Raw export of IP6 packet with iOAM metadata

- is enabled on iOAM pop nodes with "set ioam export ipfix collector"
- ioam_export_node Hooks into vlib graph b/n ip6-hop-by-hop node and ip6-pop-hop-by-hop node
- A buffer per worker thread is created for collecting packet data to be exported
- ioam_export_node exports first 3 cachelines by collecting it in a MTU sized frame, slaps on ipfix header for export
- ioam_export_thread process node - checks for unsent record buffers for longer than 20 seconds and exports it
- Added dual loop and prefetch in add, hop-by-hop and pop functions

To be done:
- IPfix template
- Multi collector distribution of ipfix packets
- Port to be configurable

Change-Id: I959b4253036551382562bdaf10a83fd6f2f1c88b
Signed-off-by: Shwetha <shwethab@cisco.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/plugins/ioam-plugin/ioam/export/ioam_export.api b/plugins/ioam-plugin/ioam/export/ioam_export.api
new file mode 100644
index 00000000000..f22d9fc8ebe
--- /dev/null
+++ b/plugins/ioam-plugin/ioam/export/ioam_export.api
@@ -0,0 +1,42 @@
+/* Hey Emacs use -*- mode: C -*- */
+/*
+ * Copyright (c) 2016 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.
+ */
+
+/* Define a simple binary API to control the feature */
+
+define ioam_export_ip6_enable_disable {
+    /* Client identifier, set from api_main.my_client_index */
+    u32 client_index;
+
+    /* Arbitrary context, so client can match reply to request */
+    u32 context;
+
+    /* Enable / disable the feature */
+    u8 is_disable;
+
+    /* Collector ip address */
+    u8 collector_address[4];
+    u8 src_address[4];
+
+    /* Src ip address */
+};
+
+define ioam_export_ip6_enable_disable_reply {
+    /* From the request */
+    u32 context;
+
+    /* Return value, zero means all OK */
+    i32 retval;
+};