1078 lines
31 KiB
C
1078 lines
31 KiB
C
/*-
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* Copyright (c) 2001 Atsushi Onoe
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* Copyright (c) 2002-2005 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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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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 <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 <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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/* 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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#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2)
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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", "reserved#13", "reserved#14", "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_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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"RUN" /* IEEE80211_S_RUN */
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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 int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int);
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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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/* XXX room for crypto */
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ifp->if_hdrlen = sizeof(struct ieee80211_qosframe_addr4);
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#ifdef notdef
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ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
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#else
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ic->ic_rtsthreshold = IEEE80211_RTS_MAX;
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#endif
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ic->ic_fragthreshold = 2346; /* XXX not used yet */
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ic->ic_fixed_rate = -1; /* no fixed rate */
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ic->ic_protmode = IEEE80211_PROT_CTSONLY;
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ic->ic_roaming = IEEE80211_ROAMING_AUTO;
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ic->ic_wme.wme_hipri_switch_hysteresis =
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AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
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mtx_init(&ic->ic_mgtq.ifq_mtx, ifp->if_xname, "mgmt send q", MTX_DEF);
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/* protocol state change handler */
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ic->ic_newstate = ieee80211_newstate;
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/* initialize management frame handlers */
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ic->ic_recv_mgmt = ieee80211_recv_mgmt;
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ic->ic_send_mgmt = ieee80211_send_mgmt;
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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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/*
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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 (ic->ic_auth->ia_detach)
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ic->ic_auth->ia_detach(ic);
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IF_DRAIN(&ic->ic_mgtq);
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mtx_destroy(&ic->ic_mgtq.ifq_mtx);
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/*
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* Detach any ACL'ator.
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*/
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if (ic->ic_acl != NULL)
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ic->ic_acl->iac_detach(ic);
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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 u_int8_t *essid, int len)
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{
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const u_int8_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(const u_int8_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 u_int8_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 (wh->i_fc[1] & IEEE80211_FC1_WEP) {
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int i;
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printf(" WEP [IV");
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for (i = 0; i < IEEE80211_WEP_IVLEN; i++)
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printf(" %.02x", buf[sizeof(*wh)+i]);
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printf(" KID %u]", buf[sizeof(*wh)+i] >> 6);
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}
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if (rate >= 0)
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printf(" %dM", rate / 2);
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if (rssi >= 0)
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printf(" +%d", rssi);
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printf("\n");
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if (len > 0) {
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for (i = 0; i < len; i++) {
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if ((i & 1) == 0)
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printf(" ");
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printf("%02x", buf[i]);
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}
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printf("\n");
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}
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}
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int
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ieee80211_fix_rate(struct ieee80211com *ic, struct ieee80211_node *ni, int flags)
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{
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#define RV(v) ((v) & IEEE80211_RATE_VAL)
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int i, j, ignore, error;
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int okrate, badrate, fixedrate;
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struct ieee80211_rateset *srs, *nrs;
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u_int8_t r;
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/*
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* If the fixed rate check was requested but no
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* fixed has been defined then just remove it.
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*/
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if ((flags & IEEE80211_F_DOFRATE) && ic->ic_fixed_rate < 0)
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flags &= ~IEEE80211_F_DOFRATE;
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error = 0;
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okrate = badrate = fixedrate = 0;
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srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)];
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nrs = &ni->ni_rates;
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for (i = 0; i < nrs->rs_nrates; ) {
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ignore = 0;
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if (flags & IEEE80211_F_DOSORT) {
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/*
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* Sort rates.
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*/
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for (j = i + 1; j < nrs->rs_nrates; j++) {
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if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
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r = nrs->rs_rates[i];
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nrs->rs_rates[i] = nrs->rs_rates[j];
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nrs->rs_rates[j] = r;
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}
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}
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}
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r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
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badrate = r;
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if (flags & IEEE80211_F_DOFRATE) {
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/*
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* Check any fixed rate is included.
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*/
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if (r == RV(srs->rs_rates[ic->ic_fixed_rate]))
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fixedrate = r;
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}
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if (flags & IEEE80211_F_DONEGO) {
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/*
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* Check against supported rates.
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*/
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for (j = 0; j < srs->rs_nrates; j++) {
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if (r == RV(srs->rs_rates[j])) {
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/*
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* Overwrite with the supported rate
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* value so any basic rate bit is set.
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* This insures that response we send
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* to stations have the necessary basic
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* rate bit set.
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*/
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nrs->rs_rates[i] = srs->rs_rates[j];
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break;
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}
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}
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if (j == srs->rs_nrates) {
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/*
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* A rate in the node's rate set is not
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* supported. If this is a basic rate and we
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* are operating as an AP then this is an error.
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* Otherwise we just discard/ignore the rate.
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* Note that this is important for 11b stations
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* when they want to associate with an 11g AP.
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*/
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if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
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(nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
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error++;
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ignore++;
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}
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}
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if (flags & IEEE80211_F_DODEL) {
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/*
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* Delete unacceptable rates.
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*/
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if (ignore) {
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nrs->rs_nrates--;
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for (j = i; j < nrs->rs_nrates; j++)
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nrs->rs_rates[j] = nrs->rs_rates[j + 1];
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nrs->rs_rates[j] = 0;
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continue;
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}
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}
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if (!ignore)
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okrate = nrs->rs_rates[i];
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i++;
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}
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if (okrate == 0 || error != 0 ||
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((flags & IEEE80211_F_DOFRATE) && fixedrate == 0))
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return badrate | IEEE80211_RATE_BASIC;
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else
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return RV(okrate);
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#undef RV
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}
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/*
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* Reset 11g-related state.
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*/
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void
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ieee80211_reset_erp(struct ieee80211com *ic)
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{
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ic->ic_flags &= ~IEEE80211_F_USEPROT;
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ic->ic_nonerpsta = 0;
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ic->ic_longslotsta = 0;
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/*
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* Short slot time is enabled only when operating in 11g
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* and not in an IBSS. We must also honor whether or not
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* the driver is capable of doing it.
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*/
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ieee80211_set_shortslottime(ic,
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ic->ic_curmode == IEEE80211_MODE_11A ||
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(ic->ic_curmode == IEEE80211_MODE_11G &&
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ic->ic_opmode == IEEE80211_M_HOSTAP &&
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(ic->ic_caps & IEEE80211_C_SHSLOT)));
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/*
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* Set short preamble and ERP barker-preamble flags.
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*/
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if (ic->ic_curmode == IEEE80211_MODE_11A ||
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(ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
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ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
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ic->ic_flags &= ~IEEE80211_F_USEBARKER;
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} else {
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ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
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ic->ic_flags |= IEEE80211_F_USEBARKER;
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}
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}
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/*
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* Set the short slot time state and notify the driver.
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*/
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void
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ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
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{
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if (onoff)
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ic->ic_flags |= IEEE80211_F_SHSLOT;
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else
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ic->ic_flags &= ~IEEE80211_F_SHSLOT;
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/* notify driver */
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if (ic->ic_updateslot != NULL)
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ic->ic_updateslot(ic->ic_ifp);
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}
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|
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/*
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* Check if the specified rate set supports ERP.
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|
* NB: the rate set is assumed to be sorted.
|
|
*/
|
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int
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ieee80211_iserp_rateset(struct ieee80211com *ic, struct ieee80211_rateset *rs)
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{
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#define N(a) (sizeof(a) / sizeof(a[0]))
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static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
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int i, j;
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if (rs->rs_nrates < N(rates))
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return 0;
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for (i = 0; i < N(rates); i++) {
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for (j = 0; j < rs->rs_nrates; j++) {
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int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
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if (rates[i] == r)
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goto next;
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if (r > rates[i])
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|
return 0;
|
|
}
|
|
return 0;
|
|
next:
|
|
;
|
|
}
|
|
return 1;
|
|
#undef N
|
|
}
|
|
|
|
/*
|
|
* Mark the basic rates for the 11g 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.
|
|
*/
|
|
void
|
|
ieee80211_set11gbasicrates(struct ieee80211_rateset *rs, enum ieee80211_phymode mode)
|
|
{
|
|
static const struct ieee80211_rateset basic[] = {
|
|
{ 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */
|
|
{ 2, { 2, 4 } }, /* IEEE80211_MODE_11B */
|
|
{ 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_11G (mixed b/g) */
|
|
{ 0 }, /* IEEE80211_MODE_FH */
|
|
/* IEEE80211_MODE_PUREG (not yet) */
|
|
{ 7, { 2, 4, 11, 22, 12, 24, 48 } },
|
|
};
|
|
int i, j;
|
|
|
|
for (i = 0; i < rs->rs_nrates; i++) {
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* WME protocol support. The following parameters come from the spec.
|
|
*/
|
|
typedef struct phyParamType {
|
|
u_int8_t aifsn;
|
|
u_int8_t logcwmin;
|
|
u_int8_t logcwmax;
|
|
u_int16_t txopLimit;
|
|
u_int8_t acm;
|
|
} paramType;
|
|
|
|
static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
|
|
{ 3, 4, 6 }, /* IEEE80211_MODE_AUTO */
|
|
{ 3, 4, 6 }, /* IEEE80211_MODE_11A */
|
|
{ 3, 5, 7 }, /* IEEE80211_MODE_11B */
|
|
{ 3, 4, 6 }, /* IEEE80211_MODE_11G */
|
|
{ 3, 5, 7 }, /* IEEE80211_MODE_FH */
|
|
{ 2, 3, 5 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 2, 3, 5 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
|
|
{ 7, 4, 10 }, /* IEEE80211_MODE_AUTO */
|
|
{ 7, 4, 10 }, /* IEEE80211_MODE_11A */
|
|
{ 7, 5, 10 }, /* IEEE80211_MODE_11B */
|
|
{ 7, 4, 10 }, /* IEEE80211_MODE_11G */
|
|
{ 7, 5, 10 }, /* IEEE80211_MODE_FH */
|
|
{ 7, 3, 10 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 7, 3, 10 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
|
|
{ 1, 3, 4, 94 }, /* IEEE80211_MODE_AUTO */
|
|
{ 1, 3, 4, 94 }, /* IEEE80211_MODE_11A */
|
|
{ 1, 4, 5, 188 }, /* IEEE80211_MODE_11B */
|
|
{ 1, 3, 4, 94 }, /* IEEE80211_MODE_11G */
|
|
{ 1, 4, 5, 188 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
|
|
{ 1, 2, 3, 47 }, /* IEEE80211_MODE_AUTO */
|
|
{ 1, 2, 3, 47 }, /* IEEE80211_MODE_11A */
|
|
{ 1, 3, 4, 102 }, /* IEEE80211_MODE_11B */
|
|
{ 1, 2, 3, 47 }, /* IEEE80211_MODE_11G */
|
|
{ 1, 3, 4, 102 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
|
|
static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
|
|
{ 3, 4, 10 }, /* IEEE80211_MODE_AUTO */
|
|
{ 3, 4, 10 }, /* IEEE80211_MODE_11A */
|
|
{ 3, 5, 10 }, /* IEEE80211_MODE_11B */
|
|
{ 3, 4, 10 }, /* IEEE80211_MODE_11G */
|
|
{ 3, 5, 10 }, /* IEEE80211_MODE_FH */
|
|
{ 2, 3, 10 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 2, 3, 10 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
|
|
{ 2, 3, 4, 94 }, /* IEEE80211_MODE_AUTO */
|
|
{ 2, 3, 4, 94 }, /* IEEE80211_MODE_11A */
|
|
{ 2, 4, 5, 188 }, /* IEEE80211_MODE_11B */
|
|
{ 2, 3, 4, 94 }, /* IEEE80211_MODE_11G */
|
|
{ 2, 4, 5, 188 }, /* IEEE80211_MODE_FH */
|
|
{ 2, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 2, 2, 3, 94 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
|
|
{ 2, 2, 3, 47 }, /* IEEE80211_MODE_AUTO */
|
|
{ 2, 2, 3, 47 }, /* IEEE80211_MODE_11A */
|
|
{ 2, 3, 4, 102 }, /* IEEE80211_MODE_11B */
|
|
{ 2, 2, 3, 47 }, /* IEEE80211_MODE_11G */
|
|
{ 2, 3, 4, 102 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 2, 2, 47 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
|
|
void
|
|
ieee80211_wme_initparams(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
const paramType *pPhyParam, *pBssPhyParam;
|
|
struct wmeParams *wmep;
|
|
int i;
|
|
|
|
if ((ic->ic_caps & IEEE80211_C_WME) == 0)
|
|
return;
|
|
|
|
for (i = 0; i < WME_NUM_AC; i++) {
|
|
switch (i) {
|
|
case WME_AC_BK:
|
|
pPhyParam = &phyParamForAC_BK[ic->ic_curmode];
|
|
pBssPhyParam = &phyParamForAC_BK[ic->ic_curmode];
|
|
break;
|
|
case WME_AC_VI:
|
|
pPhyParam = &phyParamForAC_VI[ic->ic_curmode];
|
|
pBssPhyParam = &bssPhyParamForAC_VI[ic->ic_curmode];
|
|
break;
|
|
case WME_AC_VO:
|
|
pPhyParam = &phyParamForAC_VO[ic->ic_curmode];
|
|
pBssPhyParam = &bssPhyParamForAC_VO[ic->ic_curmode];
|
|
break;
|
|
case WME_AC_BE:
|
|
default:
|
|
pPhyParam = &phyParamForAC_BE[ic->ic_curmode];
|
|
pBssPhyParam = &bssPhyParamForAC_BE[ic->ic_curmode];
|
|
break;
|
|
}
|
|
|
|
wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
|
|
if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
|
|
wmep->wmep_acm = pPhyParam->acm;
|
|
wmep->wmep_aifsn = pPhyParam->aifsn;
|
|
wmep->wmep_logcwmin = pPhyParam->logcwmin;
|
|
wmep->wmep_logcwmax = pPhyParam->logcwmax;
|
|
wmep->wmep_txopLimit = pPhyParam->txopLimit;
|
|
} else {
|
|
wmep->wmep_acm = pBssPhyParam->acm;
|
|
wmep->wmep_aifsn = pBssPhyParam->aifsn;
|
|
wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
|
|
wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
|
|
wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
|
|
|
|
}
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
|
|
"%s: %s chan [acm %u aifsn %u log2(cwmin) %u "
|
|
"log2(cwmax) %u txpoLimit %u]\n", __func__
|
|
, ieee80211_wme_acnames[i]
|
|
, wmep->wmep_acm
|
|
, wmep->wmep_aifsn
|
|
, wmep->wmep_logcwmin
|
|
, wmep->wmep_logcwmax
|
|
, wmep->wmep_txopLimit
|
|
);
|
|
|
|
wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
|
|
wmep->wmep_acm = pBssPhyParam->acm;
|
|
wmep->wmep_aifsn = pBssPhyParam->aifsn;
|
|
wmep->wmep_logcwmin = pBssPhyParam->logcwmin;
|
|
wmep->wmep_logcwmax = pBssPhyParam->logcwmax;
|
|
wmep->wmep_txopLimit = pBssPhyParam->txopLimit;
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
|
|
"%s: %s bss [acm %u aifsn %u log2(cwmin) %u "
|
|
"log2(cwmax) %u txpoLimit %u]\n", __func__
|
|
, ieee80211_wme_acnames[i]
|
|
, wmep->wmep_acm
|
|
, wmep->wmep_aifsn
|
|
, wmep->wmep_logcwmin
|
|
, wmep->wmep_logcwmax
|
|
, wmep->wmep_txopLimit
|
|
);
|
|
}
|
|
/* NB: check ic_bss to avoid NULL deref on initial attach */
|
|
if (ic->ic_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 * ic->ic_bss->ni_intval) / 100;
|
|
ieee80211_wme_updateparams(ic);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update WME parameters for ourself and the BSS.
|
|
*/
|
|
void
|
|
ieee80211_wme_updateparams_locked(struct ieee80211com *ic)
|
|
{
|
|
static const paramType phyParam[IEEE80211_MODE_MAX] = {
|
|
{ 2, 4, 10, 64 }, /* IEEE80211_MODE_AUTO */
|
|
{ 2, 4, 10, 64 }, /* IEEE80211_MODE_11A */
|
|
{ 2, 5, 10, 64 }, /* IEEE80211_MODE_11B */
|
|
{ 2, 4, 10, 64 }, /* IEEE80211_MODE_11G */
|
|
{ 2, 5, 10, 64 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 3, 10, 64 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 3, 10, 64 }, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
const struct wmeParams *wmep;
|
|
struct wmeParams *chanp, *bssp;
|
|
int i;
|
|
|
|
/* set up the channel access parameters for the physical device */
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* 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 ((ic->ic_opmode == IEEE80211_M_HOSTAP &&
|
|
(wme->wme_flags & WME_F_AGGRMODE) == 0) ||
|
|
(ic->ic_opmode != IEEE80211_M_HOSTAP &&
|
|
(ic->ic_bss->ni_flags & IEEE80211_NODE_QOS) == 0) ||
|
|
(ic->ic_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 =
|
|
phyParam[ic->ic_curmode].aifsn;
|
|
chanp->wmep_logcwmin = bssp->wmep_logcwmin =
|
|
phyParam[ic->ic_curmode].logcwmin;
|
|
chanp->wmep_logcwmax = bssp->wmep_logcwmax =
|
|
phyParam[ic->ic_curmode].logcwmax;
|
|
chanp->wmep_txopLimit = bssp->wmep_txopLimit =
|
|
(ic->ic_caps & IEEE80211_C_BURST) ?
|
|
phyParam[ic->ic_curmode].txopLimit : 0;
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
|
|
"%s: %s [acm %u aifsn %u log2(cwmin) %u "
|
|
"log2(cwmax) %u txpoLimit %u]\n", __func__
|
|
, ieee80211_wme_acnames[WME_AC_BE]
|
|
, chanp->wmep_acm
|
|
, chanp->wmep_aifsn
|
|
, chanp->wmep_logcwmin
|
|
, chanp->wmep_logcwmax
|
|
, chanp->wmep_txopLimit
|
|
);
|
|
}
|
|
|
|
if (ic->ic_opmode == IEEE80211_M_HOSTAP &&
|
|
ic->ic_sta_assoc < 2 && (wme->wme_flags & WME_F_AGGRMODE) == 0) {
|
|
static const u_int8_t logCwMin[IEEE80211_MODE_MAX] = {
|
|
3, /* IEEE80211_MODE_AUTO */
|
|
3, /* IEEE80211_MODE_11A */
|
|
4, /* IEEE80211_MODE_11B */
|
|
3, /* IEEE80211_MODE_11G */
|
|
4, /* IEEE80211_MODE_FH */
|
|
3, /* IEEE80211_MODE_TURBO_A */
|
|
3, /* IEEE80211_MODE_TURBO_G */
|
|
};
|
|
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[ic->ic_curmode];
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
|
|
"%s: %s log2(cwmin) %u\n", __func__
|
|
, ieee80211_wme_acnames[WME_AC_BE]
|
|
, chanp->wmep_logcwmin
|
|
);
|
|
}
|
|
if (ic->ic_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;
|
|
ic->ic_flags |= IEEE80211_F_WMEUPDATE;
|
|
}
|
|
|
|
wme->wme_update(ic);
|
|
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_WME,
|
|
"%s: WME params updated, cap_info 0x%x\n", __func__,
|
|
ic->ic_opmode == IEEE80211_M_STA ?
|
|
wme->wme_wmeChanParams.cap_info :
|
|
wme->wme_bssChanParams.cap_info);
|
|
}
|
|
|
|
void
|
|
ieee80211_wme_updateparams(struct ieee80211com *ic)
|
|
{
|
|
|
|
if (ic->ic_caps & IEEE80211_C_WME) {
|
|
IEEE80211_BEACON_LOCK(ic);
|
|
ieee80211_wme_updateparams_locked(ic);
|
|
IEEE80211_BEACON_UNLOCK(ic);
|
|
}
|
|
}
|
|
|
|
static int
|
|
ieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
struct ieee80211_node_table *nt;
|
|
struct ieee80211_node *ni;
|
|
enum ieee80211_state ostate;
|
|
|
|
ostate = ic->ic_state;
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE, "%s: %s -> %s\n", __func__,
|
|
ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
|
|
ic->ic_state = nstate; /* state transition */
|
|
ni = ic->ic_bss; /* NB: no reference held */
|
|
switch (nstate) {
|
|
case IEEE80211_S_INIT:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
switch (ic->ic_opmode) {
|
|
case IEEE80211_M_STA:
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_DISASSOC,
|
|
IEEE80211_REASON_ASSOC_LEAVE);
|
|
ieee80211_sta_leave(ic, ni);
|
|
break;
|
|
case IEEE80211_M_HOSTAP:
|
|
nt = &ic->ic_sta;
|
|
IEEE80211_NODE_LOCK(nt);
|
|
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
|
|
if (ni->ni_associd == 0)
|
|
continue;
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_DISASSOC,
|
|
IEEE80211_REASON_ASSOC_LEAVE);
|
|
}
|
|
IEEE80211_NODE_UNLOCK(nt);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
goto reset;
|
|
case IEEE80211_S_ASSOC:
|
|
switch (ic->ic_opmode) {
|
|
case IEEE80211_M_STA:
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_DEAUTH,
|
|
IEEE80211_REASON_AUTH_LEAVE);
|
|
break;
|
|
case IEEE80211_M_HOSTAP:
|
|
nt = &ic->ic_sta;
|
|
IEEE80211_NODE_LOCK(nt);
|
|
TAILQ_FOREACH(ni, &nt->nt_node, ni_list) {
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_DEAUTH,
|
|
IEEE80211_REASON_AUTH_LEAVE);
|
|
}
|
|
IEEE80211_NODE_UNLOCK(nt);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
goto reset;
|
|
case IEEE80211_S_SCAN:
|
|
ieee80211_cancel_scan(ic);
|
|
goto reset;
|
|
case IEEE80211_S_AUTH:
|
|
reset:
|
|
ic->ic_mgt_timer = 0;
|
|
IF_DRAIN(&ic->ic_mgtq);
|
|
ieee80211_reset_bss(ic);
|
|
break;
|
|
}
|
|
if (ic->ic_auth->ia_detach != NULL)
|
|
ic->ic_auth->ia_detach(ic);
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
if ((ic->ic_opmode == IEEE80211_M_HOSTAP ||
|
|
ic->ic_opmode == IEEE80211_M_IBSS ||
|
|
ic->ic_opmode == IEEE80211_M_AHDEMO) &&
|
|
ic->ic_des_chan != IEEE80211_CHAN_ANYC) {
|
|
/*
|
|
* AP operation and we already have a channel;
|
|
* bypass the scan and startup immediately.
|
|
*/
|
|
ieee80211_create_ibss(ic, ic->ic_des_chan);
|
|
} else {
|
|
ieee80211_begin_scan(ic, arg);
|
|
}
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
/*
|
|
* Scan next. If doing an active scan and the
|
|
* channel is not marked passive-only then send
|
|
* a probe request. Otherwise just listen for
|
|
* beacons on the channel.
|
|
*/
|
|
if ((ic->ic_flags & IEEE80211_F_ASCAN) &&
|
|
(ni->ni_chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) {
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_PROBE_REQ, 0);
|
|
}
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
/* beacon miss */
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_STATE,
|
|
"no recent beacons from %s; rescanning\n",
|
|
ether_sprintf(ic->ic_bss->ni_bssid));
|
|
ieee80211_sta_leave(ic, ni);
|
|
ic->ic_flags &= ~IEEE80211_F_SIBSS; /* XXX */
|
|
/* FALLTHRU */
|
|
case IEEE80211_S_AUTH:
|
|
case IEEE80211_S_ASSOC:
|
|
/* timeout restart scan */
|
|
ni = ieee80211_find_node(&ic->ic_scan,
|
|
ic->ic_bss->ni_macaddr);
|
|
if (ni != NULL) {
|
|
ni->ni_fails++;
|
|
ieee80211_unref_node(&ni);
|
|
}
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
|
|
ieee80211_begin_scan(ic, arg);
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
case IEEE80211_S_SCAN:
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 1);
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
case IEEE80211_S_ASSOC:
|
|
switch (arg) {
|
|
case IEEE80211_FC0_SUBTYPE_AUTH:
|
|
/* ??? */
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 2);
|
|
break;
|
|
case IEEE80211_FC0_SUBTYPE_DEAUTH:
|
|
/* ignore and retry scan on timeout */
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
switch (arg) {
|
|
case IEEE80211_FC0_SUBTYPE_AUTH:
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 2);
|
|
ic->ic_state = ostate; /* stay RUN */
|
|
break;
|
|
case IEEE80211_FC0_SUBTYPE_DEAUTH:
|
|
ieee80211_sta_leave(ic, ni);
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
|
|
/* try to reauth */
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 1);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_ASSOC:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
case IEEE80211_S_SCAN:
|
|
case IEEE80211_S_ASSOC:
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
|
|
"%s: invalid transition\n", __func__);
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
ieee80211_sta_leave(ic, ni);
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 1);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
if (ic->ic_flags & IEEE80211_F_WPA) {
|
|
/* XXX validate prerequisites */
|
|
}
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
if (ic->ic_opmode == IEEE80211_M_MONITOR)
|
|
break;
|
|
/* fall thru... */
|
|
case IEEE80211_S_AUTH:
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
|
|
"%s: invalid transition\n", __func__);
|
|
/* fall thru... */
|
|
case IEEE80211_S_RUN:
|
|
break;
|
|
case IEEE80211_S_SCAN: /* adhoc/hostap mode */
|
|
case IEEE80211_S_ASSOC: /* infra mode */
|
|
KASSERT(ni->ni_txrate < ni->ni_rates.rs_nrates,
|
|
("%s: bogus xmit rate %u setup\n", __func__,
|
|
ni->ni_txrate));
|
|
#ifdef IEEE80211_DEBUG
|
|
if (ieee80211_msg_debug(ic)) {
|
|
if (ic->ic_opmode == IEEE80211_M_STA)
|
|
if_printf(ifp, "associated ");
|
|
else
|
|
if_printf(ifp, "synchronized ");
|
|
printf("with %s ssid ",
|
|
ether_sprintf(ni->ni_bssid));
|
|
ieee80211_print_essid(ic->ic_bss->ni_essid,
|
|
ni->ni_esslen);
|
|
printf(" channel %d start %uMb\n",
|
|
ieee80211_chan2ieee(ic, ni->ni_chan),
|
|
IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate]));
|
|
}
|
|
#endif
|
|
ic->ic_mgt_timer = 0;
|
|
if (ic->ic_opmode == IEEE80211_M_STA)
|
|
ieee80211_notify_node_join(ic, ni,
|
|
arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
|
|
if_start(ifp); /* XXX not authorized yet */
|
|
break;
|
|
}
|
|
/*
|
|
* Start/stop the authenticator when operating as an
|
|
* AP. We delay until here to allow configuration to
|
|
* happen out of order.
|
|
*/
|
|
if (ic->ic_opmode == IEEE80211_M_HOSTAP && /* XXX IBSS/AHDEMO */
|
|
ic->ic_auth->ia_attach != NULL) {
|
|
/* XXX check failure */
|
|
ic->ic_auth->ia_attach(ic);
|
|
} else if (ic->ic_auth->ia_detach != NULL) {
|
|
ic->ic_auth->ia_detach(ic);
|
|
}
|
|
/*
|
|
* When 802.1x is not in use mark the port authorized
|
|
* at this point so traffic can flow.
|
|
*/
|
|
if (ni->ni_authmode != IEEE80211_AUTH_8021X)
|
|
ieee80211_node_authorize(ic, ni);
|
|
/*
|
|
* Enable inactivity processing.
|
|
* XXX
|
|
*/
|
|
ic->ic_scan.nt_inact_timer = IEEE80211_INACT_WAIT;
|
|
ic->ic_sta.nt_inact_timer = IEEE80211_INACT_WAIT;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|