+static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie)
+{
+ const u8 *end, *pos;
+
+ if (ies == NULL)
+ return NULL;
+
+ pos = ies;
+ end = ies + ies_len;
+
+ while (pos + 1 < end) {
+ if (pos + 2 + pos[1] > end)
+ break;
+ if (pos[0] == ie)
+ return pos;
+ pos += 2 + pos[1];
+ }
+
+ return NULL;
+}
+
+
+static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv,
+ const u8 *ie, size_t ie_len)
+{
+ const u8 *ssid;
+ size_t i;
+
+ if (drv->filter_ssids == NULL)
+ return 0;
+
+ ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID);
+ if (ssid == NULL)
+ return 1;
+
+ for (i = 0; i < drv->num_filter_ssids; i++) {
+ if (ssid[1] == drv->filter_ssids[i].ssid_len &&
+ os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) ==
+ 0)
+ return 0;
+ }
+
+ return 1;
+}
+
+
+struct nl80211_bss_info_arg {
+ struct wpa_driver_nl80211_data *drv;
+ struct wpa_scan_results *res;
+};
+