VPP-632 : InBand OAM Analyser

Refer to jira ticket for more details.

Change-Id: I6facb9ef8553a21464f9a2e612706f152badbb68
Signed-off-by: AkshayaNadahalli <anadahal@cisco.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/src/plugins/ioam/ipfixcollector/ipfixcollector.c b/src/plugins/ioam/ipfixcollector/ipfixcollector.c
new file mode 100644
index 00000000000..4ae47edcb3c
--- /dev/null
+++ b/src/plugins/ioam/ipfixcollector/ipfixcollector.c
@@ -0,0 +1,105 @@
+/*
+ * 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.
+ */
+
+#include <vnet/ip/ip.h>
+#include <vnet/plugin/plugin.h>
+#include <vnet/ip/udp.h>
+#include <ioam/ipfixcollector/ipfixcollector.h>
+
+ipfix_collector_main_t ipfix_collector_main;
+
+/**
+ * @brief IP-FIX SetID registration function.
+ *
+ * This function can be used by other VPP graph nodes to receive IP-FIX packets
+ * with a particular setid.
+ *
+ * @param vlib_main_t Vlib main of the graph node which is interseted in
+ *                    getting IP-Fix packet.
+ * @param ipfix_client_add_del_t Structure describing the client node which
+ *                               is interested in getting the IP-Fix packets for
+ *                               a SetID.
+ *
+ * @returns 0 on success.
+ * @returns Error codes(<0) otherwise.
+ */
+int
+ipfix_collector_reg_setid (vlib_main_t * vm, ipfix_client_add_del_t * info)
+{
+  ipfix_collector_main_t *cm = &ipfix_collector_main;
+  uword *p = NULL;
+  int i;
+  ipfix_client *client = 0;
+
+  if ((!info) || (!info->client_name))
+    return IPFIX_COLLECTOR_ERR_INVALID_PARAM;
+
+  p = hash_get (cm->client_reg_table, info->ipfix_setid);
+  client = p ? pool_elt_at_index (cm->client_reg_pool, (*p)) : NULL;
+
+  if (info->del)
+    {
+      if (!client)
+	return 0;		//There is no registered handler, so send success
+
+      hash_unset (cm->client_reg_table, info->ipfix_setid);
+      vec_free (client->client_name);
+      pool_put (cm->client_reg_pool, client);
+      return 0;
+    }
+
+  if (client)
+    return IPFIX_COLLECTOR_ERR_REG_EXISTS;
+
+  pool_get (cm->client_reg_pool, client);
+  i = client - cm->client_reg_pool;
+  client->client_name = vec_dup (info->client_name);
+  client->client_node = info->client_node;
+  client->client_next_node = vlib_node_add_next (vm,
+						 ipfix_collector_node.index,
+						 client->client_node);
+  client->set_id = info->ipfix_setid;
+
+  hash_set (cm->client_reg_table, info->ipfix_setid, i);
+  return 0;
+}
+
+static clib_error_t *
+ipfix_collector_init (vlib_main_t * vm)
+{
+  clib_error_t *error = 0;
+  ipfix_collector_main_t *cm = &ipfix_collector_main;
+
+  cm->vlib_main = vm;
+  cm->vnet_main = vnet_get_main ();
+
+  cm->client_reg_pool = NULL;
+  cm->client_reg_table = hash_create (0, sizeof (uword));
+
+  udp_register_dst_port (vm,
+			 UDP_DST_PORT_ipfix,
+			 ipfix_collector_node.index, 1 /* is_ip4 */ );
+  return error;
+}
+
+VLIB_INIT_FUNCTION (ipfix_collector_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */