Reorganize source tree to use single autotools instance

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

1 files changed, 452 insertions, 0 deletions

diff --git a/src/vnet/l2/l2_patch.c b/src/vnet/l2/l2_patch.c
new file mode 100644
index 00000000000..5e4691f45c7
--- /dev/null
+++ b/src/vnet/l2/l2_patch.c
@@ -0,0 +1,452 @@
+/*
+ * 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 <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/feature/feature.h>
+#include <vppinfra/error.h>
+
+typedef struct
+{
+  /* vector of dispositions, indexed by rx_sw_if_index */
+  u32 *tx_next_by_rx_sw_if_index;
+  u32 *tx_sw_if_index_by_rx_sw_if_index;
+
+  /* convenience variables */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+} l2_patch_main_t;
+
+typedef struct
+{
+  u32 rx_sw_if_index;
+  u32 tx_sw_if_index;
+} l2_patch_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_l2_patch_trace (u8 * s, va_list * args)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+  l2_patch_trace_t *t = va_arg (*args, l2_patch_trace_t *);
+
+  s = format (s, "L2_PATCH: rx %d tx %d", t->rx_sw_if_index,
+	      t->tx_sw_if_index);
+  return s;
+}
+
+l2_patch_main_t l2_patch_main;
+
+static vlib_node_registration_t l2_patch_node;
+
+#define foreach_l2_patch_error			\
+_(PATCHED, "L2 patch packets")			\
+_(DROPPED, "L2 patch misconfigured drops")
+
+typedef enum
+{
+#define _(sym,str) L2_PATCH_ERROR_##sym,
+  foreach_l2_patch_error
+#undef _
+    L2_PATCH_N_ERROR,
+} l2_patch_error_t;
+
+static char *l2_patch_error_strings[] = {
+#define _(sym,string) string,
+  foreach_l2_patch_error
+#undef _
+};
+
+typedef enum
+{
+  L2_PATCH_NEXT_DROP,
+  L2_PATCH_N_NEXT,
+} l2_patch_next_t;
+
+static uword
+l2_patch_node_fn (vlib_main_t * vm,
+		  vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  u32 n_left_from, *from, *to_next;
+  l2_patch_next_t next_index;
+  l2_patch_main_t *l2pm = &l2_patch_main;
+  vlib_node_t *n = vlib_get_node (vm, l2_patch_node.index);
+  u32 node_counter_base_index = n->error_heap_index;
+  vlib_error_main_t *em = &vm->error_main;
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  while (n_left_from > 0)
+    {
+      u32 n_left_to_next;
+
+      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+      while (n_left_from >= 4 && n_left_to_next >= 2)
+	{
+	  u32 bi0, bi1;
+	  vlib_buffer_t *b0, *b1;
+	  u32 next0, next1;
+	  u32 sw_if_index0, sw_if_index1;
+
+	  /* Prefetch next iteration. */
+	  {
+	    vlib_buffer_t *p2, *p3;
+
+	    p2 = vlib_get_buffer (vm, from[2]);
+	    p3 = vlib_get_buffer (vm, from[3]);
+
+	    vlib_prefetch_buffer_header (p2, LOAD);
+	    vlib_prefetch_buffer_header (p3, LOAD);
+
+	    /* So stupid / simple, we don't need to prefetch data */
+	  }
+
+	  /* speculatively enqueue b0 and b1 to the current next frame */
+	  to_next[0] = bi0 = from[0];
+	  to_next[1] = bi1 = from[1];
+	  from += 2;
+	  to_next += 2;
+	  n_left_from -= 2;
+	  n_left_to_next -= 2;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+	  b1 = vlib_get_buffer (vm, bi1);
+
+	  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+	  sw_if_index1 = vnet_buffer (b1)->sw_if_index[VLIB_RX];
+
+	  ASSERT (l2pm->tx_next_by_rx_sw_if_index[sw_if_index0] != ~0);
+	  ASSERT (l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index0] != ~0);
+	  ASSERT (l2pm->tx_next_by_rx_sw_if_index[sw_if_index1] != ~0);
+	  ASSERT (l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index1] != ~0);
+
+	  next0 = l2pm->tx_next_by_rx_sw_if_index[sw_if_index0];
+	  next1 = l2pm->tx_next_by_rx_sw_if_index[sw_if_index1];
+	  vnet_buffer (b0)->sw_if_index[VLIB_TX] =
+	    l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index0];
+	  vnet_buffer (b1)->sw_if_index[VLIB_TX] =
+	    l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index1];
+
+	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+	    {
+	      if (b0->flags & VLIB_BUFFER_IS_TRACED)
+		{
+		  l2_patch_trace_t *t =
+		    vlib_add_trace (vm, node, b0, sizeof (*t));
+		  t->rx_sw_if_index = sw_if_index0;
+		  t->tx_sw_if_index =
+		    l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index0];
+		}
+	      if (b1->flags & VLIB_BUFFER_IS_TRACED)
+		{
+		  l2_patch_trace_t *t =
+		    vlib_add_trace (vm, node, b1, sizeof (*t));
+		  t->rx_sw_if_index = sw_if_index1;
+		  t->tx_sw_if_index =
+		    l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index1];
+		}
+	    }
+
+	  /* verify speculative enqueues, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, bi1, next0, next1);
+	}
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+	  u32 bi0;
+	  vlib_buffer_t *b0;
+	  u32 next0;
+	  u32 sw_if_index0;
+
+	  /* speculatively enqueue b0 to the current next frame */
+	  bi0 = from[0];
+	  to_next[0] = bi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  b0 = vlib_get_buffer (vm, bi0);
+
+	  sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
+
+	  ASSERT (l2pm->tx_next_by_rx_sw_if_index[sw_if_index0] != ~0);
+	  ASSERT (l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index0] != ~0);
+
+	  next0 = l2pm->tx_next_by_rx_sw_if_index[sw_if_index0];
+	  vnet_buffer (b0)->sw_if_index[VLIB_TX] =
+	    l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index0];
+
+	  if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+	    {
+	      if (b0->flags & VLIB_BUFFER_IS_TRACED)
+		{
+		  l2_patch_trace_t *t =
+		    vlib_add_trace (vm, node, b0, sizeof (*t));
+		  t->rx_sw_if_index = sw_if_index0;
+		  t->tx_sw_if_index =
+		    l2pm->tx_sw_if_index_by_rx_sw_if_index[sw_if_index0];
+		}
+	    }
+
+	  /* verify speculative enqueue, maybe switch current next frame */
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   bi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+
+  em->counters[node_counter_base_index + L2_PATCH_ERROR_PATCHED] +=
+    frame->n_vectors;
+
+  return frame->n_vectors;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (l2_patch_node, static) = {
+  .function = l2_patch_node_fn,
+  .name = "l2-patch",
+  .vector_size = sizeof (u32),
+  .format_trace = format_l2_patch_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = ARRAY_LEN(l2_patch_error_strings),
+  .error_strings = l2_patch_error_strings,
+
+  .n_next_nodes = L2_PATCH_N_NEXT,
+
+  /* edit / add dispositions here */
+  .next_nodes = {
+        [L2_PATCH_NEXT_DROP] = "error-drop",
+  },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (l2_patch_node, l2_patch_node_fn)
+     int vnet_l2_patch_add_del (u32 rx_sw_if_index, u32 tx_sw_if_index,
+				int is_add)
+{
+  l2_patch_main_t *l2pm = &l2_patch_main;
+  vnet_hw_interface_t *rxhi, *txhi;
+  u32 tx_next_index;
+
+  /*
+   * We assume that the API msg handler has used 2x VALIDATE_SW_IF_INDEX
+   * macros...
+   */
+
+  rxhi = vnet_get_sup_hw_interface (l2pm->vnet_main, rx_sw_if_index);
+
+  /* Make sure caller didn't pass a vlan subif, etc. */
+  if (rxhi->sw_if_index != rx_sw_if_index)
+    return VNET_API_ERROR_INVALID_SW_IF_INDEX;
+
+  txhi = vnet_get_sup_hw_interface (l2pm->vnet_main, tx_sw_if_index);
+  if (txhi->sw_if_index != tx_sw_if_index)
+    return VNET_API_ERROR_INVALID_SW_IF_INDEX_2;
+
+  if (is_add)
+    {
+      tx_next_index = vlib_node_add_next (l2pm->vlib_main,
+					  l2_patch_node.index,
+					  txhi->output_node_index);
+
+      vec_validate_init_empty (l2pm->tx_next_by_rx_sw_if_index,
+			       rx_sw_if_index, ~0);
+
+      l2pm->tx_next_by_rx_sw_if_index[rx_sw_if_index] = tx_next_index;
+      vec_validate_init_empty (l2pm->tx_sw_if_index_by_rx_sw_if_index,
+			       rx_sw_if_index, ~0);
+      l2pm->tx_sw_if_index_by_rx_sw_if_index[rx_sw_if_index]
+	= txhi->sw_if_index;
+
+      ethernet_set_flags (l2pm->vnet_main, rxhi->hw_if_index,
+			  ETHERNET_INTERFACE_FLAG_ACCEPT_ALL);
+
+      vnet_feature_enable_disable ("device-input", "l2-patch",
+				   rxhi->hw_if_index, 1, 0, 0);
+    }
+  else
+    {
+      ethernet_set_flags (l2pm->vnet_main, rxhi->hw_if_index,
+			  0 /* disable promiscuous mode */ );
+
+      vnet_feature_enable_disable ("device-input", "l2-patch",
+				   rxhi->hw_if_index, 0, 0, 0);
+      if (vec_len (l2pm->tx_next_by_rx_sw_if_index) > rx_sw_if_index)
+	{
+	  l2pm->tx_next_by_rx_sw_if_index[rx_sw_if_index] = ~0;
+	  l2pm->tx_sw_if_index_by_rx_sw_if_index[rx_sw_if_index] = ~0;
+	}
+    }
+
+  return 0;
+}
+
+static clib_error_t *
+test_patch_command_fn (vlib_main_t * vm,
+		       unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  l2_patch_main_t *l2pm = &l2_patch_main;
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u32 rx_sw_if_index, tx_sw_if_index;
+  int rv;
+  int rx_set = 0;
+  int tx_set = 0;
+  int is_add = 1;
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "rx %U", unformat_vnet_sw_interface,
+		    l2pm->vnet_main, &rx_sw_if_index))
+	rx_set = 1;
+      else if (unformat (line_input, "tx %U", unformat_vnet_sw_interface,
+			 l2pm->vnet_main, &tx_sw_if_index))
+	tx_set = 1;
+      else if (unformat (line_input, "del"))
+	is_add = 0;
+      else
+	break;
+    }
+
+  if (rx_set == 0)
+    return clib_error_return (0, "rx interface not set");
+
+  if (tx_set == 0)
+    return clib_error_return (0, "tx interface not set");
+
+  rv = vnet_l2_patch_add_del (rx_sw_if_index, tx_sw_if_index, is_add);
+
+  switch (rv)
+    {
+    case 0:
+      break;
+
+    case VNET_API_ERROR_INVALID_SW_IF_INDEX:
+      return clib_error_return (0, "rx interface not a physical port");
+
+    case VNET_API_ERROR_INVALID_SW_IF_INDEX_2:
+      return clib_error_return (0, "tx interface not a physical port");
+
+    default:
+      return clib_error_return
+	(0, "WARNING: vnet_l2_patch_add_del returned %d", rv);
+    }
+
+  return 0;
+}
+
+/*?
+ * Create or delete a Layer 2 patch.
+ *
+ * @cliexpar
+ * @cliexstart{test l2patch rx <intfc> tx <intfc> [del]}
+ * @cliexend
+ * @todo This is incomplete. This needs a detailed description and a
+ * practical example.
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (test_patch_command, static) = {
+    .path = "test l2patch",
+    .short_help = "test l2patch rx <intfc> tx <intfc> [del]",
+    .function = test_patch_command_fn,
+};
+/* *INDENT-ON* */
+
+/** Display the contents of the l2patch table. */
+static clib_error_t *
+show_l2patch (vlib_main_t * vm,
+	      unformat_input_t * input, vlib_cli_command_t * cmd)
+{
+  l2_patch_main_t *l2pm = &l2_patch_main;
+  u32 rx_sw_if_index;
+  u32 no_entries = 1;
+
+  ASSERT (vec_len (l2pm->tx_next_by_rx_sw_if_index) ==
+	  vec_len (l2pm->tx_sw_if_index_by_rx_sw_if_index));
+
+  for (rx_sw_if_index = 0;
+       rx_sw_if_index < vec_len (l2pm->tx_sw_if_index_by_rx_sw_if_index);
+       rx_sw_if_index++)
+    {
+      u32 tx_sw_if_index =
+	l2pm->tx_sw_if_index_by_rx_sw_if_index[rx_sw_if_index];
+      if (tx_sw_if_index != ~0)
+	{
+	  no_entries = 0;
+	  vlib_cli_output (vm, "%26U -> %U",
+			   format_vnet_sw_if_index_name,
+			   l2pm->vnet_main, rx_sw_if_index,
+			   format_vnet_sw_if_index_name,
+			   l2pm->vnet_main, tx_sw_if_index);
+	}
+    }
+
+  if (no_entries)
+    vlib_cli_output (vm, "no l2patch entries");
+
+  return 0;
+}
+
+/*?
+ * Show Layer 2 patch entries.
+ *
+ * @cliexpar
+ * @cliexstart{show l2patch}
+ * @cliexend
+ * @todo This is incomplete. This needs a detailed description and a
+ * practical example.
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (show_l2patch_cli, static) = {
+  .path = "show l2patch",
+  .short_help = "Show l2 interface cross-connect entries",
+  .function = show_l2patch,
+};
+/* *INDENT-ON* */
+
+clib_error_t *
+l2_patch_init (vlib_main_t * vm)
+{
+  l2_patch_main_t *mp = &l2_patch_main;
+
+  mp->vlib_main = vm;
+  mp->vnet_main = vnet_get_main ();
+
+  return 0;
+}
+
+VLIB_INIT_FUNCTION (l2_patch_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */