ipw2200: expire and use oldest BSS on adhoc create

[linux-2.6-omap-h63xx.git] / drivers / net / wireless / ipw2200.c

diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index d74c061994ae02a37c73a97fc7f8d79b665b343f..7293367748280d09426371f7647d4c8c496b824d 100644 (file)
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -7558,8 +7558,31 @@ static int ipw_associate(void *data)
            priv->ieee->iw_mode == IW_MODE_ADHOC &&
            priv->config & CFG_ADHOC_CREATE &&
            priv->config & CFG_STATIC_ESSID &&
-           priv->config & CFG_STATIC_CHANNEL &&
-           !list_empty(&priv->ieee->network_free_list)) {
+           priv->config & CFG_STATIC_CHANNEL) {
+               /* Use oldest network if the free list is empty */
+               if (list_empty(&priv->ieee->network_free_list)) {
+                       struct ieee80211_network *oldest = NULL;
+                       struct ieee80211_network *target;
+                       DECLARE_MAC_BUF(mac);
+
+                       list_for_each_entry(target, &priv->ieee->network_list, list) {
+                               if ((oldest == NULL) ||
+                                   (target->last_scanned < oldest->last_scanned))
+                                       oldest = target;
+                       }
+
+                       /* If there are no more slots, expire the oldest */
+                       list_del(&oldest->list);
+                       target = oldest;
+                       IPW_DEBUG_ASSOC("Expired '%s' (%s) from "
+                                       "network list.\n",
+                                       escape_essid(target->ssid,
+                                                    target->ssid_len),
+                                       print_mac(mac, target->bssid));
+                       list_add_tail(&target->list,
+                                     &priv->ieee->network_free_list);
+               }
+
                element = priv->ieee->network_free_list.next;
                network = list_entry(element, struct ieee80211_network, list);
                ipw_adhoc_create(priv, network);