Reorganize source tree to use single autotools instance

Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 340 insertions, 0 deletions

diff --git a/src/vnet/ip/ip4_test.c b/src/vnet/ip/ip4_test.c
new file mode 100644
index 00000000000..45d171130df
--- /dev/null
+++ b/src/vnet/ip/ip4_test.c
@@ -0,0 +1,340 @@
+/*
+ * Copyright (c) 2015 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 <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+
+/**
+ * @file
+ * @brief IPv4 FIB Tester.
+ *
+ * Not compiled in by default. IPv4 FIB tester. Add, probe, delete a bunch of
+ * random routes / masks and make sure that the mtrie agrees with
+ * the hash-table FIB.
+ *
+ * Manipulate the FIB by means of the debug CLI commands, to minimize
+ * the chances of doing something idiotic.
+ */
+
+/*
+ * These routines need to be redeclared non-static elsewhere.
+ *
+ * Also: rename ip_route() -> vnet_ip_route_cmd() and add the usual
+ * test_route_init() call to main.c
+ */
+clib_error_t *vnet_ip_route_cmd (vlib_main_t * vm,
+				 unformat_input_t * input,
+				 vlib_cli_command_t * cmd_arg);
+
+int ip4_lookup_validate (ip4_address_t * a, u32 fib_index0);
+
+ip4_fib_t *find_fib_by_table_index_or_id (ip4_main_t * im,
+					  u32 table_index_or_id, u32 flags);
+
+/* Routes to insert/delete/probe in FIB */
+typedef struct
+{
+  ip4_address_t address;
+  u32 mask_width;
+  u32 interface_id;		/* not an xx_if_index */
+} test_route_t;
+
+typedef struct
+{
+  /* Test routes in use */
+  test_route_t *route_pool;
+
+  /* Number of fake ethernets created */
+  u32 test_interfaces_created;
+} test_main_t;
+
+test_main_t test_main;
+
+/* fake ethernet device class, distinct from "fake-ethX" */
+static u8 *
+format_test_interface_name (u8 * s, va_list * args)
+{
+  u32 dev_instance = va_arg (*args, u32);
+  return format (s, "test-eth%d", dev_instance);
+}
+
+static uword
+dummy_interface_tx (vlib_main_t * vm,
+		    vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  clib_warning ("you shouldn't be here, leaking buffers...");
+  return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VNET_DEVICE_CLASS (test_interface_device_class,static) = {
+  .name = "Test interface",
+  .format_device_name = format_test_interface_name,
+  .tx_function = dummy_interface_tx,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+thrash (vlib_main_t * vm,
+	unformat_input_t * main_input, vlib_cli_command_t * cmd_arg)
+{
+  u32 seed = 0xdeaddabe;
+  u32 niter = 10;
+  u32 nroutes = 10;
+  u32 ninterfaces = 4;
+  f64 min_mask_bits = 7.0;
+  f64 max_mask_bits = 32.0;
+  u32 table_id = 11;		/* my amp goes to 11 (use fib 11) */
+  u32 table_index;
+  int iter, i;
+  u8 *cmd;
+  test_route_t *tr;
+  test_main_t *tm = &test_main;
+  ip4_main_t *im = &ip4_main;
+  vnet_main_t *vnm = vnet_get_main ();
+  unformat_input_t cmd_input;
+  f64 rf;
+  u32 *masks = 0;
+  u32 tmp;
+  u32 hw_if_index;
+  clib_error_t *error = 0;
+  uword *p;
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u8 hw_address[6];
+  ip4_fib_t *fib;
+  int verbose = 0;
+
+  /* Precompute mask width -> mask vector */
+  tmp = (u32) ~ 0;
+  vec_validate (masks, 32);
+  for (i = 32; i > 0; i--)
+    {
+      masks[i] = tmp;
+      tmp <<= 1;
+    }
+
+  if (unformat_user (main_input, unformat_line_input, line_input))
+    {
+      while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+	{
+	  if (unformat (line_input, "seed %d", &seed))
+	    ;
+	  else if (unformat (line_input, "niter %d", &niter))
+	    ;
+	  else if (unformat (line_input, "nroutes %d", &nroutes))
+	    ;
+	  else if (unformat (line_input, "ninterfaces %d", &ninterfaces))
+	    ;
+	  else if (unformat (line_input, "min-mask-bits %d", &tmp))
+	    min_mask_bits = (f64) tmp;
+	  else if (unformat (line_input, "max-mask-bits %d", &tmp))
+	    max_mask_bits = (f64) tmp;
+	  else if (unformat (line_input, "verbose"))
+	    verbose = 1;
+	  else
+	    return clib_error_return (0, "unknown input `%U'",
+				      format_unformat_error, line_input);
+	}
+    }
+
+  /* Find or create FIB table 11 */
+  fib = ip4_fib_find_or_create_fib_by_table_id (table_id);
+
+  for (i = tm->test_interfaces_created; i < ninterfaces; i++)
+    {
+      vnet_hw_interface_t *hw;
+      memset (hw_address, 0, sizeof (hw_address));
+      hw_address[0] = 0xd0;
+      hw_address[1] = 0x0f;
+      hw_address[5] = i;
+
+      error = ethernet_register_interface
+	(vnm, test_interface_device_class.index, i /* instance */ ,
+	 hw_address, &hw_if_index,
+	 /* flag change */ 0);
+
+      /* Fake interfaces use FIB table 11 */
+      hw = vnet_get_hw_interface (vnm, hw_if_index);
+      vec_validate (im->fib_index_by_sw_if_index, hw->sw_if_index);
+      im->fib_index_by_sw_if_index[hw->sw_if_index] = fib->index;
+      ip4_sw_interface_enable_disable (sw_if_index, 1);
+    }
+
+  tm->test_interfaces_created = ninterfaces;
+
+  /* Find fib index corresponding to FIB id 11 */
+  p = hash_get (im->fib_index_by_table_id, table_id);
+  if (p == 0)
+    {
+      vlib_cli_output (vm, "Couldn't map fib id %d to fib index\n", table_id);
+      return 0;
+    }
+  table_index = p[0];
+
+  for (iter = 0; iter < niter; iter++)
+    {
+      /* Pick random routes to install */
+      for (i = 0; i < nroutes; i++)
+	{
+	  int j;
+
+	  pool_get (tm->route_pool, tr);
+	  memset (tr, 0, sizeof (*tr));
+
+	again:
+	  rf = random_f64 (&seed);
+	  tr->mask_width = (u32) (min_mask_bits
+				  + rf * (max_mask_bits - min_mask_bits));
+	  tmp = random_u32 (&seed);
+	  tmp &= masks[tr->mask_width];
+	  tr->address.as_u32 = clib_host_to_net_u32 (tmp);
+
+	  /* We can't add the same address/mask twice... */
+	  for (j = 0; j < i; j++)
+	    {
+	      test_route_t *prev;
+	      prev = pool_elt_at_index (tm->route_pool, j);
+	      if ((prev->address.as_u32 == tr->address.as_u32)
+		  && (prev->mask_width == tr->mask_width))
+		goto again;
+	    }
+
+	  rf = random_f64 (&seed);
+	  tr->interface_id = (u32) (rf * ninterfaces);
+	}
+
+      /* Add them */
+      for (i = 0; i < nroutes; i++)
+	{
+	  tr = pool_elt_at_index (tm->route_pool, i);
+	  cmd = format (0, "add table %d %U/%d via test-eth%d",
+			table_id,
+			format_ip4_address, &tr->address,
+			tr->mask_width, tr->interface_id);
+	  vec_add1 (cmd, 0);
+	  if (verbose)
+	    fformat (stderr, "ip route %s\n", cmd);
+	  unformat_init_string (&cmd_input, (char *) cmd, vec_len (cmd) - 1);
+	  error = vnet_ip_route_cmd (vm, &cmd_input, cmd_arg);
+	  if (error)
+	    clib_error_report (error);
+	  unformat_free (&cmd_input);
+	  vec_free (cmd);
+	}
+      /* Probe them */
+      for (i = 0; i < nroutes; i++)
+	{
+	  tr = pool_elt_at_index (tm->route_pool, i);
+	  if (!ip4_lookup_validate (&tr->address, table_index))
+	    {
+	      if (verbose)
+		fformat (stderr, "test lookup table %d %U\n",
+			 table_index, format_ip4_address, &tr->address);
+
+	      fformat (stderr, "FAIL-after-insert: %U/%d\n",
+		       format_ip4_address, &tr->address, tr->mask_width);
+	    }
+	}
+
+      /* Delete them */
+      for (i = 0; i < nroutes; i++)
+	{
+	  int j;
+	  tr = pool_elt_at_index (tm->route_pool, i);
+	  if (0)
+	    cmd = format (0, "del table %d %U/%d via test-eth%d",
+			  table_id,
+			  format_ip4_address, &tr->address,
+			  tr->mask_width, tr->interface_id);
+	  else
+	    cmd = format (0, "del table %d %U/%d",
+			  table_id,
+			  format_ip4_address, &tr->address, tr->mask_width);
+	  vec_add1 (cmd, 0);
+	  if (verbose)
+	    fformat (stderr, "ip route %s\n", cmd);
+	  unformat_init_string (&cmd_input, (char *) cmd, vec_len (cmd) - 1);
+	  error = vnet_ip_route_cmd (vm, &cmd_input, cmd_arg);
+	  if (error)
+	    clib_error_report (error);
+	  unformat_free (&cmd_input);
+	  vec_free (cmd);
+
+	  /* Make sure all undeleted routes still work */
+	  for (j = i + 1; j < nroutes; j++)
+	    {
+	      test_route_t *rr;	/* remaining route */
+	      rr = pool_elt_at_index (tm->route_pool, j);
+	      if (!ip4_lookup_validate (&rr->address, table_index))
+		{
+		  if (verbose)
+		    fformat (stderr, "test lookup table %d %U\n",
+			     table_index, format_ip4_address, &rr->address);
+
+		  fformat (stderr, "FAIL: %U/%d AWOL\n",
+			   format_ip4_address, &rr->address, rr->mask_width);
+		  fformat (stderr, " iter %d after %d of %d deletes\n",
+			   iter, i, nroutes);
+		  fformat (stderr, " last route deleted %U/%d\n",
+			   format_ip4_address, &tr->address, tr->mask_width);
+		}
+	    }
+	}
+
+      pool_free (tm->route_pool);
+    }
+  return 0;
+}
+
+/*?
+ * This command in not in the build by default. It is an internal
+ * command used to test the route functonality.
+ *
+ * Create test routes on IPv4 FIB table 11. Table will be created if it
+ * does not exist.
+ *
+ * There are several optional attributes:
+ * - If not provided, <seed> defaults to 0xdeaddabe.
+ * - If not provided, <num-iter> defaults to 10.
+ * - If not provided, <num-iface> defaults to 4.
+ * - If not provided, <min-mask> defaults to 7.0.
+ * - If not provided, <max-mask> defaults to 32.0.
+ *
+ * @cliexpar
+ * Example of how to run:
+ * @cliexcmd{test route}
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (test_route_command, static) = {
+    .path = "test route",
+    .short_help = "test route [seed <seed-num>] [niter <num-iter>] [ninterfaces <num-iface>] [min-mask-bits <min-mask>] [max-mask-bits <max-mask>] [verbose]",    .function = thrash,
+    .function = thrash,
+};
+/* *INDENT-ON* */
+
+clib_error_t *
+test_route_init (vlib_main_t * vm)
+{
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (test_route_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */