IPIP tunnel: use address types on API

Change-Id: Ida6a8f96bd858246e993250087bed45e7084ede1
Signed-off-by: Neale Ranns <nranns@cisco.com>

4 files changed, 73 insertions, 68 deletions

diff --git a/src/vnet/ipip/ipip.api b/src/vnet/ipip/ipip.api
index 3dc087c954f..e8051fde7f8 100644
--- a/src/vnet/ipip/ipip.api
+++ b/src/vnet/ipip/ipip.api
@@ -1,3 +1,4 @@
+/* Hey Emacs use -*- mode: C -*- */
 /*
  * Copyright (c) 2018 Cisco and/or its affiliates.
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -48,8 +49,23 @@
  *
  */
 
-option version = "1.1.0";
+option version = "1.2.0";
 import "vnet/interface_types.api";
+import "vnet/ip/ip_types.api";
+
+/**
+ * An IP{v4,v6} over IP{v4,v6} tunnel.
+ */
+typedef ipip_tunnel
+{
+  u32 instance;		/* If non-~0, specifies a custom dev instance */
+  vl_api_address_t src;
+  vl_api_address_t dst;
+  u32 sw_if_index; /* ignored on create, set in details/dump */
+u32 table_id;
+  u8 tc_tos;		/* If ~0, the TOS/TC value is copied from
+			   inner packet, otherwise set to value */
+};
 
 /**
  * Create an IP{v4,v6} over IP{v4,v6} tunnel.
@@ -58,13 +74,7 @@ define ipip_add_tunnel
 {
   u32 client_index;
   u32 context;
-  u8 is_ipv6;
-  u32 instance;		/* If non-~0, specifies a custom dev instance */
-  u8 src_address[16];
-  u8 dst_address[16];
-  u32 table_id;
-  u8 tc_tos;		/* If ~0, the TOS/TC value is copied from
-			   inner packet, otherwise set to value */
+  vl_api_ipip_tunnel_t tunnel;
 };
 
 define ipip_add_tunnel_reply
@@ -133,13 +143,7 @@ define ipip_tunnel_dump
 define ipip_tunnel_details
 {
   u32 context;
-  vl_api_interface_index_t sw_if_index;
-  u32 instance;
-  u8 is_ipv6;
-  u8 src_address[16];
-  u8 dst_address[16];
-  u32 fib_index;
-  u8 tc_tos;
+  vl_api_ipip_tunnel_t tunnel;
 };
 
 /*
diff --git a/src/vnet/ipip/ipip_api.c b/src/vnet/ipip/ipip_api.c
index 2abac0b9772..f97aaf78bd4 100644
--- a/src/vnet/ipip/ipip_api.c
+++ b/src/vnet/ipip/ipip_api.c
@@ -22,6 +22,7 @@
 #include <vnet/ipip/ipip.h>
 #include <vnet/vnet.h>
 #include <vnet/vnet_msg_enum.h>
+#include <vnet/ip/ip_types_api.h>
 
 #define vl_typedefs		/* define message structures */
 #include <vnet/vnet_all_api_h.h>
@@ -52,23 +53,26 @@ vl_api_ipip_add_tunnel_t_handler (vl_api_ipip_add_tunnel_t * mp)
   vl_api_ipip_add_tunnel_reply_t *rmp;
   int rv = 0;
   u32 fib_index, sw_if_index = ~0;
-  ip46_address_t src = ip46_address_initializer, dst =
-    ip46_address_initializer;
+  ip46_address_t src, dst;
+  ip46_type_t itype[2];
 
-  /* ip addresses sent in network byte order */
-  if (mp->is_ipv6)
+  itype[0] = ip_address_decode (&mp->tunnel.src, &src);
+  itype[1] = ip_address_decode (&mp->tunnel.dst, &dst);
+
+  if (itype[0] != itype[1])
     {
-      clib_memcpy (&src.ip6, mp->src_address, 16);
-      clib_memcpy (&dst.ip6, mp->dst_address, 16);
+      rv = VNET_API_ERROR_INVALID_PROTOCOL;
+      goto out;
     }
-  else
+
+  if (ip46_address_is_equal (&src, &dst))
     {
-      clib_memcpy (&src.ip4, mp->src_address, 4);
-      clib_memcpy (&dst.ip4, mp->dst_address, 4);
+      rv = VNET_API_ERROR_SAME_SRC_DST;
+      goto out;
     }
 
-  fib_index =
-    fib_table_find (fib_ip_proto (mp->is_ipv6), ntohl (mp->table_id));
+  fib_index = fib_table_find (fib_proto_from_ip46 (itype[0]),
+			      ntohl (mp->tunnel.table_id));
 
   if (~0 == fib_index)
     {
@@ -76,13 +80,14 @@ vl_api_ipip_add_tunnel_t_handler (vl_api_ipip_add_tunnel_t * mp)
     }
   else
     {
-      rv = ipip_add_tunnel ((mp->is_ipv6 ?
+      rv = ipip_add_tunnel ((itype[0] == IP46_TYPE_IP6 ?
 			     IPIP_TRANSPORT_IP6 :
 			     IPIP_TRANSPORT_IP4),
-			    ntohl (mp->instance), &src, &dst,
-			    fib_index, mp->tc_tos, &sw_if_index);
+			    ntohl (mp->tunnel.instance), &src, &dst,
+			    fib_index, mp->tunnel.tc_tos, &sw_if_index);
     }
 
+out:
   /* *INDENT-OFF* */
   REPLY_MACRO2(VL_API_IPIP_ADD_TUNNEL_REPLY,
   ({
@@ -112,24 +117,17 @@ send_ipip_tunnel_details (ipip_tunnel_t * t,
   rmp = vl_msg_api_alloc (sizeof (*rmp));
   clib_memset (rmp, 0, sizeof (*rmp));
   rmp->_vl_msg_id = htons (VL_API_IPIP_TUNNEL_DETAILS);
-  if (is_ipv6)
-    {
-      clib_memcpy (rmp->src_address, &t->tunnel_src.ip6.as_u8, 16);
-      clib_memcpy (rmp->dst_address, &t->tunnel_dst.ip6.as_u8, 16);
-      ft = fib_table_get (t->fib_index, FIB_PROTOCOL_IP6);
-      rmp->fib_index = htonl (ft->ft_table_id);
-    }
-  else
-    {
-      clib_memcpy (rmp->src_address, &t->tunnel_src.ip4.as_u8, 4);
-      clib_memcpy (rmp->dst_address, &t->tunnel_dst.ip4.as_u8, 4);
-      ft = fib_table_get (t->fib_index, FIB_PROTOCOL_IP4);
-      rmp->fib_index = htonl (ft->ft_table_id);
-    }
-  rmp->instance = htonl (t->user_instance);
-  rmp->sw_if_index = htonl (t->sw_if_index);
+
+  ip_address_encode (&t->tunnel_src, IP46_TYPE_ANY, &rmp->tunnel.src);
+  ip_address_encode (&t->tunnel_dst, IP46_TYPE_ANY, &rmp->tunnel.dst);
+
+  ft = fib_table_get (t->fib_index, (is_ipv6 ? FIB_PROTOCOL_IP6 :
+				     FIB_PROTOCOL_IP4));
+
+  rmp->tunnel.table_id = htonl (ft->ft_table_id);
+  rmp->tunnel.instance = htonl (t->user_instance);
+  rmp->tunnel.sw_if_index = htonl (t->sw_if_index);
   rmp->context = context;
-  rmp->is_ipv6 = is_ipv6;
 
   vl_api_send_msg (reg, (u8 *) rmp);
 }
diff --git a/test/test_ipip.py b/test/test_ipip.py
index 137e3c54dff..6f1d3b883c0 100644
--- a/test/test_ipip.py
+++ b/test/test_ipip.py
@@ -17,6 +17,19 @@ IPIP tests.
 """
 
 
+def ipip_add_tunnel(test, src, dst, table_id=0, tc_tos=0xff):
+    """ Add a IPIP tunnel """
+    return test.vapi.ipip_add_tunnel(
+        tunnel={
+            'src': src,
+            'dst': dst,
+            'table_id': table_id,
+            'instance': 0xffffffff,
+            'tc_tos': tc_tos
+        }
+    )
+
+
 class TestIPIP(VppTestCase):
     """ IPIP Test Case """
 
@@ -71,10 +84,10 @@ class TestIPIP(VppTestCase):
         p_payload = UDP(sport=1234, dport=1234)
 
         # IPv4 transport
-        rv = self.vapi.ipip_add_tunnel(
-            src_address=self.pg0.local_ip4n,
-            dst_address=self.pg1.remote_ip4n,
-            is_ipv6=0, tc_tos=0xFF)
+        rv = ipip_add_tunnel(self,
+                             self.pg0.local_ip4,
+                             self.pg1.remote_ip4,
+                             tc_tos=0xFF)
         sw_if_index = rv.sw_if_index
 
         # Set interface up and enable IP on it
@@ -226,9 +239,7 @@ class TestIPIP(VppTestCase):
 
     def test_ipip_create(self):
         """ ipip create / delete interface test """
-        rv = self.vapi.ipip_add_tunnel(
-            src_address=inet_pton(AF_INET, '1.2.3.4'),
-            dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0)
+        rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5')
         sw_if_index = rv.sw_if_index
         self.vapi.ipip_del_tunnel(sw_if_index)
 
@@ -237,10 +248,7 @@ class TestIPIP(VppTestCase):
 
         t = VppIpTable(self, 20)
         t.add_vpp_config()
-        rv = self.vapi.ipip_add_tunnel(
-            src_address=inet_pton(AF_INET, '1.2.3.4'),
-            dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0,
-            table_id=20)
+        rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5', table_id=20)
         sw_if_index = rv.sw_if_index
         self.vapi.ipip_del_tunnel(sw_if_index)
 
@@ -283,9 +291,10 @@ class TestIPIP6(VppTestCase):
 
     def setup_tunnel(self):
         # IPv6 transport
-        rv = self.vapi.ipip_add_tunnel(
-            src_address=self.pg0.local_ip6n,
-            dst_address=self.pg1.remote_ip6n, tc_tos=255)
+        rv = ipip_add_tunnel(self,
+                             self.pg0.local_ip6,
+                             self.pg1.remote_ip6,
+                             tc_tos=255)
 
         sw_if_index = rv.sw_if_index
         self.tunnel_if_index = sw_if_index
@@ -502,9 +511,7 @@ class TestIPIP6(VppTestCase):
 
     def test_ipip_create(self):
         """ ipip create / delete interface test """
-        rv = self.vapi.ipip_add_tunnel(
-            src_address=inet_pton(AF_INET, '1.2.3.4'),
-            dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0)
+        rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5')
         sw_if_index = rv.sw_if_index
         self.vapi.ipip_del_tunnel(sw_if_index)
 
@@ -513,10 +520,7 @@ class TestIPIP6(VppTestCase):
 
         t = VppIpTable(self, 20)
         t.add_vpp_config()
-        rv = self.vapi.ipip_add_tunnel(
-            src_address=inet_pton(AF_INET, '1.2.3.4'),
-            dst_address=inet_pton(AF_INET, '2.3.4.5'), is_ipv6=0,
-            table_id=20)
+        rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5', table_id=20)
         sw_if_index = rv.sw_if_index
         self.vapi.ipip_del_tunnel(sw_if_index)
 
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 8084a7ffd8d..f32a5a848a3 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -69,7 +69,6 @@ defaultmapping = {
     'ip_punt_redirect': {'is_add': 1, },
     'ip_table_add_del': {'is_add': 1, },
     'ip_unnumbered_dump': {'sw_if_index': 4294967295, },
-    'ipip_add_tunnel': {'is_ipv6': 1, 'instance': 4294967295, },
     'ipsec_interface_add_del_spd': {'is_add': 1, },
     'ipsec_sad_entry_add_del': {'is_add': 1, },
     'ipsec_spd_add_del': {'is_add': 1, },