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>

14 files changed, 8 insertions, 14 deletions

diff --git a/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export.c b/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export.c
index ec43e4849b4..976c831fcce 100644
--- a/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export.c
+++ b/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export.c
@@ -25,7 +25,6 @@
 
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
 
 #include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h>
 
diff --git a/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export_test.c b/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export_test.c
index 17d31c95bcb..7e66329a998 100644
--- a/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export_test.c
+++ b/src/plugins/ioam/export-vxlan-gpe/vxlan_gpe_ioam_export_test.c
@@ -21,7 +21,6 @@
 #include <vat/vat.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
 #include <vppinfra/error.h>
 
 #define __plugin_msg_base export_test_main.msg_id_base
diff --git a/src/plugins/ioam/export/ioam_export.c b/src/plugins/ioam/export/ioam_export.c
index 46ac3d4a582..98e5f116c8a 100644
--- a/src/plugins/ioam/export/ioam_export.c
+++ b/src/plugins/ioam/export/ioam_export.c
@@ -24,7 +24,6 @@
 
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
 #include <vnet/ip/ip6_hop_by_hop.h>
 
 
diff --git a/src/plugins/ioam/export/ioam_export_test.c b/src/plugins/ioam/export/ioam_export_test.c
index 5023afd7d63..70efc7e3e4e 100644
--- a/src/plugins/ioam/export/ioam_export_test.c
+++ b/src/plugins/ioam/export/ioam_export_test.c
@@ -21,7 +21,6 @@
 #include <vat/vat.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
 #include <vppinfra/error.h>
 
 #define __plugin_msg_base export_test_main.msg_id_base
diff --git a/src/plugins/ioam/ip6/ioam_cache.c b/src/plugins/ioam/ip6/ioam_cache.c
index 4c9997f4923..4e147da34dc 100644
--- a/src/plugins/ioam/ip6/ioam_cache.c
+++ b/src/plugins/ioam/ip6/ioam_cache.c
@@ -24,7 +24,6 @@
 
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
 #include <vnet/ip/ip6_hop_by_hop.h>
 
 #include "ioam_cache.h"
diff --git a/src/plugins/ioam/lib-pot/pot_api.c b/src/plugins/ioam/lib-pot/pot_api.c
index cc1b7b76a78..52ea68e083d 100644
--- a/src/plugins/ioam/lib-pot/pot_api.c
+++ b/src/plugins/ioam/lib-pot/pot_api.c
@@ -25,7 +25,6 @@
 
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
 
 /* define message IDs */
 #include <ioam/lib-pot/pot_msg_enum.h>
diff --git a/src/plugins/ioam/lib-pot/pot_test.c b/src/plugins/ioam/lib-pot/pot_test.c
index 1c6dd02dae1..2b528ece54e 100644
--- a/src/plugins/ioam/lib-pot/pot_test.c
+++ b/src/plugins/ioam/lib-pot/pot_test.c
@@ -21,7 +21,7 @@
 #include <vat/vat.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 #include <vppinfra/error.h>
 
 #define __plugin_msg_base pot_test_main.msg_id_base
diff --git a/src/plugins/ioam/lib-trace/trace_api.c b/src/plugins/ioam/lib-trace/trace_api.c
index 6889859baa0..cd00c591fda 100644
--- a/src/plugins/ioam/lib-trace/trace_api.c
+++ b/src/plugins/ioam/lib-trace/trace_api.c
@@ -26,7 +26,7 @@
 
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 
 /* define message IDs */
 #include <ioam/lib-trace/trace_msg_enum.h>
diff --git a/src/plugins/ioam/lib-trace/trace_test.c b/src/plugins/ioam/lib-trace/trace_test.c
index 1e287deede4..f598b7ee936 100644
--- a/src/plugins/ioam/lib-trace/trace_test.c
+++ b/src/plugins/ioam/lib-trace/trace_test.c
@@ -21,7 +21,7 @@
 #include <vat/vat.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 #include <vppinfra/error.h>
 
 #define __plugin_msg_base trace_test_main.msg_id_base
diff --git a/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_api.c b/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_api.c
index 634133a4f7f..3bc682bfbfb 100644
--- a/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_api.c
+++ b/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_api.c
@@ -25,7 +25,7 @@
 
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 
 /* define message IDs */
 #include <ioam/lib-vxlan-gpe/vxlan_gpe_msg_enum.h>
diff --git a/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_test.c b/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_test.c
index 80e656448c6..fdb4cf63b8b 100644
--- a/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_test.c
+++ b/src/plugins/ioam/lib-vxlan-gpe/vxlan_gpe_test.c
@@ -21,7 +21,7 @@
 #include <vat/vat.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 #include <vppinfra/error.h>
 
 #define __plugin_msg_base vxlan_gpe_test_main.msg_id_base
diff --git a/src/plugins/ioam/udp-ping/udp_ping_api.c b/src/plugins/ioam/udp-ping/udp_ping_api.c
index 7593873103d..52190097f1a 100644
--- a/src/plugins/ioam/udp-ping/udp_ping_api.c
+++ b/src/plugins/ioam/udp-ping/udp_ping_api.c
@@ -25,7 +25,7 @@
 
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 
 /* define message IDs */
 #include <ioam/udp-ping/udp_ping_msg_enum.h>
diff --git a/src/plugins/ioam/udp-ping/udp_ping_node.c b/src/plugins/ioam/udp-ping/udp_ping_node.c
index e1a57955fbc..7a725258d65 100644
--- a/src/plugins/ioam/udp-ping/udp_ping_node.c
+++ b/src/plugins/ioam/udp-ping/udp_ping_node.c
@@ -17,7 +17,7 @@
 #include <vlib/vlib.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 #include <vnet/ip/ip.h>
 #include <vnet/ip/ip6_hop_by_hop.h>
 #include <ioam/encap/ip6_ioam_trace.h>
diff --git a/src/plugins/ioam/udp-ping/udp_ping_test.c b/src/plugins/ioam/udp-ping/udp_ping_test.c
index 4ec11351221..a5cc4f3f7e3 100644
--- a/src/plugins/ioam/udp-ping/udp_ping_test.c
+++ b/src/plugins/ioam/udp-ping/udp_ping_test.c
@@ -21,7 +21,7 @@
 #include <vat/vat.h>
 #include <vlibapi/api.h>
 #include <vlibmemory/api.h>
-#include <vlibsocket/api.h>
+
 #include <vppinfra/error.h>
 #include <vnet/ip/ip.h>