+
+ /*
+ * For probe responses, or if we don't have any information yet,
+ * use the IEs from the beacon.
+ */
+ if (!bss->ies || !beacon) {
+ if (bss->ies == NULL || bss->ies_len < elems->total_len) {
+ kfree(bss->ies);
+ bss->ies = kmalloc(elems->total_len, GFP_ATOMIC);
+ }
+ if (bss->ies) {
+ memcpy(bss->ies, elems->ie_start, elems->total_len);
+ bss->ies_len = elems->total_len;
+ } else
+ bss->ies_len = 0;
+ }
+
+ return bss;
+}
+
+static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_mgmt *mgmt,
+ size_t len,
+ struct ieee80211_rx_status *rx_status,
+ struct ieee802_11_elems *elems,
+ bool beacon)
+{
+ struct ieee80211_local *local = sdata->local;
+ int freq;
+ struct ieee80211_sta_bss *bss;
+ struct sta_info *sta;
+ struct ieee80211_channel *channel;
+ u64 beacon_timestamp, rx_timestamp;
+ u64 supp_rates = 0;
+ enum ieee80211_band band = rx_status->band;
+ DECLARE_MAC_BUF(mac);
+ DECLARE_MAC_BUF(mac2);
+
+ if (elems->ds_params && elems->ds_params_len == 1)
+ freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
+ else
+ freq = rx_status->freq;
+
+ channel = ieee80211_get_channel(local->hw.wiphy, freq);
+
+ if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
+ return;
+
+ if (ieee80211_vif_is_mesh(&sdata->vif) && elems->mesh_id &&
+ elems->mesh_config && mesh_matches_local(elems, sdata)) {
+ supp_rates = ieee80211_sta_get_rates(local, elems, band);
+
+ mesh_neighbour_update(mgmt->sa, supp_rates, sdata,
+ mesh_peer_accepts_plinks(elems));
+ }
+
+ if (sdata->vif.type == IEEE80211_IF_TYPE_IBSS && elems->supp_rates &&
+ memcmp(mgmt->bssid, sdata->u.sta.bssid, ETH_ALEN) == 0) {
+ supp_rates = ieee80211_sta_get_rates(local, elems, band);
+
+ rcu_read_lock();
+
+ sta = sta_info_get(local, mgmt->sa);
+ if (sta) {
+ u64 prev_rates;
+
+ prev_rates = sta->supp_rates[band];
+ /* make sure mandatory rates are always added */
+ sta->supp_rates[band] = supp_rates |
+ ieee80211_sta_get_mandatory_rates(local, band);
+
+#ifdef CONFIG_MAC80211_IBSS_DEBUG
+ if (sta->supp_rates[band] != prev_rates)
+ printk(KERN_DEBUG "%s: updated supp_rates set "
+ "for %s based on beacon info (0x%llx | "
+ "0x%llx -> 0x%llx)\n",
+ sdata->dev->name, print_mac(mac, sta->addr),
+ (unsigned long long) prev_rates,
+ (unsigned long long) supp_rates,
+ (unsigned long long) sta->supp_rates[band]);
+#endif
+ } else {
+ ieee80211_ibss_add_sta(sdata, NULL, mgmt->bssid,
+ mgmt->sa, supp_rates);
+ }
+
+ rcu_read_unlock();
+ }
+
+ bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
+ freq, beacon);
+ if (!bss)
+ return;
+
+ /* was just updated in ieee80211_bss_info_update */
+ beacon_timestamp = bss->timestamp;
+