l2tp: don't export l2tp_session_queue_purge()

This function is only used in l2tp_core.c.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/l2tp/l2tp_core.c

@@ -783,7 +783,7 @@ EXPORT_SYMBOL(l2tp_recv_common);
 
 /* Drop skbs from the session's reorder_q
  */
-int l2tp_session_queue_purge(struct l2tp_session *session)
+static int l2tp_session_queue_purge(struct l2tp_session *session)
 {
 	struct sk_buff *skb = NULL;
 	BUG_ON(!session);
@@ -794,7 +794,6 @@ int l2tp_session_queue_purge(struct l2tp_session *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.

net/l2tp/l2tp_core.h

@@ -234,7 +234,6 @@ void l2tp_session_free(struct l2tp_session *session);
 void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
 		      unsigned char *ptr, unsigned char *optr, u16 hdrflags,
 		      int length, int (*payload_hook)(struct sk_buff *skb));
-int l2tp_session_queue_purge(struct l2tp_session *session);
 int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb);
 void l2tp_session_set_header_len(struct l2tp_session *session, int version);