In-band OAM active probe (VPP-471)

Change-Id: Icf0ddf76ba1c8b588c79387284cd0349ebc6e45f
Signed-off-by: AkshayaNadahalli <anadahal@cisco.com>

1 files changed, 83 insertions, 0 deletions

diff --git a/src/plugins/ioam/udp-ping/udp_ping_util.h b/src/plugins/ioam/udp-ping/udp_ping_util.h
new file mode 100644
index 00000000000..fcaf27bd485
--- /dev/null
+++ b/src/plugins/ioam/udp-ping/udp_ping_util.h
@@ -0,0 +1,83 @@
+/*
+ * 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_UDP_PING_UDP_PING_UTIL_H_
+#define PLUGINS_IOAM_PLUGIN_IOAM_UDP_PING_UDP_PING_UTIL_H_
+
+int udp_ping_create_ip6_pak (u8 * buf,	/*u16 len, */
+			     ip6_address_t src, ip6_address_t dst,
+			     u16 src_port, u16 dst_port,
+			     u8 msg_type, u16 ctx);
+
+int
+udp_ping_compare_flow (ip46_address_t src, ip46_address_t dst,
+		       u16 start_src_port, u16 end_src_port,
+		       u16 start_dst_port, u16 end_dst_port,
+		       ip46_udp_ping_flow * flow);
+
+void
+udp_ping_populate_flow (ip46_address_t src, ip46_address_t dst,
+			u16 start_src_port, u16 end_src_port,
+			u16 start_dst_port, u16 end_dst_port,
+			u16 interval, u8 fault_det,
+			ip46_udp_ping_flow * flow);
+
+void udp_ping_free_flow_data (ip46_udp_ping_flow * flow);
+
+void udp_ping_create_rewrite (ip46_udp_ping_flow * flow, u16 ctx);
+
+void udp_ping_send_ip6_pak (vlib_main_t * vm, ip46_udp_ping_flow * flow);
+
+/**
+ * @brief Create and send ipv6 udp-ping response packet.
+ *
+ */
+always_inline void
+udp_ping_create_reply_from_probe_ip6 (ip6_header_t * ip,
+				      ip6_hop_by_hop_header_t * hbh,
+				      udp_ping_t * udp)
+{
+  ip6_address_t src;
+  u16 src_port;
+  ioam_trace_option_t *trace;
+
+  src = ip->src_address;
+
+  ip->src_address = ip->dst_address;
+  ip->dst_address = src;
+
+  trace = (ioam_trace_option_t *)
+    ip6_hbh_get_option (hbh, HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST);
+  ip6_hbh_ioam_trace_reset_bit (trace, BIT_LOOPBACK);
+
+  /* No need of endian transform */
+  src_port = udp->udp.src_port;
+
+  udp->udp.src_port = udp->udp.dst_port;
+  udp->udp.dst_port = src_port;
+  udp->udp.checksum = 0;	//FIXME
+
+  udp->ping_data.msg_type = UDP_PING_REPLY;
+}
+
+#endif /* PLUGINS_IOAM_PLUGIN_IOAM_UDP_PING_UDP_PING_UTIL_H_ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */