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-rw-r--r--net/l2tp/l2tp_core.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index d36875f3427e..ee726a752292 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1282,6 +1282,7 @@ static void l2tp_tunnel_destruct(struct sock *sk)
/* No longer an encapsulation socket. See net/ipv4/udp.c */
(udp_sk(sk))->encap_type = 0;
(udp_sk(sk))->encap_rcv = NULL;
+ (udp_sk(sk))->encap_destroy = NULL;
break;
case L2TP_ENCAPTYPE_IP:
break;
@@ -1360,6 +1361,8 @@ again:
if (session->deref != NULL)
(*session->deref)(session);
+ l2tp_session_dec_refcount(session);
+
write_lock_bh(&tunnel->hlist_lock);
/* Now restart from the beginning of this hash
@@ -1373,6 +1376,16 @@ again:
write_unlock_bh(&tunnel->hlist_lock);
}
+/* Tunnel socket destroy hook for UDP encapsulation */
+static void l2tp_udp_encap_destroy(struct sock *sk)
+{
+ struct l2tp_tunnel *tunnel = l2tp_sock_to_tunnel(sk);
+ if (tunnel) {
+ l2tp_tunnel_closeall(tunnel);
+ sock_put(sk);
+ }
+}
+
/* Really kill the tunnel.
* Come here only when all sessions have been cleared from the tunnel.
*/
@@ -1668,6 +1681,7 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32
/* Mark socket as an encapsulation socket. See net/ipv4/udp.c */
udp_sk(sk)->encap_type = UDP_ENCAP_L2TPINUDP;
udp_sk(sk)->encap_rcv = l2tp_udp_encap_recv;
+ udp_sk(sk)->encap_destroy = l2tp_udp_encap_destroy;
#if IS_ENABLED(CONFIG_IPV6)
if (sk->sk_family == PF_INET6)
udpv6_encap_enable();