Shared memory packet interface (memif) library

Change-Id: I5097462ae85acd705f19e92517c01094dba7565f
Signed-off-by: Jakub Grajciar <grajciar.jakub@gmail.com>

1 files changed, 1079 insertions, 0 deletions

diff --git a/extras/libmemif/test/main_test.c b/extras/libmemif/test/main_test.c
new file mode 100644
index 00000000000..deb8acb69ff
--- /dev/null
+++ b/extras/libmemif/test/main_test.c
@@ -0,0 +1,1079 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2017 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 <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include <main_test.h>
+
+#include <memif_private.h>
+
+#define SOCKET_FILENAME "/run/vpp/memif.sock"
+
+uint8_t ready_called;
+#define read_call  (1 << 0)
+#define write_call (1 << 1)
+#define error_call (1 << 2)
+
+int
+read_fn (memif_connection_t * c)
+{
+  ready_called |= read_call;
+  return 0;
+}
+
+int
+write_fn (memif_connection_t * c)
+{
+  ready_called |= write_call;
+  return 0;
+}
+
+int
+error_fn (memif_connection_t * c)
+{
+  ready_called |= error_call;
+  return 0;
+}
+
+static void
+register_fd_ready_fn (memif_connection_t * c,
+		      memif_fn * read_fn, memif_fn * write_fn,
+		      memif_fn * error_fn)
+{
+  c->read_fn = read_fn;
+  c->write_fn = write_fn;
+  c->error_fn = error_fn;
+}
+
+START_TEST (test_init)
+{
+  int err;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  ck_assert_ptr_ne (lm, NULL);
+  ck_assert_ptr_ne (lm->control_fd_update, NULL);
+  ck_assert_int_gt (lm->timerfd, 2);
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+}
+
+END_TEST
+START_TEST (test_init_epoll)
+{
+  int err;
+
+  if ((err = memif_init (NULL, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  ck_assert_ptr_ne (lm, NULL);
+  ck_assert_ptr_ne (lm->control_fd_update, NULL);
+  ck_assert_int_gt (lm->timerfd, 2);
+  ck_assert_int_gt (memif_epfd, -1);
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+}
+
+END_TEST
+START_TEST (test_create)
+{
+  int err;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  ck_assert_ptr_ne (c, NULL);
+
+  ck_assert_uint_eq (c->args.interface_id, args.interface_id);
+  ck_assert_uint_eq (c->args.is_master, args.is_master);
+  ck_assert_uint_eq (c->args.mode, args.mode);
+
+  ck_assert_uint_eq (c->args.num_s2m_rings, MEMIF_DEFAULT_TX_QUEUES);
+  ck_assert_uint_eq (c->args.num_m2s_rings, MEMIF_DEFAULT_RX_QUEUES);
+  ck_assert_uint_eq (c->args.buffer_size, MEMIF_DEFAULT_BUFFER_SIZE);
+  ck_assert_uint_eq (c->args.log2_ring_size, MEMIF_DEFAULT_LOG2_RING_SIZE);
+
+  ck_assert_ptr_eq (c->msg_queue, NULL);
+  ck_assert_ptr_eq (c->regions, NULL);
+  ck_assert_ptr_eq (c->tx_queues, NULL);
+  ck_assert_ptr_eq (c->rx_queues, NULL);
+
+  ck_assert_int_eq (c->fd, -1);
+
+  ck_assert_ptr_ne (c->on_connect, NULL);
+  ck_assert_ptr_ne (c->on_disconnect, NULL);
+  ck_assert_ptr_ne (c->on_interrupt, NULL);
+
+  ck_assert_str_eq (c->args.interface_name, args.interface_name);
+  ck_assert_str_eq (c->args.instance_name, args.instance_name);
+  ck_assert_str_eq (c->args.socket_filename, SOCKET_FILENAME);
+
+  struct itimerspec timer;
+  timerfd_gettime (lm->timerfd, &timer);
+
+  ck_assert_msg (timer.it_interval.tv_sec == lm->arm.it_interval.tv_sec,
+		 "timerfd not armed!");
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_create_master)
+{
+  int err, rv;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.is_master = 1;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  ck_assert_ptr_ne (c, NULL);
+
+  ck_assert_uint_eq (c->args.interface_id, args.interface_id);
+  ck_assert_uint_eq (c->args.is_master, args.is_master);
+  ck_assert_uint_eq (c->args.mode, args.mode);
+
+  ck_assert_uint_eq (c->args.num_s2m_rings, MEMIF_DEFAULT_TX_QUEUES);
+  ck_assert_uint_eq (c->args.num_m2s_rings, MEMIF_DEFAULT_RX_QUEUES);
+  ck_assert_uint_eq (c->args.buffer_size, MEMIF_DEFAULT_BUFFER_SIZE);
+  ck_assert_uint_eq (c->args.log2_ring_size, MEMIF_DEFAULT_LOG2_RING_SIZE);
+
+  ck_assert_ptr_eq (c->msg_queue, NULL);
+  ck_assert_ptr_eq (c->regions, NULL);
+  ck_assert_ptr_eq (c->tx_queues, NULL);
+  ck_assert_ptr_eq (c->rx_queues, NULL);
+
+  ck_assert_int_eq (c->fd, -1);
+
+  ck_assert_ptr_ne (c->on_connect, NULL);
+  ck_assert_ptr_ne (c->on_disconnect, NULL);
+  ck_assert_ptr_ne (c->on_interrupt, NULL);
+
+  ck_assert_str_eq (c->args.interface_name, args.interface_name);
+  ck_assert_str_eq (c->args.instance_name, args.instance_name);
+  ck_assert_str_eq (c->args.socket_filename, SOCKET_FILENAME);
+
+  struct stat file_stat;
+
+  rv = stat (SOCKET_FILENAME, &file_stat);
+  ck_assert_int_eq (rv, 0);
+
+  ck_assert (S_ISSOCK (file_stat.st_mode));
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_create_mult)
+{
+  int err;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_handle_t conn1 = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  args.interface_id = 1;
+
+  if ((err = memif_create (&conn1, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+  memif_connection_t *c1 = (memif_connection_t *) conn1;
+
+  ck_assert_ptr_ne (c, NULL);
+  ck_assert_ptr_ne (c1, NULL);
+
+  ck_assert_uint_eq (c->args.interface_id, 0);
+  ck_assert_uint_eq (c->args.is_master, args.is_master);
+  ck_assert_uint_eq (c->args.mode, args.mode);
+  ck_assert_uint_eq (c1->args.interface_id, 1);
+  ck_assert_uint_eq (c1->args.is_master, args.is_master);
+  ck_assert_uint_eq (c1->args.mode, args.mode);
+
+  ck_assert_uint_eq (c->args.num_s2m_rings, MEMIF_DEFAULT_TX_QUEUES);
+  ck_assert_uint_eq (c->args.num_m2s_rings, MEMIF_DEFAULT_RX_QUEUES);
+  ck_assert_uint_eq (c->args.buffer_size, MEMIF_DEFAULT_BUFFER_SIZE);
+  ck_assert_uint_eq (c->args.log2_ring_size, MEMIF_DEFAULT_LOG2_RING_SIZE);
+  ck_assert_uint_eq (c1->args.num_s2m_rings, MEMIF_DEFAULT_TX_QUEUES);
+  ck_assert_uint_eq (c1->args.num_m2s_rings, MEMIF_DEFAULT_RX_QUEUES);
+  ck_assert_uint_eq (c1->args.buffer_size, MEMIF_DEFAULT_BUFFER_SIZE);
+  ck_assert_uint_eq (c1->args.log2_ring_size, MEMIF_DEFAULT_LOG2_RING_SIZE);
+
+  ck_assert_ptr_eq (c->msg_queue, NULL);
+  ck_assert_ptr_eq (c->regions, NULL);
+  ck_assert_ptr_eq (c->tx_queues, NULL);
+  ck_assert_ptr_eq (c->rx_queues, NULL);
+  ck_assert_ptr_eq (c1->msg_queue, NULL);
+  ck_assert_ptr_eq (c1->regions, NULL);
+  ck_assert_ptr_eq (c1->tx_queues, NULL);
+  ck_assert_ptr_eq (c1->rx_queues, NULL);
+
+  ck_assert_int_eq (c->fd, -1);
+  ck_assert_int_eq (c1->fd, -1);
+
+  ck_assert_ptr_ne (c->on_connect, NULL);
+  ck_assert_ptr_ne (c->on_disconnect, NULL);
+  ck_assert_ptr_ne (c->on_interrupt, NULL);
+  ck_assert_ptr_ne (c1->on_connect, NULL);
+  ck_assert_ptr_ne (c1->on_disconnect, NULL);
+  ck_assert_ptr_ne (c1->on_interrupt, NULL);
+
+  ck_assert_str_eq (c->args.interface_name, args.interface_name);
+  ck_assert_str_eq (c->args.instance_name, args.instance_name);
+  ck_assert_str_eq (c->args.socket_filename, SOCKET_FILENAME);
+  ck_assert_str_eq (c1->args.interface_name, args.interface_name);
+  ck_assert_str_eq (c1->args.instance_name, args.instance_name);
+  ck_assert_str_eq (c1->args.socket_filename, SOCKET_FILENAME);
+
+  struct itimerspec timer;
+  timerfd_gettime (lm->timerfd, &timer);
+
+  ck_assert_msg (timer.it_interval.tv_sec == lm->arm.it_interval.tv_sec,
+		 "timerfd not armed!");
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_control_fd_handler)
+{
+  int err;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  if ((err =
+       memif_control_fd_handler (lm->timerfd,
+				 MEMIF_FD_EVENT_READ)) != MEMIF_ERR_SUCCESS)
+    ck_assert_msg (err == MEMIF_ERR_NO_FILE, "err code: %u, err msg: %s", err,
+		   memif_strerror (err));
+
+  register_fd_ready_fn (c, read_fn, write_fn, error_fn);
+  c->fd = 69;
+  lm->control_list[0].key = c->fd;
+  lm->control_list[0].data_struct = c;
+
+  if ((err =
+       memif_control_fd_handler (c->fd,
+				 MEMIF_FD_EVENT_READ)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert (ready_called & read_call);
+
+  if ((err =
+       memif_control_fd_handler (c->fd,
+				 MEMIF_FD_EVENT_WRITE)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert (ready_called & write_call);
+
+  if ((err =
+       memif_control_fd_handler (c->fd,
+				 MEMIF_FD_EVENT_ERROR)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert (ready_called & error_call);
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_buffer_alloc)
+{
+  int err, i;
+  uint8_t qid;
+  uint16_t buf;
+  memif_buffer_t *bufs;
+  uint16_t max_buf = 10;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  c->fd = 69;
+
+  /* test buffer allocation qid 0 (positive) */
+
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  qid = 0;
+  if ((err =
+       memif_buffer_alloc (conn, qid, bufs, max_buf,
+			   &buf)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (buf, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_uint_eq (bufs[i].buffer_len, MEMIF_DEFAULT_BUFFER_SIZE);
+
+  /* test buffer allocation qid 1 (positive) */
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  qid = 1;
+  if ((err =
+       memif_buffer_alloc (conn, qid, bufs, max_buf,
+			   &buf)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (buf, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_uint_eq (bufs[i].buffer_len, MEMIF_DEFAULT_BUFFER_SIZE);
+
+  /* test buffer allocation qid 2 (negative) */
+
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  qid = 2;
+  if ((err =
+       memif_buffer_alloc (conn, qid, bufs, max_buf,
+			   &buf)) != MEMIF_ERR_SUCCESS)
+    ck_assert_msg (err == MEMIF_ERR_QID, "err code: %u, err msg: %s", err,
+		   memif_strerror (err));
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  free (bufs);
+  bufs = NULL;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_tx_burst)
+{
+  int err, i;
+  uint16_t max_buf = 10, buf, tx;
+  uint8_t qid;
+  memif_buffer_t *bufs;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  c->fd = 69;
+
+  /* test transmit qid 0 (positive) */
+
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+  qid = 0;
+  if ((err =
+       memif_buffer_alloc (conn, qid, bufs, max_buf,
+			   &buf)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (buf, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_uint_eq (bufs[i].buffer_len, MEMIF_DEFAULT_BUFFER_SIZE);
+
+  if ((err =
+       memif_tx_burst (conn, qid, bufs, max_buf, &tx)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (tx, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_eq (bufs[i].data, NULL);
+
+  /* test transmit qid 1 (positive) */
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+  qid = 1;
+  if ((err =
+       memif_buffer_alloc (conn, qid, bufs, max_buf,
+			   &buf)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (buf, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_uint_eq (bufs[i].buffer_len, MEMIF_DEFAULT_BUFFER_SIZE);
+
+  if ((err =
+       memif_tx_burst (conn, qid, bufs, max_buf, &tx)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (tx, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_eq (bufs[i].data, NULL);
+
+  /* test transmit qid 2 (negative) */
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+  qid = 2;
+  if ((err =
+       memif_tx_burst (conn, qid, bufs, max_buf, &tx)) != MEMIF_ERR_SUCCESS)
+    ck_assert_msg (err == MEMIF_ERR_QID, "err code: %u, err msg: %s", err,
+		   memif_strerror (err));
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+  free (bufs);
+  bufs = NULL;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_rx_burst)
+{
+  int err, i;
+  uint16_t max_buf = 10, buf, rx;
+  uint8_t qid;
+  memif_buffer_t *bufs;
+  memif_queue_t *mq;
+  memif_ring_t *ring;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  c->fd = 69;
+
+  /* test receive qid 0 (positive) */
+  qid = 0;
+  mq = &c->rx_queues[qid];
+  ring = mq->ring;
+  ring->head += max_buf;
+
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  if ((err =
+       memif_rx_burst (conn, qid, bufs, max_buf, &rx)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (rx, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_ne (bufs[i].data, NULL);
+
+  /* test receive qid 1 (positive) */
+  qid = 1;
+  mq = &c->rx_queues[qid];
+  ring = mq->ring;
+  ring->head += max_buf;
+
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  if ((err =
+       memif_rx_burst (conn, qid, bufs, max_buf, &rx)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (rx, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_ne (bufs[i].data, NULL);
+
+  /* test receive qid 2 (negative) */
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  if ((err =
+       memif_rx_burst (conn, qid, bufs, max_buf, &rx)) != MEMIF_ERR_SUCCESS)
+    ck_assert_msg (err == MEMIF_ERR_QID, "err code: %u, err msg: %s", err,
+		   memif_strerror (err));
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+  free (bufs);
+  bufs = NULL;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_buffer_free)
+{
+  int err, i;
+  uint16_t max_buf = 10, buf, rx;
+  uint8_t qid;
+  memif_buffer_t *bufs;
+  memif_queue_t *mq;
+  memif_ring_t *ring;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  c->fd = 69;
+
+  /* test buffer free qid 0 (positive) */
+  qid = 0;
+  mq = &c->rx_queues[qid];
+  ring = mq->ring;
+  ring->head += 10;
+
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  if ((err =
+       memif_rx_burst (conn, qid, bufs, max_buf, &rx)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (rx, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_ne (bufs[i].data, NULL);
+
+  if ((err =
+       memif_buffer_free (conn, qid, bufs, max_buf,
+			  &buf)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (buf, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_eq (bufs[i].data, NULL);
+  ck_assert_uint_eq (ring->head, ring->tail);
+
+  /* test buffer free qid 1 (positive) */
+  qid = 1;
+  mq = &c->rx_queues[qid];
+  ring = mq->ring;
+  ring->head += 10;
+
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  if ((err =
+       memif_rx_burst (conn, qid, bufs, max_buf, &rx)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (rx, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_ne (bufs[i].data, NULL);
+
+  if ((err =
+       memif_buffer_free (conn, qid, bufs, max_buf,
+			  &buf)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_uint_eq (buf, max_buf);
+  for (i = 0; i < max_buf; i++)
+    ck_assert_ptr_eq (bufs[i].data, NULL);
+  ck_assert_uint_eq (ring->head, ring->tail);
+
+
+  /* test buffer free qid 2 (negative) */
+  qid = 2;
+  free (bufs);
+  bufs = malloc (sizeof (memif_buffer_t) * max_buf);
+
+  if ((err =
+       memif_buffer_free (conn, qid, bufs, max_buf,
+			  &buf)) != MEMIF_ERR_SUCCESS)
+    ck_assert_msg (err == MEMIF_ERR_QID, "err code: %u, err msg: %s", err,
+		   memif_strerror (err));
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+  free (bufs);
+  bufs = NULL;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_get_details)
+{
+  int err, i;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_details_t md;
+  memset (&md, 0, sizeof (md));
+  ssize_t buflen = 2048;
+  char *buf = malloc (buflen);
+  memset (buf, 0, buflen);
+
+  if ((err = memif_get_details (conn, &md, buf, buflen)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_str_eq (md.if_name, c->args.interface_name);
+  ck_assert_str_eq (md.inst_name, c->args.instance_name);
+  ck_assert_str_eq (md.remote_if_name, c->remote_if_name);
+  ck_assert_str_eq (md.remote_inst_name, c->remote_name);
+  ck_assert_str_eq (md.secret, c->args.secret);
+  ck_assert_str_eq (md.socket_filename, c->args.socket_filename);
+
+  ck_assert_uint_eq (md.id, c->args.interface_id);
+  ck_assert_uint_ne (md.role, c->args.is_master);
+  ck_assert_uint_eq (md.mode, c->args.mode);
+  for (i = 0; i < md.rx_queues_num; i++)
+    {
+      ck_assert_uint_eq (md.rx_queues[i].qid, i);
+      ck_assert_uint_eq (md.rx_queues[i].ring_size,
+			 (1 << c->args.log2_ring_size));
+      ck_assert_uint_eq (md.rx_queues[i].buffer_size, c->args.buffer_size);
+    }
+  for (i = 0; i < md.tx_queues_num; i++)
+    {
+      ck_assert_uint_eq (md.tx_queues[i].qid, i);
+      ck_assert_uint_eq (md.tx_queues[i].ring_size,
+			 (1 << c->args.log2_ring_size));
+      ck_assert_uint_eq (md.tx_queues[i].buffer_size, c->args.buffer_size);
+    }
+  ck_assert_uint_eq (md.link_up_down, 0);
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_init_regions_and_queues)
+{
+  int err;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_ptr_ne (c->regions, NULL);
+  ck_assert_ptr_ne (c->tx_queues, NULL);
+  ck_assert_ptr_ne (c->rx_queues, NULL);
+
+  ck_assert_ptr_ne (c->regions->shm, NULL);
+  ck_assert_ptr_ne (c->tx_queues->ring, NULL);
+  ck_assert_ptr_ne (c->rx_queues->ring, NULL);
+
+  ck_assert_int_ne (c->regions->fd, -1);
+  ck_assert_uint_eq (c->tx_queues->ring->cookie, MEMIF_COOKIE);
+  ck_assert_uint_eq (c->rx_queues->ring->cookie, MEMIF_COOKIE);
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_connect1)
+{
+  int err;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  if ((err = memif_connect1 (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST
+START_TEST (test_disconnect_internal)
+{
+  int err;
+  ready_called = 0;
+  memif_conn_handle_t conn = NULL;
+  memif_conn_args_t args;
+  memset (&args, 0, sizeof (args));
+  args.num_s2m_rings = 2;
+  args.num_m2s_rings = 2;
+
+  libmemif_main_t *lm = &libmemif_main;
+
+  if ((err =
+       memif_init (control_fd_update, TEST_APP_NAME)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  strncpy ((char *) args.interface_name, TEST_IF_NAME, strlen (TEST_IF_NAME));
+  strncpy ((char *) args.instance_name, TEST_APP_NAME,
+	   strlen (TEST_APP_NAME));
+
+  if ((err = memif_create (&conn, &args, on_connect,
+			   on_disconnect, on_interrupt,
+			   NULL)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  memif_connection_t *c = (memif_connection_t *) conn;
+
+  c->run_args.num_s2m_rings = 2;
+  c->run_args.num_m2s_rings = 2;
+  c->run_args.log2_ring_size = 10;
+  c->run_args.buffer_size = 2048;
+
+  if ((err = memif_init_regions_and_queues (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  if ((err = memif_disconnect_internal (c)) != MEMIF_ERR_SUCCESS)
+    ck_abort_msg ("err code: %u, err msg: %s", err, memif_strerror (err));
+
+  ck_assert_int_eq (c->fd, -1);
+
+  ck_assert_ptr_eq (c->tx_queues, NULL);
+  ck_assert_ptr_eq (c->rx_queues, NULL);
+  ck_assert_ptr_eq (c->regions, NULL);
+  ck_assert_ptr_eq (c->msg_queue, NULL);
+
+  struct itimerspec timer;
+  timerfd_gettime (lm->timerfd, &timer);
+
+  ck_assert_msg (timer.it_interval.tv_sec == lm->arm.it_interval.tv_sec,
+		 "timerfd not armed!");
+
+  if (lm->timerfd > 0)
+    close (lm->timerfd);
+  lm->timerfd = -1;
+
+  memif_delete (&conn);
+  ck_assert_ptr_eq (conn, NULL);
+}
+
+END_TEST Suite * main_suite ()
+{
+  Suite *s;
+
+  TCase *tc_api;
+  TCase *tc_internal;
+
+  /* create main test suite */
+  s = suite_create ("Libmemif main");
+
+  /* create api test case */
+  tc_api = tcase_create ("Api calls");
+  /* add tests to test case */
+  tcase_add_test (tc_api, test_init);
+  tcase_add_test (tc_api, test_init_epoll);
+  tcase_add_test (tc_api, test_create);
+  tcase_add_test (tc_api, test_create_master);
+  tcase_add_test (tc_api, test_create_mult);
+  tcase_add_test (tc_api, test_control_fd_handler);
+  tcase_add_test (tc_api, test_buffer_alloc);
+  tcase_add_test (tc_api, test_tx_burst);
+  tcase_add_test (tc_api, test_rx_burst);
+  tcase_add_test (tc_api, test_buffer_free);
+  tcase_add_test (tc_api, test_get_details);
+
+  /* create internal test case */
+  tc_internal = tcase_create ("Internal");
+  /* add tests to test case */
+  tcase_add_test (tc_internal, test_init_regions_and_queues);
+  tcase_add_test (tc_internal, test_connect1);
+  tcase_add_test (tc_internal, test_disconnect_internal);
+
+  /* add test cases to test suite */
+  suite_add_tcase (s, tc_api);
+  suite_add_tcase (s, tc_internal);
+
+  /* return main test suite to test runner */
+  return s;
+}