#define WPA_BSS_IES_CHANGED_FLAG BIT(8)
+static void wpa_bss_set_hessid(struct wpa_bss *bss)
+{
+#ifdef CONFIG_INTERWORKING
+ const u8 *ie = wpa_bss_get_ie(bss, WLAN_EID_INTERWORKING);
+ if (ie == NULL || (ie[1] != 7 && ie[1] != 9)) {
+ os_memset(bss->hessid, 0, ETH_ALEN);
+ return;
+ }
+ if (ie[1] == 7)
+ os_memcpy(bss->hessid, ie + 3, ETH_ALEN);
+ else
+ os_memcpy(bss->hessid, ie + 5, ETH_ALEN);
+#endif /* CONFIG_INTERWORKING */
+}
+
+
+struct wpa_bss_anqp * wpa_bss_anqp_alloc(void)
+{
+ struct wpa_bss_anqp *anqp;
+ anqp = os_zalloc(sizeof(*anqp));
+ if (anqp == NULL)
+ return NULL;
+ anqp->users = 1;
+ return anqp;
+}
+
+
+static void wpa_bss_anqp_free(struct wpa_bss_anqp *anqp)
+{
+ if (anqp == NULL)
+ return;
+
+ anqp->users--;
+ if (anqp->users > 0) {
+ /* Another BSS entry holds a pointer to this ANQP info */
+ return;
+ }
+
+#ifdef CONFIG_INTERWORKING
+ wpabuf_free(anqp->venue_name);
+ wpabuf_free(anqp->network_auth_type);
+ wpabuf_free(anqp->roaming_consortium);
+ wpabuf_free(anqp->ip_addr_type_availability);
+ wpabuf_free(anqp->nai_realm);
+ wpabuf_free(anqp->anqp_3gpp);
+ wpabuf_free(anqp->domain_name);
+#endif /* CONFIG_INTERWORKING */
+#ifdef CONFIG_HS20
+ wpabuf_free(anqp->hs20_operator_friendly_name);
+ wpabuf_free(anqp->hs20_wan_metrics);
+ wpabuf_free(anqp->hs20_connection_capability);
+ wpabuf_free(anqp->hs20_operating_class);
+#endif /* CONFIG_HS20 */
+
+ os_free(anqp);
+}
+
+
static void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
const char *reason)
{
+ if (wpa_s->last_scan_res) {
+ unsigned int i;
+ for (i = 0; i < wpa_s->last_scan_res_used; i++) {
+ if (wpa_s->last_scan_res[i] == bss) {
+ os_memmove(&wpa_s->last_scan_res[i],
+ &wpa_s->last_scan_res[i + 1],
+ (wpa_s->last_scan_res_used - i - 1)
+ * sizeof(struct wpa_bss *));
+ wpa_s->last_scan_res_used--;
+ break;
+ }
+ }
+ }
dl_list_del(&bss->list);
dl_list_del(&bss->list_id);
wpa_s->num_bss--;
" SSID '%s' due to %s", bss->id, MAC2STR(bss->bssid),
wpa_ssid_txt(bss->ssid, bss->ssid_len), reason);
wpas_notify_bss_removed(wpa_s, bss->bssid, bss->id);
-#ifdef CONFIG_INTERWORKING
- wpabuf_free(bss->anqp_venue_name);
- wpabuf_free(bss->anqp_network_auth_type);
- wpabuf_free(bss->anqp_roaming_consortium);
- wpabuf_free(bss->anqp_ip_addr_type_availability);
- wpabuf_free(bss->anqp_nai_realm);
- wpabuf_free(bss->anqp_3gpp);
- wpabuf_free(bss->anqp_domain_name);
-#endif /* CONFIG_INTERWORKING */
-#ifdef CONFIG_HS20
- wpabuf_free(bss->hs20_operator_friendly_name);
- wpabuf_free(bss->hs20_wan_metrics);
- wpabuf_free(bss->hs20_connection_capability);
- wpabuf_free(bss->hs20_operating_class);
-#endif /* CONFIG_HS20 */
+ wpa_bss_anqp_free(bss->anqp);
os_free(bss);
}
}
-static void wpa_bss_add(struct wpa_supplicant *wpa_s,
- const u8 *ssid, size_t ssid_len,
- struct wpa_scan_res *res)
+static struct wpa_bss * wpa_bss_add(struct wpa_supplicant *wpa_s,
+ const u8 *ssid, size_t ssid_len,
+ struct wpa_scan_res *res)
{
struct wpa_bss *bss;
bss = os_zalloc(sizeof(*bss) + res->ie_len + res->beacon_ie_len);
if (bss == NULL)
- return;
+ return NULL;
bss->id = wpa_s->bss_next_id++;
bss->last_update_idx = wpa_s->bss_update_idx;
wpa_bss_copy_res(bss, res);
bss->ie_len = res->ie_len;
bss->beacon_ie_len = res->beacon_ie_len;
os_memcpy(bss + 1, res + 1, res->ie_len + res->beacon_ie_len);
+ wpa_bss_set_hessid(bss);
dl_list_add_tail(&wpa_s->bss, &bss->list);
dl_list_add_tail(&wpa_s->bss_id, &bss->list_id);
"not get here!", (int) wpa_s->num_bss);
wpa_s->conf->bss_max_count = wpa_s->num_bss;
}
+ return bss;
}
}
-static void wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
- struct wpa_scan_res *res)
+static struct wpa_bss *
+wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
+ struct wpa_scan_res *res)
{
u32 changes;
nbss = os_realloc(bss, sizeof(*bss) + res->ie_len +
res->beacon_ie_len);
if (nbss) {
+ unsigned int i;
+ for (i = 0; i < wpa_s->last_scan_res_used; i++) {
+ if (wpa_s->last_scan_res[i] == bss) {
+ wpa_s->last_scan_res[i] = nbss;
+ break;
+ }
+ }
if (wpa_s->current_bss == bss)
wpa_s->current_bss = nbss;
bss = nbss;
}
dl_list_add(prev, &bss->list_id);
}
+ if (changes & WPA_BSS_IES_CHANGED_FLAG)
+ wpa_bss_set_hessid(bss);
dl_list_add_tail(&wpa_s->bss, &bss->list);
notify_bss_changes(wpa_s, changes, bss);
+
+ return bss;
}
wpa_s->bss_update_idx++;
wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Start scan result update %u",
wpa_s->bss_update_idx);
+ wpa_s->last_scan_res_used = 0;
}
* (to save memory) */
bss = wpa_bss_get(wpa_s, res->bssid, ssid + 2, ssid[1]);
if (bss == NULL)
- wpa_bss_add(wpa_s, ssid + 2, ssid[1], res);
+ bss = wpa_bss_add(wpa_s, ssid + 2, ssid[1], res);
else
- wpa_bss_update(wpa_s, bss, res);
+ bss = wpa_bss_update(wpa_s, bss, res);
+
+ if (bss == NULL)
+ return;
+ if (wpa_s->last_scan_res_used >= wpa_s->last_scan_res_size) {
+ struct wpa_bss **n;
+ unsigned int siz;
+ if (wpa_s->last_scan_res_size == 0)
+ siz = 32;
+ else
+ siz = wpa_s->last_scan_res_size * 2;
+ n = os_realloc_array(wpa_s->last_scan_res, siz,
+ sizeof(struct wpa_bss *));
+ if (n == NULL)
+ return;
+ wpa_s->last_scan_res = n;
+ wpa_s->last_scan_res_size = siz;
+ }
+
+ wpa_s->last_scan_res[wpa_s->last_scan_res_used++] = bss;
}
{
struct wpa_bss *bss, *n;
+ wpa_s->last_scan_full = 0;
+ os_get_time(&wpa_s->last_scan);
if (!new_scan)
return; /* do not expire entries without new scan */
+ if (info && !info->aborted && !info->freqs) {
+ size_t i;
+ if (info->num_ssids == 0) {
+ wpa_s->last_scan_full = 1;
+ } else {
+ for (i = 0; i < info->num_ssids; i++) {
+ if (info->ssids[i].ssid == NULL ||
+ info->ssids[i].ssid_len == 0) {
+ wpa_s->last_scan_full = 1;
+ break;
+ }
+ }
+ }
+ }
+
dl_list_for_each_safe(bss, n, &wpa_s->bss, struct wpa_bss, list) {
if (wpa_bss_in_use(wpa_s, bss))
continue;
wpa_bss_remove(wpa_s, bss, "no match in scan");
}
}
+
+ wpa_printf(MSG_DEBUG, "BSS: last_scan_res_used=%u/%u "
+ "last_scan_full=%d",
+ wpa_s->last_scan_res_used, wpa_s->last_scan_res_size,
+ wpa_s->last_scan_full);
}
}
+struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss,
+ u32 vendor_type)
+{
+ struct wpabuf *buf;
+ const u8 *end, *pos;
+
+ buf = wpabuf_alloc(bss->beacon_ie_len);
+ if (buf == NULL)
+ return NULL;
+
+ pos = (const u8 *) (bss + 1);
+ pos += bss->ie_len;
+ end = pos + bss->beacon_ie_len;
+
+ while (pos + 1 < end) {
+ if (pos + 2 + pos[1] > end)
+ break;
+ if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
+ vendor_type == WPA_GET_BE32(&pos[2]))
+ wpabuf_put_data(buf, pos + 2 + 4, pos[1] - 4);
+ pos += 2 + pos[1];
+ }
+
+ if (wpabuf_len(buf) == 0) {
+ wpabuf_free(buf);
+ buf = NULL;
+ }
+
+ return buf;
+}
+
+
int wpa_bss_get_max_rate(const struct wpa_bss *bss)
{
int rate = 0;
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