Reorganize source tree to use single autotools instance

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

1 files changed, 353 insertions, 0 deletions

diff --git a/src/vnet/ip/ip6_input.c b/src/vnet/ip/ip6_input.c
new file mode 100644
index 00000000000..bbc2cebaa39
--- /dev/null
+++ b/src/vnet/ip/ip6_input.c
@@ -0,0 +1,353 @@
+/*
+ * 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.
+ */
+/*
+ * ip/ip6_input.c: IP v6 input node
+ *
+ * Copyright (c) 2008 Eliot Dresselhaus
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/ppp/ppp.h>
+#include <vnet/hdlc/hdlc.h>
+
+typedef struct
+{
+  u8 packet_data[64];
+} ip6_input_trace_t;
+
+static u8 *
+format_ip6_input_trace (u8 * s, va_list * va)
+{
+  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*va, vlib_main_t *);
+  CLIB_UNUSED (vlib_node_t * node) = va_arg (*va, vlib_node_t *);
+  ip6_input_trace_t *t = va_arg (*va, ip6_input_trace_t *);
+
+  s = format (s, "%U",
+	      format_ip6_header, t->packet_data, sizeof (t->packet_data));
+
+  return s;
+}
+
+typedef enum
+{
+  IP6_INPUT_NEXT_DROP,
+  IP6_INPUT_NEXT_LOOKUP,
+  IP6_INPUT_NEXT_ICMP_ERROR,
+  IP6_INPUT_N_NEXT,
+} ip6_input_next_t;
+
+/* Validate IP v6 packets and pass them either to forwarding code
+   or drop exception packets. */
+static uword
+ip6_input (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+  vnet_main_t *vnm = vnet_get_main ();
+  ip6_main_t *im = &ip6_main;
+  ip_lookup_main_t *lm = &im->lookup_main;
+  u32 n_left_from, *from, *to_next;
+  ip6_input_next_t next_index;
+  vlib_node_runtime_t *error_node =
+    vlib_node_get_runtime (vm, ip6_input_node.index);
+  vlib_simple_counter_main_t *cm;
+  u32 cpu_index = os_get_cpu_number ();
+
+  from = vlib_frame_vector_args (frame);
+  n_left_from = frame->n_vectors;
+  next_index = node->cached_next_index;
+
+  if (node->flags & VLIB_NODE_FLAG_TRACE)
+    vlib_trace_frame_buffers_only (vm, node, from, frame->n_vectors,
+				   /* stride */ 1,
+				   sizeof (ip6_input_trace_t));
+
+  cm = vec_elt_at_index (vnm->interface_main.sw_if_counters,
+			 VNET_INTERFACE_COUNTER_IP6);
+
+  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)
+	{
+	  vlib_buffer_t *p0, *p1;
+	  ip6_header_t *ip0, *ip1;
+	  u32 pi0, sw_if_index0, next0 = 0;
+	  u32 pi1, sw_if_index1, next1 = 0;
+	  u8 error0, error1, arc0, arc1;
+
+	  /* 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);
+
+	    CLIB_PREFETCH (p2->data, sizeof (ip0[0]), LOAD);
+	    CLIB_PREFETCH (p3->data, sizeof (ip1[0]), LOAD);
+	  }
+
+	  pi0 = from[0];
+	  pi1 = from[1];
+
+	  to_next[0] = pi0;
+	  to_next[1] = pi1;
+	  from += 2;
+	  to_next += 2;
+	  n_left_from -= 2;
+	  n_left_to_next -= 2;
+
+	  p0 = vlib_get_buffer (vm, pi0);
+	  p1 = vlib_get_buffer (vm, pi1);
+
+	  ip0 = vlib_buffer_get_current (p0);
+	  ip1 = vlib_buffer_get_current (p1);
+
+	  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
+	  sw_if_index1 = vnet_buffer (p1)->sw_if_index[VLIB_RX];
+
+	  arc0 =
+	    ip6_address_is_multicast (&ip0->dst_address) ?
+	    lm->mcast_feature_arc_index : lm->ucast_feature_arc_index;
+	  arc1 =
+	    ip6_address_is_multicast (&ip1->dst_address) ?
+	    lm->mcast_feature_arc_index : lm->ucast_feature_arc_index;
+
+	  vnet_buffer (p0)->ip.adj_index[VLIB_RX] = ~0;
+	  vnet_buffer (p1)->ip.adj_index[VLIB_RX] = ~0;
+
+	  vnet_feature_arc_start (arc0, sw_if_index0, &next0, p0);
+	  vnet_feature_arc_start (arc1, sw_if_index1, &next1, p1);
+
+	  vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
+	  vlib_increment_simple_counter (cm, cpu_index, sw_if_index1, 1);
+
+	  error0 = error1 = IP6_ERROR_NONE;
+
+	  /* Version != 6?  Drop it. */
+	  error0 =
+	    (clib_net_to_host_u32
+	     (ip0->ip_version_traffic_class_and_flow_label) >> 28) !=
+	    6 ? IP6_ERROR_VERSION : error0;
+	  error1 =
+	    (clib_net_to_host_u32
+	     (ip1->ip_version_traffic_class_and_flow_label) >> 28) !=
+	    6 ? IP6_ERROR_VERSION : error1;
+
+	  /* hop limit < 1? Drop it.  for link-local broadcast packets,
+	   * like dhcpv6 packets from client has hop-limit 1, which should not
+	   * be dropped.
+	   */
+	  error0 = ip0->hop_limit < 1 ? IP6_ERROR_TIME_EXPIRED : error0;
+	  error1 = ip1->hop_limit < 1 ? IP6_ERROR_TIME_EXPIRED : error1;
+
+	  /* L2 length must be at least minimal IP header. */
+	  error0 =
+	    p0->current_length <
+	    sizeof (ip0[0]) ? IP6_ERROR_TOO_SHORT : error0;
+	  error1 =
+	    p1->current_length <
+	    sizeof (ip1[0]) ? IP6_ERROR_TOO_SHORT : error1;
+
+	  if (PREDICT_FALSE (error0 != IP6_ERROR_NONE))
+	    {
+	      if (error0 == IP6_ERROR_TIME_EXPIRED)
+		{
+		  icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded,
+					       ICMP6_time_exceeded_ttl_exceeded_in_transit,
+					       0);
+		  next0 = IP6_INPUT_NEXT_ICMP_ERROR;
+		}
+	      else
+		{
+		  next0 = IP6_INPUT_NEXT_DROP;
+		}
+	    }
+	  if (PREDICT_FALSE (error1 != IP6_ERROR_NONE))
+	    {
+	      if (error1 == IP6_ERROR_TIME_EXPIRED)
+		{
+		  icmp6_error_set_vnet_buffer (p1, ICMP6_time_exceeded,
+					       ICMP6_time_exceeded_ttl_exceeded_in_transit,
+					       0);
+		  next1 = IP6_INPUT_NEXT_ICMP_ERROR;
+		}
+	      else
+		{
+		  next1 = IP6_INPUT_NEXT_DROP;
+		}
+	    }
+
+	  p0->error = error_node->errors[error0];
+	  p1->error = error_node->errors[error1];
+
+	  vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   pi0, pi1, next0, next1);
+	}
+
+      while (n_left_from > 0 && n_left_to_next > 0)
+	{
+	  vlib_buffer_t *p0;
+	  ip6_header_t *ip0;
+	  u32 pi0, sw_if_index0, next0 = 0;
+	  u8 error0, arc0;
+
+	  pi0 = from[0];
+	  to_next[0] = pi0;
+	  from += 1;
+	  to_next += 1;
+	  n_left_from -= 1;
+	  n_left_to_next -= 1;
+
+	  p0 = vlib_get_buffer (vm, pi0);
+	  ip0 = vlib_buffer_get_current (p0);
+
+	  sw_if_index0 = vnet_buffer (p0)->sw_if_index[VLIB_RX];
+	  arc0 =
+	    ip6_address_is_multicast (&ip0->dst_address) ?
+	    lm->mcast_feature_arc_index : lm->ucast_feature_arc_index;
+	  vnet_buffer (p0)->ip.adj_index[VLIB_RX] = ~0;
+	  vnet_feature_arc_start (arc0, sw_if_index0, &next0, p0);
+
+	  vlib_increment_simple_counter (cm, cpu_index, sw_if_index0, 1);
+	  error0 = IP6_ERROR_NONE;
+
+	  /* Version != 6?  Drop it. */
+	  error0 =
+	    (clib_net_to_host_u32
+	     (ip0->ip_version_traffic_class_and_flow_label) >> 28) !=
+	    6 ? IP6_ERROR_VERSION : error0;
+
+	  /* hop limit < 1? Drop it. for link-local broadcast packets,
+	   * like dhcpv6 packets from client has hop-limit 1, which should not
+	   * be dropped.
+	   */
+	  error0 = ip0->hop_limit < 1 ? IP6_ERROR_TIME_EXPIRED : error0;
+
+	  /* L2 length must be at least minimal IP header. */
+	  error0 =
+	    p0->current_length <
+	    sizeof (ip0[0]) ? IP6_ERROR_TOO_SHORT : error0;
+
+	  if (PREDICT_FALSE (error0 != IP6_ERROR_NONE))
+	    {
+	      if (error0 == IP6_ERROR_TIME_EXPIRED)
+		{
+		  icmp6_error_set_vnet_buffer (p0, ICMP6_time_exceeded,
+					       ICMP6_time_exceeded_ttl_exceeded_in_transit,
+					       0);
+		  next0 = IP6_INPUT_NEXT_ICMP_ERROR;
+		}
+	      else
+		{
+		  next0 = IP6_INPUT_NEXT_DROP;
+		}
+	    }
+	  p0->error = error_node->errors[error0];
+
+	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+					   to_next, n_left_to_next,
+					   pi0, next0);
+	}
+
+      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+    }
+
+  return frame->n_vectors;
+}
+
+static char *ip6_error_strings[] = {
+#define _(sym,string) string,
+  foreach_ip6_error
+#undef _
+};
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (ip6_input_node) = {
+  .function = ip6_input,
+  .name = "ip6-input",
+  .vector_size = sizeof (u32),
+
+  .n_errors = IP6_N_ERROR,
+  .error_strings = ip6_error_strings,
+
+  .n_next_nodes = IP6_INPUT_N_NEXT,
+  .next_nodes = {
+    [IP6_INPUT_NEXT_DROP] = "error-drop",
+    [IP6_INPUT_NEXT_LOOKUP] = "ip6-lookup",
+    [IP6_INPUT_NEXT_ICMP_ERROR] = "ip6-icmp-error",
+  },
+
+  .format_buffer = format_ip6_header,
+  .format_trace = format_ip6_input_trace,
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FUNCTION_MULTIARCH (ip6_input_node, ip6_input)
+     static clib_error_t *ip6_init (vlib_main_t * vm)
+{
+  ethernet_register_input_type (vm, ETHERNET_TYPE_IP6, ip6_input_node.index);
+  ppp_register_input_protocol (vm, PPP_PROTOCOL_ip6, ip6_input_node.index);
+  hdlc_register_input_protocol (vm, HDLC_PROTOCOL_ip6, ip6_input_node.index);
+
+  {
+    pg_node_t *pn;
+    pn = pg_get_node (ip6_input_node.index);
+    pn->unformat_edit = unformat_pg_ip6_header;
+  }
+
+  /* Set flow hash to something non-zero. */
+  ip6_main.flow_hash_seed = 0xdeadbeef;
+
+  /* Default hop limit for packets we generate. */
+  ip6_main.host_config.ttl = 64;
+
+  return /* no error */ 0;
+}
+
+VLIB_INIT_FUNCTION (ip6_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */