api: vat2 and json autogeneration for api messages

VAT2: A completely auto-generated replacement of VAT.
Reads input message in JSON from stdin and outputs received messages in JSON.

A VAT2 plugin is automatically built for a .api file.
There no longer a need for a separate _test.c.

Example:
vat2 show_version {}
{
        "_msgname":     "show_version_reply",
        "retval":       0,
        "program":      "vpe",
        "version":      "21.01-rc0~411-gf6eb348a6",
        "build_date":   "2020-11-19T09:49:25",
        "build_directory":      "/vpp/autogen3"
}

vat2 sw_interface_dump '{"sw_if_index": -1,
                         "name_filter_valid": 0,
                         "name_filter": ""}'
[{
                "_msgname":     "sw_interface_details",
                "sw_if_index":  0,
                "sup_sw_if_index":      0,
                "l2_address":   "00:00:00:00:00:00",
                "flags":        "Invalid ENUM",
                "type": "IF_API_TYPE_HARDWARE",
                "link_duplex":  "LINK_DUPLEX_API_UNKNOWN",
                "link_speed":   0,
                "link_mtu":     0,
                "mtu":  [0, 0, 0, 0],
                "sub_id":       0,
                "sub_number_of_tags":   0,
                "sub_outer_vlan_id":    0,
                "sub_inner_vlan_id":    0,
                "sub_if_flags": "Invalid ENUM",
                "vtr_op":       0,
                "vtr_push_dot1q":       0,
                "vtr_tag1":     0,
                "vtr_tag2":     0,
                "outer_tag":    0,
                "b_dmac":       "00:00:00:00:00:00",
                "b_smac":       "00:00:00:00:00:00",
                "b_vlanid":     0,
                "i_sid":        0,
                "interface_name":       "local0",
                "interface_dev_type":   "local",
                "tag":  ""
        }]

This is the first phase and vat2 is not integrated in packaging yet.

Type: feature
Signed-off-by: Ole Troan <ot@cisco.com>
Change-Id: Ib45ddeafb180ea7da8c5dc274a9274d7a4edc876
Signed-off-by: Ole Troan <ot@cisco.com>

5 files changed, 13 insertions, 10 deletions

diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt
index 9f4dbb085d3..e387d25f913 100644
--- a/src/vnet/CMakeLists.txt
+++ b/src/vnet/CMakeLists.txt
@@ -864,7 +864,6 @@ list(APPEND VNET_HEADERS
 
 list(APPEND VNET_API_FILES
   srmpls/sr_mpls.api
-  srv6/sr_types.api
 )
 
 ##############################################################################
@@ -1501,3 +1500,10 @@ add_vpp_library (vatclient
 )
 
 ##############################################################################
+# VAT2 plugins
+##############################################################################
+add_vpp_test_library(vnet
+  ${VNET_API_FILES}
+)
+
+##############################################################################
diff --git a/src/vnet/ip/ip.api b/src/vnet/ip/ip.api
index 7ac9de783bb..8b18c1e764a 100644
--- a/src/vnet/ip/ip.api
+++ b/src/vnet/ip/ip.api
@@ -124,7 +124,7 @@ autoreply define ip_table_flush
     @param context - sender context
     @param table - description of the table
 */
-manual_endian manual_print define ip_table_details
+define ip_table_details
 {
   u32 context;
   vl_api_ip_table_t table;
@@ -184,7 +184,7 @@ define ip_route_dump
 /** \brief IP FIB table entry response
     @param route The route entry in the table
 */
-manual_endian manual_print define ip_route_details
+define ip_route_details
 {
   u32 context;
   vl_api_ip_route_t route;
@@ -339,7 +339,7 @@ define ip_mroute_dump
 /** \brief IP Multicast Route Details
     @param route - Details of the route
 */
-manual_endian manual_print define ip_mroute_details
+define ip_mroute_details
 {
   u32 context;
   vl_api_ip_mroute_t route;
diff --git a/src/vnet/l2/l2.api b/src/vnet/l2/l2.api
index b6bd4b5f7b1..416874d94c2 100644
--- a/src/vnet/l2/l2.api
+++ b/src/vnet/l2/l2.api
@@ -315,7 +315,7 @@ typedef bridge_domain_sw_if
     @param bd_tag - optional textual tag for the bridge domain
     @param n_sw_ifs - number of sw_if_index's in the domain
 */
-manual_print manual_endian define bridge_domain_details
+define bridge_domain_details
 {
   u32 context;
   u32 bd_id;
diff --git a/src/vnet/l2/l2_api.c b/src/vnet/l2/l2_api.c
index c8690c6ccae..746c7fdf2a2 100644
--- a/src/vnet/l2/l2_api.c
+++ b/src/vnet/l2/l2_api.c
@@ -42,9 +42,6 @@
 #include <vnet/vnet_all_api_h.h>
 #undef vl_endianfun
 
-#define vl_api_bridge_domain_details_t_endian vl_noop_handler
-#define vl_api_bridge_domain_details_t_print vl_noop_handler
-
 /* instantiate all the print functions we know about */
 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
 #define vl_printfun
diff --git a/src/vnet/mpls/mpls.api b/src/vnet/mpls/mpls.api
index fb3ab1a4798..9d4ec0bf7bf 100644
--- a/src/vnet/mpls/mpls.api
+++ b/src/vnet/mpls/mpls.api
@@ -86,7 +86,7 @@ define mpls_tunnel_dump
 
 /** \brief mpls tunnel details
 */
-manual_endian manual_print define mpls_tunnel_details
+define mpls_tunnel_details
 {
   u32 context;
   vl_api_mpls_tunnel_t mt_tunnel;
@@ -192,7 +192,7 @@ define mpls_route_dump
     @param count - the number of fib_path in path
     @param path  - array of of fib_path structures
 */
-manual_endian manual_print define mpls_route_details
+define mpls_route_details
 {
   u32 context;
   vl_api_mpls_route_t mr_route;