1 files changed, 127 insertions, 0 deletions
diff --git a/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.h b/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.h
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+++ b/src/plugins/ioam/analyse/ip6/ip6_ioam_analyse.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 PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_
+#define PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_
+
+#include <ioam/analyse/ioam_analyse.h>
+#include <vnet/ip/ip6_hop_by_hop.h>
+#include <ioam/encap/ip6_ioam_trace.h>
+
+/** @brief IP6-iOAM analyser main structure.
+    @note cache aligned.
+*/
+typedef struct
+{
+  /** Array of function pointer to analyse each hop-by-hop option. */
+  int (*analyse_hbh_handler[MAX_IP6_HBH_OPTION]) (u32 flow_id,
+						  ip6_hop_by_hop_option_t *
+						  opt, u16 len);
+
+  /** This contains the aggregated data from the time VPP started analysing. */
+  ioam_analyser_data_t *aggregated_data;
+
+} ip6_ioam_analyser_main_t;
+
+extern ip6_ioam_analyser_main_t ioam_analyser_main;
+
+extern vlib_node_registration_t analyse_node_local;
+extern vlib_node_registration_t analyse_node_remote;
+
+void ip6_ioam_analyse_register_handlers (void);
+
+void ip6_ioam_analyse_unregister_handlers (void);
+
+clib_error_t *ip6_ioam_analyse_init (vlib_main_t * vm);
+
+inline static ioam_analyser_data_t *
+ioam_analyse_get_data_from_flow_id (u32 flow_id)
+{
+  if (flow_id >= vec_len (ioam_analyser_main.aggregated_data))
+    return NULL;
+
+  if (ioam_analyser_main.aggregated_data[flow_id].is_free)
+    ioam_analyser_main.aggregated_data[flow_id].is_free = 0;
+
+  return (ioam_analyser_main.aggregated_data + flow_id);
+}
+
+always_inline void *
+ip6_ioam_find_hbh_option (ip6_hop_by_hop_header_t * hbh0, u8 option)
+{
+  ip6_hop_by_hop_option_t *opt0, *limit0;
+  u8 type0;
+
+  opt0 = (ip6_hop_by_hop_option_t *) (hbh0 + 1);
+  limit0 =
+    (ip6_hop_by_hop_option_t *) ((u8 *) hbh0 + ((hbh0->length + 1) << 3));
+
+  while (opt0 < limit0)
+    {
+      type0 = opt0->type;
+      if (type0 == option)
+	return ((void *) opt0);
+
+      if (0 == type0)
+	{
+	  opt0 = (ip6_hop_by_hop_option_t *) ((u8 *) opt0) + 1;
+	  continue;
+	}
+      opt0 = (ip6_hop_by_hop_option_t *)
+	(((u8 *) opt0) + opt0->length + sizeof (ip6_hop_by_hop_option_t));
+    }
+
+  return NULL;
+}
+
+always_inline int
+ip6_ioam_analyse_compare_path_delay (ip6_hop_by_hop_header_t * hbh0,
+				     ip6_hop_by_hop_header_t * hbh1,
+				     bool oneway)
+{
+  ioam_trace_option_t *trace0 = NULL, *trace1 = NULL;
+  f64 delay0, delay1;
+
+  trace0 =
+    ip6_ioam_find_hbh_option (hbh0, HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST);
+  trace1 =
+    ip6_ioam_find_hbh_option (hbh1, HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST);
+
+  if (PREDICT_FALSE ((trace0 == NULL) && (trace1 == NULL)))
+    return 0;
+
+  if (PREDICT_FALSE (trace1 == NULL))
+    return 1;
+
+  if (PREDICT_FALSE (trace0 == NULL))
+    return -1;
+
+  delay0 = ip6_ioam_analyse_calc_delay (&trace0->trace_hdr,
+					trace0->hdr.length - 2, oneway);
+  delay1 = ip6_ioam_analyse_calc_delay (&trace1->trace_hdr,
+					trace1->hdr.length - 2, oneway);
+
+  return (delay0 - delay1);
+}
+
+#endif /* PLUGINS_IOAM_PLUGIN_IOAM_ANALYSE_IP6_IOAM_ANALYSE_NODE_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */