VCL: Refactor VCL test (part 1)

Change-Id: I6a326e24ed953b1cef63bd4010a3bedd6c4a7b1c
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

1 files changed, 127 insertions, 0 deletions

diff --git a/src/vcl/vcl_test.h b/src/vcl/vcl_test.h
new file mode 100644
index 00000000000..0f3bd2d3a40
--- /dev/null
+++ b/src/vcl/vcl_test.h
@@ -0,0 +1,127 @@
+/*
+ * 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.
+ */
+
+#ifndef __vcl_test_h__
+#define __vcl_test_h__
+
+#include <netdb.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <vcl/vppcom.h>
+#include <vcl/sock_test_common.h>
+
+static inline int
+vcl_test_read (int fd, uint8_t *buf, uint32_t nbytes,
+                sock_test_stats_t *stats)
+{
+  int rx_bytes, errno_val;
+  
+  do
+    {
+      if (stats)
+        stats->rx_xacts++;
+      rx_bytes = vppcom_session_read (fd, buf, nbytes);
+
+      if (rx_bytes < 0)
+        {
+          errno = -rx_bytes;
+          rx_bytes = -1;
+        }
+      if (stats)
+        {
+          if ((rx_bytes == 0) ||
+              ((rx_bytes < 0) && ((errno == EAGAIN) || (errno == EWOULDBLOCK))))
+            stats->rx_eagain++;
+          else if (rx_bytes < nbytes)
+            stats->rx_incomp++;
+        }
+    }
+  while ((rx_bytes == 0) ||
+         ((rx_bytes < 0) && ((errno == EAGAIN) || (errno == EWOULDBLOCK))));
+  
+  if (rx_bytes < 0)
+    {
+      errno_val = errno;
+      perror ("ERROR in sock_test_read()");
+      fprintf (stderr, "SOCK_TEST: ERROR: socket read "
+               "failed (errno = %d)!\n", errno_val);
+      errno = errno_val;
+    }
+  else if (stats)
+    stats->rx_bytes += rx_bytes;
+
+  return (rx_bytes);
+}
+
+static inline int
+vcl_test_write (int fd, uint8_t *buf, uint32_t nbytes,
+                 sock_test_stats_t *stats, uint32_t verbose)
+{
+  int tx_bytes = 0;
+  int nbytes_left = nbytes;
+  int rv, errno_val;
+
+  do
+    {
+      if (stats)
+        stats->tx_xacts++;
+      rv = vppcom_session_write (fd, buf, nbytes_left);
+      if (rv < 0)
+        {
+          errno = -rv;
+          rv = -1;
+        }
+      if (rv < 0)
+        {
+          if ((errno == EAGAIN) || (errno == EWOULDBLOCK))
+            {
+              if (stats)
+                stats->tx_eagain++;
+              continue;
+            }
+          else
+            break;
+        }
+      tx_bytes += rv;
+     
+      if (tx_bytes != nbytes)
+        {
+          nbytes_left = nbytes_left - rv;
+          if (stats)
+            stats->tx_incomp++;
+          if (verbose)
+            {
+              printf ("SOCK_TEST: WARNING: bytes written (%d) "
+                      "!= bytes to write (%d)!\n", tx_bytes, nbytes);
+            }
+        }
+     
+    } while (tx_bytes != nbytes);
+
+  if (tx_bytes < 0)
+    {
+      errno_val = errno;
+      perror ("ERROR in sock_test_write()");
+      fprintf (stderr, "SOCK_TEST: ERROR: socket write failed "
+               "(errno = %d)!\n", errno_val);
+    }
+  else if (stats)
+    stats->tx_bytes += tx_bytes;
+  
+  return (tx_bytes);
+}
+
+#endif /* __vcl_test_h__ */