static void
printies(const u_int8_t *vp, int ielen, int maxcols)
{
while (ielen > 0) {
switch (vp[0]) {
case IEEE80211_ELEMID_VENDOR:
if (iswpaoui(vp))
printie(" WPA", vp, 2 + vp[1], maxcols);
else if (iswmeoui(vp))
printie(" WME", vp, 2 + vp[1], maxcols);
else if (isatherosoui(vp))
printie(" ATH", vp, 2 + vp[1], maxcols);
else
printie(" VEN", vp, 2 + vp[1], maxcols);
break;
case IEEE80211_ELEMID_RSN:
printie(" RSN", vp, 2 + vp[1], maxcols);
break;
default:
printie(" ???", vp, 2 + vp[1], maxcols);
break;
}
ielen -= 2 + vp[1];
vp += 2 + vp[1];
}
}
static void
getIEs(const u_int8_t *vp, int ielen, int maxcols, u_int8_t *str_out)
{
char *ptr = (char *)str_out;
int iTemp = 0;
while (ielen > 0 && iTemp < maxcols) {
switch (vp[0]) {
case IEEE80211_ELEMID_VENDOR:
if (iswpaoui(vp))
sprintf(ptr, " WPA");
else if (iswmeoui(vp))
sprintf(ptr, " WME");
else if (isatherosoui(vp))
sprintf(ptr, " ATH");
else
sprintf(ptr, " VEN");
ptr += 4 ;
iTemp++;
break;
case IEEE80211_ELEMID_RSN:
sprintf(ptr, " RSN");
ptr += 4;
iTemp++;
break;
default:
//sprintf(str_out, " ???");
break;
}
ielen -= 2+vp[1];
vp += 2+vp[1];
}
*ptr = '\0';
}
/*
* Process information elements from association response frame.
* This includes rate negociation, wmm parameter updating and etc.
*/
static int mlme_process_asresp_elements(struct ieee80211_node *ni,
u_int8_t *frm,
u_int32_t ie_len)
{
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211_rsnparms *rsn = &vap->iv_rsn;
struct ieee80211com *ic = ni->ni_ic;
u_int8_t *efrm = frm + ie_len;
u_int8_t *rates, *xrates, *wme, *htcap, *tspecie, *athextcap;
u_int8_t qosinfo;
int ht_rates_allowed;
ASSERT((vap->iv_opmode != IEEE80211_M_STA) || (ni == vap->iv_bss));
rates = xrates = wme = htcap = tspecie = athextcap = NULL;
while (frm < efrm) {
switch (*frm) {
case IEEE80211_ELEMID_RATES:
rates = frm;
break;
case IEEE80211_ELEMID_XRATES:
xrates = frm;
break;
case IEEE80211_ELEMID_HTCAP_ANA:
htcap = (u_int8_t *)&((struct ieee80211_ie_htcap *)frm)->hc_ie;
break;
case IEEE80211_ELEMID_HTCAP:
if (htcap == NULL) {
htcap = (u_int8_t *)&((struct ieee80211_ie_htcap *)frm)->hc_ie;
}
break;
case IEEE80211_ELEMID_VENDOR:
if (iswmeoui(frm, WME_PARAM_OUI_SUBTYPE))
wme = frm;
else if (iswmeoui(frm, WME_INFO_OUI_SUBTYPE))
wme = frm;
else if (iswmeoui(frm, WME_TSPEC_OUI_SUBTYPE))
tspecie = frm;
else if(ishtcap(frm)) {
if (htcap == NULL) {
htcap = (u_int8_t *)&((struct vendor_ie_htcap *)frm)->hc_ie;
}
}
else if (isatheros_extcap_oui(frm))
athextcap = frm;
break;
}
frm += frm[1] + 2;
}
if (!rates || (rates[1] > IEEE80211_RATE_MAXSIZE)) {
/* XXX: msg + stats */
return -EINVAL;
}
if (!ieee80211_setup_rates(ni, rates, xrates,
IEEE80211_F_DOSORT | IEEE80211_F_DOFRATE |
IEEE80211_F_DOXSECT)) {
printk("%s: association failed (rate set mismatch)\n", __func__);
return -EINVAL;
}
/*
* U-APSD is enabled/disabled per-association.
*/
if (wme != NULL) {
/* Parse IE according to subtype */
if (iswmeparam(wme)) {
/* Association is QOS-enabled */
ieee80211node_set_flag(ni, IEEE80211_NODE_QOS);
if (vap->iv_opmode != IEEE80211_M_BTAMP &&
ieee80211_parse_wmeparams(vap, wme, &qosinfo, 1) >= 0) {
/* Check if association is UAPSD-enabled */
if (qosinfo & WME_CAPINFO_UAPSD_EN) {
ieee80211node_set_flag(ni, IEEE80211_NODE_UAPSD);
}
else {
ieee80211node_clear_flag(ni, IEEE80211_NODE_UAPSD);
}
ieee80211_wme_updateparams(vap);
}
}
else {
/*** QOS requires WME Param */
ieee80211node_clear_flag(ni, IEEE80211_NODE_QOS);
if (ieee80211_parse_wmeinfo(vap, wme, &qosinfo) >= 0) {
/* Check if association is UAPSD-enabled */
if (qosinfo & WME_CAPINFO_UAPSD_EN) {
ieee80211node_set_flag(ni, IEEE80211_NODE_UAPSD);
}
else {
ieee80211node_clear_flag(ni, IEEE80211_NODE_UAPSD);
}
ieee80211_wme_updateinfo(vap);
}
}
}
else {
ieee80211node_clear_flag(ni, IEEE80211_NODE_QOS);
ieee80211node_clear_flag(ni, IEEE80211_NODE_UAPSD);
}
if ((tspecie != NULL) &&
(ieee80211_parse_tspecparams(vap, tspecie) >= 0)) {
/* store the tspec */
}
if (athextcap != NULL)
ieee80211_process_athextcap_ie(ni, athextcap);
/*
* With WEP and TKIP encryption algorithms:
* Disable aggregation if IEEE80211_NODE_WEPTKIPAGGR is not set.
* Disable 11n if IEEE80211_FEXT_WEP_TKIP_HTRATE is not set.
*/
ht_rates_allowed = IEEE80211_IS_CHAN_11N(ic->ic_curchan);
if (IEEE80211_VAP_IS_PRIVACY_ENABLED(vap) &&
(RSN_CIPHER_IS_WEP(rsn) ||
(RSN_CIPHER_IS_TKIP(rsn) && !RSN_CIPHER_IS_CCMP(rsn)))) {
ieee80211node_set_flag(ni, IEEE80211_NODE_WEPTKIP);
if (ieee80211_ic_wep_tkip_htrate_is_set(ic)) {
if (!ieee80211_has_weptkipaggr(ni))
ieee80211node_set_flag(ni, IEEE80211_NODE_NOAMPDU);
} else {
ht_rates_allowed = 0;
}
}
/* 11n - HT rates not allowed using WEP and TKIP */
if ((htcap != NULL) && (ht_rates_allowed)) {
/* record capabilities, mark node as capable of HT */
ieee80211_parse_htcap(ni, htcap);
if (!ieee80211_setup_ht_rates(ni, htcap,
IEEE80211_F_DOFRATE | IEEE80211_F_DOXSECT |
IEEE80211_F_DOBRS)) {
printk("%s: association failed (rate set mismatch)\n", __func__);
return -EINVAL;
}
#ifdef ATH_SUPPORT_TxBF
// set keycache for txbf after sta associated successfully.
if ( ni->ni_explicit_compbf || ni->ni_explicit_noncompbf || ni->ni_implicit_bf){
struct ieee80211com *ic = vap->iv_ic;
ieee80211_set_TxBF_keycache(ic,ni);
ni->ni_bf_update_cv = 1;
ni->ni_allow_cv_update = 1;
}
#endif
} else {
/*
* Flush any state from a previous association.
*/
ieee80211node_clear_flag(ni, IEEE80211_NODE_HT);
IEEE80211_NODE_CLEAR_HTCAP(ni);
}
return EOK;
}