6a8b18f115
o major overhaul of the way channels are handled: channels are now
fully enumerated and uniquely identify the operating characteristics;
these changes are visible to user applications which require changes
o make scanning support independent of the state machine to enable
background scanning and roaming
o move scanning support into loadable modules based on the operating
mode to enable different policies and reduce the memory footprint
on systems w/ constrained resources
o add background scanning in station mode (no support for adhoc/ibss
mode yet)
o significantly speedup sta mode scanning with a variety of techniques
o add roaming support when background scanning is supported; for now
we use a simple algorithm to trigger a roam: we threshold the rssi
and tx rate, if either drops too low we try to roam to a new ap
o add tx fragmentation support
o add first cut at 802.11n support: this code works with forthcoming
drivers but is incomplete; it's included now to establish a baseline
for other drivers to be developed and for user applications
o adjust max_linkhdr et. al. to reflect 802.11 requirements; this eliminates
prepending mbufs for traffic generated locally
o add support for Atheros protocol extensions; mainly the fast frames
encapsulation (note this can be used with any card that can tx+rx
large frames correctly)
o add sta support for ap's that beacon both WPA1+2 support
o change all data types from bsd-style to posix-style
o propagate noise floor data from drivers to net80211 and on to user apps
o correct various issues in the sta mode state machine related to handling
authentication and association failures
o enable the addition of sta mode power save support for drivers that need
net80211 support (not in this commit)
o remove old WI compatibility ioctls (wicontrol is officially dead)
o change the data structures returned for get sta info and get scan
results so future additions will not break user apps
o fixed tx rate is now maintained internally as an ieee rate and not an
index into the rate set; this needs to be extended to deal with
multi-mode operation
o add extended channel specifications to radiotap to enable 11n sniffing
Drivers:
o ath: add support for bg scanning, tx fragmentation, fast frames,
dynamic turbo (lightly tested), 11n (sniffing only and needs
new hal)
o awi: compile tested only
o ndis: lightly tested
o ipw: lightly tested
o iwi: add support for bg scanning (well tested but may have some
rough edges)
o ral, ural, rum: add suppoort for bg scanning, calibrate rssi data
o wi: lightly tested
This work is based on contributions by Atheros, kmacy, sephe, thompsa,
mlaier, kevlo, and others. Much of the scanning work was supported by
Atheros. The 11n work was supported by Marvell.
1382 lines
40 KiB
C
1382 lines
40 KiB
C
/*-
|
|
* Copyright (c) 2001 Atsushi Onoe
|
|
* Copyright (c) 2002-2007 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
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/*
|
|
* IEEE 802.11 protocol support.
|
|
*/
|
|
|
|
#include "opt_inet.h"
|
|
|
|
#include <sys/param.h>
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|
#include <sys/kernel.h>
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|
#include <sys/systm.h>
|
|
|
|
#include <sys/socket.h>
|
|
|
|
#include <net/if.h>
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|
#include <net/if_media.h>
|
|
#include <net/ethernet.h> /* XXX for ether_sprintf */
|
|
|
|
#include <net80211/ieee80211_var.h>
|
|
|
|
/* XXX tunables */
|
|
#define AGGRESSIVE_MODE_SWITCH_HYSTERESIS 3 /* pkts / 100ms */
|
|
#define HIGH_PRI_SWITCH_THRESH 10 /* pkts / 100ms */
|
|
|
|
#define IEEE80211_RATE2MBS(r) (((r) & IEEE80211_RATE_VAL) / 2)
|
|
|
|
const char *ieee80211_mgt_subtype_name[] = {
|
|
"assoc_req", "assoc_resp", "reassoc_req", "reassoc_resp",
|
|
"probe_req", "probe_resp", "reserved#6", "reserved#7",
|
|
"beacon", "atim", "disassoc", "auth",
|
|
"deauth", "reserved#13", "reserved#14", "reserved#15"
|
|
};
|
|
const char *ieee80211_ctl_subtype_name[] = {
|
|
"reserved#0", "reserved#1", "reserved#2", "reserved#3",
|
|
"reserved#3", "reserved#5", "reserved#6", "reserved#7",
|
|
"reserved#8", "reserved#9", "ps_poll", "rts",
|
|
"cts", "ack", "cf_end", "cf_end_ack"
|
|
};
|
|
const char *ieee80211_opmode_name[IEEE80211_OPMODE_MAX] = {
|
|
"IBSS", /* IEEE80211_M_IBSS */
|
|
"STA", /* IEEE80211_M_STA */
|
|
"#2",
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|
"AHDEMO", /* IEEE80211_M_AHDEMO */
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|
"#4", "#5",
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"HOSTAP", /* IEEE80211_M_HOSTAP */
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"#7",
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"MONITOR" /* IEEE80211_M_MONITOR */
|
|
};
|
|
const char *ieee80211_state_name[IEEE80211_S_MAX] = {
|
|
"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",
|
|
"WME_AC_BK",
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|
"WME_AC_VI",
|
|
"WME_AC_VO",
|
|
"WME_UPSD",
|
|
};
|
|
|
|
static int ieee80211_newstate(struct ieee80211com *, enum ieee80211_state, int);
|
|
|
|
void
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|
ieee80211_proto_attach(struct ieee80211com *ic)
|
|
{
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struct ifnet *ifp = ic->ic_ifp;
|
|
|
|
/* XXX room for crypto */
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ifp->if_hdrlen = sizeof(struct ieee80211_qosframe_addr4);
|
|
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ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
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ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
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ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
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ic->ic_bmiss_max = IEEE80211_BMISS_MAX;
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callout_init(&ic->ic_swbmiss, CALLOUT_MPSAFE);
|
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callout_init(&ic->ic_mgtsend, CALLOUT_MPSAFE);
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ic->ic_mcast_rate = IEEE80211_MCAST_RATE_DEFAULT;
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ic->ic_protmode = IEEE80211_PROT_CTSONLY;
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ic->ic_roaming = IEEE80211_ROAMING_AUTO;
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|
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|
ic->ic_wme.wme_hipri_switch_hysteresis =
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AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
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|
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mtx_init(&ic->ic_mgtq.ifq_mtx, ifp->if_xname, "mgmt send q", MTX_DEF);
|
|
|
|
/* 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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ic->ic_raw_xmit = ieee80211_raw_xmit;
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|
}
|
|
|
|
void
|
|
ieee80211_proto_detach(struct ieee80211com *ic)
|
|
{
|
|
|
|
/*
|
|
* This should not be needed as we detach when reseting
|
|
* the state but be conservative here since the
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|
* authenticator may do things like spawn kernel threads.
|
|
*/
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if (ic->ic_auth->ia_detach)
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ic->ic_auth->ia_detach(ic);
|
|
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|
ieee80211_drain_ifq(&ic->ic_mgtq);
|
|
mtx_destroy(&ic->ic_mgtq.ifq_mtx);
|
|
|
|
/*
|
|
* Detach any ACL'ator.
|
|
*/
|
|
if (ic->ic_acl != NULL)
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|
ic->ic_acl->iac_detach(ic);
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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)
|
|
/* 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];
|
|
|
|
static const struct ieee80211_authenticator auth_internal = {
|
|
.ia_name = "wlan_internal",
|
|
.ia_attach = NULL,
|
|
.ia_detach = NULL,
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|
.ia_node_join = NULL,
|
|
.ia_node_leave = NULL,
|
|
};
|
|
|
|
/*
|
|
* Setup internal authenticators once; they are never unregistered.
|
|
*/
|
|
static void
|
|
ieee80211_auth_setup(void)
|
|
{
|
|
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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SYSINIT(wlan_auth, SI_SUB_DRIVERS, SI_ORDER_FIRST, ieee80211_auth_setup, NULL);
|
|
|
|
const struct ieee80211_authenticator *
|
|
ieee80211_authenticator_get(int auth)
|
|
{
|
|
if (auth >= IEEE80211_AUTH_MAX)
|
|
return NULL;
|
|
if (authenticators[auth] == NULL)
|
|
ieee80211_load_module(auth_modnames[auth]);
|
|
return authenticators[auth];
|
|
}
|
|
|
|
void
|
|
ieee80211_authenticator_register(int type,
|
|
const struct ieee80211_authenticator *auth)
|
|
{
|
|
if (type >= IEEE80211_AUTH_MAX)
|
|
return;
|
|
authenticators[type] = auth;
|
|
}
|
|
|
|
void
|
|
ieee80211_authenticator_unregister(int type)
|
|
{
|
|
|
|
if (type >= IEEE80211_AUTH_MAX)
|
|
return;
|
|
authenticators[type] = NULL;
|
|
}
|
|
|
|
/*
|
|
* Very simple-minded ACL module support.
|
|
*/
|
|
/* XXX just one for now */
|
|
static const struct ieee80211_aclator *acl = NULL;
|
|
|
|
void
|
|
ieee80211_aclator_register(const struct ieee80211_aclator *iac)
|
|
{
|
|
printf("wlan: %s acl policy registered\n", iac->iac_name);
|
|
acl = iac;
|
|
}
|
|
|
|
void
|
|
ieee80211_aclator_unregister(const struct ieee80211_aclator *iac)
|
|
{
|
|
if (acl == iac)
|
|
acl = NULL;
|
|
printf("wlan: %s acl policy unregistered\n", iac->iac_name);
|
|
}
|
|
|
|
const struct ieee80211_aclator *
|
|
ieee80211_aclator_get(const char *name)
|
|
{
|
|
if (acl == NULL)
|
|
ieee80211_load_module("wlan_acl");
|
|
return acl != NULL && strcmp(acl->iac_name, name) == 0 ? acl : NULL;
|
|
}
|
|
|
|
void
|
|
ieee80211_print_essid(const uint8_t *essid, int len)
|
|
{
|
|
const uint8_t *p;
|
|
int i;
|
|
|
|
if (len > IEEE80211_NWID_LEN)
|
|
len = IEEE80211_NWID_LEN;
|
|
/* determine printable or not */
|
|
for (i = 0, p = essid; i < len; i++, p++) {
|
|
if (*p < ' ' || *p > 0x7e)
|
|
break;
|
|
}
|
|
if (i == len) {
|
|
printf("\"");
|
|
for (i = 0, p = essid; i < len; i++, p++)
|
|
printf("%c", *p);
|
|
printf("\"");
|
|
} else {
|
|
printf("0x");
|
|
for (i = 0, p = essid; i < len; i++, p++)
|
|
printf("%02x", *p);
|
|
}
|
|
}
|
|
|
|
void
|
|
ieee80211_dump_pkt(struct ieee80211com *ic,
|
|
const uint8_t *buf, int len, int rate, int rssi)
|
|
{
|
|
const struct ieee80211_frame *wh;
|
|
int i;
|
|
|
|
wh = (const struct ieee80211_frame *)buf;
|
|
switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
|
|
case IEEE80211_FC1_DIR_NODS:
|
|
printf("NODS %s", ether_sprintf(wh->i_addr2));
|
|
printf("->%s", ether_sprintf(wh->i_addr1));
|
|
printf("(%s)", ether_sprintf(wh->i_addr3));
|
|
break;
|
|
case IEEE80211_FC1_DIR_TODS:
|
|
printf("TODS %s", ether_sprintf(wh->i_addr2));
|
|
printf("->%s", ether_sprintf(wh->i_addr3));
|
|
printf("(%s)", ether_sprintf(wh->i_addr1));
|
|
break;
|
|
case IEEE80211_FC1_DIR_FROMDS:
|
|
printf("FRDS %s", ether_sprintf(wh->i_addr3));
|
|
printf("->%s", ether_sprintf(wh->i_addr1));
|
|
printf("(%s)", ether_sprintf(wh->i_addr2));
|
|
break;
|
|
case IEEE80211_FC1_DIR_DSTODS:
|
|
printf("DSDS %s", ether_sprintf((const uint8_t *)&wh[1]));
|
|
printf("->%s", ether_sprintf(wh->i_addr3));
|
|
printf("(%s", ether_sprintf(wh->i_addr2));
|
|
printf("->%s)", ether_sprintf(wh->i_addr1));
|
|
break;
|
|
}
|
|
switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
|
|
case IEEE80211_FC0_TYPE_DATA:
|
|
printf(" data");
|
|
break;
|
|
case IEEE80211_FC0_TYPE_MGT:
|
|
printf(" %s", ieee80211_mgt_subtype_name[
|
|
(wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
|
|
>> IEEE80211_FC0_SUBTYPE_SHIFT]);
|
|
break;
|
|
default:
|
|
printf(" type#%d", wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
|
|
break;
|
|
}
|
|
if (IEEE80211_QOS_HAS_SEQ(wh)) {
|
|
const struct ieee80211_qosframe *qwh =
|
|
(const struct ieee80211_qosframe *)buf;
|
|
printf(" QoS [TID %u%s]", qwh->i_qos[0] & IEEE80211_QOS_TID,
|
|
qwh->i_qos[0] & IEEE80211_QOS_ACKPOLICY ? " ACM" : "");
|
|
}
|
|
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
|
|
int off;
|
|
|
|
off = ieee80211_anyhdrspace(ic, wh);
|
|
printf(" WEP [IV %.02x %.02x %.02x",
|
|
buf[off+0], buf[off+1], buf[off+2]);
|
|
if (buf[off+IEEE80211_WEP_IVLEN] & IEEE80211_WEP_EXTIV)
|
|
printf(" %.02x %.02x %.02x",
|
|
buf[off+4], buf[off+5], buf[off+6]);
|
|
printf(" KID %u]", buf[off+IEEE80211_WEP_IVLEN] >> 6);
|
|
}
|
|
if (rate >= 0)
|
|
printf(" %dM", rate / 2);
|
|
if (rssi >= 0)
|
|
printf(" +%d", rssi);
|
|
printf("\n");
|
|
if (len > 0) {
|
|
for (i = 0; i < len; i++) {
|
|
if ((i & 1) == 0)
|
|
printf(" ");
|
|
printf("%02x", buf[i]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
static __inline int
|
|
findrix(const struct ieee80211_rateset *rs, int r)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < rs->rs_nrates; i++)
|
|
if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == r)
|
|
return i;
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
ieee80211_fix_rate(struct ieee80211_node *ni,
|
|
struct ieee80211_rateset *nrs, int flags)
|
|
{
|
|
#define RV(v) ((v) & IEEE80211_RATE_VAL)
|
|
struct ieee80211com *ic = ni->ni_ic;
|
|
int i, j, rix, error;
|
|
int okrate, badrate, fixedrate;
|
|
const struct ieee80211_rateset *srs;
|
|
uint8_t r;
|
|
|
|
error = 0;
|
|
okrate = badrate = 0;
|
|
fixedrate = IEEE80211_FIXED_RATE_NONE;
|
|
srs = ieee80211_get_suprates(ic, ni->ni_chan);
|
|
for (i = 0; i < nrs->rs_nrates; ) {
|
|
if (flags & IEEE80211_F_DOSORT) {
|
|
/*
|
|
* Sort rates.
|
|
*/
|
|
for (j = i + 1; j < nrs->rs_nrates; j++) {
|
|
if (RV(nrs->rs_rates[i]) > RV(nrs->rs_rates[j])) {
|
|
r = nrs->rs_rates[i];
|
|
nrs->rs_rates[i] = nrs->rs_rates[j];
|
|
nrs->rs_rates[j] = r;
|
|
}
|
|
}
|
|
}
|
|
r = nrs->rs_rates[i] & IEEE80211_RATE_VAL;
|
|
badrate = r;
|
|
/*
|
|
* Check for fixed rate.
|
|
*/
|
|
if (r == ic->ic_fixed_rate)
|
|
fixedrate = r;
|
|
/*
|
|
* Check against supported rates.
|
|
*/
|
|
rix = findrix(srs, r);
|
|
if (flags & IEEE80211_F_DONEGO) {
|
|
if (rix < 0) {
|
|
/*
|
|
* A rate in the node's rate set is not
|
|
* supported. If this is a basic rate and we
|
|
* are operating as a STA then this is an error.
|
|
* Otherwise we just discard/ignore the rate.
|
|
*/
|
|
if ((flags & IEEE80211_F_JOIN) &&
|
|
(nrs->rs_rates[i] & IEEE80211_RATE_BASIC))
|
|
error++;
|
|
} else if ((flags & IEEE80211_F_JOIN) == 0) {
|
|
/*
|
|
* Overwrite with the supported rate
|
|
* value so any basic rate bit is set.
|
|
*/
|
|
nrs->rs_rates[i] = srs->rs_rates[rix];
|
|
}
|
|
}
|
|
if ((flags & IEEE80211_F_DODEL) && rix < 0) {
|
|
/*
|
|
* Delete unacceptable rates.
|
|
*/
|
|
nrs->rs_nrates--;
|
|
for (j = i; j < nrs->rs_nrates; j++)
|
|
nrs->rs_rates[j] = nrs->rs_rates[j + 1];
|
|
nrs->rs_rates[j] = 0;
|
|
continue;
|
|
}
|
|
if (rix >= 0)
|
|
okrate = nrs->rs_rates[i];
|
|
i++;
|
|
}
|
|
if (okrate == 0 || error != 0 ||
|
|
((flags & IEEE80211_F_DOFRATE) && fixedrate != ic->ic_fixed_rate))
|
|
return badrate | IEEE80211_RATE_BASIC;
|
|
else
|
|
return RV(okrate);
|
|
#undef RV
|
|
}
|
|
|
|
/*
|
|
* Reset 11g-related state.
|
|
*/
|
|
void
|
|
ieee80211_reset_erp(struct ieee80211com *ic)
|
|
{
|
|
ic->ic_flags &= ~IEEE80211_F_USEPROT;
|
|
ic->ic_nonerpsta = 0;
|
|
ic->ic_longslotsta = 0;
|
|
/*
|
|
* Short slot time is enabled only when operating in 11g
|
|
* and not in an IBSS. We must also honor whether or not
|
|
* the driver is capable of doing it.
|
|
*/
|
|
ieee80211_set_shortslottime(ic,
|
|
IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
|
|
IEEE80211_IS_CHAN_HT(ic->ic_curchan) ||
|
|
(IEEE80211_IS_CHAN_ANYG(ic->ic_curchan) &&
|
|
ic->ic_opmode == IEEE80211_M_HOSTAP &&
|
|
(ic->ic_caps & IEEE80211_C_SHSLOT)));
|
|
/*
|
|
* Set short preamble and ERP barker-preamble flags.
|
|
*/
|
|
if (IEEE80211_IS_CHAN_A(ic->ic_curchan) ||
|
|
(ic->ic_caps & IEEE80211_C_SHPREAMBLE)) {
|
|
ic->ic_flags |= IEEE80211_F_SHPREAMBLE;
|
|
ic->ic_flags &= ~IEEE80211_F_USEBARKER;
|
|
} else {
|
|
ic->ic_flags &= ~IEEE80211_F_SHPREAMBLE;
|
|
ic->ic_flags |= IEEE80211_F_USEBARKER;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Set the short slot time state and notify the driver.
|
|
*/
|
|
void
|
|
ieee80211_set_shortslottime(struct ieee80211com *ic, int onoff)
|
|
{
|
|
if (onoff)
|
|
ic->ic_flags |= IEEE80211_F_SHSLOT;
|
|
else
|
|
ic->ic_flags &= ~IEEE80211_F_SHSLOT;
|
|
/* notify driver */
|
|
if (ic->ic_updateslot != NULL)
|
|
ic->ic_updateslot(ic->ic_ifp);
|
|
}
|
|
|
|
/*
|
|
* Check if the specified rate set supports ERP.
|
|
* NB: the rate set is assumed to be sorted.
|
|
*/
|
|
int
|
|
ieee80211_iserp_rateset(struct ieee80211com *ic, struct ieee80211_rateset *rs)
|
|
{
|
|
#define N(a) (sizeof(a) / sizeof(a[0]))
|
|
static const int rates[] = { 2, 4, 11, 22, 12, 24, 48 };
|
|
int i, j;
|
|
|
|
if (rs->rs_nrates < N(rates))
|
|
return 0;
|
|
for (i = 0; i < N(rates); i++) {
|
|
for (j = 0; j < rs->rs_nrates; j++) {
|
|
int r = rs->rs_rates[j] & IEEE80211_RATE_VAL;
|
|
if (rates[i] == r)
|
|
goto next;
|
|
if (r > rates[i])
|
|
return 0;
|
|
}
|
|
return 0;
|
|
next:
|
|
;
|
|
}
|
|
return 1;
|
|
#undef N
|
|
}
|
|
|
|
/*
|
|
* Mark the basic rates for the 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[IEEE80211_MODE_MAX] = {
|
|
{ .rs_nrates = 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) */
|
|
{ .rs_nrates = 0 }, /* IEEE80211_MODE_FH */
|
|
/* IEEE80211_MODE_PUREG (not yet) */
|
|
{ 7, { 2, 4, 11, 22, 12, 24, 48 } },
|
|
{ 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11NA */
|
|
/* IEEE80211_MODE_11NG (mixed b/g) */
|
|
{ 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 {
|
|
uint8_t aifsn;
|
|
uint8_t logcwmin;
|
|
uint8_t logcwmax;
|
|
uint16_t txopLimit;
|
|
uint8_t acm;
|
|
} paramType;
|
|
|
|
static const struct phyParamType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
|
|
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 3, 5, 7, 0, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 3, 5, 7, 0, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 2, 3, 5, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11NA */ /* XXXcheck*/
|
|
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11NG */ /* XXXcheck*/
|
|
};
|
|
static const struct phyParamType phyParamForAC_BK[IEEE80211_MODE_MAX] = {
|
|
{ 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 7, 5, 10, 0, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 7, 5, 10, 0, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 7, 3, 10, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NA */
|
|
{ 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NG */
|
|
};
|
|
static const struct phyParamType phyParamForAC_VI[IEEE80211_MODE_MAX] = {
|
|
{ 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 1, 4, 5, 188, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 1, 4, 5, 188, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 1, 2, 3, 94, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NA */
|
|
{ 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NG */
|
|
};
|
|
static const struct phyParamType phyParamForAC_VO[IEEE80211_MODE_MAX] = {
|
|
{ 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 1, 3, 4, 102, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 1, 3, 4, 102, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NA */
|
|
{ 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NG */
|
|
};
|
|
|
|
static const struct phyParamType bssPhyParamForAC_BE[IEEE80211_MODE_MAX] = {
|
|
{ 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 3, 5, 10, 0, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 3, 5, 10, 0, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 2, 3, 10, 0, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 1, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NA */
|
|
{ 1, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NG */
|
|
};
|
|
static const struct phyParamType bssPhyParamForAC_VI[IEEE80211_MODE_MAX] = {
|
|
{ 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 2, 4, 5, 188, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 2, 4, 5, 188, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 2, 2, 3, 94, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NA */
|
|
{ 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11NG */
|
|
};
|
|
static const struct phyParamType bssPhyParamForAC_VO[IEEE80211_MODE_MAX] = {
|
|
{ 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 2, 3, 4, 102, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 2, 3, 4, 102, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 1, 2, 2, 47, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NA */
|
|
{ 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11NG */
|
|
};
|
|
|
|
void
|
|
ieee80211_wme_initparams(struct ieee80211com *ic)
|
|
{
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
const paramType *pPhyParam, *pBssPhyParam;
|
|
struct wmeParams *wmep;
|
|
enum ieee80211_phymode mode;
|
|
int i;
|
|
|
|
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;
|
|
}
|
|
|
|
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, 0 }, /* IEEE80211_MODE_AUTO */
|
|
{ 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11A */
|
|
{ 2, 5, 10, 64, 0 }, /* IEEE80211_MODE_11B */
|
|
{ 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11G */
|
|
{ 2, 5, 10, 64, 0 }, /* IEEE80211_MODE_FH */
|
|
{ 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_TURBO_A */
|
|
{ 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_TURBO_G */
|
|
{ 1, 3, 10, 64, 0 }, /* IEEE80211_MODE_STURBO_A */
|
|
{ 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11NA */ /*XXXcheck*/
|
|
{ 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11NG */ /*XXXcheck*/
|
|
};
|
|
struct ieee80211_wme_state *wme = &ic->ic_wme;
|
|
const struct wmeParams *wmep;
|
|
struct wmeParams *chanp, *bssp;
|
|
enum ieee80211_phymode mode;
|
|
int i;
|
|
|
|
/* set up the channel access parameters for the physical device */
|
|
for (i = 0; i < WME_NUM_AC; i++) {
|
|
chanp = &wme->wme_chanParams.cap_wmeParams[i];
|
|
wmep = &wme->wme_wmeChanParams.cap_wmeParams[i];
|
|
chanp->wmep_aifsn = wmep->wmep_aifsn;
|
|
chanp->wmep_logcwmin = wmep->wmep_logcwmin;
|
|
chanp->wmep_logcwmax = wmep->wmep_logcwmax;
|
|
chanp->wmep_txopLimit = wmep->wmep_txopLimit;
|
|
|
|
chanp = &wme->wme_bssChanParams.cap_wmeParams[i];
|
|
wmep = &wme->wme_wmeBssChanParams.cap_wmeParams[i];
|
|
chanp->wmep_aifsn = wmep->wmep_aifsn;
|
|
chanp->wmep_logcwmin = wmep->wmep_logcwmin;
|
|
chanp->wmep_logcwmax = wmep->wmep_logcwmax;
|
|
chanp->wmep_txopLimit = wmep->wmep_txopLimit;
|
|
}
|
|
|
|
/*
|
|
* Select mode; we can be called early in which case we
|
|
* always use auto mode. We know we'll be called when
|
|
* entering the RUN state with bsschan setup properly
|
|
* so state will eventually get set correctly
|
|
*/
|
|
if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
|
|
mode = ieee80211_chan2mode(ic->ic_bsschan);
|
|
else
|
|
mode = IEEE80211_MODE_AUTO;
|
|
|
|
/*
|
|
* This implements agressive mode as found in certain
|
|
* vendors' AP's. When there is significant high
|
|
* priority (VI/VO) traffic in the BSS throttle back BE
|
|
* traffic by using conservative parameters. Otherwise
|
|
* BE uses agressive params to optimize performance of
|
|
* legacy/non-QoS traffic.
|
|
*/
|
|
if ((ic->ic_opmode == IEEE80211_M_HOSTAP &&
|
|
(wme->wme_flags & WME_F_AGGRMODE) != 0) ||
|
|
(ic->ic_opmode == IEEE80211_M_STA &&
|
|
(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[mode].aifsn;
|
|
chanp->wmep_logcwmin = bssp->wmep_logcwmin =
|
|
phyParam[mode].logcwmin;
|
|
chanp->wmep_logcwmax = bssp->wmep_logcwmax =
|
|
phyParam[mode].logcwmax;
|
|
chanp->wmep_txopLimit = bssp->wmep_txopLimit =
|
|
(ic->ic_flags & IEEE80211_F_BURST) ?
|
|
phyParam[mode].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 uint8_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 */
|
|
3, /* IEEE80211_MODE_STURBO_A */
|
|
3, /* IEEE80211_MODE_11NA */
|
|
3, /* IEEE80211_MODE_11NG */
|
|
};
|
|
chanp = &wme->wme_chanParams.cap_wmeParams[WME_AC_BE];
|
|
bssp = &wme->wme_bssChanParams.cap_wmeParams[WME_AC_BE];
|
|
|
|
chanp->wmep_logcwmin = bssp->wmep_logcwmin = logCwMin[mode];
|
|
IEEE80211_DPRINTF(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);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Start a device. If this is the first vap running on the
|
|
* underlying device then we first bring it up.
|
|
*/
|
|
int
|
|
ieee80211_init(struct ieee80211com *ic, int forcescan)
|
|
{
|
|
|
|
IEEE80211_DPRINTF(ic,
|
|
IEEE80211_MSG_STATE | IEEE80211_MSG_DEBUG,
|
|
"%s\n", "start running");
|
|
|
|
/*
|
|
* Kick the 802.11 state machine as appropriate.
|
|
*/
|
|
if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) {
|
|
if (ic->ic_opmode == IEEE80211_M_STA) {
|
|
/*
|
|
* 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 (ic->ic_state != IEEE80211_S_RUN || forcescan)
|
|
ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
|
|
else
|
|
ieee80211_new_state(ic, IEEE80211_S_ASSOC, 1);
|
|
} else {
|
|
/*
|
|
* 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 (ic->ic_opmode == IEEE80211_M_MONITOR ||
|
|
ic->ic_opmode == IEEE80211_M_WDS) {
|
|
ic->ic_state = IEEE80211_S_INIT; /* XXX*/
|
|
ieee80211_new_state(ic, IEEE80211_S_RUN, -1);
|
|
} else
|
|
ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
struct ieee80211_channel *chan;
|
|
|
|
chan = ieee80211_find_channel(ic, ic->ic_bsschan->ic_freq, newflags);
|
|
if (chan == NULL) { /* XXX should not happen */
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_SUPERG,
|
|
"%s: no channel with freq %u flags 0x%x\n",
|
|
__func__, ic->ic_bsschan->ic_freq, newflags);
|
|
return;
|
|
}
|
|
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_SUPERG,
|
|
"%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_prevchan = ic->ic_curchan;
|
|
ic->ic_curchan = chan;
|
|
ic->ic_set_channel(ic);
|
|
/* NB: do not need to reset ERP state 'cuz we're in sta mode */
|
|
}
|
|
|
|
void
|
|
ieee80211_beacon_miss(struct ieee80211com *ic)
|
|
{
|
|
|
|
if (ic->ic_flags & IEEE80211_F_SCAN) {
|
|
/* XXX check ic_curchan != ic_bsschan? */
|
|
return;
|
|
}
|
|
IEEE80211_DPRINTF(ic, 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 (ic->ic_opmode != IEEE80211_M_STA || ic->ic_state != IEEE80211_S_RUN)
|
|
return;
|
|
|
|
if (++ic->ic_bmiss_count < ic->ic_bmiss_max) {
|
|
/*
|
|
* Send a directed probe req before falling back to a scan;
|
|
* if we receive a response ic_bmiss_count will be reset.
|
|
* Some cards mistakenly report beacon miss so this avoids
|
|
* the expensive scan if the ap is still there.
|
|
*/
|
|
ieee80211_send_probereq(ic->ic_bss, ic->ic_myaddr,
|
|
ic->ic_bss->ni_bssid, ic->ic_bss->ni_bssid,
|
|
ic->ic_bss->ni_essid, ic->ic_bss->ni_esslen,
|
|
ic->ic_opt_ie, ic->ic_opt_ie_len);
|
|
return;
|
|
}
|
|
ic->ic_bmiss_count = 0;
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO) {
|
|
/*
|
|
* If we receive a beacon miss interrupt when using
|
|
* dynamic turbo, attempt to switch modes before
|
|
* reassociating.
|
|
*/
|
|
if (IEEE80211_ATH_CAP(ic, ic->ic_bss, IEEE80211_NODE_TURBOP))
|
|
ieee80211_dturbo_switch(ic,
|
|
ic->ic_bsschan->ic_flags ^ IEEE80211_CHAN_TURBO);
|
|
/*
|
|
* Try to reassociate before scanning for a new ap.
|
|
*/
|
|
ieee80211_new_state(ic, 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(ic, IEEE80211_S_SCAN, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Software beacon miss handling. Check if any beacons
|
|
* were received in the last period. If not post a
|
|
* beacon miss; otherwise reset the counter.
|
|
*/
|
|
static void
|
|
ieee80211_swbmiss(void *arg)
|
|
{
|
|
struct ieee80211com *ic = arg;
|
|
|
|
if (ic->ic_swbmiss_count == 0) {
|
|
ieee80211_beacon_miss(ic);
|
|
if (ic->ic_bmiss_count == 0) /* don't re-arm timer */
|
|
return;
|
|
} else
|
|
ic->ic_swbmiss_count = 0;
|
|
callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
|
|
ieee80211_swbmiss, ic);
|
|
}
|
|
|
|
static void
|
|
sta_disassoc(void *arg, struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211com *ic = arg;
|
|
|
|
if (ni->ni_associd != 0) {
|
|
IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DISASSOC,
|
|
IEEE80211_REASON_ASSOC_LEAVE);
|
|
ieee80211_node_leave(ic, ni);
|
|
}
|
|
}
|
|
|
|
static void
|
|
sta_deauth(void *arg, struct ieee80211_node *ni)
|
|
{
|
|
struct ieee80211com *ic = arg;
|
|
|
|
IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_DEAUTH,
|
|
IEEE80211_REASON_ASSOC_LEAVE);
|
|
}
|
|
|
|
/*
|
|
* Handle deauth with reason. We retry only for
|
|
* the cases where we might succeed. Otherwise
|
|
* we downgrade the ap and scan.
|
|
*/
|
|
static void
|
|
sta_authretry(struct ieee80211com *ic, struct ieee80211_node *ni, int reason)
|
|
{
|
|
switch (reason) {
|
|
case IEEE80211_STATUS_TIMEOUT:
|
|
case IEEE80211_REASON_ASSOC_EXPIRE:
|
|
case IEEE80211_REASON_NOT_AUTHED:
|
|
case IEEE80211_REASON_NOT_ASSOCED:
|
|
case IEEE80211_REASON_ASSOC_LEAVE:
|
|
case IEEE80211_REASON_ASSOC_NOT_AUTHED:
|
|
IEEE80211_SEND_MGMT(ic, ni, IEEE80211_FC0_SUBTYPE_AUTH, 1);
|
|
break;
|
|
default:
|
|
ieee80211_scan_assoc_fail(ic, ic->ic_bss->ni_macaddr, reason);
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
|
|
ieee80211_check_scan(ic,
|
|
IEEE80211_SCAN_ACTIVE,
|
|
IEEE80211_SCAN_FOREVER,
|
|
ic->ic_des_nssid, ic->ic_des_ssid);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
ieee80211_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
|
|
{
|
|
struct ifnet *ifp = ic->ic_ifp;
|
|
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 */
|
|
callout_stop(&ic->ic_mgtsend); /* XXX callout_drain */
|
|
if (ostate != IEEE80211_S_SCAN)
|
|
ieee80211_cancel_scan(ic); /* background scan */
|
|
ni = ic->ic_bss; /* NB: no reference held */
|
|
if (ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)
|
|
callout_stop(&ic->ic_swbmiss);
|
|
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:
|
|
ieee80211_iterate_nodes(&ic->ic_sta,
|
|
sta_disassoc, ic);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
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:
|
|
ieee80211_iterate_nodes(&ic->ic_sta,
|
|
sta_deauth, ic);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
ieee80211_cancel_scan(ic);
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
break;
|
|
}
|
|
if (ostate != IEEE80211_S_INIT) {
|
|
/* NB: optimize INIT -> INIT case */
|
|
ieee80211_drain_ifq(&ic->ic_mgtq);
|
|
ieee80211_reset_bss(ic);
|
|
ieee80211_scan_flush(ic);
|
|
}
|
|
if (ic->ic_auth->ia_detach != NULL)
|
|
ic->ic_auth->ia_detach(ic);
|
|
break;
|
|
case IEEE80211_S_SCAN:
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
createibss:
|
|
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) {
|
|
/*
|
|
* Already have a channel; bypass the
|
|
* scan and startup immediately. Because
|
|
* of this explicitly sync the scanner state.
|
|
*/
|
|
ieee80211_scan_update(ic);
|
|
ieee80211_create_ibss(ic, ic->ic_des_chan);
|
|
} else {
|
|
ieee80211_check_scan(ic,
|
|
IEEE80211_SCAN_ACTIVE |
|
|
IEEE80211_SCAN_FLUSH,
|
|
IEEE80211_SCAN_FOREVER,
|
|
ic->ic_des_nssid, ic->ic_des_ssid);
|
|
}
|
|
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,
|
|
ic->ic_bss->ni_macaddr, arg);
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
|
|
ieee80211_check_scan(ic,
|
|
IEEE80211_SCAN_ACTIVE,
|
|
IEEE80211_SCAN_FOREVER,
|
|
ic->ic_des_nssid, ic->ic_des_ssid);
|
|
break;
|
|
case IEEE80211_S_RUN: /* beacon miss */
|
|
if (ic->ic_opmode == IEEE80211_M_STA) {
|
|
ieee80211_sta_leave(ic, ni);
|
|
ic->ic_flags &= ~IEEE80211_F_SIBSS; /* XXX */
|
|
if (ic->ic_roaming == IEEE80211_ROAMING_AUTO)
|
|
ieee80211_check_scan(ic,
|
|
IEEE80211_SCAN_ACTIVE,
|
|
IEEE80211_SCAN_FOREVER,
|
|
ic->ic_des_nssid,
|
|
ic->ic_des_ssid);
|
|
} else {
|
|
ieee80211_iterate_nodes(&ic->ic_sta,
|
|
sta_disassoc, ic);
|
|
goto createibss;
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
KASSERT(ic->ic_opmode == IEEE80211_M_STA,
|
|
("switch to %s state when operating in mode %u",
|
|
ieee80211_state_name[nstate], ic->ic_opmode));
|
|
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 & 0xff) {
|
|
case IEEE80211_FC0_SUBTYPE_AUTH:
|
|
/* ??? */
|
|
IEEE80211_SEND_MGMT(ic, ni,
|
|
IEEE80211_FC0_SUBTYPE_AUTH, 2);
|
|
break;
|
|
case IEEE80211_FC0_SUBTYPE_DEAUTH:
|
|
sta_authretry(ic, ni, arg>>8);
|
|
break;
|
|
}
|
|
break;
|
|
case IEEE80211_S_RUN:
|
|
switch (arg & 0xff) {
|
|
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:
|
|
KASSERT(ic->ic_opmode == IEEE80211_M_STA,
|
|
("switch to %s state when operating in mode %u",
|
|
ieee80211_state_name[nstate], ic->ic_opmode));
|
|
switch (ostate) {
|
|
case IEEE80211_S_INIT:
|
|
case IEEE80211_S_SCAN:
|
|
IEEE80211_DPRINTF(ic, IEEE80211_MSG_ANY,
|
|
"%s: invalid transition\n", __func__);
|
|
break;
|
|
case IEEE80211_S_AUTH:
|
|
case IEEE80211_S_ASSOC:
|
|
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, arg ?
|
|
IEEE80211_FC0_SUBTYPE_REASSOC_REQ :
|
|
IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
|
|
}
|
|
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 ||
|
|
ic->ic_opmode == IEEE80211_M_WDS ||
|
|
ic->ic_opmode == IEEE80211_M_HOSTAP) {
|
|
/*
|
|
* Already have a channel; bypass the
|
|
* scan and startup immediately. Because
|
|
* of this explicitly sync the scanner state.
|
|
*/
|
|
ieee80211_scan_update(ic);
|
|
ieee80211_create_ibss(ic, ic->ic_curchan);
|
|
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, ic->ic_curchan),
|
|
IEEE80211_RATE2MBS(ni->ni_rates.rs_rates[ni->ni_txrate]));
|
|
}
|
|
#endif
|
|
if (ic->ic_opmode == IEEE80211_M_STA) {
|
|
ieee80211_scan_assoc_success(ic,
|
|
ni->ni_macaddr);
|
|
ieee80211_notify_node_join(ic, ni,
|
|
arg == IEEE80211_FC0_SUBTYPE_ASSOC_RESP);
|
|
}
|
|
if_start(ifp); /* XXX not authorized yet */
|
|
break;
|
|
}
|
|
if (ostate != IEEE80211_S_RUN &&
|
|
ic->ic_opmode == IEEE80211_M_STA &&
|
|
(ic->ic_flags_ext & IEEE80211_FEXT_SWBMISS)) {
|
|
/*
|
|
* Start s/w beacon miss timer for devices w/o
|
|
* hardware support. We fudge a bit here since
|
|
* we're doing this in software.
|
|
*/
|
|
ic->ic_swbmiss_period = IEEE80211_TU_TO_TICKS(
|
|
2 * ic->ic_bmissthreshold * ni->ni_intval);
|
|
ic->ic_swbmiss_count = 0;
|
|
callout_reset(&ic->ic_swbmiss, ic->ic_swbmiss_period,
|
|
ieee80211_swbmiss, ic);
|
|
}
|
|
/*
|
|
* 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(ni);
|
|
/*
|
|
* Enable inactivity processing.
|
|
* XXX
|
|
*/
|
|
callout_reset(&ic->ic_inact, IEEE80211_INACT_WAIT*hz,
|
|
ieee80211_node_timeout, ic);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|