/*
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Copyright (c) 2001 Atsushi Onoe
* Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
* All rights reserved.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* 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.
*/
/*
* IEEE 802.11 protocol support
*/
#include "net80211_impl.h"
/* 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_state_name[IEEE80211_S_MAX] = {
"INIT", /* IEEE80211_S_INIT */
"SCAN", /* IEEE80211_S_SCAN */
"AUTH", /* IEEE80211_S_AUTH */
"ASSOC", /* IEEE80211_S_ASSOC */
"RUN" /* IEEE80211_S_RUN */
};
const char *ieee80211_wme_acnames[] = {
"WME_AC_BE",
"WME_AC_BK",
"WME_AC_VI",
"WME_AC_VO",
"WME_UPSD",
};
static int ieee80211_newstate(ieee80211com_t *, enum ieee80211_state, int);
/*
* Initialize the interface softc, ic, with protocol management
* related data structures and functions.
*/
void
ieee80211_proto_attach(ieee80211com_t *ic)
{
struct ieee80211_impl *im = ic->ic_private;
ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
ic->ic_protmode = IEEE80211_PROT_CTSONLY;
im->im_bmiss_max = IEEE80211_BMISS_MAX;
ic->ic_wme.wme_hipri_switch_hysteresis =
AGGRESSIVE_MODE_SWITCH_HYSTERESIS;
/* protocol state change handler */
ic->ic_newstate = ieee80211_newstate;
/* initialize management frame handlers */
ic->ic_recv_mgmt = ieee80211_recv_mgmt;
ic->ic_send_mgmt = ieee80211_send_mgmt;
}
/*
* Print a 802.11 frame header
*/
void
ieee80211_dump_pkt(const uint8_t *buf, int32_t len, int32_t rate, int32_t rssi)
{
struct ieee80211_frame *wh;
int8_t buf1[100];
int8_t buf2[25];
int i;
bzero(buf1, sizeof (buf1));
bzero(buf2, sizeof (buf2));
wh = (struct ieee80211_frame *)buf;
switch (wh->i_fc[1] & IEEE80211_FC1_DIR_MASK) {
case IEEE80211_FC1_DIR_NODS:
(void) snprintf(buf2, sizeof (buf2), "NODS %s",
ieee80211_macaddr_sprintf(wh->i_addr2));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "->%s",
ieee80211_macaddr_sprintf(wh->i_addr1));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "(%s)",
ieee80211_macaddr_sprintf(wh->i_addr3));
(void) strncat(buf1, buf2, sizeof (buf2));
break;
case IEEE80211_FC1_DIR_TODS:
(void) snprintf(buf2, sizeof (buf2), "TODS %s",
ieee80211_macaddr_sprintf(wh->i_addr2));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "->%s",
ieee80211_macaddr_sprintf(wh->i_addr3));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "(%s)",
ieee80211_macaddr_sprintf(wh->i_addr1));
(void) strncat(buf1, buf2, sizeof (buf2));
break;
case IEEE80211_FC1_DIR_FROMDS:
(void) snprintf(buf2, sizeof (buf2), "FRDS %s",
ieee80211_macaddr_sprintf(wh->i_addr3));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "->%s",
ieee80211_macaddr_sprintf(wh->i_addr1));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "(%s)",
ieee80211_macaddr_sprintf(wh->i_addr2));
(void) strncat(buf1, buf2, sizeof (buf2));
break;
case IEEE80211_FC1_DIR_DSTODS:
(void) snprintf(buf2, sizeof (buf2), "DSDS %s",
ieee80211_macaddr_sprintf((uint8_t *)&wh[1]));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "->%s ",
ieee80211_macaddr_sprintf(wh->i_addr3));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "%s",
ieee80211_macaddr_sprintf(wh->i_addr2));
(void) strncat(buf1, buf2, sizeof (buf2));
(void) snprintf(buf2, sizeof (buf2), "->%s",
ieee80211_macaddr_sprintf(wh->i_addr1));
(void) strncat(buf1, buf2, sizeof (buf2));
break;
}
ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_dump_pkt(): %s", buf1);
bzero(buf1, sizeof (buf1));
switch (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) {
case IEEE80211_FC0_TYPE_DATA:
(void) sprintf(buf2, "data");
break;
case IEEE80211_FC0_TYPE_MGT:
(void) snprintf(buf2, sizeof (buf2), "%s",
ieee80211_mgt_subtype_name[
(wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK)
>> IEEE80211_FC0_SUBTYPE_SHIFT]);
break;
default:
(void) snprintf(buf2, sizeof (buf2), "type#%d",
wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK);
break;
}
(void) strncat(buf1, buf2, sizeof (buf2));
if (wh->i_fc[1] & IEEE80211_FC1_WEP) {
(void) sprintf(buf2, " WEP");
(void) strcat(buf1, buf2);
}
if (rate >= 0) {
(void) snprintf(buf2, sizeof (buf2), " %dM", rate / 2);
(void) strncat(buf1, buf2, sizeof (buf2));
}
if (rssi >= 0) {
(void) snprintf(buf2, sizeof (buf2), " +%d", rssi);
(void) strncat(buf1, buf2, sizeof (buf2));
}
ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_dump_pkt(): %s", buf1);
bzero(buf1, sizeof (buf1));
if (len > 0) {
for (i = 0; i < (len > 40 ? 40 : len); i++) {
if ((i & 0x03) == 0)
(void) strcat(buf1, " ");
(void) snprintf(buf2, 3, "%02x", buf[i]);
(void) strncat(buf1, buf2, 3);
}
ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_dump_pkt(): %s",
buf1);
}
}
/*
* Adjust/Fix the specified node's rate table
*
* in node
* flag IEEE80211_F_DOSORT : sort the node's rate table
* IEEE80211_F_DONEGO : mark a rate as basic rate if it is
* a device's basic rate
* IEEE80211_F_DODEL : delete rates not supported by the device
* IEEE80211_F_DOFRATE: check if the fixed rate is supported by
* the device
*
* The highest bit of returned rate value is set to 1 on failure.
*/
int
ieee80211_fix_rate(ieee80211_node_t *in,
struct ieee80211_rateset *nrs, int flags)
{
ieee80211com_t *ic = in->in_ic;
struct ieee80211_rateset *srs;
boolean_t ignore;
int i;
int okrate;
int badrate;
int fixedrate;
uint8_t r;
/*
* If the fixed rate check was requested but no
* fixed has been defined then just remove it.
*/
if ((flags & IEEE80211_F_DOFRATE) &&
(ic->ic_fixed_rate == IEEE80211_FIXED_RATE_NONE)) {
flags &= ~IEEE80211_F_DOFRATE;
}
if (in->in_chan == IEEE80211_CHAN_ANYC) {
return (IEEE80211_RATE_BASIC);
}
okrate = badrate = fixedrate = 0;
srs = &ic->ic_sup_rates[ieee80211_chan2mode(ic, in->in_chan)];
for (i = 0; i < nrs->ir_nrates; ) {
int j;
ignore = B_FALSE;
if (flags & IEEE80211_F_DOSORT) {
/*
* Sort rates.
*/
for (j = i + 1; j < nrs->ir_nrates; j++) {
if (IEEE80211_RV(nrs->ir_rates[i]) >
IEEE80211_RV(nrs->ir_rates[j])) {
r = nrs->ir_rates[i];
nrs->ir_rates[i] = nrs->ir_rates[j];
nrs->ir_rates[j] = r;
}
}
}
r = IEEE80211_RV(nrs->ir_rates[i]);
badrate = r;
/*
* Check against supported rates.
*/
for (j = 0; j < srs->ir_nrates; j++) {
if (r == IEEE80211_RV(srs->ir_rates[j])) {
/*
* Overwrite with the supported rate
* value so any basic rate bit is set.
* This insures that response we send
* to stations have the necessary basic
* rate bit set.
*/
if (flags & IEEE80211_F_DONEGO)
nrs->ir_rates[i] = srs->ir_rates[j];
break;
}
}
if (j == srs->ir_nrates) {
/*
* A rate in the node's rate set is not
* supported. We just discard/ignore the rate.
* Note that this is important for 11b stations
* when they want to associate with an 11g AP.
*/
ignore = B_TRUE;
}
if (flags & IEEE80211_F_DODEL) {
/*
* Delete unacceptable rates.
*/
if (ignore) {
nrs->ir_nrates--;
for (j = i; j < nrs->ir_nrates; j++)
nrs->ir_rates[j] = nrs->ir_rates[j + 1];
nrs->ir_rates[j] = 0;
continue;
}
}
if (flags & IEEE80211_F_DOFRATE) {
/*
* Check any fixed rate is included.
*/
if (r == ic->ic_fixed_rate)
fixedrate = r;
}
if (!ignore)
okrate = nrs->ir_rates[i];
i++;
}
if (okrate == 0 || ((flags & IEEE80211_F_DOFRATE) && fixedrate == 0))
return (badrate | IEEE80211_RATE_BASIC);
else
return (IEEE80211_RV(okrate));
}
/*
* Reset 11g-related state.
*/
void
ieee80211_reset_erp(ieee80211com_t *ic)
{
ic->ic_flags &= ~IEEE80211_F_USEPROT;
/*
* 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,
ic->ic_curmode == IEEE80211_MODE_11A);
/*
* Set short preamble and ERP barker-preamble flags.
*/
if (ic->ic_curmode == IEEE80211_MODE_11A ||
(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;
}
}
/*
* Change current channel to be the next available channel
*/
void
ieee80211_reset_chan(ieee80211com_t *ic)
{
struct ieee80211_channel *ch = ic->ic_curchan;
IEEE80211_LOCK(ic);
do {
if (++ch > &ic->ic_sup_channels[IEEE80211_CHAN_MAX])
ch = &ic->ic_sup_channels[0];
if (ieee80211_isset(ic->ic_chan_active,
ieee80211_chan2ieee(ic, ch))) {
break;
}
} while (ch != ic->ic_curchan);
ic->ic_curchan = ch;
IEEE80211_UNLOCK(ic);
}
/*
* Set the short slot time state and notify the driver.
*/
void
ieee80211_set_shortslottime(ieee80211com_t *ic, boolean_t on)
{
if (on)
ic->ic_flags |= IEEE80211_F_SHSLOT;
else
ic->ic_flags &= ~IEEE80211_F_SHSLOT;
/* notify driver */
if (ic->ic_set_shortslot != NULL)
ic->ic_set_shortslot(ic, on);
}
/*
* 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_setbasicrates(struct ieee80211_rateset *rs,
enum ieee80211_phymode mode)
{
static const struct ieee80211_rateset basic[] = {
{ 0 }, /* IEEE80211_MODE_AUTO */
{ 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11A */
{ 2, { 2, 4} }, /* IEEE80211_MODE_11B */
{ 4, { 2, 4, 11, 22 } }, /* IEEE80211_MODE_11G mixed b/g */
{ 0 }, /* IEEE80211_MODE_FH */
{ 3, { 12, 24, 48 } }, /* IEEE80211_MODE_TURBO_A */
{ 4, { 2, 4, 11, 22 } },
/* IEEE80211_MODE_TURBO_G (mixed b/g) */
{ 0 }, /* IEEE80211_MODE_STURBO_A */
{ 3, { 12, 24, 48 } }, /* IEEE80211_MODE_11NA */
/* IEEE80211_MODE_11NG (mixed b/g) */
{ 7, { 2, 4, 11, 22, 12, 24, 48 } }
};
int i, j;
ASSERT(mode < IEEE80211_MODE_MAX);
for (i = 0; i < rs->ir_nrates; i++) {
rs->ir_rates[i] &= IEEE80211_RATE_VAL;
for (j = 0; j < basic[mode].ir_nrates; j++) {
if (basic[mode].ir_rates[j] == rs->ir_rates[i]) {
rs->ir_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 paramType phyParamForAC_BE[IEEE80211_MODE_MAX] = {
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_AUTO */
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11A */
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11B */
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_11G */
{ 3, 4, 6, 0, 0 }, /* IEEE80211_MODE_FH */
{ 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 */
{ 3, 4, 6, 0, 0 } /* IEEE80211_MODE_11NG */
};
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, 4, 10, 0, 0 }, /* IEEE80211_MODE_11B */
{ 7, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
{ 7, 4, 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, 3, 4, 188, 0 }, /* IEEE80211_MODE_11B */
{ 1, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
{ 1, 3, 4, 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, 2, 3, 102, 0 }, /* IEEE80211_MODE_11B */
{ 1, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
{ 1, 2, 3, 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, 4, 10, 0, 0 }, /* IEEE80211_MODE_11B */
{ 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11G */
{ 3, 4, 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 */
{ 3, 4, 10, 0, 0 }, /* IEEE80211_MODE_11NA */
{ 3, 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, 3, 4, 188, 0 }, /* IEEE80211_MODE_11B */
{ 2, 3, 4, 94, 0 }, /* IEEE80211_MODE_11G */
{ 2, 3, 4, 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, 2, 3, 102, 0 }, /* IEEE80211_MODE_11B */
{ 2, 2, 3, 47, 0 }, /* IEEE80211_MODE_11G */
{ 2, 2, 3, 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_curchan != IEEE80211_CHAN_ANYC)
mode = ieee80211_chan2mode(ic, ic->ic_curchan);
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_dbg(IEEE80211_MSG_WME, "ieee80211_wme_initparams: "
"%s chan [acm %u aifsn %u log2(cwmin) %u "
"log2(cwmax) %u txpoLimit %u]\n",
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_dbg(IEEE80211_MSG_WME, "ieee80211_wme_initparams: "
"%s bss [acm %u aifsn %u log2(cwmin) %u "
"log2(cwmax) %u txpoLimit %u]\n",
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->in_intval) / 100;
ieee80211_wme_updateparams(ic);
}
}
/*
* Update WME parameters for ourself and the BSS.
*/
void
ieee80211_wme_updateparams(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 */
{ 2, 4, 10, 64, 0 }, /* IEEE80211_MODE_11NG */
};
struct ieee80211_wme_state *wme = &ic->ic_wme;
const struct wmeParams *wmep;
struct wmeParams *chanp, *bssp;
enum ieee80211_phymode mode;
int i;
if ((ic->ic_caps & IEEE80211_C_WME) == 0)
return;
/* 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_curchan != IEEE80211_CHAN_ANYC)
mode = ieee80211_chan2mode(ic, ic->ic_curchan);
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->in_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_dbg(IEEE80211_MSG_WME,
"ieee80211_wme_updateparams_locked: "
"%s [acm %u aifsn %u log2(cwmin) %u "
"log2(cwmax) %u txpoLimit %u]\n",
ieee80211_wme_acnames[WME_AC_BE],
chanp->wmep_acm,
chanp->wmep_aifsn,
chanp->wmep_logcwmin,
chanp->wmep_logcwmax,
chanp->wmep_txopLimit);
}
wme->wme_update(ic);
ieee80211_dbg(IEEE80211_MSG_WME, "ieee80211_wme_updateparams(): "
"%s: WME params updated, cap_info 0x%x\n",
ic->ic_opmode == IEEE80211_M_STA ?
wme->wme_wmeChanParams.cap_info :
wme->wme_bssChanParams.cap_info);
}
/*
* Process STA mode beacon miss events. Send a direct probe request
* frame to the current ap bmiss_max times (w/o answer) before
* scanning for a new ap.
*/
void
ieee80211_beacon_miss(ieee80211com_t *ic)
{
ieee80211_impl_t *im = ic->ic_private;
if (ic->ic_flags & IEEE80211_F_SCAN)
return;
ieee80211_dbg(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;
}
IEEE80211_LOCK(ic);
if (++im->im_bmiss_count < im->im_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_UNLOCK(ic);
(void) ieee80211_send_probereq(ic->ic_bss, ic->ic_macaddr,
ic->ic_bss->in_bssid, ic->ic_bss->in_bssid,
ic->ic_bss->in_essid, ic->ic_bss->in_esslen,
ic->ic_opt_ie, ic->ic_opt_ie_len);
return;
}
im->im_bmiss_count = 0;
IEEE80211_UNLOCK(ic);
ieee80211_new_state(ic, IEEE80211_S_SCAN, 0);
}
/*
* Manage state transition between INIT | AUTH | ASSOC | RUN.
*/
static int
ieee80211_newstate(ieee80211com_t *ic, enum ieee80211_state nstate, int arg)
{
struct ieee80211_impl *im = ic->ic_private;
ieee80211_node_t *in;
enum ieee80211_state ostate;
wifi_data_t wd = { 0 };
IEEE80211_LOCK(ic);
ostate = ic->ic_state;
ieee80211_dbg(IEEE80211_MSG_STATE, "ieee80211_newstate(): "
"%s -> %s\n",
ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
ic->ic_state = nstate;
in = ic->ic_bss;
im->im_swbmiss_period = 0; /* Reset software beacon miss period */
switch (nstate) {
case IEEE80211_S_INIT:
IEEE80211_UNLOCK(ic);
switch (ostate) {
case IEEE80211_S_INIT:
return (0);
case IEEE80211_S_SCAN:
ieee80211_cancel_scan(ic);
break;
case IEEE80211_S_AUTH:
break;
case IEEE80211_S_ASSOC:
if (ic->ic_opmode == IEEE80211_M_STA) {
IEEE80211_SEND_MGMT(ic, in,
IEEE80211_FC0_SUBTYPE_DEAUTH,
IEEE80211_REASON_AUTH_LEAVE);
}
break;
case IEEE80211_S_RUN:
switch (ic->ic_opmode) {
case IEEE80211_M_STA:
IEEE80211_SEND_MGMT(ic, in,
IEEE80211_FC0_SUBTYPE_DEAUTH,
IEEE80211_REASON_AUTH_LEAVE);
ieee80211_sta_leave(ic, in);
break;
case IEEE80211_M_IBSS:
ieee80211_notify_node_leave(ic, in);
break;
default:
break;
}
break;
}
IEEE80211_LOCK(ic);
im->im_mgt_timer = 0;
ieee80211_reset_bss(ic);
break;
case IEEE80211_S_SCAN:
switch (ostate) {
case IEEE80211_S_INIT:
IEEE80211_UNLOCK(ic);
ieee80211_begin_scan(ic, (arg == 0) ? B_FALSE : B_TRUE);
return (0);
case IEEE80211_S_SCAN:
/*
* Scan next. If doing an active scan and the
* channel is not marked passive-only then send
* a probe request. Otherwise just listen for
* beacons on the channel.
*/
if ((ic->ic_flags & IEEE80211_F_ASCAN) &&
!IEEE80211_IS_CHAN_PASSIVE(ic->ic_curchan)) {
IEEE80211_UNLOCK(ic);
(void) ieee80211_send_probereq(in,
ic->ic_macaddr, wifi_bcastaddr,
wifi_bcastaddr,
ic->ic_des_essid, ic->ic_des_esslen,
ic->ic_opt_ie, ic->ic_opt_ie_len);
return (0);
}
break;
case IEEE80211_S_RUN:
/* beacon miss */
ieee80211_dbg(IEEE80211_MSG_STATE,
"no recent beacons from %s, rescanning\n",
ieee80211_macaddr_sprintf(in->in_macaddr));
IEEE80211_UNLOCK(ic);
ieee80211_sta_leave(ic, in);
IEEE80211_LOCK(ic);
ic->ic_flags &= ~IEEE80211_F_SIBSS;
/* FALLTHRU */
case IEEE80211_S_AUTH:
case IEEE80211_S_ASSOC:
/* timeout restart scan */
in = ieee80211_find_node(&ic->ic_scan,
ic->ic_bss->in_macaddr);
if (in != NULL) {
in->in_fails++;
ieee80211_unref_node(&in);
}
break;
}
break;
case IEEE80211_S_AUTH:
ASSERT(ic->ic_opmode == IEEE80211_M_STA);
switch (ostate) {
case IEEE80211_S_INIT:
case IEEE80211_S_SCAN:
IEEE80211_UNLOCK(ic);
IEEE80211_SEND_MGMT(ic, in, IEEE80211_FC0_SUBTYPE_AUTH,
1);
return (0);
case IEEE80211_S_AUTH:
case IEEE80211_S_ASSOC:
switch (arg) {
case IEEE80211_FC0_SUBTYPE_AUTH:
IEEE80211_UNLOCK(ic);
IEEE80211_SEND_MGMT(ic, in,
IEEE80211_FC0_SUBTYPE_AUTH, 2);
return (0);
case IEEE80211_FC0_SUBTYPE_DEAUTH:
/* ignore and retry scan on timeout */
break;
}
break;
case IEEE80211_S_RUN:
switch (arg) {
case IEEE80211_FC0_SUBTYPE_AUTH:
ic->ic_state = ostate; /* stay RUN */
IEEE80211_UNLOCK(ic);
IEEE80211_SEND_MGMT(ic, in,
IEEE80211_FC0_SUBTYPE_AUTH, 2);
return (0);
case IEEE80211_FC0_SUBTYPE_DEAUTH:
IEEE80211_UNLOCK(ic);
ieee80211_sta_leave(ic, in);
/* try to re-auth */
IEEE80211_SEND_MGMT(ic, in,
IEEE80211_FC0_SUBTYPE_AUTH, 1);
return (0);
}
break;
}
break;
case IEEE80211_S_ASSOC:
ASSERT(ic->ic_opmode == IEEE80211_M_STA);
switch (ostate) {
case IEEE80211_S_INIT:
case IEEE80211_S_SCAN:
case IEEE80211_S_ASSOC:
ieee80211_dbg(IEEE80211_MSG_ANY, "ieee80211_newstate: "
"invalid transition\n");
break;
case IEEE80211_S_AUTH:
IEEE80211_UNLOCK(ic);
IEEE80211_SEND_MGMT(ic, in,
IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 0);
return (0);
case IEEE80211_S_RUN:
IEEE80211_UNLOCK(ic);
ieee80211_sta_leave(ic, in);
IEEE80211_SEND_MGMT(ic, in,
IEEE80211_FC0_SUBTYPE_ASSOC_REQ, 1);
return (0);
}
break;
case IEEE80211_S_RUN:
switch (ostate) {
case IEEE80211_S_INIT:
ieee80211_err("ieee80211_newstate: "
"invalid transition\n");
break;
case IEEE80211_S_AUTH:
ieee80211_err("ieee80211_newstate: "
"invalid transition\n");
break;
case IEEE80211_S_SCAN: /* adhoc/hostap mode */
case IEEE80211_S_ASSOC: /* infra mode */
ASSERT(in->in_txrate < in->in_rates.ir_nrates);
im->im_mgt_timer = 0;
ieee80211_notify_node_join(ic, in);
/*
* We can send data now; update the fastpath with our
* current associated BSSID and other relevant settings.
*/
wd.wd_secalloc = ieee80211_crypto_getciphertype(ic);
wd.wd_opmode = ic->ic_opmode;
IEEE80211_ADDR_COPY(wd.wd_bssid, in->in_bssid);
wd.wd_qospad = 0;
if (in->in_flags &
(IEEE80211_NODE_QOS|IEEE80211_NODE_HT)) {
wd.wd_qospad = 2;
if (ic->ic_flags & IEEE80211_F_DATAPAD) {
wd.wd_qospad = roundup(wd.wd_qospad,
sizeof (uint32_t));
}
}
(void) mac_pdata_update(ic->ic_mach, &wd, sizeof (wd));
break;
}
/*
* When 802.1x is not in use mark the port authorized
* at this point so traffic can flow.
*/
if (in->in_authmode != IEEE80211_AUTH_8021X)
ieee80211_node_authorize(in);
/*
* Enable inactivity processing.
*/
ic->ic_scan.nt_inact_timer = IEEE80211_INACT_WAIT;
ic->ic_sta.nt_inact_timer = IEEE80211_INACT_WAIT;
break; /* IEEE80211_S_RUN */
} /* switch nstate */
IEEE80211_UNLOCK(ic);
return (0);
}