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Diffstat (limited to 'net/mac80211/mlme.c')
-rw-r--r--net/mac80211/mlme.c85
1 files changed, 51 insertions, 34 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index e3f2cb08658..6b75cb6c630 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2588,22 +2588,29 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
#endif
}
- bss->band = rx_status->band;
-
- if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
- bss->probe_resp && beacon) {
- /* STA mode:
- * Do not allow beacon to override data from Probe Response. */
- ieee80211_rx_bss_put(dev, bss);
- return;
- }
-
/* save the ERP value so that it is available at association time */
if (elems.erp_info && elems.erp_info_len >= 1) {
bss->erp_value = elems.erp_info[0];
bss->has_erp_value = 1;
}
+ if (elems.ht_cap_elem &&
+ (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
+ memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
+ if (bss->ht_ie) {
+ memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
+ elems.ht_cap_elem_len + 2);
+ bss->ht_ie_len = elems.ht_cap_elem_len + 2;
+ } else
+ bss->ht_ie_len = 0;
+ } else if (!elems.ht_cap_elem && bss->ht_ie) {
+ kfree(bss->ht_ie);
+ bss->ht_ie = NULL;
+ bss->ht_ie_len = 0;
+ }
+
bss->beacon_int = le16_to_cpu(mgmt->u.beacon.beacon_int);
bss->capability = le16_to_cpu(mgmt->u.beacon.capab_info);
@@ -2625,6 +2632,26 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
bss->supp_rates_len += clen;
}
+ bss->band = rx_status->band;
+
+ bss->timestamp = beacon_timestamp;
+ bss->last_update = jiffies;
+ bss->rssi = rx_status->ssi;
+ bss->signal = rx_status->signal;
+ bss->noise = rx_status->noise;
+ if (!beacon && !bss->probe_resp)
+ bss->probe_resp = true;
+
+ /*
+ * In STA mode, the remaining parameters should not be overridden
+ * by beacons because they're not necessarily accurate there.
+ */
+ if (sdata->vif.type != IEEE80211_IF_TYPE_IBSS &&
+ bss->probe_resp && beacon) {
+ ieee80211_rx_bss_put(dev, bss);
+ return;
+ }
+
if (elems.wpa &&
(!bss->wpa_ie || bss->wpa_ie_len != elems.wpa_len ||
memcmp(bss->wpa_ie, elems.wpa, elems.wpa_len))) {
@@ -2657,6 +2684,20 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
bss->rsn_ie_len = 0;
}
+ /*
+ * Cf.
+ * http://www.wipo.int/pctdb/en/wo.jsp?wo=2007047181&IA=WO2007047181&DISPLAY=DESC
+ *
+ * quoting:
+ *
+ * In particular, "Wi-Fi CERTIFIED for WMM - Support for Multimedia
+ * Applications with Quality of Service in Wi-Fi Networks," Wi- Fi
+ * Alliance (September 1, 2004) is incorporated by reference herein.
+ * The inclusion of the WMM Parameters in probe responses and
+ * association responses is mandatory for WMM enabled networks. The
+ * inclusion of the WMM Parameters in beacons, however, is optional.
+ */
+
if (elems.wmm_param &&
(!bss->wmm_ie || bss->wmm_ie_len != elems.wmm_param_len ||
memcmp(bss->wmm_ie, elems.wmm_param, elems.wmm_param_len))) {
@@ -2673,30 +2714,6 @@ static void ieee80211_rx_bss_info(struct net_device *dev,
bss->wmm_ie = NULL;
bss->wmm_ie_len = 0;
}
- if (elems.ht_cap_elem &&
- (!bss->ht_ie || bss->ht_ie_len != elems.ht_cap_elem_len ||
- memcmp(bss->ht_ie, elems.ht_cap_elem, elems.ht_cap_elem_len))) {
- kfree(bss->ht_ie);
- bss->ht_ie = kmalloc(elems.ht_cap_elem_len + 2, GFP_ATOMIC);
- if (bss->ht_ie) {
- memcpy(bss->ht_ie, elems.ht_cap_elem - 2,
- elems.ht_cap_elem_len + 2);
- bss->ht_ie_len = elems.ht_cap_elem_len + 2;
- } else
- bss->ht_ie_len = 0;
- } else if (!elems.ht_cap_elem && bss->ht_ie) {
- kfree(bss->ht_ie);
- bss->ht_ie = NULL;
- bss->ht_ie_len = 0;
- }
-
- bss->timestamp = beacon_timestamp;
- bss->last_update = jiffies;
- bss->rssi = rx_status->ssi;
- bss->signal = rx_status->signal;
- bss->noise = rx_status->noise;
- if (!beacon)
- bss->probe_resp++;
/* check if we need to merge IBSS */
if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && beacon &&