NDIS: Set authMode=WPA2, if needed, when flushing PMKID cache

Some drivers may refuse OID_802_11_PMKID if authMode is not set to WPA2,
so let's set it temporarily, if needed, when flushing PMKID cache.

diff --git a/src/drivers/driver_ndis.c b/src/drivers/driver_ndis.c
index f55bd2e..074f950 100644 (file)
--- a/src/drivers/driver_ndis.c
+++ b/src/drivers/driver_ndis.c
@@ -1177,6 +1177,7 @@ static int wpa_driver_ndis_flush_pmkid(void *priv)
        struct wpa_driver_ndis_data *drv = priv;
        NDIS_802_11_PMKID p;
        struct ndis_pmkid_entry *pmkid, *prev;
+       int prev_authmode, ret;
 
        if (drv->no_of_pmkid == 0)
                return 0;
@@ -1189,12 +1190,25 @@ static int wpa_driver_ndis_flush_pmkid(void *priv)
                os_free(prev);
        }
 
+       /*
+        * Some drivers may refuse OID_802_11_PMKID if authMode is not set to
+        * WPA2, so change authMode temporarily, if needed.
+        */
+       prev_authmode = ndis_get_auth_mode(drv);
+       if (prev_authmode != Ndis802_11AuthModeWPA2)
+               ndis_set_auth_mode(drv, Ndis802_11AuthModeWPA2);
+
        os_memset(&p, 0, sizeof(p));
        p.Length = 8;
        p.BSSIDInfoCount = 0;
        wpa_hexdump(MSG_MSGDUMP, "NDIS: OID_802_11_PMKID (flush)",
                    (char *) &p, 8);
-       return ndis_set_oid(drv, OID_802_11_PMKID, (char *) &p, 8);
+       ret = ndis_set_oid(drv, OID_802_11_PMKID, (char *) &p, 8);
+
+       if (prev_authmode != Ndis802_11AuthModeWPA2)
+               ndis_set_auth_mode(drv, prev_authmode);
+
+       return ret;
 }