
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for (i = 0, p = essid; i < len; i++, p++)
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printf("%c", *p);
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printf("\"");
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} else {
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printf("0x");
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for (i = 0, p = essid; i < len; i++, p++)
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printf("%02x", *p);
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}
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}
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void
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ieee80211_dump_pkt(struct ieee80211com *ic,
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const uint8_t *buf, int len, int rate, int rssi)
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{
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const struct ieee80211_frame *wh;
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int i;
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wh = (const struct ieee80211_frame *)buf;
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switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
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case IEEE80211_FC1_DIR_NODS:
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printf("NODS %s", ether_sprintf(wh->i_addr2));
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printf("->%s", ether_sprintf(wh->i_addr1));
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printf("(%s)", ether_sprintf(wh->i_addr3));
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break;
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case IEEE80211_FC1_DIR_TODS:
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printf("TODS %s", ether_sprintf(wh->i_addr2));
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printf("->%s", ether_sprintf(wh->i_addr3));
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printf("(%s)", ether_sprintf(wh->i_addr1));
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break;
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case IEEE80211_FC1_DIR_FROMDS:
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printf("FRDS %s", ether_sprintf(wh->i_addr3));
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printf("->%s", ether_sprintf(wh->i_addr1));
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printf("(%s)", ether_sprintf(wh->i_addr2));
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break;
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case IEEE80211_FC1_DIR_DSTODS:
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printf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1]));
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printf("->%s", ether_sprintf(wh->i_addr3));
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printf("(%s", ether_sprintf(wh->i_addr2));
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printf("->%s)", ether_sprintf(wh->i_addr1));
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break;
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}
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switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
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case IEEE80211_FC0_TYPE_DATA:
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printf(" data");
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break;
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case IEEE80211_FC0_TYPE_MGT:
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printf(" %s", ieee80211_mgt_subtype_name[
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(wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
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>> IEEE80211_FC0_SUBTYPE_SHIFT]);
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break;
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default:
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printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
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break;
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}
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if (IEEE80211_QOS_HAS_SEQ(wh)) {
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const struct ieee80211_qosframe *qwh =
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(const struct ieee80211_qosframe *)buf;
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printf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID,
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qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : "");
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}
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if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
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int off;
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off = ieee80211_anyhdrspace(ic, wh);
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printf(" WEP [IV %.02x %.02x %.02x",
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buf[off+0], buf[off+1], buf[off+2]);
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if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV)
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|
printf(" %.02x %.02x %.02x",
|
|
buf[off+4], buf[off+5], buf[off+6]);
|
|
printf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6);
|
|
}
|
|
if (rate >= 0)
|
|
printf(" %dM", rate / 2);
|
|
if (rssi >= 0)
|
|
printf(" +%d", rssi);
|
|
printf("\n");
|
|
if (len > 0) {
|
|
for (i = 0; i < len; i++) {
|
|
if ((i & 1) == 0)
|
|
printf(" ");
|
|
printf("%02x", buf[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
static __inline int
|
|
findrix(const struct ieee80211_rateset *rs, int r)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < rs->rs_nrates; i++)
|
|
if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
ieee80211_fix_rate(struct ieee80211_node *ni,
|
|
struct ieee80211_rateset *nrs, int flags)
|
|
{
|
|
#define RV(v) ((v) & IEEE80211_RATE_VAL)
|
|
struct ieee80211vap *vap = ni->ni_vap;
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
int i, j, rix, error;
|
|
int okrate, badrate, fixedrate, ucastrate;
|
|
const struct ieee80211_rateset *srs;
|
|
uint8_t r;
|
|
|
|
error = 0;
|
|
okrate = badrate = 0;
|
|
ucastrate = vap->iv_txparms[ieee80211_chan2mode(ni->ni_chan)].ucastrate;
|
|
if (ucastrate != IEEE80211_FIXED_RATE_NONE) {
|
|
/*
|
|
* Workaround awkwardness with fixed rate. We are called
|
|
* to check both the legacy rate set and the HT rate set
|
|
* but we must apply any legacy fixed rate check only to the
|
|
* legacy rate set and vice versa. We cannot tell what type
|
|
* of rate set we've been given (legacy or HT) but we can
|
|
* distinguish the fixed rate type (MCS have 0x80 set).
|
|
* So to deal with this the caller communicates whether to
|
|
* check MCS or legacy rate using the flags and we use the
|
|
* type of any fixed rate to avoid applying an MCS to a
|
|
* legacy rate and vice versa.
|
|
*/
|
|
if (ucastrate & 0x80) {
|
|
if (flags & IEEE80211_F_DOFRATE)
|
|
flags &= ~IEEE80211_F_DOFRATE;
|
|
} else if ((ucastrate & 0x80) == 0) {
|
|
if (flags & IEEE80211_F_DOFMCS)
|
|
flags &= ~IEEE80211_F_DOFMCS;
|
|
}
|
|
/* NB: required to make MCS match below work */
|
|
ucastrate &= IEEE80211_RATE_VAL;
|
|
}
|
|
fixedrate = IEEE80211_FIXED_RATE_NONE;
|
|
/*
|
|
* XXX we are called to process both MCS and legacy rates;
|
|
* we must use the appropriate basic rate set or chaos will
|
|
* ensue; for now callers that want MCS must supply
|
|
* IEEE80211_F_DOBRS; at some point we'll need to split this
|
|
* function so there are two variants, one for MCS and one
|
|
* for legacy rates.
|
|
*/
|
|
if (flags & IEEE80211_F_DOBRS)
|
|
srs = (const struct ieee80211_rateset *)
|
|
ieee80211_get_suphtrates(ic, ni->ni_chan);
|
|
else
|
|
srs = ieee80211_get_suprates(ic, ni->ni_chan);
|
|
for (i = 0; i < nrs->rs_nrates; ) {
|
|
if (flags & IEEE80211_F_DOSORT) {
|
|
/*
|
|
* Sort rates.
|
|
*/
|
|
for (j = i + 1; j < nrs->rs_nrates; j++) {
|
|
if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
|
|
r = nrs->rs_rates[i];
|
|
nrs->rs_rates[i] = nrs->rs_rates[j];
|
|
nrs->rs_rates[j] = r;
|
|
}
|
|
}
|
|
}
|
|
r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
|
|
badrate = r;
|
|
/*
|
|
* Check for fixed rate.
|
|
*/
|
|
if (r == ucastrate)
|
|
fixedrate = r;
|
|
/*
|
|
* Check against supported rates.
|
|
*/
|
|
rix = findrix(srs, r);
|
|
if (flags & IEEE80211_F_DONEGO) {
|
|
if (rix < 0) {
|
|
/*
|
|
* A rate in the node's rate set is not
|
|
* supported. If this is a basic rate and we
|
|
* are operating as a STA then this is an error.
|
|
* Otherwise we just discard/ignore the rate.
|
|
*/
|
|
if ((flags & IEEE80211_F_JOIN) &&
|
|
(nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
|
|
error++;
|
|
} else if ((flags & IEEE80211_F_JOIN) == 0) {
|
|
/*
|
|
* Overwrite with the supported rate
|
|
* value so any basic rate bit is set.
|
|
*/
|
|
nrs->rs_rates[i] = srs->rs_rates[rix];
|
|
}
|
|
}
|
|
if ((flags & IEEE80211_F_DODEL) && rix < 0) {
|
|
/*
|
|
* Delete unacceptable rates.
|
|
*/
|
|
nrs->rs_nrates--;
|
|
for (j = i; j < nrs->rs_nrates; j++)
|
|
nrs->rs_rates[j] = nrs->rs_rates[j + 1];
|
|
nrs->rs_rates[j] = 0;
|
|
continue;
|
|
}
|
|
if (rix >= 0)
|
|
okrate = nrs->rs_rates[i];
|
|
i++;
|
|
}
|
|
if (okrate == 0 || error != 0 ||
|
|
((flags & (IEEE80211_F_DOFRATE|IEEE80211_F_DOFMCS)) &&
|
|
fixedrate != ucastrate)) {
|
|
IEEE80211_NOTE(vap, IEEE80211_MSG_XRATE | IEEE80211_MSG_11N, ni,
|
|
"%s: flags 0x%x okrate %d error %d fixedrate 0x%x "
|
|
"ucastrate %x\n", __func__, fixedrate, ucastrate, flags);
|
|
return badrate | IEEE80211_RATE_BASIC;
|
|
} else
|
|
return RV(okrate);
|
|
#undef RV
|
|
}
|
|
|
|
/*
|
|
* Reset 11g-related state.
|
|
*/
|
|
void
|
|
ieee80211_reset_erp(struct ieee80211com *ic)
|
|
{
|
|
ic->ic_flags &= ~IEEE80211_F_USEPROT;
|
|
ic->ic_nonerpsta = 0;
|
|
ic->ic_longslotsta = 0;
|
|
/*
|
|
* Short slot time is enabled only when operating in 11g
|
|
* and not in an IBSS. We must also honor whether or not
|
|
* the driver is capable of doing it.
|
|
*/
|
|
ieee80211_set_shortslottime(ic,
|
|
IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
|
|
IEEE80211_IS_CHAN_HT(ic->ic_curchan) ||
|
|
(IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
|
|
ic->ic_opmode == IEEE80211_M_HOSTAP &&
|
|
(ic->ic_caps & IEEE80211_C_SHSLOT)));
|
|
/*
|
|
* Set short preamble and ERP barker-preamble flags.
|
|
*/
|
|
if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
|
|
(ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
|
|
ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
|
|
ic->ic_flags &= ~IEEE80211_F_USEBARKER;
|
|
} else {
|
|
ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
|
|
ic->ic_flags |= IEEE80211_F_USEBARKER;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set the short slot time state and notify the driver.
|
|
*/
|
|
void
|
|
ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
|
|
{
|
|
if (onoff)
|
|
ic->ic_flags |= IEEE80211_F_SHSLOT;
|
|
else
|
|
ic->ic_flags &= ~IEEE80211_F_SHSLOT;
|
|
/* notify driver */
|
|
if (ic->ic_updateslot != NULL)
|
|
ic->ic_updateslot(ic->ic_ifp);
|
|
}
|
|
|
|
/*
|
|
* Check if the specified rate set supports ERP.
|
|
* NB: the rate set is assumed to be sorted.
|
|
*/
|
|
int
|
|
ieee80211_iserp_rateset(const struct ieee80211_rateset *rs)
|
|
{
|
|
#define N(a) (sizeof(a) / sizeof(a[0]))
|
|
static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
|
|
int i, j;
|
|
|
|
if (rs->rs_nrates < N(rates))
|
|
return 0;
|
|
for (i = 0; i < N(rates); i++) {
|
|
for (j = 0; j < rs->rs_nrates; j++) {
|
|
int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
|
|
if (rates[i] == r)
|
|
goto next;
|
|
if (r > rates[i])
|
|
return 0;
|
|
}
|
|
return 0;
|
|
next:
|
|
;
|
|
}
|
|
return 1;
|
|
#undef N
|
|
}
|
|
|
|
/*
|
|
* Mark the basic rates for the rate table based on the
|
|
* operating mode. For real 11g we mark all the 11b rates
|
|
* and 6, 12, and 24 OFDM. For 11b compatibility we mark only
|
|
* 11b rates. There's also a pseudo 11a-mode used to mark only
|
|
* the basic OFDM rates.
|
|
*/
|
|
static void
|
|
setbasicrates(struct ieee80211_rateset *rs,
|
|
enum ieee80211_phymode mode, int add)
|
|
{
|
|
static const struct ieee80211_rateset basic[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_11A] = { 3, { 12, 24, 48 } },
|
|
[IEEE80211_MODE_11B] = { 2, { 2, 4 } },
|
|
/* NB: mixed b/g */
|
|
[IEEE80211_MODE_11G] = { 4, { 2, 4, 11, 22 } },
|
|
[IEEE80211_MODE_TURBO_A] = { 3, { 12, 24, 48 } },
|
|
[IEEE80211_MODE_TURBO_G] = { 4, { 2, 4, 11, 22 } },
|
|
[IEEE80211_MODE_STURBO_A] = { 3, { 12, 24, 48 } },
|
|
[IEEE80211_MODE_HALF] = { 3, { 6, 12, 24 } },
|
|
[IEEE80211_MODE_QUARTER] = { 3, { 3, 6, 12 } },
|
|
[IEEE80211_MODE_11NA] = { 3, { 12, 24, 48 } },
|
|
/* NB: mixed b/g */
|
|
[IEEE80211_MODE_11NG] = { 4, { 2, 4, 11, 22 } },
|
|
};
|
|
int i, j;
|
|
|
|
for (i = 0; i < rs->rs_nrates; i++) {
|
|
if (!add)
|
|
rs->rs_rates[i] &= IEEE80211_RATE_VAL;
|
|
for (j = 0; j < basic[mode].rs_nrates; j++)
|
|
if (basic[mode].rs_rates[j] == rs->rs_rates[i]) {
|
|
rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set the basic rates in a rate set.
|
|
*/
|
|
void
|
|
ieee80211_setbasicrates(struct ieee80211_rateset *rs,
|
|
enum ieee80211_phymode mode)
|
|
{
|
|
setbasicrates(rs, mode, 0);
|
|
}
|
|
|
|
/*
|
|
* Add basic rates to a rate set.
|
|
*/
|
|
void
|
|
ieee80211_addbasicrates(struct ieee80211_rateset *rs,
|
|
enum ieee80211_phymode mode)
|
|
{
|
|
setbasicrates(rs, mode, 1);
|
|
}
|
|
|
|
/*
|
|
* WME protocol support.
|
|
*
|
|
* The default 11a/b/g/n parameters come from the WiFi Alliance WMM
|
|
* System Interopability Test Plan (v1.4, Appendix F) and the 802.11n
|
|
* Draft 2.0 Test Plan (Appendix D).
|
|
*
|
|
* Static/Dynamic Turbo mode settings come from Atheros.
|
|
*/
|
|
typedef struct phyParamType {
|
|
uint8_t aifsn;
|
|
uint8_t logcwmin;
|
|
uint8_t logcwmax;
|
|
uint16_t txopLimit;
|
|
uint8_t acm;
|
|
} paramType;
|
|
|
|
static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_11A] = { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_11B] = { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_11G] = { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_FH] = { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_TURBO_A]= { 2, 3, 5, 0, 0 },
|
|
[IEEE80211_MODE_TURBO_G]= { 2, 3, 5, 0, 0 },
|
|
[IEEE80211_MODE_STURBO_A]={ 2, 3, 5, 0, 0 },
|
|
[IEEE80211_MODE_HALF] = { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_QUARTER]= { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_11NA] = { 3, 4, 6, 0, 0 },
|
|
[IEEE80211_MODE_11NG] = { 3, 4, 6, 0, 0 },
|
|
};
|
|
static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11A] = { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11B] = { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11G] = { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_FH] = { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_TURBO_A]= { 7, 3, 10, 0, 0 },
|
|
[IEEE80211_MODE_TURBO_G]= { 7, 3, 10, 0, 0 },
|
|
[IEEE80211_MODE_STURBO_A]={ 7, 3, 10, 0, 0 },
|
|
[IEEE80211_MODE_HALF] = { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_QUARTER]= { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11NA] = { 7, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11NG] = { 7, 4, 10, 0, 0 },
|
|
};
|
|
static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 1, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11A] = { 1, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11B] = { 1, 3, 4, 188, 0 },
|
|
[IEEE80211_MODE_11G] = { 1, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_FH] = { 1, 3, 4, 188, 0 },
|
|
[IEEE80211_MODE_TURBO_A]= { 1, 2, 3, 94, 0 },
|
|
[IEEE80211_MODE_TURBO_G]= { 1, 2, 3, 94, 0 },
|
|
[IEEE80211_MODE_STURBO_A]={ 1, 2, 3, 94, 0 },
|
|
[IEEE80211_MODE_HALF] = { 1, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_QUARTER]= { 1, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11NA] = { 1, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11NG] = { 1, 3, 4, 94, 0 },
|
|
};
|
|
static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 1, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11A] = { 1, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11B] = { 1, 2, 3, 102, 0 },
|
|
[IEEE80211_MODE_11G] = { 1, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_FH] = { 1, 2, 3, 102, 0 },
|
|
[IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 },
|
|
[IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 },
|
|
[IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 },
|
|
[IEEE80211_MODE_HALF] = { 1, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_QUARTER]= { 1, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11NA] = { 1, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11NG] = { 1, 2, 3, 47, 0 },
|
|
};
|
|
|
|
static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11A] = { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11B] = { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11G] = { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_FH] = { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_TURBO_A]= { 2, 3, 10, 0, 0 },
|
|
[IEEE80211_MODE_TURBO_G]= { 2, 3, 10, 0, 0 },
|
|
[IEEE80211_MODE_STURBO_A]={ 2, 3, 10, 0, 0 },
|
|
[IEEE80211_MODE_HALF] = { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_QUARTER]= { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11NA] = { 3, 4, 10, 0, 0 },
|
|
[IEEE80211_MODE_11NG] = { 3, 4, 10, 0, 0 },
|
|
};
|
|
static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 2, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11A] = { 2, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11B] = { 2, 3, 4, 188, 0 },
|
|
[IEEE80211_MODE_11G] = { 2, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_FH] = { 2, 3, 4, 188, 0 },
|
|
[IEEE80211_MODE_TURBO_A]= { 2, 2, 3, 94, 0 },
|
|
[IEEE80211_MODE_TURBO_G]= { 2, 2, 3, 94, 0 },
|
|
[IEEE80211_MODE_STURBO_A]={ 2, 2, 3, 94, 0 },
|
|
[IEEE80211_MODE_HALF] = { 2, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_QUARTER]= { 2, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11NA] = { 2, 3, 4, 94, 0 },
|
|
[IEEE80211_MODE_11NG] = { 2, 3, 4, 94, 0 },
|
|
};
|
|
static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 2, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11A] = { 2, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11B] = { 2, 2, 3, 102, 0 },
|
|
[IEEE80211_MODE_11G] = { 2, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_FH] = { 2, 2, 3, 102, 0 },
|
|
[IEEE80211_MODE_TURBO_A]= { 1, 2, 2, 47, 0 },
|
|
[IEEE80211_MODE_TURBO_G]= { 1, 2, 2, 47, 0 },
|
|
[IEEE80211_MODE_STURBO_A]={ 1, 2, 2, 47, 0 },
|
|
[IEEE80211_MODE_HALF] = { 2, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_QUARTER]= { 2, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11NA] = { 2, 2, 3, 47, 0 },
|
|
[IEEE80211_MODE_11NG] = { 2, 2, 3, 47, 0 },
|
|
};
|
|
|
|
static void
|
|
_setifsparams(struct wmeParams *wmep, const paramType *phy)
|
|
{
|
|
wmep->wmep_aifsn = phy->aifsn;
|
|
wmep->wmep_logcwmin = phy->logcwmin;
|
|
wmep->wmep_logcwmax = phy->logcwmax;
|
|
wmep->wmep_txopLimit = phy->txopLimit;
|
|
}
|
|
|
|
static void
|
|
setwmeparams(struct ieee80211vap *vap, const char *type, int ac,
|
|
struct wmeParams *wmep, const paramType *phy)
|
|
{
|
|
wmep->wmep_acm = phy->acm;
|
|
_setifsparams(wmep, phy);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
|
|
"set %s (%s) [acm %u aifsn %u logcwmin %u logcwmax %u txop %u]\n",
|
|
ieee80211_wme_acnames[ac], type,
|
|
wmep->wmep_acm, wmep->wmep_aifsn, wmep->wmep_logcwmin,
|
|
wmep->wmep_logcwmax, wmep->wmep_txopLimit);
|
|
}
|
|
|
|
static void
|
|
ieee80211_wme_initparams_locked(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
const paramType *pPhyParam, *pBssPhyParam;
|
|
struct wmeParams *wmep;
|
|
enum ieee80211_phymode mode;
|
|
int i;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
if ((ic->ic_caps & IEEE80211_C_WME) == 0 || ic->ic_nrunning > 1)
|
|
return;
|
|
|
|
/*
|
|
* Clear the wme cap_info field so a qoscount from a previous
|
|
* vap doesn't confuse later code which only parses the beacon
|
|
* field and updates hardware when said field changes.
|
|
* Otherwise the hardware is programmed with defaults, not what
|
|
* the beacon actually announces.
|
|
*/
|
|
wme->wme_wmeChanParams.cap_info = 0;
|
|
|
|
/*
|
|
* Select mode; we can be called early in which case we
|
|
* always use auto mode. We know we'll be called when
|
|
* entering the RUN state with bsschan setup properly
|
|
* so state will eventually get set correctly
|
|
*/
|
|
if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
|
|
mode = ieee80211_chan2mode(ic->ic_bsschan);
|
|
else
|
|
mode = IEEE80211_MODE_AUTO;
|
|
for (i = 0; i < WME_NUM_AC; i++) {
|
|
switch (i) {
|
|
case WME_AC_BK:
|
|
pPhyParam = &phyParamForAC_BK[mode];
|
|
pBssPhyParam = &phyParamForAC_BK[mode];
|
|
break;
|
|
case WME_AC_VI:
|
|
pPhyParam = &phyParamForAC_VI[mode];
|
|
pBssPhyParam = &bssPhyParamForAC_VI[mode];
|
|
break;
|
|
case WME_AC_VO:
|
|
pPhyParam = &phyParamForAC_VO[mode];
|
|
pBssPhyParam = &bssPhyParamForAC_VO[mode];
|
|
break;
|
|
case WME_AC_BE:
|
|
default:
|
|
pPhyParam = &phyParamForAC_BE[mode];
|
|
pBssPhyParam = &bssPhyParamForAC_BE[mode];
|
|
break;
|
|
}
|
|
wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
|
|
if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
|
|
setwmeparams(vap, "chan", i, wmep, pPhyParam);
|
|
} else {
|
|
setwmeparams(vap, "chan", i, wmep, pBssPhyParam);
|
|
}
|
|
wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
|
|
setwmeparams(vap, "bss ", i, wmep, pBssPhyParam);
|
|
}
|
|
/* NB: check ic_bss to avoid NULL deref on initial attach */
|
|
if (vap->iv_bss != NULL) {
|
|
/*
|
|
* Calculate agressive mode switching threshold based
|
|
* on beacon interval. This doesn't need locking since
|
|
* we're only called before entering the RUN state at
|
|
* which point we start sending beacon frames.
|
|
*/
|
|
wme->wme_hipri_switch_thresh =
|
|
(HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100;
|
|
wme->wme_flags &= ~WME_F_AGGRMODE;
|
|
ieee80211_wme_updateparams(vap);
|
|
}
|
|
}
|
|
|
|
void
|
|
ieee80211_wme_initparams(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
ieee80211_wme_initparams_locked(vap);
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
/*
|
|
* Update WME parameters for ourself and the BSS.
|
|
*/
|
|
void
|
|
ieee80211_wme_updateparams_locked(struct ieee80211vap *vap)
|
|
{
|
|
static const paramType aggrParam[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = { 2, 4, 10, 64, 0 },
|
|
[IEEE80211_MODE_11A] = { 2, 4, 10, 64, 0 },
|
|
[IEEE80211_MODE_11B] = { 2, 5, 10, 64, 0 },
|
|
[IEEE80211_MODE_11G] = { 2, 4, 10, 64, 0 },
|
|
[IEEE80211_MODE_FH] = { 2, 5, 10, 64, 0 },
|
|
[IEEE80211_MODE_TURBO_A] = { 1, 3, 10, 64, 0 },
|
|
[IEEE80211_MODE_TURBO_G] = { 1, 3, 10, 64, 0 },
|
|
[IEEE80211_MODE_STURBO_A] = { 1, 3, 10, 64, 0 },
|
|
[IEEE80211_MODE_HALF] = { 2, 4, 10, 64, 0 },
|
|
[IEEE80211_MODE_QUARTER] = { 2, 4, 10, 64, 0 },
|
|
[IEEE80211_MODE_11NA] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
|
|
[IEEE80211_MODE_11NG] = { 2, 4, 10, 64, 0 }, /* XXXcheck*/
|
|
};
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
const struct wmeParams *wmep;
|
|
struct wmeParams *chanp, *bssp;
|
|
enum ieee80211_phymode mode;
|
|
int i;
|
|
|
|
/*
|
|
* Set up the channel access parameters for the physical
|
|
* device. First populate the configured settings.
|
|
*/
|
|
for (i = 0; i < WME_NUM_AC; i++) {
|
|
chanp = &wme->wme_chanParams.cap_wmeParams[i];
|
|
wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
|
|
chanp->wmep_aifsn = wmep->wmep_aifsn;
|
|
chanp->wmep_logcwmin = wmep->wmep_logcwmin;
|
|
chanp->wmep_logcwmax = wmep->wmep_logcwmax;
|
|
chanp->wmep_txopLimit = wmep->wmep_txopLimit;
|
|
|
|
chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
|
|
wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
|
|
chanp->wmep_aifsn = wmep->wmep_aifsn;
|
|
chanp->wmep_logcwmin = wmep->wmep_logcwmin;
|
|
chanp->wmep_logcwmax = wmep->wmep_logcwmax;
|
|
chanp->wmep_txopLimit = wmep->wmep_txopLimit;
|
|
}
|
|
|
|
/*
|
|
* Select mode; we can be called early in which case we
|
|
* always use auto mode. We know we'll be called when
|
|
* entering the RUN state with bsschan setup properly
|
|
* so state will eventually get set correctly
|
|
*/
|
|
if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
|
|
mode = ieee80211_chan2mode(ic->ic_bsschan);
|
|
else
|
|
mode = IEEE80211_MODE_AUTO;
|
|
|
|
/*
|
|
* This implements agressive mode as found in certain
|
|
* vendors' AP's. When there is significant high
|
|
* priority (VI/VO) traffic in the BSS throttle back BE
|
|
* traffic by using conservative parameters. Otherwise
|
|
* BE uses agressive params to optimize performance of
|
|
* legacy/non-QoS traffic.
|
|
*/
|
|
if ((vap->iv_opmode == IEEE80211_M_HOSTAP &&
|
|
(wme->wme_flags & WME_F_AGGRMODE) != 0) ||
|
|
(vap->iv_opmode == IEEE80211_M_STA &&
|
|
(vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0) ||
|
|
(vap->iv_flags & IEEE80211_F_WME) == 0) {
|
|
chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
|
|
bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
|
|
|
|
chanp->wmep_aifsn = bssp->wmep_aifsn = aggrParam[mode].aifsn;
|
|
chanp->wmep_logcwmin = bssp->wmep_logcwmin =
|
|
aggrParam[mode].logcwmin;
|
|
chanp->wmep_logcwmax = bssp->wmep_logcwmax =
|
|
aggrParam[mode].logcwmax;
|
|
chanp->wmep_txopLimit = bssp->wmep_txopLimit =
|
|
(vap->iv_flags & IEEE80211_F_BURST) ?
|
|
aggrParam[mode].txopLimit : 0;
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
|
|
"update %s (chan+bss) [acm %u aifsn %u logcwmin %u "
|
|
"logcwmax %u txop %u]\n", ieee80211_wme_acnames[WME_AC_BE],
|
|
chanp->wmep_acm, chanp->wmep_aifsn, chanp->wmep_logcwmin,
|
|
chanp->wmep_logcwmax, chanp->wmep_txopLimit);
|
|
}
|
|
|
|
if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
|
|
ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) != 0) {
|
|
static const uint8_t logCwMin[IEEE80211_MODE_MAX] = {
|
|
[IEEE80211_MODE_AUTO] = 3,
|
|
[IEEE80211_MODE_11A] = 3,
|
|
[IEEE80211_MODE_11B] = 4,
|
|
[IEEE80211_MODE_11G] = 3,
|
|
[IEEE80211_MODE_FH] = 4,
|
|
[IEEE80211_MODE_TURBO_A] = 3,
|
|
[IEEE80211_MODE_TURBO_G] = 3,
|
|
[IEEE80211_MODE_STURBO_A] = 3,
|
|
[IEEE80211_MODE_HALF] = 3,
|
|
[IEEE80211_MODE_QUARTER] = 3,
|
|
[IEEE80211_MODE_11NA] = 3,
|
|
[IEEE80211_MODE_11NG] = 3,
|
|
};
|
|
chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
|
|
bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
|
|
|
|
chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode];
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
|
|
"update %s (chan+bss) logcwmin %u\n",
|
|
ieee80211_wme_acnames[WME_AC_BE], chanp->wmep_logcwmin);
|
|
}
|
|
if (vap->iv_opmode == IEEE80211_M_HOSTAP) { /* XXX ibss? */
|
|
/*
|
|
* Arrange for a beacon update and bump the parameter
|
|
* set number so associated stations load the new values.
|
|
*/
|
|
wme->wme_bssChanParams.cap_info =
|
|
(wme->wme_bssChanParams.cap_info+1) & WME_QOSINFO_COUNT;
|
|
ieee80211_beacon_notify(vap, IEEE80211_BEACON_WME);
|
|
}
|
|
|
|
wme->wme_update(ic);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_WME,
|
|
"%s: WME params updated, cap_info 0x%x\n", __func__,
|
|
vap->iv_opmode == IEEE80211_M_STA ?
|
|
wme->wme_wmeChanParams.cap_info :
|
|
wme->wme_bssChanParams.cap_info);
|
|
}
|
|
|
|
void
|
|
ieee80211_wme_updateparams(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
|
|
if (ic->ic_caps & IEEE80211_C_WME) {
|
|
IEEE80211_LOCK(ic);
|
|
ieee80211_wme_updateparams_locked(vap);
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
}
|
|
|
|
static void
|
|
parent_updown(void *arg, int npending)
|
|
{
|
|
struct ifnet *parent = arg;
|
|
|
|
parent->if_ioctl(parent, SIOCSIFFLAGS, NULL);
|
|
}
|
|
|
|
static void
|
|
update_mcast(void *arg, int npending)
|
|
{
|
|
struct ieee80211com *ic = arg;
|
|
struct ifnet *parent = ic->ic_ifp;
|
|
|
|
ic->ic_update_mcast(parent);
|
|
}
|
|
|
|
static void
|
|
update_promisc(void *arg, int npending)
|
|
{
|
|
struct ieee80211com *ic = arg;
|
|
struct ifnet *parent = ic->ic_ifp;
|
|
|
|
ic->ic_update_promisc(parent);
|
|
}
|
|
|
|
static void
|
|
update_channel(void *arg, int npending)
|
|
{
|
|
struct ieee80211com *ic = arg;
|
|
|
|
ic->ic_set_channel(ic);
|
|
ieee80211_radiotap_chan_change(ic);
|
|
}
|
|
|
|
/*
|
|
* Block until the parent is in a known state. This is
|
|
* used after any operations that dispatch a task (e.g.
|
|
* to auto-configure the parent device up/down).
|
|
*/
|
|
void
|
|
ieee80211_waitfor_parent(struct ieee80211com *ic)
|
|
{
|
|
taskqueue_block(ic->ic_tq);
|
|
ieee80211_draintask(ic, &ic->ic_parent_task);
|
|
ieee80211_draintask(ic, &ic->ic_mcast_task);
|
|
ieee80211_draintask(ic, &ic->ic_promisc_task);
|
|
ieee80211_draintask(ic, &ic->ic_chan_task);
|
|
ieee80211_draintask(ic, &ic->ic_bmiss_task);
|
|
taskqueue_unblock(ic->ic_tq);
|
|
}
|
|
|
|
/*
|
|
* Start a vap running. If this is the first vap to be
|
|
* set running on the underlying device then we
|
|
* automatically bring the device up.
|
|
*/
|
|
void
|
|
ieee80211_start_locked(struct ieee80211vap *vap)
|
|
{
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ifnet *parent = ic->ic_ifp;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"start running, %d vaps running\n", ic->ic_nrunning);
|
|
|
|
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
|
|
/*
|
|
* Mark us running. Note that it's ok to do this first;
|
|
* if we need to bring the parent device up we defer that
|
|
* to avoid dropping the com lock. We expect the device
|
|
* to respond to being marked up by calling back into us
|
|
* through ieee80211_start_all at which point we'll come
|
|
* back in here and complete the work.
|
|
*/
|
|
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
|
/*
|
|
* We are not running; if this we are the first vap
|
|
* to be brought up auto-up the parent if necessary.
|
|
*/
|
|
if (ic->ic_nrunning++ == 0 &&
|
|
(parent->if_drv_flags & IFF_DRV_RUNNING) == 0) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"%s: up parent %s\n", __func__, parent->if_xname);
|
|
parent->if_flags |= IFF_UP;
|
|
ieee80211_runtask(ic, &ic->ic_parent_task);
|
|
return;
|
|
}
|
|
}
|
|
/*
|
|
* If the parent is up and running, then kick the
|
|
* 802.11 state machine as appropriate.
|
|
*/
|
|
if ((parent->if_drv_flags & IFF_DRV_RUNNING) &&
|
|
vap->iv_roaming != IEEE80211_ROAMING_MANUAL) {
|
|
if (vap->iv_opmode == IEEE80211_M_STA) {
|
|
#if 0
|
|
/* XXX bypasses scan too easily; disable for now */
|
|
/*
|
|
* Try to be intelligent about clocking the state
|
|
* machine. If we're currently in RUN state then
|
|
* we should be able to apply any new state/parameters
|
|
* simply by re-associating. Otherwise we need to
|
|
* re-scan to select an appropriate ap.
|
|
*/
|
|
if (vap->iv_state >= IEEE80211_S_RUN)
|
|
ieee80211_new_state_locked(vap,
|
|
IEEE80211_S_ASSOC, 1);
|
|
else
|
|
#endif
|
|
ieee80211_new_state_locked(vap,
|
|
IEEE80211_S_SCAN, 0);
|
|
} else {
|
|
/*
|
|
* For monitor+wds mode there's nothing to do but
|
|
* start running. Otherwise if this is the first
|
|
* vap to be brought up, start a scan which may be
|
|
* preempted if the station is locked to a particular
|
|
* channel.
|
|
*/
|
|
vap->iv_flags_ext |= IEEE80211_FEXT_REINIT;
|
|
if (vap->iv_opmode == IEEE80211_M_MONITOR ||
|
|
vap->iv_opmode == IEEE80211_M_WDS)
|
|
ieee80211_new_state_locked(vap,
|
|
IEEE80211_S_RUN, -1);
|
|
else
|
|
ieee80211_new_state_locked(vap,
|
|
IEEE80211_S_SCAN, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Start a single vap.
|
|
*/
|
|
void
|
|
ieee80211_init(void *arg)
|
|
{
|
|
struct ieee80211vap *vap = arg;
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"%s\n", __func__);
|
|
|
|
IEEE80211_LOCK(vap->iv_ic);
|
|
ieee80211_start_locked(vap);
|
|
IEEE80211_UNLOCK(vap->iv_ic);
|
|
}
|
|
|
|
/*
|
|
* Start all runnable vap's on a device.
|
|
*/
|
|
void
|
|
ieee80211_start_all(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */
|
|
ieee80211_start_locked(vap);
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
/*
|
|
* Stop a vap. We force it down using the state machine
|
|
* then mark it's ifnet not running. If this is the last
|
|
* vap running on the underlying device then we close it
|
|
* too to insure it will be properly initialized when the
|
|
* next vap is brought up.
|
|
*/
|
|
void
|
|
ieee80211_stop_locked(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
struct ifnet *parent = ic->ic_ifp;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"stop running, %d vaps running\n", ic->ic_nrunning);
|
|
|
|
ieee80211_new_state_locked(vap, IEEE80211_S_INIT, -1);
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
|
|
ifp->if_drv_flags &= ~IFF_DRV_RUNNING; /* mark us stopped */
|
|
if (--ic->ic_nrunning == 0 &&
|
|
(parent->if_drv_flags & IFF_DRV_RUNNING)) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"down parent %s\n", parent->if_xname);
|
|
parent->if_flags &= ~IFF_UP;
|
|
ieee80211_runtask(ic, &ic->ic_parent_task);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
ieee80211_stop(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
ieee80211_stop_locked(vap);
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
/*
|
|
* Stop all vap's running on a device.
|
|
*/
|
|
void
|
|
ieee80211_stop_all(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
if (IFNET_IS_UP_RUNNING(ifp)) /* NB: avoid recursion */
|
|
ieee80211_stop_locked(vap);
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
|
|
ieee80211_waitfor_parent(ic);
|
|
}
|
|
|
|
/*
|
|
* Stop all vap's running on a device and arrange
|
|
* for those that were running to be resumed.
|
|
*/
|
|
void
|
|
ieee80211_suspend_all(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
if (IFNET_IS_UP_RUNNING(ifp)) { /* NB: avoid recursion */
|
|
vap->iv_flags_ext |= IEEE80211_FEXT_RESUME;
|
|
ieee80211_stop_locked(vap);
|
|
}
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
|
|
ieee80211_waitfor_parent(ic);
|
|
}
|
|
|
|
/*
|
|
* Start all vap's marked for resume.
|
|
*/
|
|
void
|
|
ieee80211_resume_all(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
struct ifnet *ifp = vap->iv_ifp;
|
|
if (!IFNET_IS_UP_RUNNING(ifp) &&
|
|
(vap->iv_flags_ext & IEEE80211_FEXT_RESUME)) {
|
|
vap->iv_flags_ext &= ~IEEE80211_FEXT_RESUME;
|
|
ieee80211_start_locked(vap);
|
|
}
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
void
|
|
ieee80211_beacon_miss(struct ieee80211com *ic)
|
|
{
|
|
IEEE80211_LOCK(ic);
|
|
if ((ic->ic_flags & IEEE80211_F_SCAN) == 0) {
|
|
/* Process in a taskq, the handler may reenter the driver */
|
|
ieee80211_runtask(ic, &ic->ic_bmiss_task);
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
static void
|
|
beacon_miss(void *arg, int npending)
|
|
{
|
|
struct ieee80211com *ic = arg;
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
/*
|
|
* We only pass events through for sta vap's in RUN state;
|
|
* may be too restrictive but for now this saves all the
|
|
* handlers duplicating these checks.
|
|
*/
|
|
if (vap->iv_opmode == IEEE80211_M_STA &&
|
|
vap->iv_state >= IEEE80211_S_RUN &&
|
|
vap->iv_bmiss != NULL)
|
|
vap->iv_bmiss(vap);
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
static void
|
|
beacon_swmiss(void *arg, int npending)
|
|
{
|
|
struct ieee80211vap *vap = arg;
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
if (vap->iv_state == IEEE80211_S_RUN) {
|
|
/* XXX Call multiple times if npending > zero? */
|
|
vap->iv_bmiss(vap);
|
|
}
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
/*
|
|
* Software beacon miss handling. Check if any beacons
|
|
* were received in the last period. If not post a
|
|
* beacon miss; otherwise reset the counter.
|
|
*/
|
|
void
|
|
ieee80211_swbmiss(void *arg)
|
|
{
|
|
struct ieee80211vap *vap = arg;
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
/* XXX sleep state? */
|
|
KASSERT(vap->iv_state == IEEE80211_S_RUN,
|
|
("wrong state %d", vap->iv_state));
|
|
|
|
if (ic->ic_flags & IEEE80211_F_SCAN) {
|
|
/*
|
|
* If scanning just ignore and reset state. If we get a
|
|
* bmiss after coming out of scan because we haven't had
|
|
* time to receive a beacon then we should probe the AP
|
|
* before posting a real bmiss (unless iv_bmiss_max has
|
|
* been artifiically lowered). A cleaner solution might
|
|
* be to disable the timer on scan start/end but to handle
|
|
* case of multiple sta vap's we'd need to disable the
|
|
* timers of all affected vap's.
|
|
*/
|
|
vap->iv_swbmiss_count = 0;
|
|
} else if (vap->iv_swbmiss_count == 0) {
|
|
if (vap->iv_bmiss != NULL)
|
|
ieee80211_runtask(ic, &vap->iv_swbmiss_task);
|
|
} else
|
|
vap->iv_swbmiss_count = 0;
|
|
callout_reset(&vap->iv_swbmiss, vap->iv_swbmiss_period,
|
|
ieee80211_swbmiss, vap);
|
|
}
|
|
|
|
/*
|
|
* Start an 802.11h channel switch. We record the parameters,
|
|
* mark the operation pending, notify each vap through the
|
|
* beacon update mechanism so it can update the beacon frame
|
|
* contents, and then switch vap's to CSA state to block outbound
|
|
* traffic. Devices that handle CSA directly can use the state
|
|
* switch to do the right thing so long as they call
|
|
* ieee80211_csa_completeswitch when it's time to complete the
|
|
* channel change. Devices that depend on the net80211 layer can
|
|
* use ieee80211_beacon_update to handle the countdown and the
|
|
* channel switch.
|
|
*/
|
|
void
|
|
ieee80211_csa_startswitch(struct ieee80211com *ic,
|
|
struct ieee80211_channel *c, int mode, int count)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
ic->ic_csa_newchan = c;
|
|
ic->ic_csa_mode = mode;
|
|
ic->ic_csa_count = count;
|
|
ic->ic_flags |= IEEE80211_F_CSAPENDING;
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
if (vap->iv_opmode == IEEE80211_M_HOSTAP ||
|
|
vap->iv_opmode == IEEE80211_M_IBSS ||
|
|
vap->iv_opmode == IEEE80211_M_MBSS)
|
|
ieee80211_beacon_notify(vap, IEEE80211_BEACON_CSA);
|
|
/* switch to CSA state to block outbound traffic */
|
|
if (vap->iv_state == IEEE80211_S_RUN)
|
|
ieee80211_new_state_locked(vap, IEEE80211_S_CSA, 0);
|
|
}
|
|
ieee80211_notify_csa(ic, c, mode, count);
|
|
}
|
|
|
|
/*
|
|
* Complete the channel switch by transitioning all CSA VAPs to RUN.
|
|
* This is called by both the completion and cancellation functions
|
|
* so each VAP is placed back in the RUN state and can thus transmit.
|
|
*/
|
|
static void
|
|
csa_completeswitch(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
ic->ic_csa_newchan = NULL;
|
|
ic->ic_flags &= ~IEEE80211_F_CSAPENDING;
|
|
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
|
|
if (vap->iv_state == IEEE80211_S_CSA)
|
|
ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0);
|
|
}
|
|
|
|
/*
|
|
* Complete an 802.11h channel switch started by ieee80211_csa_startswitch.
|
|
* We clear state and move all vap's in CSA state to RUN state
|
|
* so they can again transmit.
|
|
*
|
|
* Although this may not be completely correct, update the BSS channel
|
|
* for each VAP to the newly configured channel. The setcurchan sets
|
|
* the current operating channel for the interface (so the radio does
|
|
* switch over) but the VAP BSS isn't updated, leading to incorrectly
|
|
* reported information via ioctl.
|
|
*/
|
|
void
|
|
ieee80211_csa_completeswitch(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
KASSERT(ic->ic_flags & IEEE80211_F_CSAPENDING, ("csa not pending"));
|
|
|
|
ieee80211_setcurchan(ic, ic->ic_csa_newchan);
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
|
|
if (vap->iv_state == IEEE80211_S_CSA)
|
|
vap->iv_bss->ni_chan = ic->ic_curchan;
|
|
|
|
csa_completeswitch(ic);
|
|
}
|
|
|
|
/*
|
|
* Cancel an 802.11h channel switch started by ieee80211_csa_startswitch.
|
|
* We clear state and move all vap's in CSA state to RUN state
|
|
* so they can again transmit.
|
|
*/
|
|
void
|
|
ieee80211_csa_cancelswitch(struct ieee80211com *ic)
|
|
{
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
csa_completeswitch(ic);
|
|
}
|
|
|
|
/*
|
|
* Complete a DFS CAC started by ieee80211_dfs_cac_start.
|
|
* We clear state and move all vap's in CAC state to RUN state.
|
|
*/
|
|
void
|
|
ieee80211_cac_completeswitch(struct ieee80211vap *vap0)
|
|
{
|
|
struct ieee80211com *ic = vap0->iv_ic;
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
/*
|
|
* Complete CAC state change for lead vap first; then
|
|
* clock all the other vap's waiting.
|
|
*/
|
|
KASSERT(vap0->iv_state == IEEE80211_S_CAC,
|
|
("wrong state %d", vap0->iv_state));
|
|
ieee80211_new_state_locked(vap0, IEEE80211_S_RUN, 0);
|
|
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
|
|
if (vap->iv_state == IEEE80211_S_CAC)
|
|
ieee80211_new_state_locked(vap, IEEE80211_S_RUN, 0);
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
/*
|
|
* Force all vap's other than the specified vap to the INIT state
|
|
* and mark them as waiting for a scan to complete. These vaps
|
|
* will be brought up when the scan completes and the scanning vap
|
|
* reaches RUN state by wakeupwaiting.
|
|
*/
|
|
static void
|
|
markwaiting(struct ieee80211vap *vap0)
|
|
{
|
|
struct ieee80211com *ic = vap0->iv_ic;
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
/*
|
|
* A vap list entry can not disappear since we are running on the
|
|
* taskqueue and a vap destroy will queue and drain another state
|
|
* change task.
|
|
*/
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
if (vap == vap0)
|
|
continue;
|
|
if (vap->iv_state != IEEE80211_S_INIT) {
|
|
/* NB: iv_newstate may drop the lock */
|
|
vap->iv_newstate(vap, IEEE80211_S_INIT, 0);
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Wakeup all vap's waiting for a scan to complete. This is the
|
|
* companion to markwaiting (above) and is used to coordinate
|
|
* multiple vaps scanning.
|
|
* This is called from the state taskqueue.
|
|
*/
|
|
static void
|
|
wakeupwaiting(struct ieee80211vap *vap0)
|
|
{
|
|
struct ieee80211com *ic = vap0->iv_ic;
|
|
struct ieee80211vap *vap;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
/*
|
|
* A vap list entry can not disappear since we are running on the
|
|
* taskqueue and a vap destroy will queue and drain another state
|
|
* change task.
|
|
*/
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
if (vap == vap0)
|
|
continue;
|
|
if (vap->iv_flags_ext & IEEE80211_FEXT_SCANWAIT) {
|
|
vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT;
|
|
/* NB: sta's cannot go INIT->RUN */
|
|
/* NB: iv_newstate may drop the lock */
|
|
vap->iv_newstate(vap,
|
|
vap->iv_opmode == IEEE80211_M_STA ?
|
|
IEEE80211_S_SCAN : IEEE80211_S_RUN, 0);
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Handle post state change work common to all operating modes.
|
|
*/
|
|
static void
|
|
ieee80211_newstate_cb(void *xvap, int npending)
|
|
{
|
|
struct ieee80211vap *vap = xvap;
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
enum ieee80211_state nstate, ostate;
|
|
int arg, rc;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
nstate = vap->iv_nstate;
|
|
arg = vap->iv_nstate_arg;
|
|
|
|
if (vap->iv_flags_ext & IEEE80211_FEXT_REINIT) {
|
|
/*
|
|
* We have been requested to drop back to the INIT before
|
|
* proceeding to the new state.
|
|
*/
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: %s -> %s arg %d\n", __func__,
|
|
ieee80211_state_name[vap->iv_state],
|
|
ieee80211_state_name[IEEE80211_S_INIT], arg);
|
|
vap->iv_newstate(vap, IEEE80211_S_INIT, arg);
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
vap->iv_flags_ext &= ~IEEE80211_FEXT_REINIT;
|
|
}
|
|
|
|
ostate = vap->iv_state;
|
|
if (nstate == IEEE80211_S_SCAN && ostate != IEEE80211_S_INIT) {
|
|
/*
|
|
* SCAN was forced; e.g. on beacon miss. Force other running
|
|
* vap's to INIT state and mark them as waiting for the scan to
|
|
* complete. This insures they don't interfere with our
|
|
* scanning. Since we are single threaded the vaps can not
|
|
* transition again while we are executing.
|
|
*
|
|
* XXX not always right, assumes ap follows sta
|
|
*/
|
|
markwaiting(vap);
|
|
}
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: %s -> %s arg %d\n", __func__,
|
|
ieee80211_state_name[ostate], ieee80211_state_name[nstate], arg);
|
|
|
|
rc = vap->iv_newstate(vap, nstate, arg);
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
vap->iv_flags_ext &= ~IEEE80211_FEXT_STATEWAIT;
|
|
if (rc != 0) {
|
|
/* State transition failed */
|
|
KASSERT(rc != EINPROGRESS, ("iv_newstate was deferred"));
|
|
KASSERT(nstate != IEEE80211_S_INIT,
|
|
("INIT state change failed"));
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: %s returned error %d\n", __func__,
|
|
ieee80211_state_name[nstate], rc);
|
|
goto done;
|
|
}
|
|
|
|
/* No actual transition, skip post processing */
|
|
if (ostate == nstate)
|
|
goto done;
|
|
|
|
if (nstate == IEEE80211_S_RUN) {
|
|
/*
|
|
* OACTIVE may be set on the vap if the upper layer
|
|
* tried to transmit (e.g. IPv6 NDP) before we reach
|
|
* RUN state. Clear it and restart xmit.
|
|
*
|
|
* Note this can also happen as a result of SLEEP->RUN
|
|
* (i.e. coming out of power save mode).
|
|
*/
|
|
IF_LOCK(&vap->iv_ifp->if_snd);
|
|
vap->iv_ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
IF_UNLOCK(&vap->iv_ifp->if_snd);
|
|
if_start(vap->iv_ifp);
|
|
|
|
/* bring up any vaps waiting on us */
|
|
wakeupwaiting(vap);
|
|
} else if (nstate == IEEE80211_S_INIT) {
|
|
/*
|
|
* Flush the scan cache if we did the last scan (XXX?)
|
|
* and flush any frames on send queues from this vap.
|
|
* Note the mgt q is used only for legacy drivers and
|
|
* will go away shortly.
|
|
*/
|
|
ieee80211_scan_flush(vap);
|
|
|
|
/* XXX NB: cast for altq */
|
|
ieee80211_flush_ifq((struct ifqueue *)&ic->ic_ifp->if_snd, vap);
|
|
}
|
|
done:
|
|
IEEE80211_UNLOCK(ic);
|
|
}
|
|
|
|
/*
|
|
* Public interface for initiating a state machine change.
|
|
* This routine single-threads the request and coordinates
|
|
* the scheduling of multiple vaps for the purpose of selecting
|
|
* an operating channel. Specifically the following scenarios
|
|
* are handled:
|
|
* o only one vap can be selecting a channel so on transition to
|
|
* SCAN state if another vap is already scanning then
|
|
* mark the caller for later processing and return without
|
|
* doing anything (XXX? expectations by caller of synchronous operation)
|
|
* o only one vap can be doing CAC of a channel so on transition to
|
|
* CAC state if another vap is already scanning for radar then
|
|
* mark the caller for later processing and return without
|
|
* doing anything (XXX? expectations by caller of synchronous operation)
|
|
* o if another vap is already running when a request is made
|
|
* to SCAN then an operating channel has been chosen; bypass
|
|
* the scan and just join the channel
|
|
*
|
|
* Note that the state change call is done through the iv_newstate
|
|
* method pointer so any driver routine gets invoked. The driver
|
|
* will normally call back into operating mode-specific
|
|
* ieee80211_newstate routines (below) unless it needs to completely
|
|
* bypass the state machine (e.g. because the firmware has it's
|
|
* own idea how things should work). Bypassing the net80211 layer
|
|
* is usually a mistake and indicates lack of proper integration
|
|
* with the net80211 layer.
|
|
*/
|
|
static int
|
|
ieee80211_new_state_locked(struct ieee80211vap *vap,
|
|
enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211vap *vp;
|
|
enum ieee80211_state ostate;
|
|
int nrunning, nscanning;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
if (vap->iv_flags_ext & IEEE80211_FEXT_STATEWAIT) {
|
|
if (vap->iv_nstate == IEEE80211_S_INIT) {
|
|
/*
|
|
* XXX The vap is being stopped, do no allow any other
|
|
* state changes until this is completed.
|
|
*/
|
|
return -1;
|
|
} else if (vap->iv_state != vap->iv_nstate) {
|
|
#if 0
|
|
/* Warn if the previous state hasn't completed. */
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: pending %s -> %s transition lost\n", __func__,
|
|
ieee80211_state_name[vap->iv_state],
|
|
ieee80211_state_name[vap->iv_nstate]);
|
|
#else
|
|
/* XXX temporarily enable to identify issues */
|
|
if_printf(vap->iv_ifp,
|
|
"%s: pending %s -> %s transition lost\n",
|
|
__func__, ieee80211_state_name[vap->iv_state],
|
|
ieee80211_state_name[vap->iv_nstate]);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
nrunning = nscanning = 0;
|
|
/* XXX can track this state instead of calculating */
|
|
TAILQ_FOREACH(vp, &ic->ic_vaps, iv_next) {
|
|
if (vp != vap) {
|
|
if (vp->iv_state >= IEEE80211_S_RUN)
|
|
nrunning++;
|
|
/* XXX doesn't handle bg scan */
|
|
/* NB: CAC+AUTH+ASSOC treated like SCAN */
|
|
else if (vp->iv_state > IEEE80211_S_INIT)
|
|
nscanning++;
|
|
}
|
|
}
|
|
ostate = vap->iv_state;
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: %s -> %s (nrunning %d nscanning %d)\n", __func__,
|
|
ieee80211_state_name[ostate], ieee80211_state_name[nstate],
|
|
nrunning, nscanning);
|
|
switch (nstate) {
|
|
case IEEE80211_S_SCAN:
|
|
if (ostate == IEEE80211_S_INIT) {
|
|
/*
|
|
* INIT -> SCAN happens on initial bringup.
|
|
*/
|
|
KASSERT(!(nscanning && nrunning),
|
|
("%d scanning and %d running", nscanning, nrunning));
|
|
if (nscanning) {
|
|
/*
|
|
* Someone is scanning, defer our state
|
|
* change until the work has completed.
|
|
*/
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: defer %s -> %s\n",
|
|
__func__, ieee80211_state_name[ostate],
|
|
ieee80211_state_name[nstate]);
|
|
vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
|
|
return 0;
|
|
}
|
|
if (nrunning) {
|
|
/*
|
|
* Someone is operating; just join the channel
|
|
* they have chosen.
|
|
*/
|
|
/* XXX kill arg? */
|
|
/* XXX check each opmode, adhoc? */
|
|
if (vap->iv_opmode == IEEE80211_M_STA)
|
|
nstate = IEEE80211_S_SCAN;
|
|
else
|
|
nstate = IEEE80211_S_RUN;
|
|
#ifdef IEEE80211_DEBUG
|
|
if (nstate != IEEE80211_S_SCAN) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE,
|
|
"%s: override, now %s -> %s\n",
|
|
__func__,
|
|
ieee80211_state_name[ostate],
|
|
ieee80211_state_name[nstate]);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
if (vap->iv_opmode == IEEE80211_M_WDS &&
|
|
(vap->iv_flags_ext & IEEE80211_FEXT_WDSLEGACY) &&
|
|
nscanning) {
|
|
/*
|
|
* Legacy WDS with someone else scanning; don't
|
|
* go online until that completes as we should
|
|
* follow the other vap to the channel they choose.
|
|
*/
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: defer %s -> %s (legacy WDS)\n", __func__,
|
|
ieee80211_state_name[ostate],
|
|
ieee80211_state_name[nstate]);
|
|
vap->iv_flags_ext |= IEEE80211_FEXT_SCANWAIT;
|
|
return 0;
|
|
}
|
|
if (vap->iv_opmode == IEEE80211_M_HOSTAP &&
|
|
IEEE80211_IS_CHAN_DFS(ic->ic_bsschan) &&
|
|
(vap->iv_flags_ext & IEEE80211_FEXT_DFS) &&
|
|
!IEEE80211_IS_CHAN_CACDONE(ic->ic_bsschan)) {
|
|
/*
|
|
* This is a DFS channel, transition to CAC state
|
|
* instead of RUN. This allows us to initiate
|
|
* Channel Availability Check (CAC) as specified
|
|
* by 11h/DFS.
|
|
*/
|
|
nstate = IEEE80211_S_CAC;
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: override %s -> %s (DFS)\n", __func__,
|
|
ieee80211_state_name[ostate],
|
|
ieee80211_state_name[nstate]);
|
|
}
|
|
break;
|
|
case IEEE80211_S_INIT:
|
|
/* cancel any scan in progress */
|
|
ieee80211_cancel_scan(vap);
|
|
if (ostate == IEEE80211_S_INIT ) {
|
|
/* XXX don't believe this */
|
|
/* INIT -> INIT. nothing to do */
|
|
vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANWAIT;
|
|
}
|
|
/* fall thru... */
|
|
default:
|
|
break;
|
|
}
|
|
/* defer the state change to a thread */
|
|
vap->iv_nstate = nstate;
|
|
vap->iv_nstate_arg = arg;
|
|
vap->iv_flags_ext |= IEEE80211_FEXT_STATEWAIT;
|
|
ieee80211_runtask(ic, &vap->iv_nstate_task);
|
|
return EINPROGRESS;
|
|
}
|
|
|
|
int
|
|
ieee80211_new_state(struct ieee80211vap *vap,
|
|
enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
int rc;
|
|
|
|
IEEE80211_LOCK(ic);
|
|
rc = ieee80211_new_state_locked(vap, nstate, arg);
|
|
IEEE80211_UNLOCK(ic);
|
|
return rc;
|
|
}
|