Repair vlib API socket server

- Teach vpp_api_test to send/receive API messages over sockets
- Add memfd-based shared memory
- Add api messages to create memfd-based shared memory segments
- vpp_api_test supports both socket and shared memory segment connections
- vpp_api_test pivot from socket to shared memory API messaging
- add socket client support to libvlibclient.so
- dead client reaper sends ping messages, container-friendly
- dead client reaper falls back to kill (<pid>, 0) live checking
  if e.g. a python app goes silent for tens of seconds
- handle ping messages in python client support code
- teach show api ring about pairwise shared-memory segments
- fix ip probing of already resolved destinations (VPP-998)

We'll need this work to implement proper host-stack client isolation

Change-Id: Ic23b65f75c854d0393d9a2e9d6b122a9551be769
Signed-off-by: Dave Barach <dave@barachs.net>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/src/vat/vat.h b/src/vat/vat.h
index 233a1c41820..1ae46f30a7e 100644
--- a/src/vat/vat.h
+++ b/src/vat/vat.h
@@ -15,13 +15,18 @@
 #ifndef __included_vat_h__
 #define __included_vat_h__
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <setjmp.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
 #include <vppinfra/clib.h>
 #include <vppinfra/format.h>
 #include <vppinfra/error.h>
 #include <vppinfra/time.h>
 #include <vppinfra/macros.h>
+#include <vppinfra/socket.h>
 #include <vnet/vnet.h>
 #include <vlib/vlib.h>
 #include <vlib/unix/unix.h>
@@ -147,7 +152,6 @@ typedef struct
   /* Errors by number */
   uword *error_string_by_error_number;
 
-
   /* Main thread can spin (w/ timeout) here if needed */
   u32 async_mode;
   u32 async_errors;
@@ -155,10 +159,11 @@ typedef struct
   volatile i32 retval;
   volatile u32 sw_if_index;
   volatile u8 *shmem_result;
-  volatile u8 *cmd_reply;
+  u8 *cmd_reply;
 
   /* our client index */
   u32 my_client_index;
+  int client_index_invalid;
 
   /* Time is of the essence... */
   clib_time_t clib_time;
@@ -204,6 +209,9 @@ typedef struct
   ip4_nbr_counter_t **ip4_nbr_counters;
   ip6_nbr_counter_t **ip6_nbr_counters;
 
+  socket_client_main_t socket_client_main;
+  u8 *socket_name;
+
   /* Convenience */
   vlib_main_t *vlib_main;
 } vat_main_t;
@@ -233,6 +241,8 @@ u8 *format_ip6_address (u8 * s, va_list * args);
 u8 *format_ip46_address (u8 * s, va_list * args);
 u8 *format_ethernet_address (u8 * s, va_list * args);
 
+int vat_socket_connect (vat_main_t * vam);
+
 #if VPP_API_TEST_BUILTIN
 #define print api_cli_output
 void api_cli_output (void *, const char *fmt, ...);