emacs-skeleton: improve generated .api files

Type cleanups:
  s/u8/bool/ for "enable_disable"
  s/u32/vl_api_interface_index_t/ for "sw_if_index"

Add an API version stamp.
Add a doxygen tag for the binary API.
Add Apache-2 licence text.

Change-Id: I2fa168336efb0f1d9b9b6dec945589cbc5fd5595
Signed-off-by: Dave Barach <dave@barachs.net>

3 files changed, 58 insertions, 29 deletions

diff --git a/extras/emacs/plugin-api-skel.el b/extras/emacs/plugin-api-skel.el
index 74519e70d83..f776ce2a44c 100644
--- a/extras/emacs/plugin-api-skel.el
+++ b/extras/emacs/plugin-api-skel.el
@@ -21,10 +21,45 @@ nil
 '(if (not (boundp 'plugin-name))
      (setq plugin-name (read-string "Plugin name: ")))
 '(setq PLUGIN-NAME (upcase plugin-name))
-"
-/* Define a simple enable-disable binary API to control the feature */
+"/*
+ * " plugin-name ".api - binary API skeleton
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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.
+ */
 
-define " plugin-name "_enable_disable {
+/**
+ * @file " plugin-name ".api
+ * @brief VPP control-plane API messages.
+ *
+ * This file defines VPP control-plane binary API messages which are generally
+ * called through a shared memory interface.
+ */
+
+/* Version and type recitations */
+
+option version = \"0.1.0\";
+import \"vnet/interface_types.api\";
+
+
+/** @brief API to enable / disable " plugin-name " on an interface
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+    @param enable_disable - 1 to enable, 0 to disable the feature
+    @param sw_if_index - interface handle
+*/
+
+autoreply define " plugin-name "_enable_disable {
     /* Client identifier, set from api_main.my_client_index */
     u32 client_index;
 
@@ -32,17 +67,9 @@ define " plugin-name "_enable_disable {
     u32 context;
 
     /* Enable / disable the feature */
-    u8 enable_disable;
+    bool enable_disable;
 
     /* Interface handle */
-    u32 sw_if_index;
-};
-
-define " plugin-name "_enable_disable_reply {
-    /* From the request */
-    u32 context;
-
-    /* Return value, zero means all OK */
-    i32 retval;
+    vl_api_interface_index_t sw_if_index;
 };
 ")
diff --git a/extras/emacs/plugin-main-skel.el b/extras/emacs/plugin-main-skel.el
index 873f72da39d..632a1329c2d 100644
--- a/extras/emacs/plugin-main-skel.el
+++ b/extras/emacs/plugin-main-skel.el
@@ -47,6 +47,7 @@ nil
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
 #include <vpp/app/version.h>
+#include <stdbool.h>
 
 /* define message IDs */
 #include <" plugin-name "/" plugin-name "_msg_enum.h>
diff --git a/extras/emacs/plugin-test-skel.el b/extras/emacs/plugin-test-skel.el
index 1de1b9861af..6357a3d7d4d 100644
--- a/extras/emacs/plugin-test-skel.el
+++ b/extras/emacs/plugin-test-skel.el
@@ -24,7 +24,7 @@ nil
 '(setq capital-oh-en "ON")
 '(setq main-p (concat (substring plugin-name 0 1) "tmp"))
 "/*
- * " plugin-name ".c - skeleton vpp-api-test plug-in 
+ * " plugin-name ".c - skeleton vpp-api-test plug-in
  *
  * Copyright (c) <current-year> <your-organization>
  * Licensed under the Apache License, Version 2.0 (the \"License\");
@@ -43,6 +43,7 @@ nil
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
 #include <vppinfra/error.h>
+#include <stdbool.h>
 
 uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
 
@@ -51,19 +52,19 @@ uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
 
 /* define message structures */
 #define vl_typedefs
-#include <" plugin-name "/" plugin-name "_all_api_h.h> 
+#include <" plugin-name "/" plugin-name "_all_api_h.h>
 #undef vl_typedefs
 
 /* declare message handlers for each api */
 
 #define vl_endianfun             /* define message structures */
-#include <" plugin-name "/" plugin-name "_all_api_h.h> 
+#include <" plugin-name "/" plugin-name "_all_api_h.h>
 #undef vl_endianfun
 
 /* instantiate all the print functions we know about */
 #define vl_print(handle, ...)
 #define vl_printfun
-#include <" plugin-name "/" plugin-name "_all_api_h.h> 
+#include <" plugin-name "/" plugin-name "_all_api_h.h>
 #undef vl_printfun
 
 /* Get the API version number. */
@@ -72,7 +73,7 @@ uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
 #undef vl_api_version
 
 
-typedef struct 
+typedef struct
 {
   /* API message ID base */
   u16 msg_id_base;
@@ -103,7 +104,7 @@ _(" plugin-name "_enable_disable_reply)
 foreach_standard_reply_retval_handler;
 #undef _
 
-/* 
+/*
  * Table of message reply handlers, must include boilerplate handlers
  * we just generated
  */
@@ -120,7 +121,7 @@ static int api_" plugin-name "_enable_disable (vat_main_t * vam)
   int ret;
 
   /* Parse args required to build the message */
-  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT) 
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (i, \"%U\", unformat_sw_if_index, vam, &sw_if_index))
           ;
@@ -131,13 +132,13 @@ static int api_" plugin-name "_enable_disable (vat_main_t * vam)
       else
           break;
     }
-  
-  if (sw_if_index == ~0) 
+
+  if (sw_if_index == ~0)
     {
       errmsg (\"missing interface name / explicit sw_if_index number \\n\");
       return -99;
     }
-  
+
   /* Construct the API message */
   M(" PLUGIN-NAME "_ENABLE_DISABLE, mp);
   mp->sw_if_index = ntohl (sw_if_index);
@@ -151,7 +152,7 @@ static int api_" plugin-name "_enable_disable (vat_main_t * vam)
   return ret;
 }
 
-/* 
+/*
  * List of messages that the api test plugin sends,
  * and that the data plane plugin processes
  */
@@ -169,15 +170,15 @@ static void " plugin-name "_api_hookup (vat_main_t *vam)
                            vl_noop_handler,                     \\
                            vl_api_##n##_t_endian,               \\
                            vl_api_##n##_t_print,                \\
-                           sizeof(vl_api_##n##_t), 1); 
+                           sizeof(vl_api_##n##_t), 1);
     foreach_vpe_api_reply_msg;
 #undef _
 
     /* API messages we can send */
 #define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
     foreach_vpe_api_msg;
-#undef _    
-    
+#undef _
+
     /* Help strings */
 #define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
     foreach_vpe_api_msg;
@@ -197,9 +198,9 @@ clib_error_t * vat_plugin_register (vat_main_t *vam)
 
   if (" main-p "->msg_id_base != (u16) ~0)
     " plugin-name "_api_hookup (vam);
-  
+
   vec_free(name);
-  
+
   return 0;
 }
 /*