int
an_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg)
{
struct an_softc *sc = ic->ic_softc;
struct ieee80211_node *ni = ic->ic_bss;
enum ieee80211_state ostate;
int buflen;
ostate = ic->ic_state;
DPRINTF(("an_newstate: %s -> %s\n", ieee80211_state_name[ostate],
ieee80211_state_name[nstate]));
switch (nstate) {
case IEEE80211_S_INIT:
ic->ic_flags &= ~IEEE80211_F_IBSSON;
return (*sc->sc_newstate)(ic, nstate, arg);
case IEEE80211_S_RUN:
buflen = sizeof(sc->sc_buf);
an_read_rid(sc, AN_RID_STATUS, &sc->sc_buf, &buflen);
an_swap16((u_int16_t *)&sc->sc_buf.sc_status.an_cur_bssid, 3);
an_swap16((u_int16_t *)&sc->sc_buf.sc_status.an_ssid, 16);
IEEE80211_ADDR_COPY(ni->ni_bssid,
sc->sc_buf.sc_status.an_cur_bssid);
IEEE80211_ADDR_COPY(ni->ni_macaddr, ni->ni_bssid);
ni->ni_chan = &ic->ic_channels[
sc->sc_buf.sc_status.an_cur_channel];
ni->ni_esslen = sc->sc_buf.sc_status.an_ssidlen;
if (ni->ni_esslen > IEEE80211_NWID_LEN)
ni->ni_esslen = IEEE80211_NWID_LEN; /*XXX*/
memcpy(ni->ni_essid, sc->sc_buf.sc_status.an_ssid,
ni->ni_esslen);
ni->ni_rates = ic->ic_sup_rates[IEEE80211_MODE_11B]; /*XXX*/
if (ic->ic_if.if_flags & IFF_DEBUG) {
printf("%s: ", sc->sc_dev.dv_xname);
if (ic->ic_opmode == IEEE80211_M_STA)
printf("associated ");
else
printf("synchronized ");
printf("with %s ssid ", ether_sprintf(ni->ni_bssid));
ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
printf(" channel %u start %uMb\n",
sc->sc_buf.sc_status.an_cur_channel,
sc->sc_buf.sc_status.an_current_tx_rate/2);
}
break;
default:
break;
}
ic->ic_state = nstate;
/* skip standard ieee80211 handling */
return 0;
}
void
ieee80211_scan_dump_probe_beacon(uint8_t subtype, int isnew,
const uint8_t mac[IEEE80211_ADDR_LEN],
const struct ieee80211_scanparams *sp, int rssi)
{
printf("[%s] %s%s on chan %u (bss chan %u) ",
ether_sprintf(mac), isnew ? "new " : "",
ieee80211_mgt_subtype_name(subtype), sp->chan, sp->bchan);
ieee80211_print_essid(sp->ssid + 2, sp->ssid[1]);
printf(" rssi %d\n", rssi);
if (isnew) {
printf("[%s] caps 0x%x bintval %u erp 0x%x",
ether_sprintf(mac), sp->capinfo, sp->bintval, sp->erp);
if (sp->country != NULL)
dump_country(sp->country);
printf("\n");
}
}
/*
* IEEE80211_M_IBSS+IEEE80211_M_AHDEMO vap state machine handler.
*/
static int
adhoc_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
{
struct ieee80211com *ic = vap->iv_ic;
struct ieee80211_node *ni;
enum ieee80211_state ostate;
IEEE80211_LOCK_ASSERT(vap->iv_ic);
ostate = vap->iv_state;
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE, "%s: %s -> %s (%d)\n",
__func__, ieee80211_state_name[ostate],
ieee80211_state_name[nstate], arg);
vap->iv_state = nstate; /* state transition */
if (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_SCAN:
ieee80211_cancel_scan(vap);
break;
default:
break;
}
if (ostate != IEEE80211_S_INIT) {
/* NB: optimize INIT -> INIT case */
ieee80211_reset_bss(vap);
}
break;
case IEEE80211_S_SCAN:
switch (ostate) {
case IEEE80211_S_RUN: /* beacon miss */
/* purge station table; entries are stale */
ieee80211_iterate_nodes(&ic->ic_sta, sta_leave, vap);
/* fall thru... */
case IEEE80211_S_INIT:
if (vap->iv_des_chan != IEEE80211_CHAN_ANYC &&
!IEEE80211_IS_CHAN_RADAR(vap->iv_des_chan)) {
/*
* Already have a channel; bypass the
* scan and startup immediately.
*/
ieee80211_create_ibss(vap,
ieee80211_ht_adjust_channel(ic,
vap->iv_des_chan, vap->iv_flags_ht));
break;
}
/*
* Initiate a scan. We can come here as a result
* of an IEEE80211_IOC_SCAN_REQ too in which case
* the vap will be marked with IEEE80211_FEXT_SCANREQ
* and the scan request parameters will be present
* in iv_scanreq. Otherwise we do the default.
*/
if (vap->iv_flags_ext & IEEE80211_FEXT_SCANREQ) {
ieee80211_check_scan(vap,
vap->iv_scanreq_flags,
vap->iv_scanreq_duration,
vap->iv_scanreq_mindwell,
vap->iv_scanreq_maxdwell,
vap->iv_scanreq_nssid, vap->iv_scanreq_ssid);
vap->iv_flags_ext &= ~IEEE80211_FEXT_SCANREQ;
} else
ieee80211_check_scan_current(vap);
break;
case IEEE80211_S_SCAN:
/*
* This can happen because of a change in state
* that requires a reset. Trigger a new scan
* unless we're in manual roaming mode in which
* case an application must issue an explicit request.
*/
if (vap->iv_roaming == IEEE80211_ROAMING_AUTO)
ieee80211_check_scan_current(vap);
break;
default:
goto invalid;
}
break;
case IEEE80211_S_RUN:
if (vap->iv_flags & IEEE80211_F_WPA) {
/* XXX validate prerequisites */
}
switch (ostate) {
case IEEE80211_S_SCAN:
#ifdef IEEE80211_DEBUG
if (ieee80211_msg_debug(vap)) {
ieee80211_note(vap,
"synchronized with %s ssid ",
ether_sprintf(ni->ni_bssid));
ieee80211_print_essid(vap->iv_bss->ni_essid,
ni->ni_esslen);
/* XXX MCS/HT */
printf(" channel %d start %uMb\n",
ieee80211_chan2ieee(ic, ic->ic_curchan),
IEEE80211_RATE2MBS(ni->ni_txrate));
}
#endif
break;
case IEEE80211_S_RUN: /* IBSS merge */
break;
default:
goto invalid;
}
/*
* 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);
/*
* Fake association when joining an existing bss.
*/
if (!IEEE80211_ADDR_EQ(ni->ni_macaddr, vap->iv_myaddr) &&
ic->ic_newassoc != NULL)
ic->ic_newassoc(ni, ostate != IEEE80211_S_RUN);
break;
case IEEE80211_S_SLEEP:
vap->iv_sta_ps(vap, 0);
break;
default:
invalid:
IEEE80211_DPRINTF(vap, IEEE80211_MSG_STATE,
"%s: unexpected state transition %s -> %s\n", __func__,
ieee80211_state_name[ostate], ieee80211_state_name[nstate]);
break;
}
return 0;
}
int
ieee80211_match_bss(struct ieee80211com *ic, struct ieee80211_node *ni)
{
u_int8_t rate;
int fail;
fail = 0;
if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
fail |= 0x01;
if (ic->ic_des_chan != IEEE80211_CHAN_ANYC &&
ni->ni_chan != ic->ic_des_chan)
fail |= 0x01;
#ifndef IEEE80211_STA_ONLY
if (ic->ic_opmode == IEEE80211_M_IBSS) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
fail |= 0x02;
} else
#endif
{
if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
fail |= 0x02;
}
if (ic->ic_flags & (IEEE80211_F_WEPON | IEEE80211_F_RSNON)) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
fail |= 0x04;
} else {
if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
fail |= 0x04;
}
rate = ieee80211_fix_rate(ic, ni, IEEE80211_F_DONEGO);
if (rate & IEEE80211_RATE_BASIC)
fail |= 0x08;
if (ic->ic_des_esslen != 0 &&
(ni->ni_esslen != ic->ic_des_esslen ||
memcmp(ni->ni_essid, ic->ic_des_essid, ic->ic_des_esslen) != 0))
fail |= 0x10;
if ((ic->ic_flags & IEEE80211_F_DESBSSID) &&
!IEEE80211_ADDR_EQ(ic->ic_des_bssid, ni->ni_bssid))
fail |= 0x20;
if (ic->ic_flags & IEEE80211_F_RSNON) {
/*
* If at least one RSN IE field from the AP's RSN IE fails
* to overlap with any value the STA supports, the STA shall
* decline to associate with that AP.
*/
if ((ni->ni_rsnprotos & ic->ic_rsnprotos) == 0)
fail |= 0x40;
if ((ni->ni_rsnakms & ic->ic_rsnakms) == 0)
fail |= 0x40;
if ((ni->ni_rsnakms & ic->ic_rsnakms &
~(IEEE80211_AKM_PSK | IEEE80211_AKM_SHA256_PSK)) == 0) {
/* AP only supports PSK AKMPs */
if (!(ic->ic_flags & IEEE80211_F_PSK))
fail |= 0x40;
}
if (ni->ni_rsngroupcipher != IEEE80211_CIPHER_WEP40 &&
ni->ni_rsngroupcipher != IEEE80211_CIPHER_TKIP &&
ni->ni_rsngroupcipher != IEEE80211_CIPHER_CCMP &&
ni->ni_rsngroupcipher != IEEE80211_CIPHER_WEP104)
fail |= 0x40;
if ((ni->ni_rsnciphers & ic->ic_rsnciphers) == 0)
fail |= 0x40;
/* we only support BIP as the IGTK cipher */
if ((ni->ni_rsncaps & IEEE80211_RSNCAP_MFPC) &&
ni->ni_rsngroupmgmtcipher != IEEE80211_CIPHER_BIP)
fail |= 0x40;
/* we do not support MFP but AP requires it */
if (!(ic->ic_caps & IEEE80211_C_MFP) &&
(ni->ni_rsncaps & IEEE80211_RSNCAP_MFPR))
fail |= 0x40;
/* we require MFP but AP does not support it */
if ((ic->ic_caps & IEEE80211_C_MFP) &&
(ic->ic_flags & IEEE80211_F_MFPR) &&
!(ni->ni_rsncaps & IEEE80211_RSNCAP_MFPC))
fail |= 0x40;
}
#ifdef IEEE80211_DEBUG
if (ic->ic_if.if_flags & IFF_DEBUG) {
printf(" %c %s", fail ? '-' : '+',
ether_sprintf(ni->ni_macaddr));
printf(" %s%c", ether_sprintf(ni->ni_bssid),
fail & 0x20 ? '!' : ' ');
printf(" %3d%c", ieee80211_chan2ieee(ic, ni->ni_chan),
fail & 0x01 ? '!' : ' ');
printf(" %+4d", ni->ni_rssi);
printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
fail & 0x08 ? '!' : ' ');
printf(" %4s%c",
(ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
(ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
"????",
fail & 0x02 ? '!' : ' ');
printf(" %7s%c ",
(ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ?
"privacy" : "no",
fail & 0x04 ? '!' : ' ');
printf(" %3s%c ",
(ic->ic_flags & IEEE80211_F_RSNON) ?
"rsn" : "no",
fail & 0x40 ? '!' : ' ');
ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
printf("%s\n", fail & 0x10 ? "!" : "");
}
#endif
return fail;
}
int
ieee80211_match_bss(struct ieee80211com *ic, struct ieee80211_node *ni)
{
u_int8_t rate;
int fail;
fail = 0;
if (isclr(ic->ic_chan_active, ieee80211_chan2ieee(ic, ni->ni_chan)))
fail |= 0x01;
if (ic->ic_des_chan != IEEE80211_CHAN_ANYC &&
ni->ni_chan != ic->ic_des_chan)
fail |= 0x01;
if (ic->ic_opmode == IEEE80211_M_IBSS) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) == 0)
fail |= 0x02;
} else {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_ESS) == 0)
fail |= 0x02;
}
if (ic->ic_flags & IEEE80211_F_WEPON) {
if ((ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) == 0)
fail |= 0x04;
} else {
/* XXX does this mean privacy is supported or required? */
if (ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY)
fail |= 0x04;
}
rate = ieee80211_fix_rate(ic, ni, IEEE80211_F_DONEGO);
if (rate & IEEE80211_RATE_BASIC)
fail |= 0x08;
if (ic->ic_des_esslen != 0 &&
(ni->ni_esslen != ic->ic_des_esslen ||
memcmp(ni->ni_essid, ic->ic_des_essid, ic->ic_des_esslen) != 0))
fail |= 0x10;
if ((ic->ic_flags & IEEE80211_F_DESBSSID) &&
!IEEE80211_ADDR_EQ(ic->ic_des_bssid, ni->ni_bssid))
fail |= 0x20;
#ifdef IEEE80211_DEBUG
if (ic->ic_if.if_flags & IFF_DEBUG) {
printf(" %c %s", fail ? '-' : '+',
ether_sprintf(ni->ni_macaddr));
printf(" %s%c", ether_sprintf(ni->ni_bssid),
fail & 0x20 ? '!' : ' ');
printf(" %3d%c", ieee80211_chan2ieee(ic, ni->ni_chan),
fail & 0x01 ? '!' : ' ');
printf(" %+4d", ni->ni_rssi);
printf(" %2dM%c", (rate & IEEE80211_RATE_VAL) / 2,
fail & 0x08 ? '!' : ' ');
printf(" %4s%c",
(ni->ni_capinfo & IEEE80211_CAPINFO_ESS) ? "ess" :
(ni->ni_capinfo & IEEE80211_CAPINFO_IBSS) ? "ibss" :
"????",
fail & 0x02 ? '!' : ' ');
printf(" %3s%c ",
(ni->ni_capinfo & IEEE80211_CAPINFO_PRIVACY) ?
"wep" : "no",
fail & 0x04 ? '!' : ' ');
ieee80211_print_essid(ni->ni_essid, ni->ni_esslen);
printf("%s\n", fail & 0x10 ? "!" : "");
}
#endif
return fail;
}
int
ieee80211_elements(struct ieee80211_frame *wh)
{
u_int8_t *frm;
u_int8_t *tstamp, *bintval, *capinfo;
int i;
frm = (u_int8_t *)&wh[1];
tstamp = frm;
TCHECK2(*tstamp, 8);
frm += 8;
bintval = frm;
TCHECK2(*bintval, 2);
frm += 2;
if (vflag)
PRINTF(", interval %u", letoh16(*(u_int16_t *)bintval));
capinfo = frm;
TCHECK2(*capinfo, 2);
frm += 2;
#if 0
if (vflag)
printb(", caps", letoh16(*(u_int16_t *)capinfo),
IEEE80211_CAPINFO_BITS);
#endif
while (TTEST2(*frm, 2)) {
u_int len = frm[1];
u_int8_t *data = frm + 2;
if (!TTEST2(*data, len))
break;
#define ELEM_CHECK(l) if (len != l) break
switch (*frm) {
case IEEE80211_ELEMID_SSID:
PRINTF(", ssid");
ieee80211_print_essid(data, len);
break;
case IEEE80211_ELEMID_RATES:
if (!vflag)
break;
PRINTF(", rates");
for (i = len; i > 0; i--, data++)
PRINTF(" %uM",
(data[0] & IEEE80211_RATE_VAL) / 2);
break;
case IEEE80211_ELEMID_FHPARMS:
ELEM_CHECK(5);
PRINTF(", fh (dwell %u, chan %u, index %u)",
(data[1] << 8) | data[0],
(data[2] - 1) * 80 + data[3], /* FH_CHAN */
data[4]);
break;
case IEEE80211_ELEMID_DSPARMS:
ELEM_CHECK(1);
if (!vflag)
break;
PRINTF(", ds");
PRINTF(" (chan %u)", data[0]);
break;
case IEEE80211_ELEMID_CFPARMS:
if (!vflag)
break;
PRINTF(", cf");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_TIM:
if (!vflag)
break;
PRINTF(", tim");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_IBSSPARMS:
if (!vflag)
break;
PRINTF(", ibss");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_COUNTRY:
if (!vflag)
break;
PRINTF(", country");
for (i = len; i > 0; i--, data++)
PRINTF(" %u", data[0]);
break;
case IEEE80211_ELEMID_CHALLENGE:
if (!vflag)
break;
PRINTF(", challenge");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_ERP:
if (!vflag)
break;
PRINTF(", erp");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_RSN:
if (!vflag)
break;
PRINTF(", rsn");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_XRATES:
if (!vflag)
break;
PRINTF(", xrates");
for (i = len; i > 0; i--, data++)
PRINTF(" %uM",
(data[0] & IEEE80211_RATE_VAL) / 2);
break;
case IEEE80211_ELEMID_TPC:
if (!vflag)
break;
PRINTF(", tpc");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_CCKM:
if (!vflag)
break;
PRINTF(", cckm");
ieee80211_print_element(data, len);
break;
case IEEE80211_ELEMID_VENDOR:
if (!vflag)
break;
PRINTF(", vendor");
ieee80211_print_element(data, len);
break;
default:
if (!vflag)
break;
PRINTF(", %u:%u", (u_int) *frm, len);
ieee80211_print_element(data, len);
break;
}
frm += len + 2;
if (frm >= snapend)
break;
}
#undef ELEM_CHECK
return (0);
trunc:
/* Truncated elements in frame */
return (1);
}
