API: Add support for type aliases

Previously all types are compound. This adds support for aliases,
so one can do things like:

typedef u32 interface_index;

or
typedef u8 ip4_address[4];

Change-Id: I0455cad0123fc88acb491d2a3ea2725426bdb246
Signed-off-by: Ole Troan <ot@cisco.com>
Signed-off-by: Klement Sekera <ksekera@cisco.com>

3 files changed, 43 insertions, 6 deletions

diff --git a/src/vnet/interface.api b/src/vnet/interface.api
index 2010d8b5f54..84e0483df67 100644
--- a/src/vnet/interface.api
+++ b/src/vnet/interface.api
@@ -1,5 +1,23 @@
+/* Hey Emacs use -*- mode: C -*- */
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 option version = "2.2.0";
 
+import "vnet/interface_types.api";
+
 service {
   rpc want_interface_events returns want_interface_events_reply
     events sw_interface_event;
diff --git a/src/vnet/interface_types.api b/src/vnet/interface_types.api
new file mode 100644
index 00000000000..f6fb4219ef8
--- /dev/null
+++ b/src/vnet/interface_types.api
@@ -0,0 +1,18 @@
+/* Hey Emacs use -*- mode: C -*- */
+/*
+ * Copyright (c) 2018 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+typedef u32 interface_index;
+
diff --git a/src/vnet/ipip/ipip.api b/src/vnet/ipip/ipip.api
index 5cad28f2814..3dc087c954f 100644
--- a/src/vnet/ipip/ipip.api
+++ b/src/vnet/ipip/ipip.api
@@ -49,6 +49,7 @@
  */
 
 option version = "1.1.0";
+import "vnet/interface_types.api";
 
 /**
  * Create an IP{v4,v6} over IP{v4,v6} tunnel.
@@ -70,7 +71,7 @@ define ipip_add_tunnel_reply
 {
   u32 context;
   i32 retval;
-  u32 sw_if_index;
+  vl_api_interface_index_t sw_if_index;
 };
 
 /**
@@ -80,7 +81,7 @@ autoreply define ipip_del_tunnel
 {
   u32 client_index;
   u32 context;
-  u32 sw_if_index;
+  vl_api_interface_index_t sw_if_index;
 };
 
 /**
@@ -106,7 +107,7 @@ define ipip_6rd_add_tunnel_reply
 {
   u32 context;
   i32 retval;
-  u32 sw_if_index;
+  vl_api_interface_index_t sw_if_index;
 };
 
 /**
@@ -116,7 +117,7 @@ autoreply define ipip_6rd_del_tunnel
 {
   u32 client_index;
   u32 context;
-  u32 sw_if_index;
+  vl_api_interface_index_t sw_if_index;
 };
 
 /**
@@ -126,13 +127,13 @@ define ipip_tunnel_dump
 {
   u32 client_index;
   u32 context;
-  u32 sw_if_index;
+  vl_api_interface_index_t sw_if_index;
 };
 
 define ipip_tunnel_details
 {
   u32 context;
-  u32 sw_if_index;
+  vl_api_interface_index_t sw_if_index;
   u32 instance;
   u8 is_ipv6;
   u8 src_address[16];