1 files changed, 51 insertions, 1 deletions

diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 0d964160a9dd..fac01b80a104 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -491,13 +491,16 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
 	}
 
 	dst_hold(dst);
-	dst = xfrm_lookup(t->net, dst, fl, NULL, 0);
+	dst = xfrm_lookup_route(t->net, dst, fl, NULL, 0);
 	if (IS_ERR(dst)) {
 		err = PTR_ERR(dst);
 		dst = NULL;
 		goto tx_err_link_failure;
 	}
 
+	if (dst->flags & DST_XFRM_QUEUE)
+		goto queued;
+
 	x = dst->xfrm;
 	if (!vti6_state_check(x, &t->parms.raddr, &t->parms.laddr))
 		goto tx_err_link_failure;
@@ -533,6 +536,7 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
 		goto tx_err_dst_release;
 	}
 
+queued:
 	skb_scrub_packet(skb, !net_eq(t->net, dev_net(dev)));
 	skb_dst_set(skb, dst);
 	skb->dev = skb_dst(skb)->dev;
@@ -1219,6 +1223,33 @@ static struct xfrm6_protocol vti_ipcomp6_protocol __read_mostly = {
 	.priority	=	100,
 };
 
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+static int vti6_rcv_tunnel(struct sk_buff *skb)
+{
+	const xfrm_address_t *saddr;
+	__be32 spi;
+
+	saddr = (const xfrm_address_t *)&ipv6_hdr(skb)->saddr;
+	spi = xfrm6_tunnel_spi_lookup(dev_net(skb->dev), saddr);
+
+	return vti6_input_proto(skb, IPPROTO_IPV6, spi, 0);
+}
+
+static struct xfrm6_tunnel vti_ipv6_handler __read_mostly = {
+	.handler	=	vti6_rcv_tunnel,
+	.cb_handler	=	vti6_rcv_cb,
+	.err_handler	=	vti6_err,
+	.priority	=	0,
+};
+
+static struct xfrm6_tunnel vti_ip6ip_handler __read_mostly = {
+	.handler	=	vti6_rcv_tunnel,
+	.cb_handler	=	vti6_rcv_cb,
+	.err_handler	=	vti6_err,
+	.priority	=	0,
+};
+#endif
+
 /**
  * vti6_tunnel_init - register protocol and reserve needed resources
  *
@@ -1244,6 +1275,15 @@ static int __init vti6_tunnel_init(void)
 	err = xfrm6_protocol_register(&vti_ipcomp6_protocol, IPPROTO_COMP);
 	if (err < 0)
 		goto xfrm_proto_comp_failed;
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+	msg = "ipv6 tunnel";
+	err = xfrm6_tunnel_register(&vti_ipv6_handler, AF_INET6);
+	if (err < 0)
+		goto vti_tunnel_ipv6_failed;
+	err = xfrm6_tunnel_register(&vti_ip6ip_handler, AF_INET);
+	if (err < 0)
+		goto vti_tunnel_ip6ip_failed;
+#endif
 
 	msg = "netlink interface";
 	err = rtnl_link_register(&vti6_link_ops);
@@ -1253,6 +1293,12 @@ static int __init vti6_tunnel_init(void)
 	return 0;
 
 rtnl_link_failed:
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+	err = xfrm6_tunnel_deregister(&vti_ip6ip_handler, AF_INET);
+vti_tunnel_ip6ip_failed:
+	err = xfrm6_tunnel_deregister(&vti_ipv6_handler, AF_INET6);
+vti_tunnel_ipv6_failed:
+#endif
 	xfrm6_protocol_deregister(&vti_ipcomp6_protocol, IPPROTO_COMP);
 xfrm_proto_comp_failed:
 	xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH);
@@ -1271,6 +1317,10 @@ pernet_dev_failed:
 static void __exit vti6_tunnel_cleanup(void)
 {
 	rtnl_link_unregister(&vti6_link_ops);
+#if IS_REACHABLE(CONFIG_INET6_XFRM_TUNNEL)
+	xfrm6_tunnel_deregister(&vti_ip6ip_handler, AF_INET);
+	xfrm6_tunnel_deregister(&vti_ipv6_handler, AF_INET6);
+#endif
 	xfrm6_protocol_deregister(&vti_ipcomp6_protocol, IPPROTO_COMP);
 	xfrm6_protocol_deregister(&vti_ah6_protocol, IPPROTO_AH);
 	xfrm6_protocol_deregister(&vti_esp6_protocol, IPPROTO_ESP);