l2tp: add session reorder queue purge function to core

[pandora-kernel.git] / net / l2tp / l2tp_core.c

diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 5fa9068..4b727a6 100644 (file)
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -830,6 +830,23 @@ discard:
 }
 EXPORT_SYMBOL(l2tp_recv_common);
 
+/* Drop skbs from the session's reorder_q
+ */
+int l2tp_session_queue_purge(struct l2tp_session *session)
+{
+       struct sk_buff *skb = NULL;
+       BUG_ON(!session);
+       BUG_ON(session->magic != L2TP_SESSION_MAGIC);
+       while ((skb = skb_dequeue(&session->reorder_q))) {
+               session->stats.rx_errors++;
+               kfree_skb(skb);
+               if (session->deref)
+                       (*session->deref)(session);
+       }
+       return 0;
+}
+EXPORT_SYMBOL_GPL(l2tp_session_queue_purge);
+
 /* Internal UDP receive frame. Do the real work of receiving an L2TP data frame
  * here. The skb is not on a list when we get here.
  * Returns 0 if the packet was a data packet and was successfully passed on.