hsa: move vcl test apps to hsa

Type: refactor

Change-Id: I352975585c1091bfc5b85d7f8fe985f9059820a7
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 743 insertions, 0 deletions

diff --git a/src/plugins/hs_apps/vcl/vcl_test_server.c b/src/plugins/hs_apps/vcl/vcl_test_server.c
new file mode 100644
index 00000000000..62292adae5f
--- /dev/null
+++ b/src/plugins/hs_apps/vcl/vcl_test_server.c
@@ -0,0 +1,743 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * 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.
+ */
+
+#include <unistd.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <ctype.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <hs_apps/vcl/vcl_test.h>
+#include <sys/epoll.h>
+#include <vppinfra/mem.h>
+#include <pthread.h>
+
+typedef struct
+{
+  uint8_t is_alloc;
+  int fd;
+  uint8_t *buf;
+  uint32_t buf_size;
+  vcl_test_cfg_t cfg;
+  vcl_test_stats_t stats;
+  vppcom_endpt_t endpt;
+  uint8_t ip[16];
+  vppcom_data_segments_t ds;
+} vcl_test_server_conn_t;
+
+typedef struct
+{
+  uint16_t port;
+  uint32_t address_ip6;
+  u8 proto;
+  u8 workers;
+  vppcom_endpt_t endpt;
+} vcl_test_server_cfg_t;
+
+typedef struct
+{
+  uint32_t wrk_index;
+  int listen_fd;
+  int epfd;
+  struct epoll_event wait_events[VCL_TEST_CFG_MAX_EPOLL_EVENTS];
+  size_t conn_pool_size;
+  vcl_test_server_conn_t *conn_pool;
+  int nfds;
+  pthread_t thread_handle;
+} vcl_test_server_worker_t;
+
+typedef struct
+{
+  vcl_test_server_cfg_t cfg;
+  vcl_test_server_worker_t *workers;
+
+  struct sockaddr_storage servaddr;
+  volatile int worker_fails;
+  volatile int active_workers;
+  u8 use_ds;
+} vcl_test_server_main_t;
+
+static __thread int __wrk_index = 0;
+
+static vcl_test_server_main_t vcl_server_main;
+
+static inline void
+conn_pool_expand (vcl_test_server_worker_t * wrk, size_t expand_size)
+{
+  vcl_test_server_conn_t *conn_pool;
+  size_t new_size = wrk->conn_pool_size + expand_size;
+  int i;
+
+  conn_pool = realloc (wrk->conn_pool, new_size * sizeof (*wrk->conn_pool));
+  if (conn_pool)
+    {
+      for (i = wrk->conn_pool_size; i < new_size; i++)
+	{
+	  vcl_test_server_conn_t *conn = &conn_pool[i];
+	  memset (conn, 0, sizeof (*conn));
+	  vcl_test_cfg_init (&conn->cfg);
+	  vcl_test_buf_alloc (&conn->cfg, 1 /* is_rxbuf */ ,
+			      &conn->buf, &conn->buf_size);
+	  conn->cfg.txbuf_size = conn->cfg.rxbuf_size;
+	}
+
+      wrk->conn_pool = conn_pool;
+      wrk->conn_pool_size = new_size;
+    }
+  else
+    {
+      vterr ("conn_pool_expand()", -errno);
+    }
+}
+
+static inline vcl_test_server_conn_t *
+conn_pool_alloc (vcl_test_server_worker_t * wrk)
+{
+  int i, expand = 0;
+
+again:
+  for (i = 0; i < wrk->conn_pool_size; i++)
+    {
+      if (!wrk->conn_pool[i].is_alloc)
+	{
+	  wrk->conn_pool[i].endpt.ip = wrk->conn_pool[i].ip;
+	  wrk->conn_pool[i].is_alloc = 1;
+	  return (&wrk->conn_pool[i]);
+	}
+    }
+
+  if (expand == 0)
+    {
+      conn_pool_expand (wrk, 2 * wrk->conn_pool_size);
+      expand = 1;
+      goto again;
+    }
+  vtwrn ("Failed to allocate connection even after expand");
+  return 0;
+}
+
+static inline void
+conn_pool_free (vcl_test_server_conn_t * conn)
+{
+  conn->fd = 0;
+  conn->is_alloc = 0;
+}
+
+static inline void
+sync_config_and_reply (vcl_test_server_conn_t * conn, vcl_test_cfg_t * rx_cfg)
+{
+  conn->cfg = *rx_cfg;
+  vcl_test_buf_alloc (&conn->cfg, 1 /* is_rxbuf */ ,
+		      &conn->buf, &conn->buf_size);
+  conn->cfg.txbuf_size = conn->cfg.rxbuf_size;
+
+  if (conn->cfg.verbose)
+    {
+      vtinf ("(fd %d): Replying to cfg message!\n", conn->fd);
+      vcl_test_cfg_dump (&conn->cfg, 0 /* is_client */ );
+    }
+  (void) vcl_test_write (conn->fd, (uint8_t *) & conn->cfg,
+			 sizeof (conn->cfg), NULL, conn->cfg.verbose);
+}
+
+static void
+vts_server_start_stop (vcl_test_server_worker_t * wrk,
+		       vcl_test_server_conn_t * conn, vcl_test_cfg_t * rx_cfg)
+{
+  u8 is_bi = rx_cfg->test == VCL_TEST_TYPE_BI;
+  vcl_test_server_conn_t *tc;
+  char buf[64];
+  int i;
+
+  if (rx_cfg->ctrl_handle == conn->fd)
+    {
+      for (i = 0; i < wrk->conn_pool_size; i++)
+	{
+	  tc = &wrk->conn_pool[i];
+	  if (tc->cfg.ctrl_handle != conn->fd)
+	    continue;
+
+	  vcl_test_stats_accumulate (&conn->stats, &tc->stats);
+	  if (vcl_comp_tspec (&conn->stats.stop, &tc->stats.stop) < 0)
+	    conn->stats.stop = tc->stats.stop;
+	  /* Client delays sending of disconnect */
+	  conn->stats.stop.tv_sec -= VCL_TEST_DELAY_DISCONNECT;
+	  if (conn->cfg.verbose)
+	    {
+	      sprintf (buf, "SERVER (fd %d) RESULTS", tc->fd);
+	      vcl_test_stats_dump (buf, &tc->stats, 1 /* show_rx */ ,
+				   is_bi /* show tx */ , conn->cfg.verbose);
+	    }
+	}
+
+      vcl_test_stats_dump ("SERVER RESULTS", &conn->stats, 1 /* show_rx */ ,
+			   is_bi /* show_tx */ , conn->cfg.verbose);
+      vcl_test_cfg_dump (&conn->cfg, 0 /* is_client */ );
+      if (conn->cfg.verbose)
+	{
+	  vtinf ("  vcl server main\n"
+		 VCL_TEST_SEPARATOR_STRING
+		 "       buf:  %p\n"
+		 "  buf size:  %u (0x%08x)\n"
+		 VCL_TEST_SEPARATOR_STRING,
+		 conn->buf, conn->buf_size, conn->buf_size);
+	}
+
+      sync_config_and_reply (conn, rx_cfg);
+      memset (&conn->stats, 0, sizeof (conn->stats));
+    }
+  else
+    {
+      if (rx_cfg->ctrl_handle == ~0)
+	{
+	  rx_cfg->ctrl_handle = conn->fd;
+	  vtinf ("Set control fd %d for test!", conn->fd);
+	}
+      else
+	{
+	  vtinf ("Starting %s-directional Stream Test (fd %d)!",
+		 is_bi ? "Bi" : "Uni", conn->fd);
+	}
+
+      sync_config_and_reply (conn, rx_cfg);
+
+      /* read the 1st chunk, record start time */
+      memset (&conn->stats, 0, sizeof (conn->stats));
+      clock_gettime (CLOCK_REALTIME, &conn->stats.start);
+    }
+}
+
+static inline void
+vts_server_rx (vcl_test_server_conn_t * conn, int rx_bytes)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+  int client_fd = conn->fd;
+
+  if (conn->cfg.test == VCL_TEST_TYPE_BI)
+    {
+      if (vsm->use_ds)
+	{
+	  (void) vcl_test_write (client_fd, conn->ds[0].data, conn->ds[0].len,
+				 &conn->stats, conn->cfg.verbose);
+	  if (conn->ds[1].len)
+	    (void) vcl_test_write (client_fd, conn->ds[1].data,
+				   conn->ds[1].len, &conn->stats,
+				   conn->cfg.verbose);
+	}
+      else
+	(void) vcl_test_write (client_fd, conn->buf, rx_bytes, &conn->stats,
+			       conn->cfg.verbose);
+    }
+
+  if (vsm->use_ds)
+    vppcom_session_free_segments (conn->fd, conn->ds);
+
+  if (conn->stats.rx_bytes >= conn->cfg.total_bytes)
+    clock_gettime (CLOCK_REALTIME, &conn->stats.stop);
+}
+
+static void
+vts_server_echo (vcl_test_server_conn_t * conn, int rx_bytes)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+  int tx_bytes, nbytes, pos;
+
+  if (vsm->use_ds)
+    vppcom_data_segment_copy (conn->buf, conn->ds, rx_bytes);
+
+  /* If it looks vaguely like a string, make sure it's terminated */
+  pos = rx_bytes < conn->buf_size ? rx_bytes : conn->buf_size - 1;
+  ((char *) conn->buf)[pos] = 0;
+  vtinf ("(fd %d): RX (%d bytes) - '%s'", conn->fd, rx_bytes, conn->buf);
+
+  if (conn->cfg.verbose)
+    vtinf ("(fd %d): Echoing back", conn->fd);
+
+  nbytes = strlen ((const char *) conn->buf) + 1;
+  tx_bytes = vcl_test_write (conn->fd, conn->buf, nbytes, &conn->stats,
+			     conn->cfg.verbose);
+  if (tx_bytes >= 0)
+    vtinf ("(fd %d): TX (%d bytes) - '%s'", conn->fd, tx_bytes, conn->buf);
+}
+
+static void
+vts_new_client (vcl_test_server_worker_t * wrk)
+{
+  vcl_test_server_conn_t *conn;
+  struct epoll_event ev;
+  int rv, client_fd;
+
+  conn = conn_pool_alloc (wrk);
+  if (!conn)
+    {
+      vtwrn ("No free connections!");
+      return;
+    }
+
+  client_fd = vppcom_session_accept (wrk->listen_fd, &conn->endpt, 0);
+  if (client_fd < 0)
+    {
+      vterr ("vppcom_session_accept()", client_fd);
+      return;
+    }
+  conn->fd = client_fd;
+
+  vtinf ("Got a connection -- fd = %d (0x%08x)!", client_fd, client_fd);
+
+  ev.events = EPOLLIN;
+  ev.data.u64 = conn - wrk->conn_pool;
+  rv = vppcom_epoll_ctl (wrk->epfd, EPOLL_CTL_ADD, client_fd, &ev);
+  if (rv < 0)
+    {
+      vterr ("vppcom_epoll_ctl()", rv);
+      return;
+    }
+  wrk->nfds++;
+}
+
+static void
+print_usage_and_exit (void)
+{
+  fprintf (stderr,
+	   "vcl_test_server [OPTIONS] <port>\n"
+	   "  OPTIONS\n"
+	   "  -h               Print this message and exit.\n"
+	   "  -6               Use IPv6\n"
+	   "  -w <num>         Number of workers\n"
+	   "  -D               Use UDP transport layer\n"
+	   "  -L               Use TLS transport layer\n");
+  exit (1);
+}
+
+static void
+vcl_test_init_endpoint_addr (vcl_test_server_main_t * vsm)
+{
+  struct sockaddr_storage *servaddr = &vsm->servaddr;
+  memset (servaddr, 0, sizeof (*servaddr));
+
+  if (vsm->cfg.address_ip6)
+    {
+      struct sockaddr_in6 *server_addr = (struct sockaddr_in6 *) servaddr;
+      server_addr->sin6_family = AF_INET6;
+      server_addr->sin6_addr = in6addr_any;
+      server_addr->sin6_port = htons (vsm->cfg.port);
+    }
+  else
+    {
+      struct sockaddr_in *server_addr = (struct sockaddr_in *) servaddr;
+      server_addr->sin_family = AF_INET;
+      server_addr->sin_addr.s_addr = htonl (INADDR_ANY);
+      server_addr->sin_port = htons (vsm->cfg.port);
+    }
+
+  if (vsm->cfg.address_ip6)
+    {
+      struct sockaddr_in6 *server_addr = (struct sockaddr_in6 *) servaddr;
+      vsm->cfg.endpt.is_ip4 = 0;
+      vsm->cfg.endpt.ip = (uint8_t *) & server_addr->sin6_addr;
+      vsm->cfg.endpt.port = (uint16_t) server_addr->sin6_port;
+    }
+  else
+    {
+      struct sockaddr_in *server_addr = (struct sockaddr_in *) servaddr;
+      vsm->cfg.endpt.is_ip4 = 1;
+      vsm->cfg.endpt.ip = (uint8_t *) & server_addr->sin_addr;
+      vsm->cfg.endpt.port = (uint16_t) server_addr->sin_port;
+    }
+}
+
+static void
+vcl_test_server_process_opts (vcl_test_server_main_t * vsm, int argc,
+			      char **argv)
+{
+  int v, c;
+
+  vsm->cfg.proto = VPPCOM_PROTO_TCP;
+
+  opterr = 0;
+  while ((c = getopt (argc, argv, "6DLsw:")) != -1)
+    switch (c)
+      {
+      case '6':
+	vsm->cfg.address_ip6 = 1;
+	break;
+
+      case 'D':
+	vsm->cfg.proto = VPPCOM_PROTO_UDP;
+	break;
+
+      case 'L':
+	vsm->cfg.proto = VPPCOM_PROTO_TLS;
+	break;
+
+      case 'w':
+	v = atoi (optarg);
+	if (v > 1)
+	  vsm->cfg.workers = v;
+	else
+	  vtwrn ("Invalid number of workers %d", v);
+	break;
+      case 's':
+	vsm->use_ds = 1;
+	break;
+      case '?':
+	switch (optopt)
+	  {
+	  default:
+	    if (isprint (optopt))
+	      vtwrn ("Unknown option `-%c'.", optopt);
+	    else
+	      vtwrn ("Unknown option character `\\x%x'.", optopt);
+	  }
+	/* fall thru */
+      case 'h':
+      default:
+	print_usage_and_exit ();
+      }
+
+  if (argc < (optind + 1))
+    {
+      fprintf (stderr, "SERVER: ERROR: Insufficient number of arguments!\n");
+      print_usage_and_exit ();
+    }
+
+  if (sscanf (argv[optind], "%d", &v) == 1)
+    vsm->cfg.port = (uint16_t) v;
+  else
+    {
+      fprintf (stderr, "SERVER: ERROR: Invalid port (%s)!\n", argv[optind]);
+      print_usage_and_exit ();
+    }
+
+  vcl_test_init_endpoint_addr (vsm);
+}
+
+int
+vts_handle_cfg (vcl_test_server_worker_t * wrk, vcl_test_cfg_t * rx_cfg,
+		vcl_test_server_conn_t * conn, int rx_bytes)
+{
+  if (rx_cfg->verbose)
+    {
+      vtinf ("(fd %d): Received a cfg msg!", conn->fd);
+      vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
+    }
+
+  if (rx_bytes != sizeof (*rx_cfg))
+    {
+      vtinf ("(fd %d): Invalid cfg msg size %d expected %lu!", conn->fd,
+	     rx_bytes, sizeof (*rx_cfg));
+      conn->cfg.rxbuf_size = 0;
+      conn->cfg.num_writes = 0;
+      if (conn->cfg.verbose)
+	{
+	  vtinf ("(fd %d): Replying to cfg msg", conn->fd);
+	  vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
+	}
+      vcl_test_write (conn->fd, (uint8_t *) & conn->cfg,
+		      sizeof (conn->cfg), NULL, conn->cfg.verbose);
+      return -1;
+    }
+
+  switch (rx_cfg->test)
+    {
+    case VCL_TEST_TYPE_NONE:
+    case VCL_TEST_TYPE_ECHO:
+      sync_config_and_reply (conn, rx_cfg);
+      break;
+
+    case VCL_TEST_TYPE_BI:
+    case VCL_TEST_TYPE_UNI:
+      vts_server_start_stop (wrk, conn, rx_cfg);
+      break;
+
+    case VCL_TEST_TYPE_EXIT:
+      vtinf ("Session fd %d closing!", conn->fd);
+      clock_gettime (CLOCK_REALTIME, &conn->stats.stop);
+      vppcom_session_close (conn->fd);
+      conn_pool_free (conn);
+      wrk->nfds--;
+      break;
+
+    default:
+      vtwrn ("Unknown test type %d", rx_cfg->test);
+      vcl_test_cfg_dump (rx_cfg, 0 /* is_client */ );
+      break;
+    }
+
+  return 0;
+}
+
+static void
+vts_worker_init (vcl_test_server_worker_t * wrk)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+  struct epoll_event listen_ev;
+  int rv;
+
+  __wrk_index = wrk->wrk_index;
+
+  vtinf ("Initializing worker ...");
+
+  conn_pool_expand (wrk, VCL_TEST_CFG_MAX_TEST_SESS + 1);
+  if (wrk->wrk_index)
+    if (vppcom_worker_register ())
+      vtfail ("vppcom_worker_register()", 1);
+
+  wrk->listen_fd = vppcom_session_create (vsm->cfg.proto,
+					  0 /* is_nonblocking */ );
+  if (wrk->listen_fd < 0)
+    vtfail ("vppcom_session_create()", wrk->listen_fd);
+
+
+  if (vsm->cfg.proto == VPPCOM_PROTO_TLS)
+    {
+      vppcom_session_tls_add_cert (wrk->listen_fd, vcl_test_crt_rsa,
+				   vcl_test_crt_rsa_len);
+      vppcom_session_tls_add_key (wrk->listen_fd, vcl_test_key_rsa,
+				  vcl_test_key_rsa_len);
+    }
+
+  rv = vppcom_session_bind (wrk->listen_fd, &vsm->cfg.endpt);
+  if (rv < 0)
+    vtfail ("vppcom_session_bind()", rv);
+
+  if (!(vsm->cfg.proto == VPPCOM_PROTO_UDP))
+    {
+      rv = vppcom_session_listen (wrk->listen_fd, 10);
+      if (rv < 0)
+	vtfail ("vppcom_session_listen()", rv);
+    }
+
+  wrk->epfd = vppcom_epoll_create ();
+  if (wrk->epfd < 0)
+    vtfail ("vppcom_epoll_create()", wrk->epfd);
+
+  listen_ev.events = EPOLLIN;
+  listen_ev.data.u32 = ~0;
+  rv = vppcom_epoll_ctl (wrk->epfd, EPOLL_CTL_ADD, wrk->listen_fd,
+			 &listen_ev);
+  if (rv < 0)
+    vtfail ("vppcom_epoll_ctl", rv);
+
+  vsm->active_workers += 1;
+  vtinf ("Waiting for a client to connect on port %d ...", vsm->cfg.port);
+}
+
+static int
+vts_conn_expect_config (vcl_test_server_conn_t * conn)
+{
+  if (conn->cfg.test == VCL_TEST_TYPE_ECHO)
+    return 1;
+
+  return (conn->stats.rx_bytes < 128
+	  || conn->stats.rx_bytes > conn->cfg.total_bytes);
+}
+
+static vcl_test_cfg_t *
+vts_conn_read_config (vcl_test_server_conn_t * conn)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+
+  if (vsm->use_ds)
+    {
+      /* We could avoid the copy if the first segment is big enough but this
+       * just simplifies things */
+      vppcom_data_segment_copy (conn->buf, conn->ds, sizeof (vcl_test_cfg_t));
+    }
+  return (vcl_test_cfg_t *) conn->buf;
+}
+
+static inline int
+vts_conn_read (vcl_test_server_conn_t * conn)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+  if (vsm->use_ds)
+    return vcl_test_read_ds (conn->fd, conn->ds, &conn->stats);
+  else
+    return vcl_test_read (conn->fd, conn->buf, conn->buf_size, &conn->stats);
+}
+
+static inline int
+vts_conn_has_ascii (vcl_test_server_conn_t * conn)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+
+  if (vsm->use_ds)
+    return isascii (conn->ds[0].data[0]);
+  else
+    return isascii (conn->buf[0]);
+}
+
+static void *
+vts_worker_loop (void *arg)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+  vcl_test_server_worker_t *wrk = arg;
+  vcl_test_server_conn_t *conn;
+  int i, rx_bytes, num_ev;
+  vcl_test_cfg_t *rx_cfg;
+
+  if (wrk->wrk_index)
+    vts_worker_init (wrk);
+
+  while (1)
+    {
+      num_ev = vppcom_epoll_wait (wrk->epfd, wrk->wait_events,
+				  VCL_TEST_CFG_MAX_EPOLL_EVENTS, 60000.0);
+      if (num_ev < 0)
+	{
+	  vterr ("vppcom_epoll_wait()", num_ev);
+	  goto fail;
+	}
+      else if (num_ev == 0)
+	{
+	  vtinf ("vppcom_epoll_wait() timeout!");
+	  continue;
+	}
+      for (i = 0; i < num_ev; i++)
+	{
+	  conn = &wrk->conn_pool[wrk->wait_events[i].data.u32];
+	  if (wrk->wait_events[i].events & (EPOLLHUP | EPOLLRDHUP))
+	    {
+	      vppcom_session_close (conn->fd);
+	      wrk->nfds -= 1;
+	      if (!wrk->nfds)
+		{
+		  vtinf ("All client connections closed\n");
+		  goto done;
+		}
+	      continue;
+	    }
+	  if (wrk->wait_events[i].data.u32 == ~0)
+	    {
+	      vts_new_client (wrk);
+	      continue;
+	    }
+
+	  if (EPOLLIN & wrk->wait_events[i].events)
+	    {
+	    read_again:
+	      rx_bytes = vts_conn_read (conn);
+
+	      if (rx_bytes <= 0)
+		{
+		  if (errno == ECONNRESET)
+		    {
+		      vtinf ("Connection reset by remote peer.\n");
+		      goto fail;
+		    }
+		  else
+		    continue;
+		}
+
+	      if (vts_conn_expect_config (conn))
+		{
+		  rx_cfg = vts_conn_read_config (conn);
+		  if (rx_cfg->magic == VCL_TEST_CFG_CTRL_MAGIC)
+		    {
+		      if (vsm->use_ds)
+			vppcom_session_free_segments (conn->fd, conn->ds);
+		      vts_handle_cfg (wrk, rx_cfg, conn, rx_bytes);
+		      if (!wrk->nfds)
+			{
+			  vtinf ("All client connections closed\n");
+			  goto done;
+			}
+		      continue;
+		    }
+		}
+	      if ((conn->cfg.test == VCL_TEST_TYPE_UNI)
+		  || (conn->cfg.test == VCL_TEST_TYPE_BI))
+		{
+		  vts_server_rx (conn, rx_bytes);
+		  if (vppcom_session_attr (conn->fd, VPPCOM_ATTR_GET_NREAD, 0,
+					   0) > 0)
+		    goto read_again;
+		  continue;
+		}
+	      if (vts_conn_has_ascii (conn))
+		{
+		  vts_server_echo (conn, rx_bytes);
+		}
+	      else
+		{
+		  vtwrn ("FIFO not drained! extra bytes %d", rx_bytes);
+		}
+	    }
+	  else
+	    {
+	      vtwrn ("Unhandled event");
+	      goto fail;
+	    }
+	}
+    }
+
+fail:
+  vsm->worker_fails -= 1;
+
+done:
+  vppcom_session_close (wrk->listen_fd);
+  if (wrk->conn_pool)
+    free (wrk->conn_pool);
+  vsm->active_workers -= 1;
+  return 0;
+}
+
+int
+main (int argc, char **argv)
+{
+  vcl_test_server_main_t *vsm = &vcl_server_main;
+  int rv, i;
+
+  clib_mem_init_thread_safe (0, 64 << 20);
+  vsm->cfg.port = VCL_TEST_SERVER_PORT;
+  vsm->cfg.workers = 1;
+  vsm->active_workers = 0;
+  vcl_test_server_process_opts (vsm, argc, argv);
+
+  rv = vppcom_app_create ("vcl_test_server");
+  if (rv)
+    vtfail ("vppcom_app_create()", rv);
+
+  vsm->workers = calloc (vsm->cfg.workers, sizeof (*vsm->workers));
+  vts_worker_init (&vsm->workers[0]);
+  for (i = 1; i < vsm->cfg.workers; i++)
+    {
+      vsm->workers[i].wrk_index = i;
+      rv = pthread_create (&vsm->workers[i].thread_handle, NULL,
+			   vts_worker_loop, (void *) &vsm->workers[i]);
+    }
+  vts_worker_loop (&vsm->workers[0]);
+
+  while (vsm->active_workers > 0)
+    ;
+
+  vppcom_app_destroy ();
+  free (vsm->workers);
+
+  return vsm->worker_fails;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */