mirror of
https://github.com/proski/madwifi
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1b019e9b0d
DFS pulse analysis. Untested. git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@4076 0192ed92-7a03-0410-a25b-9323aeb14dbd
1975 lines
56 KiB
C
1975 lines
56 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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* $Id$
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*/
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#ifndef EXPORT_SYMTAB
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#define EXPORT_SYMTAB
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#endif
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/*
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* IEEE 802.11 protocol support.
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*/
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#ifndef AUTOCONF_INCLUDED
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#include <linux/config.h>
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#endif
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#include <linux/version.h>
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#include <linux/kmod.h>
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/netdevice.h>
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#include "if_media.h"
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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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EXPORT_SYMBOL(ieee80211_mgt_subtype_name);
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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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EXPORT_SYMBOL(ieee80211_ctl_subtype_name);
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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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EXPORT_SYMBOL(ieee80211_state_name);
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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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EXPORT_SYMBOL(ieee80211_wme_acnames);
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static int ieee80211_newstate(struct ieee80211vap *, enum ieee80211_state, int);
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static void ieee80211_tx_timeout(unsigned long);
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#ifdef ATH_SUPERG_XR
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static void ieee80211_start_xrvap(unsigned long);
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#endif
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void ieee80211_auth_setup(void);
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void
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ieee80211_proto_attach(struct ieee80211com *ic)
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{
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ic->ic_protmode = IEEE80211_PROT_CTSONLY;
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ic->ic_rssi_ewma = 0;
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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_recv_mgmt = ieee80211_recv_mgmt;
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ic->ic_send_mgmt = ieee80211_send_mgmt;
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ieee80211_auth_setup();
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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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void
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ieee80211_proto_vattach(struct ieee80211vap *vap)
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{
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#ifdef notdef
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vap->iv_rtsthreshold = IEEE80211_RTS_DEFAULT;
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#else
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vap->iv_rtsthreshold = IEEE80211_RTS_MAX;
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#endif
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vap->iv_fragthreshold = 2346; /* XXX not used yet */
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vap->iv_fixed_rate = IEEE80211_FIXED_RATE_NONE;
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init_timer(&vap->iv_mgtsend);
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init_timer(&vap->iv_xrvapstart);
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init_timer(&vap->iv_swbmiss);
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vap->iv_mgtsend.function = ieee80211_tx_timeout;
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vap->iv_mgtsend.data = (unsigned long) vap;
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/* protocol state change handler */
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vap->iv_newstate = ieee80211_newstate;
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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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/*
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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)
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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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}
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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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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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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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EXPORT_SYMBOL(ieee80211_authenticator_register);
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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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EXPORT_SYMBOL(ieee80211_authenticator_unregister);
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/*
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* Very simple-minded authenticator backend module support.
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*/
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/* XXX just one for now */
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static const struct ieee80211_authenticator_backend *backend = NULL;
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void
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ieee80211_authenticator_backend_register(
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const struct ieee80211_authenticator_backend *be)
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{
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printk(KERN_INFO "wlan: %s backend registered\n", be->iab_name);
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backend = be;
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}
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EXPORT_SYMBOL(ieee80211_authenticator_backend_register);
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void
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ieee80211_authenticator_backend_unregister(
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const struct ieee80211_authenticator_backend * be)
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{
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if (backend == be)
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backend = NULL;
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printk(KERN_INFO "wlan: %s backend unregistered\n",
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be->iab_name);
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}
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EXPORT_SYMBOL(ieee80211_authenticator_backend_unregister);
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const struct ieee80211_authenticator_backend *
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ieee80211_authenticator_backend_get(const char *name)
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{
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return backend && strcmp(backend->iab_name, name) == 0 ? backend : NULL;
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}
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EXPORT_SYMBOL(ieee80211_authenticator_backend_get);
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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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printk(KERN_INFO "wlan: %s acl policy registered\n", iac->iac_name);
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acl = iac;
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}
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EXPORT_SYMBOL(ieee80211_aclator_register);
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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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printk(KERN_INFO "wlan: %s acl policy unregistered\n", iac->iac_name);
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}
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EXPORT_SYMBOL(ieee80211_aclator_unregister);
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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 && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
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}
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EXPORT_SYMBOL(ieee80211_aclator_get);
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#ifdef IEEE80211_DEBUG
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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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int i;
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const u_int8_t *p;
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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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printk("\"");
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for (i = 0, p = essid; i < len; i++, p++)
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printk("%c", *p);
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printk("\"");
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} else {
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printk("0x");
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for (i = 0, p = essid; i < len; i++, p++)
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printk("%02x", *p);
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}
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}
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EXPORT_SYMBOL(ieee80211_print_essid);
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void
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ieee80211_dump_pkt(struct ieee80211com *ic, const u_int8_t *buf,
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int len, int rate, int rssi, int tx)
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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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printk("NoDS " MAC_FMT, MAC_ADDR(wh->i_addr2));
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printk("->" MAC_FMT, MAC_ADDR(wh->i_addr1));
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printk("(" MAC_FMT ")", MAC_ADDR(wh->i_addr3));
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break;
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case IEEE80211_FC1_DIR_TODS:
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printk("ToDS " MAC_FMT, MAC_ADDR(wh->i_addr2));
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printk("->" MAC_FMT, MAC_ADDR(wh->i_addr3));
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printk("(" MAC_FMT ")", MAC_ADDR(wh->i_addr1));
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break;
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case IEEE80211_FC1_DIR_FROMDS:
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printk("FrDS " MAC_FMT, MAC_ADDR(wh->i_addr3));
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printk("->" MAC_FMT, MAC_ADDR(wh->i_addr1));
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printk("(" MAC_FMT ")", MAC_ADDR(wh->i_addr2));
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break;
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case IEEE80211_FC1_DIR_DSTODS:
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printk("InDS " MAC_FMT, MAC_ADDR((u_int8_t *)&wh[1]));
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printk("->" MAC_FMT, MAC_ADDR(wh->i_addr3));
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printk("(" MAC_FMT, MAC_ADDR(wh->i_addr2));
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printk("->" MAC_FMT ")", MAC_ADDR(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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printk(" data");
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break;
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case IEEE80211_FC0_TYPE_MGT:
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printk(" %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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printk(" 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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printk(" 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_PROT) {
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int off;
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if (tx)
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off = ieee80211_anyhdrspace(ic, wh);
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else
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off = ieee80211_anyhdrsize(wh);
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printk(" Prot. [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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printk(" %.02x %.02x %.02x",
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buf[off + 4], buf[off + 5], buf[off + 6]);
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printk(" KID %u]", buf[off + IEEE80211_WEP_IVLEN] >> 6);
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}
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if (rate >= 0)
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printk(" %dM", rate / 2);
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if (rssi >= 0)
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printk(" +%d", rssi);
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printk("\n");
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if (len > 0) {
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for (i = 0; i < len; i++) {
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if ((i % 8) == 0)
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printk(" ");
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if ((i % 16) == 0)
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printk("\n");
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printk("%02x ", buf[i]);
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}
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printk("\n\n");
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}
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}
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EXPORT_SYMBOL(ieee80211_dump_pkt);
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#endif
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int
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ieee80211_fix_rate(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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struct ieee80211vap *vap = ni->ni_vap;
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struct ieee80211com *ic = ni->ni_ic;
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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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error = 0;
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okrate = badrate = fixedrate = 0;
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srs = &ic->ic_sup_rates[ieee80211_chan2mode(ni->ni_chan)];
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nrs = &ni->ni_rates;
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fixedrate = IEEE80211_FIXED_RATE_NONE;
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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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/*
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* remove 0 rates
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* they don't make sense and can lead to trouble later
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*/
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if (r == 0) {
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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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* Check for fixed rate.
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*/
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if (r == vap->iv_fixed_rate)
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fixedrate = r;
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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 ensures 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 (vap->iv_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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}
|
|
if (flags & IEEE80211_F_DODEL) {
|
|
/*
|
|
* Delete unacceptable rates.
|
|
*/
|
|
if (ignore) {
|
|
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 (!ignore)
|
|
okrate = nrs->rs_rates[i];
|
|
i++;
|
|
}
|
|
if (okrate == 0 || error != 0 ||
|
|
((flags & IEEE80211_F_DOFRATE) && fixedrate != vap->iv_fixed_rate))
|
|
return badrate | IEEE80211_RATE_BASIC;
|
|
else
|
|
return RV(okrate);
|
|
#undef RV
|
|
}
|
|
|
|
/*
|
|
* Reset 11g-related state.
|
|
*/
|
|
void
|
|
ieee80211_reset_erp(struct ieee80211com *ic, enum ieee80211_phymode mode)
|
|
{
|
|
#define IS_11G(m) \
|
|
((m) == IEEE80211_MODE_11G || (m) == IEEE80211_MODE_TURBO_G)
|
|
|
|
ic->ic_flags &= ~IEEE80211_F_USEPROT;
|
|
/*
|
|
* Preserve the long slot and nonerp station count if
|
|
* switching between 11g and turboG. Otherwise, inactivity
|
|
* will cause the turbo station to disassociate and possibly
|
|
* try to leave the network.
|
|
* XXX not right if really trying to reset state
|
|
*/
|
|
if (IS_11G(mode) ^ IS_11G(ic->ic_curmode)) {
|
|
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_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;
|
|
}
|
|
#undef IS_11G
|
|
}
|
|
|
|
/*
|
|
* 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_dev);
|
|
}
|
|
|
|
/*
|
|
* Check if the specified rate set supports ERP.
|
|
* NB: the rate set is assumed to be sorted.
|
|
*/
|
|
int
|
|
ieee80211_iserp_rateset(struct ieee80211com *ic, struct ieee80211_rateset *rs)
|
|
{
|
|
static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
|
|
int i, j;
|
|
|
|
if (rs->rs_nrates < ARRAY_SIZE(rates))
|
|
return 0;
|
|
for (i = 0; i < ARRAY_SIZE(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;
|
|
}
|
|
|
|
static const struct ieee80211_rateset basic11g[IEEE80211_MODE_MAX] = {
|
|
{ 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 */
|
|
{ 3, { 12, 24, 48 } }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_TURBO_G (mixed b/g) */
|
|
};
|
|
|
|
/*
|
|
* Mark the basic rates for the 11g rate table based on the
|
|
* specified mode. For 11b compatibility we mark only 11b
|
|
* rates. There's also a pseudo 11a-mode used to mark only
|
|
* the basic OFDM rates; this is used to exclude 11b stations
|
|
* from an 11g bss.
|
|
*/
|
|
void
|
|
ieee80211_set11gbasicrates(struct ieee80211_rateset *rs, enum ieee80211_phymode mode)
|
|
{
|
|
int i, j;
|
|
|
|
KASSERT(mode < IEEE80211_MODE_MAX, ("invalid mode %u", mode));
|
|
for (i = 0; i < rs->rs_nrates; i++) {
|
|
rs->rs_rates[i] &= IEEE80211_RATE_VAL;
|
|
for (j = 0; j < basic11g[mode].rs_nrates; j++)
|
|
if (basic11g[mode].rs_rates[j] == rs->rs_rates[i]) {
|
|
rs->rs_rates[i] |= IEEE80211_RATE_BASIC;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Deduce the 11g setup by examining the rates
|
|
* that are marked basic.
|
|
*/
|
|
enum ieee80211_phymode
|
|
ieee80211_get11gbasicrates(struct ieee80211_rateset *rs)
|
|
{
|
|
struct ieee80211_rateset basic;
|
|
int i;
|
|
|
|
memset(&basic, 0, sizeof(basic));
|
|
for (i = 0; i < rs->rs_nrates; i++)
|
|
if (rs->rs_rates[i] & IEEE80211_RATE_BASIC)
|
|
basic.rs_rates[basic.rs_nrates++] =
|
|
rs->rs_rates[i] & IEEE80211_RATE_VAL;
|
|
for (i = 0; i < IEEE80211_MODE_MAX; i++)
|
|
if (memcmp(&basic, &basic11g[i], sizeof(basic)) == 0)
|
|
return i;
|
|
return IEEE80211_MODE_AUTO;
|
|
}
|
|
|
|
void
|
|
ieee80211_wme_initparams(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
|
|
IEEE80211_LOCK_IRQ(ic);
|
|
ieee80211_wme_initparams_locked(vap);
|
|
IEEE80211_UNLOCK_IRQ(ic);
|
|
}
|
|
|
|
void
|
|
ieee80211_wme_initparams_locked(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
struct phyParamType {
|
|
u_int8_t aifsn;
|
|
u_int8_t logcwmin;
|
|
u_int8_t logcwmax;
|
|
u_int16_t txopLimit;
|
|
u_int8_t acm;
|
|
};
|
|
enum ieee80211_phymode mode;
|
|
|
|
struct phyParamType *pPhyParam, *pBssPhyParam;
|
|
|
|
static 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, 5, 7, 0, 0 },
|
|
/* IEEE80211_MODE_11G */ { 3, 4, 6, 0, 0 },
|
|
/* IEEE80211_MODE_FH */ { 3, 5, 7, 0, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 2, 3, 5, 0, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 2, 3, 5, 0, 0 }};
|
|
static 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, 5, 10, 0, 0 },
|
|
/* IEEE80211_MODE_11G */ { 7, 4, 10, 0, 0 },
|
|
/* IEEE80211_MODE_FH */ { 7, 5, 10, 0, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 7, 3, 10, 0, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 7, 3, 10, 0, 0 }};
|
|
static 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, 4, 5, 188, 0 },
|
|
/* IEEE80211_MODE_11G */ { 1, 3, 4, 94, 0 },
|
|
/* IEEE80211_MODE_FH */ { 1, 4, 5, 188, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 1, 2, 3, 94, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 1, 2, 3, 94, 0 }};
|
|
static 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, 3, 4, 102, 0 },
|
|
/* IEEE80211_MODE_11G */ { 1, 2, 3, 47, 0 },
|
|
/* IEEE80211_MODE_FH */ { 1, 3, 4, 102, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 1, 2, 2, 47, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 1, 2, 2, 47, 0 }};
|
|
|
|
static 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, 5, 10, 0, 0 },
|
|
/* IEEE80211_MODE_11G */ { 3, 4, 10, 0, 0 },
|
|
/* IEEE80211_MODE_FH */ { 3, 5, 10, 0, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 2, 3, 10, 0, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 2, 3, 10, 0, 0 }};
|
|
static 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, 4, 5, 188, 0 },
|
|
/* IEEE80211_MODE_11G */ { 2, 3, 4, 94, 0 },
|
|
/* IEEE80211_MODE_FH */ { 2, 4, 5, 188, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 2, 2, 3, 94, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 2, 2, 3, 94, 0 }};
|
|
static 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, 3, 4, 102, 0 },
|
|
/* IEEE80211_MODE_11G */ { 2, 2, 3, 47, 0 },
|
|
/* IEEE80211_MODE_FH */ { 2, 3, 4, 102, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 1, 2, 2, 47, 0 },
|
|
/* IEEE80211_MODE_TURBO */ { 1, 2, 2, 47, 0 }};
|
|
|
|
int i;
|
|
|
|
IEEE80211_LOCK_ASSERT(ic);
|
|
|
|
if ((ic->ic_caps & IEEE80211_C_WME) == 0)
|
|
return;
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
if (ic->ic_opmode == IEEE80211_M_HOSTAP) {
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_acm =
|
|
pPhyParam->acm;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_aifsn =
|
|
pPhyParam->aifsn;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_logcwmin =
|
|
pPhyParam->logcwmin;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_logcwmax =
|
|
pPhyParam->logcwmax;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_txopLimit =
|
|
pPhyParam->txopLimit;
|
|
} else {
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_acm =
|
|
pBssPhyParam->acm;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_aifsn =
|
|
pBssPhyParam->aifsn;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_logcwmin =
|
|
pBssPhyParam->logcwmin;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_logcwmax =
|
|
pBssPhyParam->logcwmax;
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_txopLimit =
|
|
pBssPhyParam->txopLimit;
|
|
}
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_acm =
|
|
pBssPhyParam->acm;
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_aifsn =
|
|
pBssPhyParam->aifsn;
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_logcwmin =
|
|
pBssPhyParam->logcwmin;
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_logcwmax =
|
|
pBssPhyParam->logcwmax;
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_txopLimit =
|
|
pBssPhyParam->txopLimit;
|
|
}
|
|
/* NB: check ic_bss to avoid NULL deref on initial attach */
|
|
if (vap->iv_bss != NULL) {
|
|
/*
|
|
* Calculate aggressive mode switching threshold based
|
|
* on beacon interval.
|
|
*/
|
|
wme->wme_hipri_switch_thresh =
|
|
(HIGH_PRI_SWITCH_THRESH * vap->iv_bss->ni_intval) / 100;
|
|
ieee80211_wme_updateparams_locked(vap);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Update WME parameters for ourself and the BSS.
|
|
*/
|
|
void
|
|
ieee80211_wme_updateparams_locked(struct ieee80211vap *vap)
|
|
{
|
|
static const struct { u_int8_t aifsn; u_int8_t logcwmin; u_int8_t logcwmax; u_int16_t txopLimit;}
|
|
phyParam[IEEE80211_MODE_MAX] = {
|
|
/* IEEE80211_MODE_AUTO */ { 2, 4, 10, 64 },
|
|
/* IEEE80211_MODE_11A */ { 2, 4, 10, 64 },
|
|
/* IEEE80211_MODE_11B */ { 2, 5, 10, 64 },
|
|
/* IEEE80211_MODE_11G */ { 2, 4, 10, 64 },
|
|
/* IEEE80211_MODE_FH */ { 2, 5, 10, 64 },
|
|
/* IEEE80211_MODE_TURBO */ { 1, 3, 10, 64 }};
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
enum ieee80211_phymode mode;
|
|
int i;
|
|
|
|
IEEE80211_LOCK_ASSERT(vap->iv_ic);
|
|
|
|
/* set up the channel access parameters for the physical device */
|
|
|
|
for (i = 0; i < WME_NUM_AC; i++) {
|
|
wme->wme_chanParams.cap_wmeParams[i].wmep_aifsn =
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_aifsn;
|
|
wme->wme_chanParams.cap_wmeParams[i].wmep_logcwmin =
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_logcwmin;
|
|
wme->wme_chanParams.cap_wmeParams[i].wmep_logcwmax =
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_logcwmax;
|
|
wme->wme_chanParams.cap_wmeParams[i].wmep_txopLimit =
|
|
wme->wme_wmeChanParams.cap_wmeParams[i].wmep_txopLimit;
|
|
wme->wme_bssChanParams.cap_wmeParams[i].wmep_aifsn =
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_aifsn;
|
|
wme->wme_bssChanParams.cap_wmeParams[i].wmep_logcwmin =
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_logcwmin;
|
|
wme->wme_bssChanParams.cap_wmeParams[i].wmep_logcwmax =
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].wmep_logcwmax;
|
|
wme->wme_bssChanParams.cap_wmeParams[i].wmep_txopLimit =
|
|
wme->wme_wmeBssChanParams.cap_wmeParams[i].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;
|
|
if ((vap->iv_opmode == IEEE80211_M_HOSTAP &&
|
|
(wme->wme_flags & WME_F_AGGRMODE) != 0) ||
|
|
(vap->iv_opmode != IEEE80211_M_HOSTAP &&
|
|
(vap->iv_bss->ni_flags & IEEE80211_NODE_QOS) == 0) ||
|
|
(vap->iv_flags & IEEE80211_F_WME) == 0) {
|
|
struct ieee80211vap *tmpvap;
|
|
u_int8_t burstEnabled = 0;
|
|
/* check if bursting enabled on at least one vap */
|
|
TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
|
|
if (tmpvap->iv_ath_cap & IEEE80211_ATHC_BURST) {
|
|
burstEnabled = 1;
|
|
break;
|
|
}
|
|
}
|
|
wme->wme_chanParams.cap_wmeParams[WME_AC_BE].wmep_aifsn =
|
|
phyParam[mode].aifsn;
|
|
wme->wme_chanParams.cap_wmeParams[WME_AC_BE].wmep_logcwmin =
|
|
phyParam[mode].logcwmin;
|
|
wme->wme_chanParams.cap_wmeParams[WME_AC_BE].wmep_logcwmax =
|
|
phyParam[mode].logcwmax;
|
|
wme->wme_chanParams.cap_wmeParams[WME_AC_BE].wmep_txopLimit =
|
|
burstEnabled ? phyParam[mode].txopLimit : 0;
|
|
wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE].wmep_aifsn =
|
|
phyParam[mode].aifsn;
|
|
wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE].wmep_logcwmin =
|
|
phyParam[mode].logcwmin;
|
|
wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE].wmep_logcwmax =
|
|
phyParam[mode].logcwmax;
|
|
wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE].wmep_txopLimit =
|
|
burstEnabled ? phyParam[mode].txopLimit : 0;
|
|
}
|
|
|
|
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] = {
|
|
/* 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
|
|
};
|
|
|
|
wme->wme_chanParams.cap_wmeParams[WME_AC_BE].wmep_logcwmin =
|
|
wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE].wmep_logcwmin =
|
|
logCwMin[mode];
|
|
}
|
|
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_count =
|
|
(wme->wme_bssChanParams.cap_info_count + 1) & WME_QOSINFO_COUNT;
|
|
vap->iv_flags |= IEEE80211_F_WMEUPDATE;
|
|
}
|
|
|
|
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_count :
|
|
wme->wme_bssChanParams.cap_info_count);
|
|
}
|
|
|
|
EXPORT_SYMBOL(ieee80211_wme_updateparams);
|
|
|
|
void
|
|
ieee80211_wme_updateparams(struct ieee80211vap *vap)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
|
|
if (ic->ic_caps & IEEE80211_C_WME) {
|
|
IEEE80211_LOCK_IRQ(ic);
|
|
ieee80211_wme_updateparams_locked(vap);
|
|
IEEE80211_UNLOCK_IRQ(ic);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Start a vap. If this is the first vap running on the
|
|
* underlying device then we first bring it up.
|
|
*/
|
|
int
|
|
ieee80211_init(struct net_device *dev, int forcescan)
|
|
{
|
|
#define IS_RUNNING(_dev) \
|
|
((_dev->flags & (IFF_RUNNING|IFF_UP)) == (IFF_RUNNING|IFF_UP))
|
|
struct ieee80211vap *vap = netdev_priv(dev);
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct net_device *parent = ic->ic_dev;
|
|
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"start running (state=%d)\n", vap->iv_state);
|
|
|
|
|
|
if ((dev->flags & IFF_RUNNING) == 0) {
|
|
if (ic->ic_nopened++ == 0 &&
|
|
(parent->flags & IFF_RUNNING) == 0)
|
|
dev_open(parent);
|
|
/*
|
|
* Mark us running. Note that we do this after
|
|
* opening the parent device to avoid recursion.
|
|
*/
|
|
dev->flags |= IFF_RUNNING; /* mark us running */
|
|
}
|
|
/*
|
|
* If the parent is up and running, then kick the
|
|
* 802.11 state machine as appropriate.
|
|
* XXX parent should always be up+running
|
|
*/
|
|
if (IS_RUNNING(ic->ic_dev)) {
|
|
if (vap->iv_opmode == IEEE80211_M_STA) {
|
|
if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) {
|
|
/* 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 ||
|
|
forcescan) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE |
|
|
IEEE80211_MSG_DEBUG,
|
|
"Bringing vap %p[%s] "
|
|
"to %s\n",
|
|
vap, vap->iv_nickname,
|
|
ieee80211_state_name
|
|
[IEEE80211_S_SCAN]);
|
|
ieee80211_new_state(vap,
|
|
IEEE80211_S_SCAN, 0);
|
|
} else {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE |
|
|
IEEE80211_MSG_DEBUG,
|
|
"Bringing vap %p[%s] "
|
|
"to %s\n",
|
|
vap, vap->iv_nickname,
|
|
ieee80211_state_name
|
|
[IEEE80211_S_ASSOC]);
|
|
ieee80211_new_state(vap,
|
|
IEEE80211_S_ASSOC, 1);
|
|
}
|
|
}
|
|
} else {
|
|
/*
|
|
* When the old state is running the vap must
|
|
* be brought to init.
|
|
*/
|
|
if (vap->iv_state == IEEE80211_S_RUN) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE |
|
|
IEEE80211_MSG_DEBUG,
|
|
"Bringing vap %p[%s] to %s\n",
|
|
vap, vap->iv_nickname,
|
|
ieee80211_state_name
|
|
[IEEE80211_S_INIT]);
|
|
ieee80211_new_state(vap,
|
|
IEEE80211_S_INIT, -1);
|
|
}
|
|
/*
|
|
* For monitor+wds modes 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.
|
|
*/
|
|
if (vap->iv_opmode == IEEE80211_M_MONITOR ||
|
|
vap->iv_opmode == IEEE80211_M_WDS) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE |
|
|
IEEE80211_MSG_DEBUG,
|
|
"Bringing vap %p[%s] to %s\n",
|
|
vap, vap->iv_nickname,
|
|
ieee80211_state_name
|
|
[IEEE80211_S_RUN]);
|
|
ieee80211_new_state(vap, IEEE80211_S_RUN, -1);
|
|
} else {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE |
|
|
IEEE80211_MSG_DEBUG,
|
|
"Bringing vap %p[%s] to %s\n",
|
|
vap, vap->iv_nickname,
|
|
ieee80211_state_name
|
|
[IEEE80211_S_SCAN]);
|
|
ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
#undef IS_RUNNING
|
|
}
|
|
|
|
int
|
|
ieee80211_open(struct net_device *dev)
|
|
{
|
|
return ieee80211_init(dev, 0);
|
|
}
|
|
|
|
/*
|
|
* Start all runnable VAPs on a device.
|
|
*/
|
|
void
|
|
ieee80211_start_running(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
struct net_device *dev;
|
|
|
|
/* XXX locking */
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
dev = vap->iv_dev;
|
|
/* NB: avoid recursion */
|
|
if ((dev->flags & IFF_UP) && !(dev->flags & IFF_RUNNING))
|
|
ieee80211_open(dev);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_start_running);
|
|
|
|
/*
|
|
* Stop a vap. We force it down using the state machine
|
|
* then mark its device not running. If this is the last
|
|
* vap running on the underlying device then we close it
|
|
* too to ensure it will be properly initialized when the
|
|
* next vap is brought up.
|
|
*/
|
|
int
|
|
ieee80211_stop(struct net_device *dev)
|
|
{
|
|
struct ieee80211vap *vap = netdev_priv(dev);
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct net_device *parent = ic->ic_dev;
|
|
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"%s\n", "stop running");
|
|
|
|
ieee80211_new_state(vap, IEEE80211_S_INIT, -1);
|
|
if (dev->flags & IFF_RUNNING) {
|
|
dev->flags &= ~IFF_RUNNING; /* mark us stopped */
|
|
del_timer(&vap->iv_mgtsend);
|
|
if (--ic->ic_nopened == 0 && (parent->flags & IFF_RUNNING))
|
|
dev_close(parent);
|
|
}
|
|
#ifdef ATH_SUPERG_XR
|
|
/*
|
|
* also stop the XR vap.
|
|
*/
|
|
if (vap->iv_xrvap && !(vap->iv_flags & IEEE80211_F_XR)) {
|
|
ieee80211_stop(vap->iv_xrvap->iv_dev);
|
|
del_timer(&vap->iv_xrvapstart);
|
|
vap->iv_xrvap->iv_dev->flags = dev->flags;
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_stop);
|
|
|
|
/*
|
|
* Stop all VAPs running on a device.
|
|
*/
|
|
void
|
|
ieee80211_stop_running(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
struct net_device *dev;
|
|
|
|
/* XXX locking */
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
dev = vap->iv_dev;
|
|
if (dev->flags & IFF_RUNNING) /* NB: avoid recursion */
|
|
ieee80211_stop(dev);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_stop_running);
|
|
|
|
#ifdef ATH_SUPERG_DYNTURBO
|
|
/*
|
|
* Switch between turbo and non-turbo operating modes.
|
|
* Use the specified channel flags to locate the new
|
|
* channel, update 802.11 state, and then call back into
|
|
* the driver to effect the change.
|
|
*/
|
|
void
|
|
ieee80211_dturbo_switch(struct ieee80211com *ic, int newflags)
|
|
{
|
|
#ifdef IEEE80211_DEBUG
|
|
/* XXX use first vap for debug flags */
|
|
struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps);
|
|
#endif
|
|
struct ieee80211_channel *chan;
|
|
|
|
chan = ieee80211_find_channel(ic, ic->ic_bsschan->ic_freq, newflags);
|
|
if (chan == NULL) { /* XXX should not happen */
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPG,
|
|
"%s: no channel with freq %u flags 0x%x\n",
|
|
__func__, ic->ic_bsschan->ic_freq, newflags);
|
|
return;
|
|
}
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_SUPG,
|
|
"%s: %s -> %s (freq %u flags 0x%x)\n", __func__,
|
|
ieee80211_phymode_name[ieee80211_chan2mode(ic->ic_bsschan)],
|
|
ieee80211_phymode_name[ieee80211_chan2mode(chan)],
|
|
chan->ic_freq, chan->ic_flags);
|
|
|
|
ic->ic_bsschan = chan;
|
|
ic->ic_curchan = chan;
|
|
ic->ic_set_channel(ic);
|
|
/* NB: do not need to reset ERP state because in sta mode */
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_dturbo_switch);
|
|
#endif /* ATH_SUPERG_DYNTURBO */
|
|
|
|
void
|
|
ieee80211_beacon_miss(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211vap *vap;
|
|
|
|
if (ic->ic_flags & IEEE80211_F_SCAN) {
|
|
/* XXX check ic_curchan != ic_bsschan? */
|
|
return;
|
|
}
|
|
/* XXX locking */
|
|
TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"%s\n", "beacon miss");
|
|
|
|
/*
|
|
* Our handling is only meaningful for stations that are
|
|
* associated; any other conditions else will be handled
|
|
* through different means (e.g. the tx timeout on mgt frames).
|
|
*/
|
|
if (vap->iv_opmode != IEEE80211_M_STA ||
|
|
vap->iv_state != IEEE80211_S_RUN)
|
|
continue;
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
|
|
#ifdef ATH_SUPERG_DYNTURBO
|
|
/*
|
|
* If we receive a beacon miss interrupt when using
|
|
* dynamic turbo, attempt to switch modes before
|
|
* reassociating.
|
|
*/
|
|
if (IEEE80211_ATH_CAP(vap, vap->iv_bss, IEEE80211_ATHC_TURBOP))
|
|
ieee80211_dturbo_switch(ic,
|
|
ic->ic_bsschan->ic_flags ^
|
|
IEEE80211_CHAN_TURBO);
|
|
#endif /* ATH_SUPERG_DYNTURBO */
|
|
/*
|
|
* Try to reassociate before scanning for a new ap.
|
|
*/
|
|
ieee80211_new_state(vap, IEEE80211_S_ASSOC, 1);
|
|
} else {
|
|
/*
|
|
* Somebody else is controlling state changes (e.g.
|
|
* a user-mode app) don't do anything that would
|
|
* confuse them; just drop into scan mode so they'll
|
|
* notified of the state change and given control.
|
|
*/
|
|
ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
|
|
}
|
|
}
|
|
}
|
|
EXPORT_SYMBOL(ieee80211_beacon_miss);
|
|
|
|
/*
|
|
* STA software beacon timer callback. This is called
|
|
* only when we have a series beacon misses.
|
|
*/
|
|
static void
|
|
ieee80211_sta_swbmiss(unsigned long arg)
|
|
{
|
|
struct ieee80211vap *vap = (struct ieee80211vap *)arg;
|
|
ieee80211_beacon_miss(vap->iv_ic);
|
|
}
|
|
|
|
/*
|
|
* Per-ieee80211vap watchdog timer callback. This
|
|
* is used only to timeout the xmit of management frames.
|
|
*/
|
|
static void
|
|
ieee80211_tx_timeout(unsigned long arg)
|
|
{
|
|
struct ieee80211vap *vap = (struct ieee80211vap *)arg;
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: state %s%s\n", __func__,
|
|
ieee80211_state_name[vap->iv_state],
|
|
vap->iv_ic->ic_flags & IEEE80211_F_SCAN ? ", scan active" : "");
|
|
|
|
if (vap->iv_state != IEEE80211_S_INIT &&
|
|
(vap->iv_ic->ic_flags & IEEE80211_F_SCAN) == 0) {
|
|
/*
|
|
* NB: it's safe to specify a timeout as the reason here;
|
|
* it'll only be used in the right state.
|
|
*/
|
|
ieee80211_new_state(vap, IEEE80211_S_SCAN,
|
|
IEEE80211_SCAN_FAIL_TIMEOUT);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sta_disassoc(void *arg, struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211vap *vap = arg;
|
|
|
|
if (ni->ni_vap == vap && ni->ni_associd != 0) {
|
|
IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
|
|
IEEE80211_REASON_ASSOC_LEAVE);
|
|
ieee80211_node_leave(ni);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sta_deauth(void *arg, struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211vap *vap = arg;
|
|
|
|
if (ni->ni_vap == vap)
|
|
IEEE80211_SEND_MGMT(ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
|
|
IEEE80211_REASON_ASSOC_LEAVE);
|
|
}
|
|
|
|
/*
|
|
* Context: softIRQ (tasklet) and process
|
|
*/
|
|
int
|
|
ieee80211_new_state(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
int rc;
|
|
|
|
IEEE80211_VAPS_LOCK_BH(ic);
|
|
rc = vap->iv_newstate(vap, nstate, arg);
|
|
IEEE80211_VAPS_UNLOCK_BH(ic);
|
|
return rc;
|
|
}
|
|
|
|
static int
|
|
__ieee80211_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
struct ieee80211_node *ni;
|
|
enum ieee80211_state ostate;
|
|
|
|
ostate = vap->iv_state;
|
|
vap->iv_state = nstate; /* state transition */
|
|
del_timer(&vap->iv_mgtsend);
|
|
if ((vap->iv_opmode != IEEE80211_M_HOSTAP) &&
|
|
(ostate != IEEE80211_S_SCAN))
|
|
ieee80211_cancel_scan(vap); /* background scan */
|
|
ni = vap->iv_bss; /* NB: no reference held */
|
|
switch (nstate) {
|
|
case IEEE80211_S_INIT:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
switch (vap->iv_opmode) {
|
|
case IEEE80211_M_STA:
|
|
IEEE80211_SEND_MGMT(ni,
|
|
IEEE80211_FC0_SUBTYPE_DISASSOC,
|
|
IEEE80211_REASON_ASSOC_LEAVE);
|
|
ieee80211_sta_leave(ni);
|
|
break;
|
|
case IEEE80211_M_HOSTAP:
|
|
ieee80211_iterate_nodes(&ic->ic_sta,
|
|
sta_disassoc, vap);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
goto reset;
|
|
case IEEE80211_S_ASSOC:
|
|
switch (vap->iv_opmode) {
|
|
case IEEE80211_M_STA:
|
|
IEEE80211_SEND_MGMT(ni,
|
|
IEEE80211_FC0_SUBTYPE_DEAUTH,
|
|
IEEE80211_REASON_AUTH_LEAVE);
|
|
break;
|
|
case IEEE80211_M_HOSTAP:
|
|
ieee80211_iterate_nodes(&ic->ic_sta,
|
|
sta_deauth, vap);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
goto reset;
|
|
case IEEE80211_S_SCAN:
|
|
ieee80211_cancel_scan(vap);
|
|
goto reset;
|
|
case IEEE80211_S_AUTH:
|
|
reset:
|
|
ieee80211_reset_bss(vap);
|
|
break;
|
|
}
|
|
if (vap->iv_auth != NULL && vap->iv_auth->ia_detach != NULL)
|
|
vap->iv_auth->ia_detach(vap);
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
createibss:
|
|
if ((vap->iv_opmode == IEEE80211_M_HOSTAP ||
|
|
vap->iv_opmode == IEEE80211_M_IBSS ||
|
|
vap->iv_opmode == IEEE80211_M_AHDEMO) &&
|
|
vap->iv_des_chan != IEEE80211_CHAN_ANYC) {
|
|
/*
|
|
* AP operation and we already have a channel;
|
|
* bypass the scan and startup immediately.
|
|
*/
|
|
ieee80211_create_ibss(vap, vap->iv_des_chan);
|
|
} else {
|
|
ieee80211_check_scan(vap,
|
|
IEEE80211_SCAN_ACTIVE |
|
|
IEEE80211_SCAN_FLUSH,
|
|
IEEE80211_SCAN_FOREVER,
|
|
vap->iv_des_nssid, vap->iv_des_ssid,
|
|
NULL);
|
|
}
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
case IEEE80211_S_AUTH:
|
|
case IEEE80211_S_ASSOC:
|
|
/*
|
|
* These can happen either because of a timeout
|
|
* on an assoc/auth response or because of a
|
|
* change in state that requires a reset. For
|
|
* the former we're called with a non-zero arg
|
|
* that is the cause for the failure; pass this
|
|
* to the scan code so it can update state.
|
|
* Otherwise trigger a new scan unless we're in
|
|
* manual roaming mode in which case an application
|
|
* must issue an explicit scan request.
|
|
*/
|
|
if (arg != 0)
|
|
ieee80211_scan_assoc_fail(ic,
|
|
vap->iv_bss->ni_macaddr, arg);
|
|
|
|
/* ic_roaming is relevant to STA mode only. Since DFS
|
|
* CAC does a SCAN -> SCAN transition, this code was
|
|
* causing a spurious scan that was stopping DFS CAC
|
|
* altogether */
|
|
if (vap->iv_opmode == IEEE80211_M_STA &&
|
|
ic->ic_roaming == IEEE80211_ROAMING_AUTO)
|
|
ieee80211_check_scan(vap,
|
|
IEEE80211_SCAN_ACTIVE,
|
|
IEEE80211_SCAN_FOREVER,
|
|
vap->iv_des_nssid, vap->iv_des_ssid,
|
|
NULL);
|
|
break;
|
|
case IEEE80211_S_RUN: /* beacon miss */
|
|
if (vap->iv_opmode == IEEE80211_M_STA) {
|
|
ieee80211_sta_leave(ni);
|
|
vap->iv_flags &= ~IEEE80211_F_SIBSS; /* XXX */
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
|
|
ieee80211_check_scan(vap,
|
|
IEEE80211_SCAN_ACTIVE,
|
|
IEEE80211_SCAN_FOREVER,
|
|
vap->iv_des_nssid,
|
|
vap->iv_des_ssid,
|
|
NULL);
|
|
} else {
|
|
ieee80211_iterate_nodes(&ic->ic_sta,
|
|
sta_disassoc, vap);
|
|
goto createibss;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
/* auth frames are possible between IBSS nodes,
|
|
* see 802.11-1999, chapter 5.7.6 */
|
|
KASSERT(vap->iv_opmode == IEEE80211_M_STA ||
|
|
vap->iv_opmode == IEEE80211_M_IBSS,
|
|
("switch to %s state when operating in mode %u",
|
|
ieee80211_state_name[nstate], vap->iv_opmode));
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
case IEEE80211_S_SCAN:
|
|
IEEE80211_SEND_MGMT(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(ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 2);
|
|
break;
|
|
case IEEE80211_FC0_SUBTYPE_DEAUTH:
|
|
IEEE80211_SEND_MGMT(ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 1);
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
switch (arg) {
|
|
case IEEE80211_FC0_SUBTYPE_AUTH:
|
|
IEEE80211_SEND_MGMT(ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 2);
|
|
vap->iv_state = ostate; /* stay RUN */
|
|
break;
|
|
case IEEE80211_FC0_SUBTYPE_DEAUTH:
|
|
ieee80211_sta_leave(ni);
|
|
if (vap->iv_opmode == IEEE80211_M_STA &&
|
|
ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
|
|
/* try to reauth */
|
|
IEEE80211_SEND_MGMT(ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 1);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_ASSOC:
|
|
KASSERT(vap->iv_opmode == IEEE80211_M_STA,
|
|
("switch to %s state when operating in mode %u",
|
|
ieee80211_state_name[nstate], vap->iv_opmode));
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
case IEEE80211_S_SCAN:
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY,
|
|
"%s: invalid transition\n", __func__);
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
case IEEE80211_S_ASSOC:
|
|
IEEE80211_SEND_MGMT(ni,
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
ieee80211_sta_leave(ni);
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
|
|
/* NB: caller specifies ASSOC/REASSOC by arg */
|
|
IEEE80211_SEND_MGMT(ni, arg ?
|
|
IEEE80211_FC0_SUBTYPE_REASSOC_REQ :
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
if (vap->iv_flags & IEEE80211_F_WPA) {
|
|
/* XXX validate prerequisites */
|
|
}
|
|
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
if (vap->iv_opmode == IEEE80211_M_MONITOR ||
|
|
vap->iv_opmode == IEEE80211_M_WDS ||
|
|
vap->iv_opmode == IEEE80211_M_HOSTAP) {
|
|
/*
|
|
* Already have a channel; bypass the
|
|
* scan and startup immediately.
|
|
*/
|
|
ieee80211_create_ibss(vap, ic->ic_curchan);
|
|
|
|
/* In WDS mode, allocate and initialize peer node. */
|
|
if (vap->iv_opmode == IEEE80211_M_WDS) {
|
|
/* XXX: This is horribly non-atomic. */
|
|
struct ieee80211_node *wds_ni =
|
|
ieee80211_find_node(&ic->ic_sta,
|
|
vap->wds_mac);
|
|
|
|
if (wds_ni == NULL) {
|
|
wds_ni = ieee80211_alloc_node_table(
|
|
vap,
|
|
vap->wds_mac);
|
|
if (wds_ni != NULL) {
|
|
ieee80211_add_wds_addr(
|
|
&ic->ic_sta,
|
|
wds_ni,
|
|
vap->wds_mac,
|
|
1);
|
|
ieee80211_ref_node(wds_ni); /* pin in memory */
|
|
}
|
|
else
|
|
IEEE80211_DPRINTF(
|
|
vap,
|
|
IEEE80211_MSG_NODE,
|
|
"%s: Unable to "
|
|
"allocate node for "
|
|
"WDS: " MAC_FMT "\n",
|
|
__func__,
|
|
MAC_ADDR(
|
|
vap->wds_mac)
|
|
);
|
|
}
|
|
|
|
if (wds_ni != NULL) {
|
|
ieee80211_node_authorize(wds_ni);
|
|
wds_ni->ni_chan =
|
|
vap->iv_bss->ni_chan;
|
|
wds_ni->ni_capinfo =
|
|
ni->ni_capinfo;
|
|
wds_ni->ni_associd = 1;
|
|
wds_ni->ni_ath_flags =
|
|
vap->iv_ath_cap;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
/* fall thru... */
|
|
case IEEE80211_S_AUTH:
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_ANY,
|
|
"%s: invalid transition\n", __func__);
|
|
break;
|
|
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", __func__,
|
|
ni->ni_txrate));
|
|
#ifdef IEEE80211_DEBUG
|
|
if (ieee80211_msg_debug(vap)) {
|
|
ieee80211_note(vap, "%s with " MAC_FMT " ssid ",
|
|
(vap->iv_opmode == IEEE80211_M_STA ?
|
|
"associated" : "synchronized "),
|
|
MAC_ADDR(vap->iv_bssid));
|
|
ieee80211_print_essid(vap->iv_bss->ni_essid,
|
|
ni->ni_esslen);
|
|
printk(" channel %d start %uMb\n",
|
|
ieee80211_chan2ieee(ic, ic->ic_curchan),
|
|
IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate]));
|
|
}
|
|
#endif
|
|
if (vap->iv_opmode == IEEE80211_M_STA) {
|
|
ieee80211_scan_assoc_success(ic,
|
|
ni->ni_macaddr);
|
|
ieee80211_notify_node_join(ni,
|
|
(arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP) | \
|
|
(arg == IEEE80211_FC0_SUBTYPE_REASSOC_RESP));
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* WDS/Repeater: Start software beacon timer for STA */
|
|
if (ostate != IEEE80211_S_RUN &&
|
|
(vap->iv_opmode == IEEE80211_M_STA &&
|
|
vap->iv_flags_ext & IEEE80211_FEXT_SWBMISS)) {
|
|
vap->iv_swbmiss.function = ieee80211_sta_swbmiss;
|
|
vap->iv_swbmiss.data = (unsigned long) vap;
|
|
vap->iv_swbmiss_period = IEEE80211_TU_TO_JIFFIES(
|
|
vap->iv_ic->ic_bmissthreshold * ni->ni_intval);
|
|
|
|
mod_timer(&vap->iv_swbmiss, jiffies + vap->iv_swbmiss_period);
|
|
}
|
|
|
|
/*
|
|
* Start/stop the authenticator when operating as an
|
|
* AP. We delay until here to allow configuration to
|
|
* happen out of order.
|
|
*/
|
|
/* XXX WDS? */
|
|
if (vap->iv_opmode == IEEE80211_M_HOSTAP && /* XXX IBSS/AHDEMO */
|
|
vap->iv_auth->ia_attach != NULL) {
|
|
/* XXX check failure */
|
|
vap->iv_auth->ia_attach(vap);
|
|
} else if (vap->iv_auth->ia_detach != NULL)
|
|
vap->iv_auth->ia_detach(vap);
|
|
/*
|
|
* When 802.1x is not in use mark the port authorized
|
|
* at this point so traffic can flow.
|
|
*/
|
|
if (ni->ni_authmode != IEEE80211_AUTH_8021X)
|
|
ieee80211_node_authorize(ni);
|
|
#ifdef ATH_SUPERG_XR
|
|
/*
|
|
* fire a timer to bring up XR vap if configured.
|
|
*/
|
|
if (ostate != IEEE80211_S_RUN &&
|
|
vap->iv_xrvap &&
|
|
!(vap->iv_flags & IEEE80211_F_XR)) {
|
|
vap->iv_xrvapstart.function = ieee80211_start_xrvap;
|
|
vap->iv_xrvapstart.data = (unsigned long) vap->iv_xrvap;
|
|
mod_timer(&vap->iv_xrvapstart, jiffies + HZ); /* start xr vap on next second */
|
|
/*
|
|
* do not let the normal vap automatically bring up XR vap.
|
|
* let the timer handler start the XR vap. if you let the
|
|
* normal vap automatically start the XR vap normal vap will not
|
|
* have the bssid initialized and the XR vap will use the
|
|
* invalid bssid in XRIE of its beacon.
|
|
*/
|
|
if (vap->iv_xrvap->iv_flags_ext & IEEE80211_FEXT_SCAN_PENDING)
|
|
vap->iv_xrvap->iv_flags_ext &= ~IEEE80211_FEXT_SCAN_PENDING;
|
|
}
|
|
/*
|
|
* when an XR vap transitions to RUN state,
|
|
* normal vap needs to update the XR IE
|
|
* with the xr vaps MAC address.
|
|
*/
|
|
if (vap->iv_flags & IEEE80211_F_XR)
|
|
vap->iv_xrvap->iv_flags |= IEEE80211_F_XRUPDATE;
|
|
#endif
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Get the dominant state of the device (init, running, or scanning
|
|
* (and/or associating)) */
|
|
static int get_dominant_state(struct ieee80211com *ic) {
|
|
int nscanning = 0;
|
|
int nrunning = 0;
|
|
struct ieee80211vap *tmpvap;
|
|
|
|
TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
|
|
if (tmpvap->iv_opmode == IEEE80211_M_MONITOR)
|
|
/* skip monitor vaps as their
|
|
* S_RUN shouldn't have any
|
|
* influence on modifying state
|
|
* transition */
|
|
continue;
|
|
if (tmpvap->iv_state == IEEE80211_S_RUN)
|
|
nrunning++;
|
|
else if (tmpvap->iv_state == IEEE80211_S_SCAN ||
|
|
tmpvap->iv_state == IEEE80211_S_AUTH ||
|
|
tmpvap->iv_state == IEEE80211_S_ASSOC) {
|
|
KASSERT((nscanning <= 1), ("Two VAPs cannot scan at "
|
|
"the same time"));
|
|
nscanning++;
|
|
}
|
|
}
|
|
KASSERT(!(nscanning && nrunning), ("SCAN and RUN can't happen at the "
|
|
"same time"));
|
|
KASSERT((nscanning <= 1), ("Two VAPs must not SCAN at the "
|
|
"same time"));
|
|
|
|
if (nrunning > 0)
|
|
return IEEE80211_S_RUN;
|
|
else if (nscanning > 0)
|
|
return IEEE80211_S_SCAN;
|
|
else
|
|
return IEEE80211_S_INIT;
|
|
}
|
|
|
|
static void
|
|
dump_vap_states(struct ieee80211com *ic, struct ieee80211vap *highlighed)
|
|
{
|
|
/* RE-count the number of VAPs in RUN, SCAN states */
|
|
int nrunning = 0;
|
|
int nscanning = 0;
|
|
struct ieee80211vap *tmpvap;
|
|
TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
|
|
IEEE80211_DPRINTF(tmpvap, IEEE80211_MSG_STATE,
|
|
"%s: VAP %s%p[%24s]%s = %s%s%s.\n", __func__,
|
|
(highlighed == tmpvap ? "*" : " "),
|
|
tmpvap, tmpvap->iv_nickname,
|
|
(highlighed == tmpvap ? "*" : " "),
|
|
ieee80211_state_name[tmpvap->iv_state],
|
|
(tmpvap->iv_state == IEEE80211_S_RUN) ?
|
|
"[RUNNING]" : "",
|
|
(tmpvap->iv_state == IEEE80211_S_SCAN ||
|
|
tmpvap->iv_state == IEEE80211_S_AUTH ||
|
|
tmpvap->iv_state == IEEE80211_S_ASSOC) ?
|
|
"[SCANNING]" : ""
|
|
);
|
|
/* Ignore monitors they are passive */
|
|
if (tmpvap->iv_opmode == IEEE80211_M_MONITOR) {
|
|
continue;
|
|
}
|
|
if (tmpvap->iv_state == IEEE80211_S_RUN) {
|
|
KASSERT((nscanning == 0), ("SCAN and RUN can't happen "
|
|
"at the same time"));
|
|
nrunning++;
|
|
}
|
|
if (tmpvap->iv_state == IEEE80211_S_SCAN ||
|
|
/* STA in WDS/Repeater */
|
|
tmpvap->iv_state == IEEE80211_S_AUTH ||
|
|
tmpvap->iv_state == IEEE80211_S_ASSOC) {
|
|
KASSERT((nscanning == 0), ("Two VAPs cannot scan at "
|
|
"the same time"));
|
|
KASSERT((nrunning == 0), ("SCAN and RUN can't happen "
|
|
"at the same time"));
|
|
nscanning++;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
ieee80211_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ieee80211com *ic = vap->iv_ic;
|
|
enum ieee80211_state ostate;
|
|
enum ieee80211_state dstate;
|
|
int blocked = 0;
|
|
struct ieee80211vap *tmpvap;
|
|
|
|
ostate = vap->iv_state;
|
|
dstate = get_dominant_state(ic);
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: %p[%s] %s -> %s (dominant %s)\n",
|
|
__func__, vap, vap->iv_nickname,
|
|
ieee80211_state_name[ostate],
|
|
ieee80211_state_name[nstate],
|
|
ieee80211_state_name[dstate]);
|
|
|
|
switch (nstate) {
|
|
case IEEE80211_S_AUTH:
|
|
case IEEE80211_S_ASSOC:
|
|
case IEEE80211_S_SCAN:
|
|
switch (dstate) {
|
|
case IEEE80211_S_RUN:
|
|
if (vap->iv_opmode == IEEE80211_M_MONITOR ||
|
|
vap->iv_opmode == IEEE80211_M_WDS ||
|
|
vap->iv_opmode == IEEE80211_M_HOSTAP) {
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: Jumping directly to RUN "
|
|
"on VAP %p [%s].\n",
|
|
__func__, vap,
|
|
vap->iv_nickname);
|
|
/* One or more VAPs are running, so
|
|
* non-station VAPs can skip SCAN/AUTH/ASSOC
|
|
* states and just run. */
|
|
__ieee80211_newstate(vap, IEEE80211_S_RUN, arg);
|
|
} else {
|
|
/* We'll use this flag briefly to mark
|
|
* transition in progress */
|
|
ic->ic_flags_ext |= IEEE80211_FEXT_SCAN_PENDING;
|
|
/* IEEE80211_M_IBSS or IEEE80211_M_STA VAP
|
|
* is forced to scan, we need to change
|
|
* all other VAPs state to S_INIT and pend for
|
|
* the scan completion */
|
|
TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
|
|
if ((vap != tmpvap) &&
|
|
(tmpvap->iv_opmode !=
|
|
IEEE80211_M_MONITOR)) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE,
|
|
"%s: Setting "
|
|
"SCAN_PENDING "
|
|
"flag on "
|
|
"VAP %p "
|
|
"[%s].\n",
|
|
__func__,
|
|
tmpvap,
|
|
tmpvap->
|
|
iv_nickname);
|
|
tmpvap->iv_flags_ext |=
|
|
IEEE80211_FEXT_SCAN_PENDING;
|
|
if (tmpvap->iv_state !=
|
|
IEEE80211_S_INIT) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE,
|
|
"%s: "
|
|
"Forcing "
|
|
"INIT "
|
|
"state "
|
|
"on "
|
|
"VAP "
|
|
"%p "
|
|
"[%s].\n",
|
|
__func__,
|
|
tmpvap,
|
|
tmpvap->
|
|
iv_nickname);
|
|
tmpvap->iv_newstate(tmpvap,
|
|
IEEE80211_S_INIT,
|
|
0);
|
|
} else {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE,
|
|
"%s: "
|
|
"NOT "
|
|
"forcing "
|
|
"INIT "
|
|
"state "
|
|
"on "
|
|
"VAP "
|
|
"%p "
|
|
"[%s].\n",
|
|
__func__,
|
|
tmpvap,
|
|
tmpvap->
|
|
iv_nickname);
|
|
}
|
|
}
|
|
}
|
|
/* We used this flag briefly to mark transition in progress */
|
|
ic->ic_flags_ext &= ~IEEE80211_FEXT_SCAN_PENDING;
|
|
/* Transition S_INIT -> S_SCAN */
|
|
__ieee80211_newstate(vap, nstate, arg);
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
case IEEE80211_S_AUTH:
|
|
case IEEE80211_S_ASSOC:
|
|
/* this VAP was scanning */
|
|
/* STA in WDS/Repeater needs to bring up other VAPs */
|
|
if (ostate == IEEE80211_S_SCAN ||
|
|
ostate == IEEE80211_S_AUTH ||
|
|
ostate == IEEE80211_S_ASSOC) {
|
|
/* Transition (S_SCAN|S_AUTH|S_ASSOC) ->
|
|
* S_SCAN */
|
|
__ieee80211_newstate(vap, nstate, arg);
|
|
} else {
|
|
/* Someone else is scanning, so block the
|
|
* transition */
|
|
vap->iv_flags_ext |=
|
|
IEEE80211_FEXT_SCAN_PENDING;
|
|
__ieee80211_newstate(vap, IEEE80211_S_INIT,
|
|
arg);
|
|
blocked = 1;
|
|
}
|
|
break;
|
|
case IEEE80211_S_INIT:
|
|
/* Transition S_INIT -> S_SCAN */
|
|
__ieee80211_newstate(vap, nstate, arg);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case IEEE80211_S_RUN:
|
|
/* this VAP was scanning */
|
|
/* STA in WDS/Repeater needs to bring up other VAPs */
|
|
if (ostate == IEEE80211_S_SCAN ||
|
|
ostate == IEEE80211_S_AUTH ||
|
|
ostate == IEEE80211_S_ASSOC) {
|
|
/* Transition (S_SCAN|S_AUTH|S_ASSOC) -> S_RUN */
|
|
__ieee80211_newstate(vap, nstate, arg);
|
|
/* Then bring up all other vaps pending on the scan */
|
|
dstate = get_dominant_state(ic);
|
|
if (dstate == IEEE80211_S_RUN) {
|
|
TAILQ_FOREACH(tmpvap, &ic->ic_vaps, iv_next) {
|
|
if ((vap != tmpvap) &&
|
|
(tmpvap->iv_opmode !=
|
|
IEEE80211_M_MONITOR) &&
|
|
(tmpvap->iv_flags_ext &
|
|
IEEE80211_FEXT_SCAN_PENDING)) {
|
|
IEEE80211_DPRINTF(vap,
|
|
IEEE80211_MSG_STATE,
|
|
"%s: Clearing "
|
|
"SCAN_PENDING "
|
|
"flag from VAP "
|
|
"%p [%s] and "
|
|
"transitioning "
|
|
"to RUN state.\n",
|
|
__func__, tmpvap,
|
|
tmpvap->iv_nickname);
|
|
tmpvap->iv_flags_ext &=
|
|
~IEEE80211_FEXT_SCAN_PENDING;
|
|
if (tmpvap->iv_state !=
|
|
IEEE80211_S_RUN) {
|
|
tmpvap->iv_newstate(tmpvap,
|
|
IEEE80211_S_RUN, 0);
|
|
} else if (tmpvap->iv_opmode ==
|
|
IEEE80211_M_HOSTAP) {
|
|
/* Force other AP through
|
|
* -> INIT -> RUN to make
|
|
* sure beacons are
|
|
* reallocated */
|
|
tmpvap->iv_newstate(tmpvap,
|
|
IEEE80211_S_INIT, 0);
|
|
tmpvap->iv_newstate(tmpvap,
|
|
IEEE80211_S_RUN, 0);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
} else if (dstate == IEEE80211_S_SCAN) {
|
|
/* Force to scan pending... someone is scanning */
|
|
vap->iv_flags_ext |= IEEE80211_FEXT_SCAN_PENDING;
|
|
__ieee80211_newstate(vap, IEEE80211_S_INIT, arg);
|
|
blocked = 1;
|
|
} else {
|
|
__ieee80211_newstate(vap, nstate, arg);
|
|
}
|
|
break;
|
|
default:
|
|
__ieee80211_newstate(vap, nstate, arg);
|
|
}
|
|
|
|
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
|
|
"%s: %s requested transition %s -> %s on VAP %p [%s]. "
|
|
"Dominant state is %s.\n",
|
|
__func__,
|
|
(blocked ? "BLOCKED" : "ALLOWED"),
|
|
ieee80211_state_name[ostate],
|
|
ieee80211_state_name[nstate],
|
|
vap,
|
|
vap->iv_nickname,
|
|
ieee80211_state_name[dstate]);
|
|
|
|
dump_vap_states(ic, vap);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef ATH_SUPERG_XR
|
|
/*
|
|
* start the XR vap .
|
|
* called from a timer when normal vap enters RUN state .
|
|
*/
|
|
static void
|
|
ieee80211_start_xrvap(unsigned long data)
|
|
{
|
|
struct ieee80211vap *vap = (struct ieee80211vap *)data;
|
|
/* make sure that the normal vap is still in RUN state */
|
|
if (vap->iv_xrvap->iv_state == IEEE80211_S_RUN)
|
|
ieee80211_init(vap->iv_dev, 0);
|
|
}
|
|
|
|
#endif
|