Interworking: Store HESSID in BSS entry

This makes it more convenient to match BSS entries that belong to the
same homogenous ESS.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>

diff --git a/wpa_supplicant/bss.c b/wpa_supplicant/bss.c
index a999868..af2033f 100644 (file)
--- a/wpa_supplicant/bss.c
+++ b/wpa_supplicant/bss.c
@@ -35,6 +35,22 @@
 #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;
@@ -227,6 +243,7 @@ static struct wpa_bss * wpa_bss_add(struct wpa_supplicant *wpa_s,
        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);
@@ -407,6 +424,8 @@ static void wpa_bss_update(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
                }
                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);

diff --git a/wpa_supplicant/bss.h b/wpa_supplicant/bss.h
index 31ae3da..4a386b6 100644 (file)
--- a/wpa_supplicant/bss.h
+++ b/wpa_supplicant/bss.h
@@ -47,6 +47,7 @@ struct wpa_bss_anqp {
  * @flags: information flags about the BSS/IBSS (WPA_BSS_*)
  * @last_update_idx: Index of the last scan update
  * @bssid: BSSID
+ * @hessid: HESSID
  * @freq: frequency of the channel in MHz (e.g., 2412 = channel 1)
  * @beacon_int: beacon interval in TUs (host byte order)
  * @caps: capability information field in host byte order
@@ -69,6 +70,7 @@ struct wpa_bss {
        unsigned int last_update_idx;
        unsigned int flags;
        u8 bssid[ETH_ALEN];
+       u8 hessid[ETH_ALEN];
        u8 ssid[32];
        size_t ssid_len;
        int freq;