xfrm: interface: not xfrmi_ipv6/ipip_handler twice

As we did in the last 2 patches for vti(6), this patch is to define a
new xfrm_tunnel object 'xfrmi_ipip6_handler' to register for AF_INET6,
and a new xfrm6_tunnel object 'xfrmi_ip6ip_handler' to register for
AF_INET.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

net/xfrm/xfrm_interface.c

@@ -830,6 +830,13 @@ static struct xfrm6_tunnel xfrmi_ipv6_handler __read_mostly = {
 	.err_handler	=	xfrmi6_err,
 	.priority	=	-1,
 };
+
+static struct xfrm6_tunnel xfrmi_ip6ip_handler __read_mostly = {
+	.handler	=	xfrmi6_rcv_tunnel,
+	.cb_handler	=	xfrmi_rcv_cb,
+	.err_handler	=	xfrmi6_err,
+	.priority	=	-1,
+};
 #endif
 
 static struct xfrm4_protocol xfrmi_esp4_protocol __read_mostly = {
@@ -868,6 +875,13 @@ static struct xfrm_tunnel xfrmi_ipip_handler __read_mostly = {
 	.err_handler	=	xfrmi4_err,
 	.priority	=	-1,
 };
+
+static struct xfrm_tunnel xfrmi_ipip6_handler __read_mostly = {
+	.handler	=	xfrmi4_rcv_tunnel,
+	.cb_handler	=	xfrmi_rcv_cb,
+	.err_handler	=	xfrmi4_err,
+	.priority	=	-1,
+};
 #endif
 
 static int __init xfrmi4_init(void)
@@ -887,7 +901,7 @@ static int __init xfrmi4_init(void)
 	err = xfrm4_tunnel_register(&xfrmi_ipip_handler, AF_INET);
 	if (err < 0)
 		goto xfrm_tunnel_ipip_failed;
-	err = xfrm4_tunnel_register(&xfrmi_ipip_handler, AF_INET6);
+	err = xfrm4_tunnel_register(&xfrmi_ipip6_handler, AF_INET6);
 	if (err < 0)
 		goto xfrm_tunnel_ipip6_failed;
 #endif
@@ -911,7 +925,7 @@ static int __init xfrmi4_init(void)
 static void xfrmi4_fini(void)
 {
 #if IS_ENABLED(CONFIG_INET_XFRM_TUNNEL)
-	xfrm4_tunnel_deregister(&xfrmi_ipip_handler, AF_INET6);
+	xfrm4_tunnel_deregister(&xfrmi_ipip6_handler, AF_INET6);
 	xfrm4_tunnel_deregister(&xfrmi_ipip_handler, AF_INET);
 #endif
 	xfrm4_protocol_deregister(&xfrmi_ipcomp4_protocol, IPPROTO_COMP);
@@ -936,7 +950,7 @@ static int __init xfrmi6_init(void)
 	err = xfrm6_tunnel_register(&xfrmi_ipv6_handler, AF_INET6);
 	if (err < 0)
 		goto xfrm_tunnel_ipv6_failed;
-	err = xfrm6_tunnel_register(&xfrmi_ipv6_handler, AF_INET);
+	err = xfrm6_tunnel_register(&xfrmi_ip6ip_handler, AF_INET);
 	if (err < 0)
 		goto xfrm_tunnel_ip6ip_failed;
 #endif
@@ -960,7 +974,7 @@ static int __init xfrmi6_init(void)
 static void xfrmi6_fini(void)
 {
 #if IS_ENABLED(CONFIG_INET6_XFRM_TUNNEL)
-	xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET);
+	xfrm6_tunnel_deregister(&xfrmi_ip6ip_handler, AF_INET);
 	xfrm6_tunnel_deregister(&xfrmi_ipv6_handler, AF_INET6);
 #endif
 	xfrm6_protocol_deregister(&xfrmi_ipcomp6_protocol, IPPROTO_COMP);