api: enforce vla is last and fixed string type

Enforce that variable length fields are the last element of API messages.

Add a 'fixed' version of string type, since dealing with
multiple variable length strings turned out too painful
for the C language bindings.

The string type is now:
{
  string name[64]; // NUL terminated C-string. Essentially decays to u8 name[64]
  string name[];   // Variable length string with embedded len field (vl_api_string_t)
};

The latter notation could be made available to other types as well.
e.g.
{
  vl_api_address_t addresses[];
}
instead of

{
  u32 n_addr;
  vl_api_address_t addresses[n_addr];
};

Type: fix
Change-Id: I18fa17ef47227633752ab50453e8d20a652a9f9b
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/plugins/http_static/http_static.api b/src/plugins/http_static/http_static.api
index dc3dcac71ba..4d6d8bfe9b5 100644
--- a/src/plugins/http_static/http_static.api
+++ b/src/plugins/http_static/http_static.api
@@ -2,7 +2,7 @@
 /** \file
     This file defines static http server control-plane API messages
 */
-option version = "2.0.0";
+option version = "2.1.0";
 
 /** \brief Configure and enable the static http server
     @param client_index - opaque cookie to identify the sender
@@ -29,7 +29,7 @@ autoreply define http_static_enable {
     u32 private_segment_size;
 
     /* Root of the html path */
-    string www_root[limit=256];
+    string www_root[256];
     /* The bind URI */
-    string uri[limit=256];
+    string uri[256];
 };