summaryrefslogtreecommitdiffstats
path: root/hicn-plugin/src/faces/udp
diff options
context:
space:
mode:
Diffstat (limited to 'hicn-plugin/src/faces/udp')
-rwxr-xr-xhicn-plugin/src/faces/udp/dpo_udp.c158
-rwxr-xr-xhicn-plugin/src/faces/udp/dpo_udp.h312
-rwxr-xr-xhicn-plugin/src/faces/udp/face_udp.c371
-rwxr-xr-xhicn-plugin/src/faces/udp/face_udp.h248
-rwxr-xr-xhicn-plugin/src/faces/udp/face_udp_cli.c164
-rwxr-xr-xhicn-plugin/src/faces/udp/face_udp_node.c864
-rwxr-xr-xhicn-plugin/src/faces/udp/face_udp_node.h35
-rwxr-xr-xhicn-plugin/src/faces/udp/iface_udp_node.c894
-rwxr-xr-xhicn-plugin/src/faces/udp/iface_udp_node.h36
9 files changed, 3082 insertions, 0 deletions
diff --git a/hicn-plugin/src/faces/udp/dpo_udp.c b/hicn-plugin/src/faces/udp/dpo_udp.c
new file mode 100755
index 000000000..e58fc9788
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/dpo_udp.c
@@ -0,0 +1,158 @@
+/*
+ * Copyright (c) 2017-2019 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 "dpo_udp.h"
+
+#include <vnet/ip/format.h>
+#include <vnet/adj/adj.h>
+#include <vnet/vnet.h>
+#include <vlib/vlib.h>
+
+const static char *const hicn_face_ip4udp_nodes[] = {
+ "hicn-face-encap-udp4",
+ "hicn-face-decap-udp4",
+ "hicn-iface-decap-udp4",
+ "hicn-iface-encap-udp4",
+ NULL,
+};
+
+const static char *const hicn_face_ip6udp_nodes[] = {
+ "hicn-face-encap-udp6",
+ "hicn-face-decap-udp6",
+ "hicn-iface-decap-udp6",
+ "hicn-iface-encap-udp6",
+ NULL,
+};
+
+const static char *const *const hicn_ipudp_nodes[DPO_PROTO_NUM] = {
+ [DPO_PROTO_IP4] = hicn_face_ip4udp_nodes,
+ [DPO_PROTO_IP6] = hicn_face_ip6udp_nodes
+};
+
+
+const static dpo_vft_t hicn_dpoi_udp_vft = {
+ .dv_lock = hicn_face_lock,
+ .dv_unlock = hicn_face_unlock,
+ .dv_format = format_hicn_face_udp,
+};
+
+/* Must be executed after all the strategy nodes are created */
+void
+hicn_dpo_udp_module_init (void)
+{
+ mhash_init (&hicn_face_udp_hashtb, sizeof (hicn_face_id_t) /* value */ ,
+ sizeof (hicn_face_udp_key_t) /* key */ );
+
+ /*
+ * How much useful is the following registration?
+ * So far it seems that we need it only for setting the dpo_type.
+ */
+ hicn_face_udp_type =
+ dpo_register_new_type (&hicn_dpoi_udp_vft, hicn_ipudp_nodes);
+}
+
+
+/* Here udp ports are in host order, move them to network order to do the lookup */
+int
+hicn_dpo_udp4_create (dpo_id_t * dpo,
+ const ip4_address_t * src_ip,
+ const ip4_address_t * dst_ip,
+ u16 src_port, u16 dst_port,
+ u32 sw_if,
+ adj_index_t ip_adj,
+ u32 node_index,
+ hicn_face_flags_t flags, hicn_face_id_t * face_id)
+{
+ u16 net_src_port = clib_host_to_net_u16 (src_port);
+ u16 net_dst_port = clib_host_to_net_u16 (dst_port);
+ hicn_face_t *face = hicn_face_udp4_get (src_ip, dst_ip, src_port, dst_port);
+
+ u8 is_appface;
+ /* ip_csum_t sum0; */
+
+ if (face != NULL)
+ return HICN_ERROR_FACE_ALREADY_CREATED;
+
+ hicn_dpo_udp4_add_and_lock (dpo, src_ip, dst_ip, net_src_port, net_dst_port,
+ node_index, &is_appface);
+
+ face = hicn_dpoi_get_from_idx (dpo->dpoi_index);
+
+ hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
+
+ udp_face->hdrs.ip4.ip.checksum =
+ ip4_header_checksum (&(udp_face->hdrs.ip4.ip));
+
+ face->shared.flags = flags;
+ face->shared.adj = ip_adj;
+ face->shared.sw_if = sw_if;
+ *face_id = hicn_dpoi_get_index (face);
+
+ return HICN_ERROR_NONE;
+}
+
+
+int
+hicn_dpo_udp6_create (dpo_id_t * dpo,
+ const ip6_address_t * src_ip,
+ const ip6_address_t * dst_ip,
+ u16 src_port, u16 dst_port,
+ u32 sw_if,
+ adj_index_t ip_adj,
+ u32 node_index,
+ hicn_face_flags_t flags, hicn_face_id_t * face_id)
+{
+ u16 net_src_port = clib_host_to_net_u16 (src_port);
+ u16 net_dst_port = clib_host_to_net_u16 (dst_port);
+ hicn_face_t *face =
+ hicn_face_udp6_get (src_ip, dst_ip, net_src_port, net_dst_port);
+ u8 is_appface;
+
+ if (face != NULL)
+ return HICN_ERROR_FACE_ALREADY_CREATED;
+
+ hicn_dpo_udp6_add_and_lock (dpo, src_ip, dst_ip, net_src_port, net_dst_port,
+ node_index, &is_appface);
+
+ face = hicn_dpoi_get_from_idx (dpo->dpoi_index);
+
+ face->shared.flags = flags;
+ face->shared.adj = ip_adj;
+ face->shared.sw_if = sw_if;
+ *face_id = hicn_dpoi_get_index (face);
+
+ return HICN_ERROR_NONE;
+}
+
+void
+hicn_dpo_udp_create_from_face (hicn_face_t * face, dpo_id_t * dpo,
+ u16 dpoi_next_node)
+{
+ hicn_face_id_t face_dpoi_id = hicn_dpoi_get_index (face);
+ hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
+ u8 version =
+ (face_udp->hdrs.ip4.ip.ip_version_and_header_length & 0xf0) >> 4;
+ dpo_set (dpo, face->shared.face_type,
+ version == 4 ? DPO_PROTO_IP4 : DPO_PROTO_IP6, face_dpoi_id);
+ dpo->dpoi_next_node = dpoi_next_node;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/dpo_udp.h b/hicn-plugin/src/faces/udp/dpo_udp.h
new file mode 100755
index 000000000..fdde4192b
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/dpo_udp.h
@@ -0,0 +1,312 @@
+/*
+ * Copyright (c) 2017-2019 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 __HICN_DPO_UDP_H__
+#define __HICN_DPO_UDP_H__
+
+#include <vnet/adj/adj_types.h>
+#include <vnet/ip/ip4_packet.h>
+#include <vnet/ip/ip6_packet.h>
+
+#include "face_udp.h"
+#include "../face.h"
+#include "../../error.h"
+
+
+/**
+ * @brief Initialize the internal structures of the dpo udp face module.
+ */
+void hicn_dpo_udp_module_init (void);
+
+/**
+ * @brief Create a udp face and its corresponding dpo. Meant to be used for the
+ * control plane.
+ *
+ * @param dpo: Data plane object that point to the face created.
+ * @param local_addr: Local address of the UDP tunnel
+ * @param remote_addr: Remote address of the UDP tunnel
+ * @param local_port: Local port of the UDP tunnel
+ * @param remote_port: Remote port of the UDP tunnel
+ * @param adj: Ip adjacency corresponding to the remote address in the face
+ * @param node_index: vlib edge index to use in the packet processing
+ * @param flags: Flags of the face
+ * @param face_id: Identifier for the face (dpoi_index)
+ * @return HICN_ERROR_FACE_ALREADY_CREATED if the face exists, otherwise HICN_ERROR_NONE
+ */
+int
+hicn_dpo_udp4_create (dpo_id_t * dpo,
+ const ip4_address_t * local_addr,
+ const ip4_address_t * remote_addr,
+ u16 local_port, u16 remote_port,
+ u32 sw_if,
+ adj_index_t adj,
+ u32 node_index,
+ hicn_face_flags_t flags, hicn_face_id_t * face_id);
+
+/**
+ * @brief Retrieve a face using the face identifier, i.e., the quadruplet (local_addr, remote_addr,
+ * local_port, remote_port). This method adds a lock on the face state.
+ *
+ * @param dpo: Result of the lookup. If the face doesn't exist dpo = NULL
+ * @param local_addr: Local address of the UDP tunnel
+ * @param remote_addr: Remote address of the UDP tunnel
+ * @param local_port: Local port of the UDP tunnel
+ * @param remote_port: Remote port of the UDP tunnel
+ * @param is_appface: Boolean that indicates whether the face is an application
+ * face or not. (Currently only IP faces can be appface)
+ *
+ * @result HICN_ERROR_FACE_NOT_FOUND if the face does not exist, otherwise HICN_ERROR_NONE.
+ */
+always_inline int
+hicn_dpo_udp4_lock (dpo_id_t * dpo,
+ const ip4_address_t * local_addr,
+ const ip4_address_t * remote_addr,
+ u16 local_port, u16 remote_port, u8 * is_appface)
+{
+ hicn_face_t *face =
+ hicn_face_udp4_get (local_addr, remote_addr, local_port, remote_port);
+
+ if (PREDICT_FALSE (face == NULL))
+ return HICN_ERROR_FACE_NOT_FOUND;
+
+ index_t dpoi_index = hicn_dpoi_get_index (face);
+ dpo_set (dpo, hicn_face_udp_type, DPO_PROTO_IP4, dpoi_index);
+ dpo->dpoi_next_node = ~0;
+ dpo_lock (dpo);
+
+ *is_appface = 0;
+
+ return HICN_ERROR_NONE;
+}
+
+/**
+ * @brief Retrieve, or create if it doesn't exist, a face from the face
+ * identifier (local_addr, remote_addr, local_port, remote_port) and returns its
+ * dpo. This method adds a lock on the face state.
+ *
+ * @param dpo: Result of the lookup
+ * @param local_addr: Local address of the UDP tunnel
+ * @param remote_addr: Remote address of the UDP tunnel
+ * @param local_port: Local port of the UDP tunnel
+ * @param remote_port: Remote port of the UDP tunnel
+ * @param is_appface: Boolean that indicates whether the face is an application
+ * face or not. (Currently only IP faces can be appface)
+ * @param node_index: vlib edge index to use in the packet processing
+ */
+always_inline void
+hicn_dpo_udp4_add_and_lock (dpo_id_t * dpo,
+ const ip4_address_t * local_addr,
+ const ip4_address_t * remote_addr,
+ u16 local_port, u16 remote_port,
+ u32 node_index, u8 * is_appface)
+{
+ hicn_face_t *face =
+ hicn_face_udp4_get (local_addr, remote_addr, local_port, remote_port);
+
+ if (face == NULL)
+ {
+ pool_get (hicn_dpoi_face_pool, face);
+
+ hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
+
+ clib_memcpy (&(udp_face->hdrs.ip4.ip), &ip4_header_skl,
+ sizeof (ip4_header_t));
+ clib_memcpy (&(udp_face->hdrs.ip4.ip.src_address), local_addr,
+ sizeof (ip4_address_t));
+ clib_memcpy (&(udp_face->hdrs.ip4.ip.dst_address), remote_addr,
+ sizeof (ip4_address_t));
+
+ udp_face->hdrs.ip4.udp.src_port = local_port;
+ udp_face->hdrs.ip4.udp.dst_port = remote_port;
+
+ face->shared.adj = ADJ_INDEX_INVALID;
+ face->shared.pl_id = (u16) 0;
+ face->shared.face_type = hicn_face_udp_type;
+ face->shared.flags = HICN_FACE_FLAGS_IFACE;
+ face->shared.locks = 0;
+
+ hicn_face_udp_key_t key;
+ hicn_face_udp4_get_key (local_addr, remote_addr, local_port,
+ remote_port, &key);
+ hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
+
+ mhash_set_mem (&hicn_face_udp_hashtb, &key, (uword *) & dpoi_index, 0);
+ face = face;
+
+ *is_appface = 0;
+ dpo_set (dpo, hicn_face_udp_type, DPO_PROTO_IP4, dpoi_index);
+ dpo->dpoi_next_node = node_index;
+ dpo_lock (dpo);
+
+ return;
+ }
+
+ *is_appface = 0;
+
+ hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
+ dpo_set (dpo, hicn_face_udp_type, DPO_PROTO_IP4, dpoi_index);
+ dpo->dpoi_next_node = node_index;
+ dpo_lock (dpo);
+}
+
+/**
+ * @brief Create a udp face and its corresponding dpo. Meant to be used for the
+ * control plane.
+ *
+ * @param dpo: Data plane object that point to the face created.
+ * @param local_addr: Local address of the UDP tunnel
+ * @param remote_addr: Remote address of the UDP tunnel
+ * @param local_port: Local port of the UDP tunnel
+ * @param remote_port: Remote port of the UDP tunnel
+ * @param adj: Ip adjacency corresponding to the remote address in the face
+ * @param node_index: vlib edge index to use in the packet processing
+ * @param flags: Flags of the face
+ * @param face_id: Identifier for the face (dpoi_index)
+ * @return HICN_ERROR_FACE_ALREADY_CREATED if the face exists, otherwise HICN_ERROR_NONE
+ */
+int
+hicn_dpo_udp6_create (dpo_id_t * dpo,
+ const ip6_address_t * local_addr,
+ const ip6_address_t * remote_addr,
+ u16 local_port, u16 remote_port,
+ u32 sw_if,
+ adj_index_t adj,
+ u32 node_index,
+ hicn_face_flags_t flags, hicn_face_id_t * face_id);
+
+
+/**
+ * @brief Retrieve a face using the face identifier, i.e., the quadruplet (local_addr, remote_addr,
+ * local_port, remote_port). This method adds a lock on the face state.
+ *
+ * @param dpo: Result of the lookup. If the face doesn't exist dpo = NULL
+ * @param local_addr: Local address of the UDP tunnel
+ * @param remote_addr: Remote address of the UDP tunnel
+ * @param local_port: Local port of the UDP tunnel
+ * @param remote_port: Remote port of the UDP tunnel
+ * @param is_appface: Boolean that indicates whether the face is an application
+ * face or not. (Currently only IP faces can be appface)
+ *
+ * @result HICN_ERROR_FACE_NOT_FOUND if the face does not exist, otherwise HICN_ERROR_NONE.
+ */
+always_inline int
+hicn_dpo_udp6_lock (dpo_id_t * dpo,
+ const ip6_address_t * local_addr,
+ const ip6_address_t * remote_addr,
+ u16 local_port, u16 remote_port, u8 * is_appface)
+{
+ hicn_face_t *face =
+ hicn_face_udp6_get (local_addr, remote_addr, local_port, remote_port);
+
+
+ if (PREDICT_FALSE (face == NULL))
+ return HICN_ERROR_FACE_NOT_FOUND;
+
+ hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
+ dpo_set (dpo, hicn_face_udp_type, DPO_PROTO_IP4, dpoi_index);
+ dpo->dpoi_next_node = ~0;
+ dpo_lock (dpo);
+ *is_appface = 0;
+
+ return HICN_ERROR_NONE;
+}
+
+/**
+ * @brief Retrieve, or create if it doesn't exist, a face from the face
+ * identifier (local_addr, remote_addr, local_port, remote_port) and returns its
+ * dpo. This method adds a lock on the face state.
+ *
+ * @param dpo: Result of the lookup
+ * @param local_addr: Local address of the UDP tunnel
+ * @param remote_addr: Remote address of the UDP tunnel
+ * @param local_port: Local port of the UDP tunnel
+ * @param remote_port: Remote port of the UDP tunnel
+ * @param is_appface: Boolean that indicates whether the face is an application
+ * face or not. (Currently only IP faces can be appface)
+ * @param node_index: vlib edge index to use in the packet processing
+ */
+always_inline void
+hicn_dpo_udp6_add_and_lock (dpo_id_t * dpo,
+ const ip6_address_t * local_addr,
+ const ip6_address_t * remote_addr,
+ u16 local_port, u16 remote_port,
+ u32 node_index, u8 * is_appface)
+{
+ hicn_face_t *face =
+ hicn_face_udp6_get (local_addr, remote_addr, local_port, remote_port);
+
+ if (face == NULL)
+ {
+ pool_get (hicn_dpoi_face_pool, face);
+
+ hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
+
+ clib_memcpy (&(udp_face->hdrs.ip6.ip), &ip6_header_skl,
+ sizeof (ip6_header_t));
+ clib_memcpy (&(udp_face->hdrs.ip6.ip.src_address), local_addr,
+ sizeof (ip6_address_t));
+ clib_memcpy (&(udp_face->hdrs.ip6.ip.dst_address), remote_addr,
+ sizeof (ip6_address_t));
+
+ udp_face->hdrs.ip6.udp.src_port = local_port;
+ udp_face->hdrs.ip6.udp.dst_port = remote_port;
+
+ face->shared.adj = ADJ_INDEX_INVALID;
+ face->shared.pl_id = (u16) 0;
+ face->shared.face_type = hicn_face_udp_type;
+ face->shared.flags = HICN_FACE_FLAGS_IFACE;
+ face->shared.locks = 0;
+
+ hicn_face_udp_key_t key;
+ hicn_face_udp6_get_key (local_addr, remote_addr, local_port,
+ remote_port, &key);
+ hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
+
+ mhash_set_mem (&hicn_face_udp_hashtb, &key, (uword *) & dpoi_index, 0);
+
+ *is_appface = 0;
+ dpo_set (dpo, hicn_face_udp_type, DPO_PROTO_IP6, dpoi_index);
+ dpo->dpoi_next_node = node_index;
+ dpo_lock (dpo);
+
+ return;
+ }
+
+ *is_appface = 0;
+
+ hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
+ dpo_set (dpo, hicn_face_udp_type, DPO_PROTO_IP6, dpoi_index);
+ dpo->dpoi_next_node = node_index;
+ dpo_lock (dpo);
+}
+
+/**
+ * @brief Create a dpo from a udp face
+ *
+ * @param face Face from which to create the dpo
+ * @return the dpo
+ */
+void hicn_dpo_udp_create_from_face (hicn_face_t * face, dpo_id_t * dpo,
+ u16 dpoi_next_node);
+
+#endif // __HICN_DPO_UDP_H__
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/face_udp.c b/hicn-plugin/src/faces/udp/face_udp.c
new file mode 100755
index 000000000..92335273a
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/face_udp.c
@@ -0,0 +1,371 @@
+/*
+ * Copyright (c) 2017-2019 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 <vlib/vlib.h>
+#include <vnet/vnet.h>
+
+#include "face_udp.h"
+#include "face_udp_node.h"
+#include "dpo_udp.h"
+#include "../face.h"
+#include "../../strategy.h"
+#include "../../strategy_dpo_manager.h"
+#include "../../hicn.h"
+
+#include "../../mapme.h" // HICN_MAPME_EVENT_*
+#include "../../mapme_eventmgr.h" // hicn_mapme_eventmgr_process_node
+extern vlib_node_registration_t hicn_mapme_eventmgr_process_node;
+
+mhash_t hicn_face_udp_hashtb;
+
+dpo_type_t hicn_face_udp_type;
+
+ip4_header_t ip4_header_skl = {
+ .ip_version_and_header_length = 0x45,
+ .tos = 0x00,
+ .length = (u16) 0,
+ .fragment_id = (u16) 0,
+ .flags_and_fragment_offset = (u16) 0,
+ .ttl = 254,
+ .protocol = IP_PROTOCOL_UDP,
+ .checksum = 0,
+ .src_address = {{0}},
+ .dst_address = {{0}},
+};
+
+ip6_header_t ip6_header_skl = {
+#if CLIB_ARCH_IS_BIG_ENDIAN
+ .ip_version_traffic_class_and_flow_label = 0x60000000,
+#else
+ .ip_version_traffic_class_and_flow_label = 0x00000060,
+#endif
+ .payload_length = (u16) 0,
+ .protocol = IP_PROTOCOL_UDP,
+ .hop_limit = 254,
+ .src_address = {{0}},
+ .dst_address = {{0}}
+};
+
+u32 strategy_face_udp4_vlib_edge;
+u32 strategy_face_udp6_vlib_edge;
+
+/* Separated from the hicn_face_udp_init because it cannot be called by the
+ init macro due to dependencies with other modules not yet initialied */
+void
+hicn_face_udp_init_internal ()
+{
+ ip4_header_t *ip4_hdr = &ip4_header_skl;
+ ip4_header_skl.checksum = ip4_header_checksum (ip4_hdr);
+}
+
+void
+hicn_face_udp_init (vlib_main_t * vm)
+{
+ int strategy_nodes_n = hicn_strategy_get_all_available ();
+
+ /* Default Strategy has index 0 and it always exists */
+ strategy_face_udp4_vlib_edge = vlib_node_add_next (vm,
+ hicn_dpo_get_strategy_vft
+ (default_dpo.
+ hicn_dpo_get_type ())->
+ get_strategy_node_index
+ (),
+ hicn_face_udp4_output_node.
+ index);
+ strategy_face_udp6_vlib_edge =
+ vlib_node_add_next (vm,
+ hicn_dpo_get_strategy_vft (default_dpo.
+ hicn_dpo_get_type ())->
+ get_strategy_node_index (),
+ hicn_face_udp6_output_node.index);
+
+ /*
+ * Create and edge between al the other strategy nodes
+ * and the udp_output nodes.
+ */
+ for (int i = 1; i < strategy_nodes_n; i++)
+ {
+ u32 temp_index4 = vlib_node_add_next (vm,
+ hicn_dpo_get_strategy_vft_from_id
+ (i)->get_strategy_node_index (),
+ hicn_face_udp4_output_node.index);
+ u32 temp_index6 = vlib_node_add_next (vm,
+ hicn_dpo_get_strategy_vft_from_id
+ (i)->get_strategy_node_index (),
+ hicn_face_udp6_output_node.index);
+ ASSERT (temp_index4 == strategy_face_udp4_vlib_edge);
+ ASSERT (temp_index6 == strategy_face_udp6_vlib_edge);
+ }
+
+ hicn_dpo_udp_module_init ();
+
+ register_face_type (hicn_face_udp_type, &udp_vft, "udp");;
+}
+
+int
+hicn_face_udp_add (const ip46_address_t * local_addr,
+ const ip46_address_t * remote_addr, u16 local_port,
+ u16 remote_port, u32 swif, hicn_face_id_t * pfaceid)
+{
+ fib_protocol_t fib_type;
+ vnet_link_t link_type;
+ adj_index_t ip_adj;
+ int ret = HICN_ERROR_NONE;
+ dpo_proto_t dpo_proto;
+
+ hicn_face_flags_t flags = (hicn_face_flags_t) 0;
+ flags |= HICN_FACE_FLAGS_FACE;
+
+
+ if (ip46_address_is_ip4 (local_addr) && ip46_address_is_ip4 (remote_addr))
+ {
+ link_type = VNET_LINK_IP4;
+ fib_type = FIB_PROTOCOL_IP4;
+ ip_adj = adj_nbr_add_or_lock (fib_type, link_type, remote_addr, swif);
+
+ hicn_face_t *face =
+ hicn_face_udp4_get (&local_addr->ip4, &remote_addr->ip4, local_port,
+ remote_port);
+
+ if (face != NULL)
+ return HICN_ERROR_FACE_ALREADY_CREATED;
+
+ pool_get (hicn_dpoi_face_pool, face);
+
+ hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
+
+ clib_memcpy (&(udp_face->hdrs.ip4.ip), &ip4_header_skl,
+ sizeof (ip4_header_t));
+ clib_memcpy (&(udp_face->hdrs.ip4.ip.src_address), &(local_addr->ip4),
+ sizeof (ip4_address_t));
+ clib_memcpy (&(udp_face->hdrs.ip4.ip.dst_address), &(remote_addr->ip4),
+ sizeof (ip4_address_t));
+
+ udp_face->hdrs.ip4.udp.src_port = local_port;
+ udp_face->hdrs.ip4.udp.dst_port = remote_port;
+
+ ip_csum_t csum = udp_face->hdrs.ip4.ip.checksum;
+ csum = ip_csum_sub_even (csum, ip4_header_skl.src_address.as_u32);
+ csum = ip_csum_sub_even (csum, ip4_header_skl.dst_address.as_u32);
+ csum =
+ ip_csum_add_even (csum, udp_face->hdrs.ip4.ip.src_address.as_u32);
+ csum =
+ ip_csum_add_even (csum, udp_face->hdrs.ip4.ip.dst_address.as_u32);
+ udp_face->hdrs.ip4.ip.checksum = ip_csum_fold (csum);
+
+ face->shared.adj = ip_adj;
+ face->shared.sw_if = swif;
+ face->shared.pl_id = (u16) 0;
+ face->shared.face_type = hicn_face_udp_type;
+ face->shared.flags = flags;
+ face->shared.locks = 0;
+
+ hicn_face_udp_key_t key;
+ hicn_face_udp4_get_key (&local_addr->ip4, &remote_addr->ip4, local_port,
+ remote_port, &key);
+ hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
+
+ mhash_set_mem (&hicn_face_udp_hashtb, &key, (uword *) & dpoi_index, 0);
+
+ *pfaceid = hicn_dpoi_get_index (face);
+ dpo_proto = DPO_PROTO_IP4;
+ }
+ else if (!ip46_address_is_ip4 (local_addr)
+ && !ip46_address_is_ip4 (remote_addr))
+ {
+ link_type = VNET_LINK_IP6;
+ fib_type = FIB_PROTOCOL_IP6;
+ ip_adj = adj_nbr_add_or_lock (fib_type, link_type, remote_addr, swif);
+
+ hicn_face_t *face =
+ hicn_face_udp6_get (&local_addr->ip6, &remote_addr->ip6, local_port,
+ remote_port);
+
+ if (face != NULL)
+ return HICN_ERROR_FACE_ALREADY_CREATED;
+
+ pool_get (hicn_dpoi_face_pool, face);
+
+ hicn_face_udp_t *udp_face = (hicn_face_udp_t *) face->data;
+
+ clib_memcpy (&(udp_face->hdrs.ip6.ip), &ip6_header_skl,
+ sizeof (ip6_header_t));
+ clib_memcpy (&(udp_face->hdrs.ip6.ip.src_address), local_addr,
+ sizeof (ip6_address_t));
+ clib_memcpy (&(udp_face->hdrs.ip6.ip.dst_address), remote_addr,
+ sizeof (ip6_address_t));
+
+ udp_face->hdrs.ip6.udp.src_port = local_port;
+ udp_face->hdrs.ip6.udp.dst_port = remote_port;
+
+ face->shared.adj = ip_adj;
+ face->shared.sw_if = swif;
+ face->shared.pl_id = (u16) 0;
+ face->shared.face_type = hicn_face_udp_type;
+ face->shared.flags = flags;
+ face->shared.locks = 0;
+
+ hicn_face_udp_key_t key;
+ hicn_face_udp6_get_key (&local_addr->ip6, &remote_addr->ip6, local_port,
+ remote_port, &key);
+ hicn_face_id_t dpoi_index = hicn_dpoi_get_index (face);
+
+ mhash_set_mem (&hicn_face_udp_hashtb, &key, (uword *) & dpoi_index, 0);
+
+ *pfaceid = hicn_dpoi_get_index (face);
+ dpo_proto = DPO_PROTO_IP6;
+ }
+ else
+ {
+ return HICN_ERROR_IPS_ADDR_TYPE_NONUNIFORM;
+ }
+
+ retx_t *retx = vlib_process_signal_event_data (vlib_get_main (),
+ hicn_mapme_eventmgr_process_node.
+ index,
+ HICN_MAPME_EVENT_FACE_ADD, 1,
+ sizeof (retx_t));
+ *retx = (retx_t)
+ {
+ .prefix = 0,.dpo = (dpo_id_t)
+ {
+ .dpoi_type = hicn_face_udp_type,.dpoi_proto =
+ dpo_proto,.dpoi_next_node = 0,.dpoi_index = *pfaceid,}
+ };
+
+ return ret;
+}
+
+int
+hicn_face_udp_del (u32 faceid)
+{
+ return hicn_face_del (faceid);
+}
+
+u8 *
+format_hicn_face_udp (u8 * s, va_list * args)
+{
+ hicn_face_id_t face_id = va_arg (*args, index_t);
+ CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
+ hicn_face_t *face;
+ hicn_face_udp_t *udp_face;
+ ip_adjacency_t *adj;
+ u8 ipv = 0x40;
+ vnet_main_t *vnm = vnet_get_main ();
+
+
+ face = hicn_dpoi_get_from_idx (face_id);
+ udp_face = (hicn_face_udp_t *) (face->data);
+
+ if (face->shared.flags & HICN_FACE_FLAGS_FACE)
+ {
+ ASSERT (face->shared.adj != (adj_index_t) ~ 0);
+ adj = adj_get (face->shared.adj);
+
+ s = format (s, "%U Face %d: ", format_white_space, indent, face_id);
+ if (udp_face->hdrs.ip4.ip.ip_version_and_header_length == ipv)
+ {
+ s = format (s, "type UDP local %U|%u ",
+ format_ip4_address, &udp_face->hdrs.ip4.ip.src_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.src_port));
+ s =
+ format (s, "remote %U|%u ", format_ip4_address,
+ &udp_face->hdrs.ip4.ip.dst_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.dst_port));
+ s = format (s, "%U", format_vnet_link, adj->ia_link);
+ s = format (s, " dev %U", format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, face->shared.sw_if));
+ if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
+ s = format (s, " (deleted)");
+ }
+ else
+ {
+ s = format (s, "type UDP local %U|%u ",
+ format_ip6_address, &udp_face->hdrs.ip6.ip.src_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.src_port));
+ s =
+ format (s, "remote %U|%u", format_ip6_address,
+ &udp_face->hdrs.ip6.ip.dst_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.dst_port));
+ s = format (s, "%U", format_vnet_link, adj->ia_link);
+ s = format (s, " dev %U", format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, face->shared.sw_if));
+ if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
+ s = format (s, " (deleted)");
+ }
+ }
+ else
+ {
+ s = format (s, "IFace %d: ", format_white_space, indent, face_id);
+ if (udp_face->hdrs.ip4.ip.ip_version_and_header_length == ipv)
+ {
+ s = format (s, "type UDP local %U|%u",
+ format_ip4_address, &udp_face->hdrs.ip4.ip.src_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.src_port));
+ s =
+ format (s, " local %U|%u", format_ip4_address,
+ &udp_face->hdrs.ip4.ip.dst_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip4.udp.dst_port));
+ s =
+ format (s, " dev %U", format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, face->shared.sw_if));
+ if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
+ s = format (s, " (deleted)");
+ }
+ else
+ {
+ s = format (s, "type UDP local %U|%u",
+ format_ip6_address, &udp_face->hdrs.ip6.ip.src_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.src_port));
+ s =
+ format (s, " remote %U|%u", format_ip6_address,
+ &udp_face->hdrs.ip6.ip.dst_address,
+ clib_net_to_host_u16 (udp_face->hdrs.ip6.udp.dst_port));
+ s =
+ format (s, " dev %U", format_vnet_sw_interface_name, vnm,
+ vnet_get_sw_interface (vnm, face->shared.sw_if));
+ if ((face->shared.flags & HICN_FACE_FLAGS_DELETED))
+ s = format (s, " (deleted)");
+ }
+ }
+
+ return s;
+}
+
+void
+hicn_face_udp_get_dpo (hicn_face_t * face, dpo_id_t * dpo)
+{
+ hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
+ u8 version =
+ (face_udp->hdrs.ip4.ip.ip_version_and_header_length & 0xf0) >> 4;
+ return hicn_dpo_udp_create_from_face (face, dpo,
+ version ==
+ (u8) 4 ? strategy_face_udp4_vlib_edge
+ : strategy_face_udp6_vlib_edge);
+}
+
+hicn_face_vft_t udp_vft = {
+ .format_face = format_hicn_face_udp,
+ .hicn_face_del = hicn_face_udp_del,
+ .hicn_face_get_dpo = hicn_face_udp_get_dpo,
+};
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/face_udp.h b/hicn-plugin/src/faces/udp/face_udp.h
new file mode 100755
index 000000000..8694bad5c
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/face_udp.h
@@ -0,0 +1,248 @@
+/*
+ * Copyright (c) 2017-2019 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 __HICN_FACE_UDP_H__
+#define __HICN_FACE_UDP_H__
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vnet/udp/udp_packet.h>
+
+#include "../face.h"
+
+/**
+ * @file
+ * @brief UDP face
+ *
+ * This file containes the definition of UDP faces.
+ * UDP faces encap and decap an hicn packet into a UDP tunnel.
+ * Src and dst address in interest and data packets are not considered and
+ * should be set to 0 (not checked in the forwarder).
+ */
+
+/* Pre-instantiated ip header to fast fill an newly encapsulated packet */
+extern ip4_header_t ip4_header_skl;
+extern ip6_header_t ip6_header_skl;
+
+#define INVALID_UDP_DPO_INDEX ~0
+
+/**
+ * @brief UDP face representation. The following is stored in the data field of
+ * an hicn_face_t object (see hicn_face.h). A UDP face is identifies by the
+ * quadruplet (src addr, dst addr, src port, dst port).
+ */
+typedef struct hicn_face_udp_t_
+{
+ /**
+ * The headers to paint, in packet painting order
+ */
+ union
+ {
+ struct
+ {
+ ip4_header_t ip;
+ udp_header_t udp;
+ } __attribute__ ((packed)) ip4;
+ struct
+ {
+ ip6_header_t ip;
+ udp_header_t udp;
+ } __attribute__ ((packed)) ip6;
+ } __attribute__ ((packed)) hdrs;
+} hicn_face_udp_t;
+
+/* Hast table mapping the udp key with the face id (dpoi_index pointing to and
+ element in the face pool defined in hicn_face.h)*/
+extern mhash_t hicn_face_udp_hashtb;
+
+/**
+ * @brief Hash table key.
+ */
+typedef struct hicn_face_udp_key_s
+{
+ ip46_address_t local_addr;
+ ip46_address_t remote_addr;
+ u16 local_port;
+ u16 remote_port;
+} hicn_face_udp_key_t;
+
+/* DPO type for the udp face */
+extern dpo_type_t hicn_face_udp_type;
+
+/* VFT table for the udp face. Mainly used to format the face in the right way */
+extern hicn_face_vft_t udp_vft;
+
+/**
+ * @brief Create the key object for the mhash. Fill in the key object with the
+ * expected values.
+ *
+ * @param local_addr Local address of the UDP tunnel
+ * @param remote_addr Remote address of the UDP tunnel
+ * @param local_port Local port of the UDP tunnel
+ * @param remote_port Remote port of the UDP tunnel
+ * @param key Pointer to an allocated hicn_face_udp_key_t object
+ */
+always_inline void
+hicn_face_udp4_get_key (const ip4_address_t * local_addr,
+ const ip4_address_t * remote_addr,
+ u16 local_port, u16 remote_port,
+ hicn_face_udp_key_t * key)
+{
+
+ ip46_address_set_ip4 (&(key->local_addr), local_addr);
+ ip46_address_set_ip4 (&(key->remote_addr), remote_addr);
+ key->local_port = local_port;
+ key->remote_port = remote_port;
+}
+
+/**
+ * @brief Create the key object for the mhash. Fill in the key object with the
+ * expected values.
+ *
+ * @param local_addr Local address of the UDP tunnel
+ * @param remote_addr Remote address of the UDP tunnel
+ * @param local_port Local port of the UDP tunnel
+ * @param remote_port Remote port of the UDP tunnel
+ * @param key Pointer to an allocated hicn_face_udp_key_t object
+ */
+always_inline void
+hicn_face_udp6_get_key (const ip6_address_t * local_addr,
+ const ip6_address_t * remote_addr,
+ u16 local_port, u16 remote_port,
+ hicn_face_udp_key_t * key)
+{
+ key->local_addr.ip6 = *local_addr;
+ key->remote_addr.ip6 = *remote_addr;
+ key->local_port = local_port;
+ key->remote_port = remote_port;
+}
+
+/**
+ * @brief Get the dpoi from the quadruplet that identifies the face. Does not add any lock.
+ *
+ * @param local_addr Local address of the UDP tunnel
+ * @param remote_addr Remote address of the UDP tunnel
+ * @param local_port Local port of the UDP tunnel
+ * @param remote_port Remote port of the UDP tunnel
+ *
+ * @result Pointer to the face.
+ */
+always_inline hicn_face_t *
+hicn_face_udp4_get (const ip4_address_t * local_addr,
+ const ip4_address_t * remote_addr,
+ u16 local_port, u16 remote_port)
+{
+ hicn_face_udp_key_t key;
+
+ hicn_face_udp4_get_key (local_addr, remote_addr, local_port, remote_port,
+ &key);
+
+ hicn_face_id_t *dpoi_index =
+ (hicn_face_id_t *) mhash_get (&hicn_face_udp_hashtb,
+ &key);
+
+ return dpoi_index == NULL ? NULL : hicn_dpoi_get_from_idx (*dpoi_index);
+}
+
+/**
+ * @brief Get the dpoi from the quadruplet that identifies the face. Does not add any lock.
+ *
+ * @param local_addr Local address of the UDP tunnel (network order)
+ * @param remote_addr Remote address of the UDP tunnel (network order)
+ * @param local_port Local port of the UDP tunnel (network order)
+ * @param remote_port Remote port of the UDP tunnel (network order)
+ *
+ * @result Pointer to the face.
+ */
+always_inline hicn_face_t *
+hicn_face_udp6_get (const ip6_address_t * local_addr,
+ const ip6_address_t * remote_addr,
+ u16 local_port, u16 remote_port)
+{
+ hicn_face_udp_key_t key;
+
+ hicn_face_udp6_get_key (local_addr, remote_addr, local_port, remote_port,
+ &key);
+
+ hicn_face_id_t *dpoi_index =
+ (hicn_face_id_t *) mhash_get (&hicn_face_udp_hashtb,
+ &key);
+
+ return dpoi_index == NULL ? NULL : hicn_dpoi_get_from_idx (*dpoi_index);
+}
+
+
+/**
+ * @brief Initialize the udp face module
+ */
+void hicn_face_udp_init (vlib_main_t * vm);
+
+/**
+ * @brief Create a new face ip. API for other modules (e.g., routing)
+ *
+ * @param local_addr Local ip v4 or v6 address of the face (network order)
+ * @param remote_addr Remote ip v4 or v6 address of the face (network order)
+ * @param local_port Local udp port of the face (network order)
+ * @param remote_port Remote udp port of the face (network order)
+ * @param sw_if interface associated to the face
+ * @param pfaceid Pointer to return the face id
+ * @return HICN_ERROR_FACE_NO_GLOBAL_IP if the face does not have a globally
+ * reachable ip address, otherwise HICN_ERROR_NONE
+ */
+int hicn_face_udp_add (const ip46_address_t * local_addr,
+ const ip46_address_t * remote_addr, u16 local_port,
+ u16 remote_port, u32 swif, hicn_face_id_t * pfaceid);
+
+/**
+ * @brief Delete an ip face
+ *
+ * @param face_id Id of the face to delete
+ * @return HICN_ERROR_FACE_NOT_FOUND if the face does not exist, otherwise
+ * HICN_ERROR_NONE
+ */
+int hicn_face_udp_del (hicn_face_id_t faceid);
+
+/**
+ * @brief Format a UDP face
+ *
+ * @param s Pointer to a previous string. If null it will be initialize
+ * @param args Array storing input values. Expected u32 indent and u32 face_id
+ * @return String with the formatted face
+ */
+u8 *format_hicn_face_udp (u8 * s, va_list * args);
+
+/**
+ * @brief Create a dpo from a udp face
+ *
+ * @param face Face from which to create the dpo
+ * @return the dpo
+ */
+void hicn_face_udp_get_dpo (hicn_face_t * face, dpo_id_t * dpo);
+
+/**
+ * @brief Init some internal structures
+ */
+void hicn_face_udp_init_internal (void);
+
+#endif // __HICN_FACE_UDP_H__
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/face_udp_cli.c b/hicn-plugin/src/faces/udp/face_udp_cli.c
new file mode 100755
index 000000000..7bb172ce8
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/face_udp_cli.c
@@ -0,0 +1,164 @@
+/*
+ * Copyright (c) 2017-2019 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 "face_udp.h"
+#include "dpo_udp.h"
+
+#include <vnet/vnet.h>
+#include <vnet/dpo/dpo.h>
+#include <vlib/vlib.h>
+#include <vnet/ip/format.h>
+
+#define HICN_FACE_NONE 0
+#define HICN_FACE_DELETE 1
+#define HICN_FACE_ADD 2
+
+
+static clib_error_t *
+hicn_face_udp_cli_set_command_fn (vlib_main_t * vm,
+ unformat_input_t * main_input,
+ vlib_cli_command_t * cmd)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+ ip46_address_t src_addr;
+ u32 src_port = 0;
+ ip46_address_t dst_addr;
+ u32 dst_port = 0;
+ hicn_face_id_t face_id = HICN_FACE_NULL;
+ int ret = HICN_ERROR_NONE;
+ int sw_if;
+ int face_op = HICN_FACE_NONE;
+
+ ip46_address_reset (&src_addr);
+ ip46_address_reset (&dst_addr);
+ /* Get a line of input. */
+ unformat_input_t _line_input, *line_input = &_line_input;
+ if (!unformat_user (main_input, unformat_line_input, line_input))
+ {
+ return (0);
+ }
+
+ while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (line_input, "del"))
+ {
+ if (unformat (line_input, "id %d", &face_id))
+ face_op = HICN_FACE_DELETE;
+ else
+ {
+ return clib_error_return (0, "missing face id");
+ }
+ }
+ else if (unformat (line_input, "add"))
+ {
+ face_op = HICN_FACE_ADD;
+ if (unformat
+ (line_input, "src_addr %U port %u dst_addr %U port %u intfc %U",
+ unformat_ip46_address, &src_addr, IP46_TYPE_ANY, &src_port,
+ unformat_ip46_address, &dst_addr, IP46_TYPE_ANY, &dst_port,
+ unformat_vnet_sw_interface, vnm, &sw_if));
+ else
+ {
+ return clib_error_return (0, "%s '%U'",
+ get_error_string
+ (HICN_ERROR_CLI_INVAL),
+ format_unformat_error, line_input);
+ }
+ }
+ else
+ {
+ return clib_error_return (0, "%s '%U'",
+ get_error_string (HICN_ERROR_CLI_INVAL),
+ format_unformat_error, line_input);
+ }
+ }
+
+ if (face_id != HICN_FACE_NULL)
+ {
+ if (!hicn_dpoi_idx_is_valid (face_id))
+ {
+ return clib_error_return (0, "%s, face_id %d not valid",
+ get_error_string (ret), face_id);
+ }
+ }
+
+ int rv;
+ switch (face_op)
+ {
+ case HICN_FACE_ADD:
+
+ /* Check for presence of next hop address */
+ if (((dst_addr.as_u64[0] == (u64) 0) && (dst_addr.as_u64[1] == (u64) 0))
+ || dst_port == 0)
+ {
+ return clib_error_return (0, "dst address and port not specified");
+ }
+
+ if (((src_addr.as_u64[0] == (u64) 0) && (src_addr.as_u64[1] == (u64) 0))
+ || src_port == 0)
+ {
+ return clib_error_return (0, "src address not specified");
+ }
+
+ rv =
+ hicn_face_udp_add (&src_addr, &dst_addr,
+ clib_host_to_net_u16 (src_port),
+ clib_host_to_net_u16 (dst_port), sw_if, &face_id);
+ if (rv == HICN_ERROR_NONE)
+ {
+ vlib_cli_output (vm, "Face id: %d", face_id);
+ }
+ else
+ {
+ return clib_error_return (0, get_error_string (rv));
+ }
+ break;
+ case HICN_FACE_DELETE:
+ rv = hicn_face_udp_del (face_id);
+ if (rv == HICN_ERROR_NONE)
+ {
+ vlib_cli_output (vm, "Face %d deleted", face_id);
+ }
+ else
+ {
+ return clib_error_return (0, get_error_string (rv));
+ }
+ break;
+ default:
+ return clib_error_return (0, "Operation (%d) not implemented", face_op);
+ break;
+ }
+ return (rv == HICN_ERROR_NONE) ? 0 : clib_error_return (0, "%s\n",
+ get_error_string
+ (rv));
+}
+
+/* cli declaration for 'cfg face' */
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (hicn_face_udp_cli_set_command, static) =
+{
+ .path = "hicn face udp",
+ .short_help = "hicn face udp {add src_addr <src_address> port <src_port > dst_addr <dst_address> port <dst_port>} intfc <interface> | {del id <face_id>}",
+ .function = hicn_face_udp_cli_set_command_fn,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/face_udp_node.c b/hicn-plugin/src/faces/udp/face_udp_node.c
new file mode 100755
index 000000000..74d0b1864
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/face_udp_node.c
@@ -0,0 +1,864 @@
+/*
+ * Copyright (c) 2017-2019 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 <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/ip/ip_packet.h>
+
+#include "face_udp.h"
+#include "face_udp_node.h"
+#include "dpo_udp.h"
+#include "../face.h"
+#include "../../strategy.h"
+#include "../../strategy_dpo_manager.h"
+#include "../../hicn.h"
+
+/**
+ * @File
+ *
+ * Definition of the nodes for udp faces.
+ */
+
+vlib_node_registration_t hicn_face_udp4_input_node;
+vlib_node_registration_t hicn_face_udp6_input_node;
+vlib_node_registration_t hicn_face_udp4_output_node;
+vlib_node_registration_t hicn_face_udp6_output_node;
+
+static char *hicn_face_udp4_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn_face_udp6_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_udp4_input_trace_t;
+
+typedef enum
+{
+ HICN_FACE_UDP4_INPUT_NEXT_DATA,
+ HICN_FACE_UDP4_INPUT_NEXT_MAPME,
+ HICN_FACE_UDP4_INPUT_NEXT_ERROR_DROP,
+ HICN_FACE_UDP4_INPUT_N_NEXT,
+} hicn_face_udp4_input_next_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_udp6_input_trace_t;
+
+typedef enum
+{
+ HICN_FACE_UDP6_INPUT_NEXT_DATA,
+ HICN_FACE_UDP6_INPUT_NEXT_MAPME,
+ HICN_FACE_UDP6_INPUT_NEXT_ERROR_DROP,
+ HICN_FACE_UDP6_INPUT_N_NEXT,
+} hicn_face_udp6_input_next_t;
+
+#define ERROR_INPUT_UDP4 HICN_FACE_UDP4_INPUT_NEXT_ERROR_DROP
+#define ERROR_INPUT_UDP6 HICN_FACE_UDP6_INPUT_NEXT_ERROR_DROP
+
+#define NEXT_MAPME_UDP4 HICN_FACE_UDP4_INPUT_NEXT_MAPME
+#define NEXT_MAPME_UDP6 HICN_FACE_UDP6_INPUT_NEXT_MAPME
+#define NEXT_DATA_UDP4 HICN_FACE_UDP4_INPUT_NEXT_DATA
+#define NEXT_DATA_UDP6 HICN_FACE_UDP6_INPUT_NEXT_DATA
+
+#define IP_HEADER_4 ip4_header_t
+#define IP_HEADER_6 ip6_header_t
+
+#define HICN_DPO_UDP_LOCK_IP4 hicn_dpo_udp4_lock
+#define HICN_DPO_UDP_LOCK_IP6 hicn_dpo_udp6_lock
+
+#define TRACE_INPUT_PKT_UDP4 hicn_face_udp4_input_trace_t
+#define TRACE_INPUT_PKT_UDP6 hicn_face_udp6_input_trace_t
+
+#define face_input_x1(ipv) \
+ do { \
+ int ret; \
+ vlib_buffer_t *b0; \
+ u32 bi0; \
+ u32 next0 = ERROR_INPUT_UDP##ipv; \
+ IP_HEADER_##ipv * ip_hdr = NULL; \
+ u8 * inner_ip_hdr = NULL; \
+ udp_header_t * udp_hdr = NULL; \
+ hicn_buffer_t * hicnb0; \
+ /* Prefetch for next iteration. */ \
+ if (n_left_from > 1) \
+ { \
+ vlib_buffer_t *b1; \
+ b1 = vlib_get_buffer (vm, from[1]); \
+ CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ from += 1; \
+ n_left_from -= 1; \
+ to_next[0] = bi0; \
+ to_next += 1; \
+ n_left_to_next -= 1; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ ip_hdr = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
+ udp_hdr = (udp_header_t *) (ip_hdr + 1); \
+ hicnb0 = hicn_get_buffer(b0); \
+ \
+ inner_ip_hdr = (u8 *)(udp_hdr + 1); \
+ u8 is_v6 = ((inner_ip_hdr[0] & 2) >> 1); \
+ u8 is_icmp = is_v6*(inner_ip_hdr[7] == IPPROTO_ICMPV6) + \
+ (1 - is_v6)*(inner_ip_hdr[10] == IPPROTO_ICMPV4); \
+ \
+ ret = HICN_DPO_UDP_LOCK_IP##ipv \
+ (&(hicnb0->face_dpo_id), \
+ &(ip_hdr->dst_address), \
+ &(ip_hdr->src_address), \
+ (udp_hdr->dst_port), \
+ (udp_hdr->src_port), \
+ &hicnb0->is_appface); \
+ \
+ if ( PREDICT_FALSE(ret != HICN_ERROR_NONE) ) \
+ { \
+ next0 = ERROR_INPUT_UDP##ipv; \
+ } \
+ else \
+ { \
+ next0 = is_icmp*NEXT_MAPME_UDP##ipv + \
+ (1-is_icmp)*NEXT_DATA_UDP##ipv; \
+ stats.pkts_data_count += 1; \
+ \
+ vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
+ sizeof(udp_header_t)); \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_CONTENT; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, next0); \
+ }while(0) \
+
+#define face_input_x2(ipv) \
+ do { \
+ int ret0, ret1; \
+ vlib_buffer_t *b0, *b1; \
+ u32 bi0, bi1; \
+ u32 next0 = ERROR_INPUT_UDP##ipv; \
+ u32 next1 = ERROR_INPUT_UDP##ipv; \
+ IP_HEADER_##ipv * ip_hdr0 = NULL; \
+ IP_HEADER_##ipv * ip_hdr1 = NULL; \
+ u8 * inner_ip_hdr0 = NULL; \
+ u8 * inner_ip_hdr1 = NULL; \
+ udp_header_t * udp_hdr0 = NULL; \
+ udp_header_t * udp_hdr1 = NULL; \
+ hicn_buffer_t *hicnb0, *hicnb1; \
+ \
+ /* Prefetch for next iteration. */ \
+ { \
+ vlib_buffer_t *b2, *b3; \
+ b2 = vlib_get_buffer (vm, from[2]); \
+ b3 = vlib_get_buffer (vm, from[3]); \
+ CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ bi1 = from[1]; \
+ from += 2; \
+ n_left_from -= 2; \
+ to_next[0] = bi0; \
+ to_next[1] = bi1; \
+ to_next += 2; \
+ n_left_to_next -= 2; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ b1 = vlib_get_buffer (vm, bi1); \
+ ip_hdr0 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
+ ip_hdr1 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b1); \
+ udp_hdr0 = (udp_header_t *) (ip_hdr0 + 1); \
+ udp_hdr1 = (udp_header_t *) (ip_hdr1 + 1); \
+ hicnb0 = hicn_get_buffer(b0); \
+ hicnb1 = hicn_get_buffer(b1); \
+ \
+ inner_ip_hdr0 = (u8 *)(udp_hdr0 + 1); \
+ u8 is_v6_0 = ((inner_ip_hdr0[0] & 2) >> 1); \
+ u8 is_icmp0 = is_v6_0*(inner_ip_hdr0[7] == IPPROTO_ICMPV6) + \
+ (1 - is_v6_0)*(inner_ip_hdr0[10] == IPPROTO_ICMPV4); \
+ \
+ inner_ip_hdr1 = (u8 *)(udp_hdr1 + 1); \
+ u8 is_v6_1 = ((inner_ip_hdr1[0] & 2) >> 1); \
+ u8 is_icmp1 = is_v6_1*(inner_ip_hdr1[7] == IPPROTO_ICMPV6) + \
+ (1 - is_v6_1)*(inner_ip_hdr1[10] == IPPROTO_ICMPV4); \
+ \
+ ret0 = HICN_DPO_UDP_LOCK_IP##ipv \
+ (&(hicnb0->face_dpo_id), \
+ &(ip_hdr0->dst_address), \
+ &(ip_hdr0->src_address), \
+ (udp_hdr0->dst_port), \
+ (udp_hdr0->src_port), \
+ &hicnb0->is_appface); \
+ \
+ ret1 = HICN_DPO_UDP_LOCK_IP##ipv \
+ (&(hicnb1->face_dpo_id), \
+ &(ip_hdr1->dst_address), \
+ &(ip_hdr1->src_address), \
+ (udp_hdr1->dst_port), \
+ (udp_hdr1->src_port), \
+ &hicnb1->is_appface); \
+ \
+ if ( PREDICT_FALSE(ret0 != HICN_ERROR_NONE) ) \
+ { \
+ next0 = ERROR_INPUT_UDP##ipv; \
+ } \
+ else \
+ { \
+ stats.pkts_data_count += 1; \
+ next0 = is_icmp0*NEXT_MAPME_UDP##ipv + \
+ (1-is_icmp0)*NEXT_DATA_UDP##ipv; \
+ \
+ vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
+ sizeof(udp_header_t)); \
+ } \
+ \
+ if ( PREDICT_FALSE(ret1 != HICN_ERROR_NONE) ) \
+ { \
+ next1 = ERROR_INPUT_UDP##ipv; \
+ } \
+ else \
+ { \
+ stats.pkts_data_count += 1; \
+ next1 = is_icmp1*NEXT_MAPME_UDP##ipv + \
+ (1-is_icmp1)*NEXT_DATA_UDP##ipv; \
+ \
+ vlib_buffer_advance(b1, sizeof(IP_HEADER_##ipv) + \
+ sizeof(udp_header_t)); \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_CONTENT; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b1->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b1, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_CONTENT; \
+ t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; \
+ t->next_index = next1; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, bi1, next0, next1); \
+ }while(0) \
+
+static uword
+hicn_face_udp4_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_input_x2 (4);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_input_x1 (4);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_DATAS, stats.pkts_data_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_udp4_input_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_face_udp4_input_trace_t *t =
+ va_arg (*args, hicn_face_udp4_input_trace_t *);
+
+ s = format (s, "FACE_UDP4_INPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_face_udp4_input_node) =
+{
+ .function = hicn_face_udp4_input_node_fn,
+ .name = "hicn-face-udp4-input",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_face_udp4_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_face_udp4_input_error_strings),
+ .error_strings = hicn_face_udp4_input_error_strings,
+ .n_next_nodes = HICN_FACE_UDP4_INPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN_FACE_UDP4_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
+ [HICN_FACE_UDP4_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
+ [HICN_FACE_UDP4_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+
+static uword
+hicn_face_udp6_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_input_x2 (6);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_input_x1 (6);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_PROCESSED, stats.pkts_processed);
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_DATAS, stats.pkts_data_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_udp6_input_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_face_udp6_input_trace_t *t =
+ va_arg (*args, hicn_face_udp6_input_trace_t *);
+
+ s = format (s, "FACE_UDP6_INPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_face_udp6_input_node) =
+{
+ .function = hicn_face_udp6_input_node_fn,
+ .name = "hicn-face-udp6-input",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_face_udp6_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_face_udp6_input_error_strings),
+ .error_strings = hicn_face_udp6_input_error_strings,
+ .n_next_nodes = HICN_FACE_UDP6_INPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN_FACE_UDP6_INPUT_NEXT_DATA] = "hicn-data-pcslookup",
+ [HICN_FACE_UDP6_INPUT_NEXT_MAPME] = "hicn-mapme-ack",
+ [HICN_FACE_UDP6_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/******* Face Output *******/
+
+always_inline void
+hicn_face_udp4_encap (vlib_main_t * vm,
+ vlib_buffer_t * outer_b0,
+ hicn_face_t * face, u32 * next)
+{
+ u16 old_l0 = 0, new_l0;
+ ip_csum_t sum0;
+ ip4_header_t *ip0;
+ udp_header_t *udp0;
+ hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
+ ip_adjacency_t *adj = adj_get (face->shared.adj);
+
+ /* ip */
+ ip0 = vlib_buffer_get_current (outer_b0);
+ clib_memcpy (ip0, &(face_udp->hdrs.ip4.ip), sizeof (ip4_header_t) +
+ sizeof (udp_header_t));
+
+ /* Fix UDP length */
+ udp0 = (udp_header_t *) (ip0 + 1);
+
+ new_l0 =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, outer_b0) -
+ sizeof (*ip0));
+ udp0->length = new_l0;
+
+ old_l0 = ip0->length;
+ ip0->length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, outer_b0));
+
+ sum0 = ip0->checksum;
+
+ //old_l0 always 0, see the rewrite setup
+ new_l0 = ip0->length;
+
+ sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
+ length /* changed member */ );
+ ip0->checksum = sum0;
+
+ vnet_buffer (outer_b0)->ip.adj_index[VLIB_TX] = face->shared.adj;
+
+ *next = adj->lookup_next_index;
+}
+
+always_inline void
+hicn_face_udp6_encap (vlib_main_t * vm,
+ vlib_buffer_t * outer_b0,
+ hicn_face_t * face, u32 * next)
+{
+ int bogus0;
+ u16 new_l0;
+ ip6_header_t *ip0;
+ udp_header_t *udp0;
+ hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
+ ip_adjacency_t *adj = adj_get (face->shared.adj);
+
+ /* ip */
+ ip0 = vlib_buffer_get_current (outer_b0);
+ clib_memcpy (ip0, &(face_udp->hdrs.ip6.ip), sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
+ new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, outer_b0)
+ - sizeof (*ip0));
+ ip0->payload_length = new_l0;
+
+ /* Fix UDP length */
+ udp0 = (udp_header_t *) (ip0 + 1);
+ udp0->length = new_l0;
+
+ udp0->checksum =
+ ip6_tcp_udp_icmp_compute_checksum (vm, outer_b0, ip0, &bogus0);
+
+ ASSERT (bogus0 == 0);
+
+ if (udp0->checksum == 0)
+ udp0->checksum = 0xffff;
+
+ vnet_buffer (outer_b0)->ip.adj_index[VLIB_TX] = face->shared.adj;
+
+ *next = adj->lookup_next_index;
+}
+
+static char *hicn_face_udp4_output_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn_face_udp6_output_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_udp4_output_trace_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_face_udp6_output_trace_t;
+
+#define HICN_FACE_UDP_ENCAP_IP4 hicn_face_udp4_encap
+#define HICN_FACE_UDP_ENCAP_IP6 hicn_face_udp6_encap
+
+#define TRACE_OUTPUT_PKT_UDP4 hicn_face_udp4_output_trace_t
+#define TRACE_OUTPUT_PKT_UDP6 hicn_face_udp6_output_trace_t
+
+#define IP_HEADER_4 ip4_header_t
+#define IP_HEADER_6 ip6_header_t
+
+#define face_output_x1(ipv) \
+ do { \
+ vlib_buffer_t *b0; \
+ u32 bi0; \
+ u32 next0 = IP_LOOKUP_NEXT_DROP; \
+ hicn_face_t * face; \
+ \
+ /* Prefetch for next iteration. */ \
+ if (n_left_from > 1) \
+ { \
+ vlib_buffer_t *b1; \
+ b1 = vlib_get_buffer (vm, from[1]); \
+ CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ from += 1; \
+ n_left_from -= 1; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ face = \
+ hicn_dpoi_get_from_idx(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
+ \
+ if (PREDICT_TRUE(face != NULL)) \
+ { \
+ /* Adjust vlib buffer. Create space for the udp tunnel. */ \
+ vlib_buffer_advance(b0, -(sizeof (IP_HEADER_##ipv) + \
+ sizeof (udp_header_t))); \
+ \
+ \
+ HICN_FACE_UDP_ENCAP_IP##ipv \
+ (vm, b0, face, &next0); \
+ stats.pkts_interest_count += 1; \
+ } \
+ \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ to_next[0] = bi0; \
+ to_next += 1; \
+ n_left_to_next -= 1; \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, next0); \
+ } while(0) \
+
+
+#define face_output_x2(ipv) \
+ do { \
+ vlib_buffer_t *b0, *b1; \
+ u32 bi0, bi1; \
+ u32 next0 = IP_LOOKUP_NEXT_DROP; \
+ u32 next1 = IP_LOOKUP_NEXT_DROP; \
+ hicn_face_t *face0, *face1; \
+ \
+ /* Prefetch for next iteration. */ \
+ { \
+ vlib_buffer_t *b2, *b3; \
+ b2 = vlib_get_buffer (vm, from[2]); \
+ b3 = vlib_get_buffer (vm, from[3]); \
+ CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ bi1 = from[1]; \
+ from += 2; \
+ n_left_from -= 2; \
+ to_next[0] = bi0; \
+ to_next[1] = bi1; \
+ to_next += 2; \
+ n_left_to_next -= 2; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ b1 = vlib_get_buffer (vm, bi1); \
+ \
+ face0 = \
+ hicn_dpoi_get_from_idx(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
+ face1 = \
+ hicn_dpoi_get_from_idx(vnet_buffer (b1)->ip.adj_index[VLIB_TX]); \
+ \
+ if (PREDICT_TRUE(face0 != NULL)) \
+ { \
+ /* Adjust vlib buffer. Create space for the udp tunnel. */ \
+ vlib_buffer_advance(b0, -(sizeof (IP_HEADER_##ipv) + \
+ sizeof (udp_header_t))); \
+ \
+ \
+ HICN_FACE_UDP_ENCAP_IP##ipv \
+ (vm, b0, face0, &next0); \
+ stats.pkts_interest_count += 1; \
+ } \
+ \
+ if (PREDICT_TRUE(face1 != NULL)) \
+ { \
+ /* Adjust vlib buffer. Create space for the udp tunnel. */ \
+ vlib_buffer_advance(b1, -(sizeof (IP_HEADER_##ipv) + \
+ sizeof (udp_header_t))); \
+ \
+ \
+ HICN_FACE_UDP_ENCAP_IP##ipv \
+ (vm, b1, face1, &next1); \
+ stats.pkts_interest_count += 1; \
+ } \
+ \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, bi1, next0, next1); \
+ } while(0) \
+
+
+static uword
+hicn_face_udp4_output_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_output_x2 (4);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_output_x1 (4);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_INTERESTS,
+ stats.pkts_interest_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_udp4_output_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_face_udp4_output_trace_t *t =
+ va_arg (*args, hicn_face_udp4_output_trace_t *);
+
+ s = format (s, "FACE_UDP4_OUTPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/* *INDENT-OFF* */
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_face_udp4_output_node) =
+{
+ .function = hicn_face_udp4_output_node_fn,
+ .name = "hicn-face-udp4-output",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_face_udp4_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_face_udp4_output_error_strings),
+ .error_strings = hicn_face_udp4_output_error_strings,
+ .n_next_nodes = IP4_LOOKUP_N_NEXT,
+ /* Reusing the list of nodes from lookup to be compatible with arp */
+ .next_nodes = IP4_LOOKUP_NEXT_NODES,
+};
+/* *INDENT-ON* */
+
+/* *INDENT-ON* */
+
+static uword
+hicn_face_udp6_output_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ face_output_x2 (6);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ face_output_x1 (6);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_INTERESTS,
+ stats.pkts_interest_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_face_udp6_output_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_face_udp6_output_trace_t *t =
+ va_arg (*args, hicn_face_udp6_output_trace_t *);
+
+ s = format (s, "FACE_UDP6_OUTPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/* *INDENT-OFF* */
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_face_udp6_output_node) =
+{
+ .function = hicn_face_udp6_output_node_fn,
+ .name = "hicn-face-udp6-output",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_face_udp6_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_face_udp6_output_error_strings),
+ .error_strings = hicn_face_udp6_output_error_strings,
+ .n_next_nodes = IP6_LOOKUP_N_NEXT,
+ /* Reusing the list of nodes from lookup to be compatible with neighbour discovery */
+ .next_nodes = IP6_LOOKUP_NEXT_NODES,
+};
+/* *INDENT-ON* */
+
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/face_udp_node.h b/hicn-plugin/src/faces/udp/face_udp_node.h
new file mode 100755
index 000000000..c759312c8
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/face_udp_node.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2017-2019 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 __HICN_FACE_UDP_NODE_H__
+#define __HICN_FACE_UDP_NODE_H__
+
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+
+extern vlib_node_registration_t hicn_face_udp4_input_node;
+extern vlib_node_registration_t hicn_face_udp6_input_node;
+extern vlib_node_registration_t hicn_face_udp4_output_node;
+extern vlib_node_registration_t hicn_face_udp6_output_node;
+
+#endif // __HICN_FACE_UDP_NODE_H__
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/iface_udp_node.c b/hicn-plugin/src/faces/udp/iface_udp_node.c
new file mode 100755
index 000000000..ddea31b4c
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/iface_udp_node.c
@@ -0,0 +1,894 @@
+/*
+ * Copyright (c) 2017-2019 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 "iface_udp_node.h"
+#include "dpo_udp.h"
+#include "../face.h"
+
+#include "../../infra.h"
+#include "../../hicn.h"
+
+/**
+ * @File
+ *
+ * Definition of the nodes for udp incomplete faces.
+ */
+
+vlib_node_registration_t hicn_iface_udp4_input_node;
+vlib_node_registration_t hicn_iface_udp6_input_node;
+vlib_node_registration_t hicn_iface_udp4_output_node;
+vlib_node_registration_t hicn_iface_udp6_output_node;
+
+u32 data_fwd_face_udp4_vlib_edge;
+u32 data_fwd_face_udp6_vlib_edge;
+
+void
+hicn_iface_udp_init (vlib_main_t * vm)
+{
+ data_fwd_face_udp4_vlib_edge = vlib_node_add_next (vm,
+ hicn_data_fwd_node.index,
+ hicn_iface_udp4_output_node.
+ index);
+
+ data_fwd_face_udp6_vlib_edge = vlib_node_add_next (vm,
+ hicn_data_fwd_node.index,
+ hicn_iface_udp6_output_node.
+ index);
+
+ u32 temp_index4 = vlib_node_add_next (vm,
+ hicn_interest_hitcs_node.index,
+ hicn_iface_udp4_output_node.index);
+ u32 temp_index6 = vlib_node_add_next (vm,
+ hicn_interest_hitcs_node.index,
+ hicn_iface_udp6_output_node.index);
+
+ ASSERT (temp_index4 == data_fwd_face_udp4_vlib_edge);
+ ASSERT (temp_index6 == data_fwd_face_udp6_vlib_edge);
+}
+
+static char *hicn_iface_udp4_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn_iface_udp6_input_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+u32
+get_face_udp4_output_node (void)
+{
+ return data_fwd_face_udp4_vlib_edge;
+}
+
+u32
+get_face_udp6_output_node (void)
+{
+ return data_fwd_face_udp6_vlib_edge;
+}
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_iface_udp4_input_trace_t;
+
+typedef enum
+{
+ HICN_IFACE_UDP4_INPUT_NEXT_INTEREST,
+ HICN_IFACE_UDP4_INPUT_NEXT_MAPME,
+ HICN_IFACE_UDP4_INPUT_NEXT_ERROR_DROP,
+ HICN_IFACE_UDP4_INPUT_N_NEXT,
+} hicn_iface_udp4_input_next_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_iface_udp6_input_trace_t;
+
+typedef enum
+{
+ HICN_IFACE_UDP6_INPUT_NEXT_INTEREST,
+ HICN_IFACE_UDP6_INPUT_NEXT_MAPME,
+ HICN_IFACE_UDP6_INPUT_NEXT_ERROR_DROP,
+ HICN_IFACE_UDP6_INPUT_N_NEXT,
+} hicn_iface_udp6_input_next_t;
+
+#define ERROR_INPUT_UDP4 HICN_IFACE_UDP4_INPUT_NEXT_ERROR_DROP
+#define ERROR_INPUT_UDP6 HICN_IFACE_UDP6_INPUT_NEXT_ERROR_DROP
+
+#define IP_HEADER_4 ip4_header_t
+#define IP_HEADER_6 ip6_header_t
+
+#define NEXT_MAPME_UDP4 HICN_IFACE_UDP4_INPUT_NEXT_MAPME
+#define NEXT_MAPME_UDP6 HICN_IFACE_UDP6_INPUT_NEXT_MAPME
+
+#define NEXT_INTEREST_UDP4 HICN_IFACE_UDP4_INPUT_NEXT_INTEREST
+#define NEXT_INTEREST_UDP6 HICN_IFACE_UDP6_INPUT_NEXT_INTEREST
+
+#define HICN_IFACE_UDP_ADD_LOCK_IP4 hicn_dpo_udp4_add_and_lock
+#define HICN_IFACE_UDP_ADD_LOCK_IP6 hicn_dpo_udp6_add_and_lock
+
+#define GET_FACE_UDP4 get_face_udp4_output_node
+#define GET_FACE_UDP6 get_face_udp6_output_node
+
+#define TRACE_INPUT_PKT_UDP4 hicn_iface_udp4_input_trace_t
+#define TRACE_INPUT_PKT_UDP6 hicn_iface_udp6_input_trace_t
+
+#define iface_input_x1(ipv) \
+ do { \
+ vlib_buffer_t *b0; \
+ u32 bi0; \
+ u32 next0 = ERROR_INPUT_UDP##ipv; \
+ IP_HEADER_##ipv * ip_hdr = NULL; \
+ u8 * inner_ip_hdr = NULL; \
+ udp_header_t * udp_hdr = NULL; \
+ hicn_buffer_t * hicnb0; \
+ /* Prefetch for next iteration. */ \
+ if (n_left_from > 1) \
+ { \
+ vlib_buffer_t *b1; \
+ b1 = vlib_get_buffer (vm, from[1]); \
+ CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ from += 1; \
+ n_left_from -= 1; \
+ to_next[0] = bi0; \
+ to_next += 1; \
+ n_left_to_next -= 1; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ ip_hdr = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
+ udp_hdr = (udp_header_t *) (ip_hdr + 1); \
+ hicnb0 = hicn_get_buffer(b0); \
+ \
+ stats.pkts_interest_count += 1; \
+ \
+ inner_ip_hdr = (u8 *)(udp_hdr + 1); \
+ u8 is_v6 = ((inner_ip_hdr[0] & 2) >> 1); \
+ u8 is_icmp = is_v6*(inner_ip_hdr[7] == IPPROTO_ICMPV6) + \
+ (1 - is_v6)*(inner_ip_hdr[10] == IPPROTO_ICMPV4); \
+ \
+ next0 = is_icmp*NEXT_MAPME_UDP##ipv + \
+ (1-is_icmp)*NEXT_INTEREST_UDP##ipv; \
+ \
+ HICN_IFACE_UDP_ADD_LOCK_IP##ipv \
+ (&(hicnb0->face_dpo_id), \
+ &(ip_hdr->dst_address), \
+ &(ip_hdr->src_address), \
+ udp_hdr->dst_port, \
+ udp_hdr->src_port, \
+ GET_FACE_UDP##ipv \
+ (), \
+ &hicnb0->is_appface); \
+ \
+ vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
+ sizeof(udp_header_t)); \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, next0); \
+ }while(0)
+
+
+#define iface_input_x2(ipv) \
+ do { \
+ vlib_buffer_t *b0, *b1; \
+ u32 bi0, bi1; \
+ u32 next0, next1 = ERROR_INPUT_UDP##ipv; \
+ IP_HEADER_##ipv * ip_hdr0 = NULL, *ip_hdr1 = NULL; \
+ u8 * inner_ip_hdr0 = NULL, *inner_ip_hdr1 = NULL; \
+ udp_header_t * udp_hdr0 = NULL, *udp_hdr1 = NULL; \
+ hicn_buffer_t * hicnb0, *hicnb1; \
+ \
+ /* Prefetch for next iteration. */ \
+ { \
+ vlib_buffer_t *b2, *b3; \
+ b2 = vlib_get_buffer (vm, from[2]); \
+ b3 = vlib_get_buffer (vm, from[3]); \
+ CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ bi1 = from[1]; \
+ from += 2; \
+ n_left_from -= 2; \
+ to_next[0] = bi0; \
+ to_next[1] = bi1; \
+ to_next += 2; \
+ n_left_to_next -= 2; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ b1 = vlib_get_buffer (vm, bi1); \
+ ip_hdr0 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b0); \
+ ip_hdr1 = (IP_HEADER_##ipv *) vlib_buffer_get_current(b1); \
+ udp_hdr0 = (udp_header_t *) (ip_hdr0 + 1); \
+ udp_hdr1 = (udp_header_t *) (ip_hdr1 + 1); \
+ hicnb0 = hicn_get_buffer(b0); \
+ hicnb1 = hicn_get_buffer(b1); \
+ \
+ stats.pkts_interest_count += 2; \
+ \
+ inner_ip_hdr0 = (u8 *)(udp_hdr0 + 1); \
+ inner_ip_hdr1 = (u8 *)(udp_hdr1 + 1); \
+ u8 is_v6_0 = ((inner_ip_hdr0[0] & 2) >> 1); \
+ u8 is_v6_1 = ((inner_ip_hdr1[0] & 2) >> 1); \
+ u8 is_icmp0 = is_v6_0*(inner_ip_hdr0[7] == IPPROTO_ICMPV6) + \
+ (1 - is_v6_0)*(inner_ip_hdr0[10] == IPPROTO_ICMPV4); \
+ u8 is_icmp1 = is_v6_1*(inner_ip_hdr1[7] == IPPROTO_ICMPV6) + \
+ (1 - is_v6_1)*(inner_ip_hdr1[10] == IPPROTO_ICMPV4); \
+ \
+ next0 = is_icmp0*NEXT_MAPME_UDP##ipv + \
+ (1-is_icmp0)*NEXT_INTEREST_UDP##ipv; \
+ next1 = is_icmp1*NEXT_MAPME_UDP##ipv + \
+ (1-is_icmp1)*NEXT_INTEREST_UDP##ipv; \
+ \
+ HICN_IFACE_UDP_ADD_LOCK_IP##ipv \
+ (&(hicnb0->face_dpo_id), \
+ &(ip_hdr0->dst_address), \
+ &(ip_hdr0->src_address), \
+ udp_hdr0->dst_port, \
+ udp_hdr0->src_port, \
+ GET_FACE_UDP##ipv \
+ (), \
+ &hicnb0->is_appface); \
+ \
+ \
+ HICN_IFACE_UDP_ADD_LOCK_IP##ipv \
+ (&(hicnb1->face_dpo_id), \
+ &(ip_hdr1->dst_address), \
+ &(ip_hdr1->src_address), \
+ udp_hdr1->dst_port, \
+ udp_hdr1->src_port, \
+ GET_FACE_UDP##ipv \
+ (), \
+ &hicnb1->is_appface); \
+ \
+ vlib_buffer_advance(b0, sizeof(IP_HEADER_##ipv) + \
+ sizeof(udp_header_t)); \
+ \
+ vlib_buffer_advance(b1, sizeof(IP_HEADER_##ipv) + \
+ sizeof(udp_header_t)); \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b1->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_INPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b1, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; \
+ t->next_index = next1; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, bi1, next0, next1); \
+ }while(0)
+
+
+static uword
+hicn_iface_udp4_input_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ iface_input_x2 (4);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ iface_input_x1 (4);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_INTERESTS,
+ stats.pkts_interest_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_iface_udp4_input_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_iface_udp4_input_trace_t *t =
+ va_arg (*args, hicn_iface_udp4_input_trace_t *);
+
+ s = format (s, "IFACE_UDP4_INPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_iface_udp4_input_node) =
+
+{
+ .function = hicn_iface_udp4_input_node_fn,
+ .name = "hicn-iface-udp4-input",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_iface_udp4_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_iface_udp4_input_error_strings),
+ .error_strings = hicn_iface_udp4_input_error_strings,
+ .n_next_nodes = HICN_IFACE_UDP4_INPUT_N_NEXT,
+ .next_nodes =
+ {
+ [HICN_IFACE_UDP4_INPUT_NEXT_INTEREST] = "hicn-interest-pcslookup",
+ [HICN_IFACE_UDP4_INPUT_NEXT_MAPME] = "hicn-mapme-ctrl",
+ [HICN_IFACE_UDP4_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+
+static uword
+hicn_iface_udp6_input_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ /* Dual loop, X2 */
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ iface_input_x2 (6);
+ }
+
+ /* Dual loop, X1 */
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ iface_input_x1 (6);
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_INTERESTS,
+ stats.pkts_interest_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_iface_udp6_input_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_iface_udp6_input_trace_t *t =
+ va_arg (*args, hicn_iface_udp6_input_trace_t *);
+
+ s = format (s, "IFACE_UDP6_INPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_iface_udp6_input_node) =
+{
+ .function = hicn_iface_udp6_input_node_fn,
+ .name = "hicn-iface-udp6-input",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_iface_udp6_input_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_iface_udp6_input_error_strings),
+ .error_strings = hicn_iface_udp6_input_error_strings,
+ .n_next_nodes = HICN_IFACE_UDP6_INPUT_N_NEXT,
+ .next_nodes =
+ {
+ [HICN_IFACE_UDP6_INPUT_NEXT_INTEREST] = "hicn-interest-pcslookup",
+ [HICN_IFACE_UDP6_INPUT_NEXT_MAPME] = "hicn-mapme-ctrl",
+ [HICN_IFACE_UDP6_INPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/******* Iface Output *******/
+
+always_inline void
+hicn_iface_udp4_encap (vlib_main_t * vm,
+ vlib_buffer_t * b0, hicn_face_t * face)
+{
+ u16 new_l0 = 0;
+ ip4_header_t *ip0;
+ udp_header_t *udp0;
+ hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
+
+ /* Adjust vlib buffers */
+ /* Set the right length on the header buffer */
+ /* Move the next buffer current data pointer back to the ip+tcp header (hicn header) */
+ int offset = sizeof (ip4_header_t) + sizeof (udp_header_t);
+ b0->current_data -= offset;
+ b0->current_length += offset;
+
+ /* ip */
+ ip0 = vlib_buffer_get_current (b0);
+ clib_memcpy (ip0, &(face_udp->hdrs.ip4.ip), sizeof (ip4_header_t) +
+ sizeof (udp_header_t));
+
+ /* Fix UDP length */
+ udp0 = (udp_header_t *) (ip0 + 1);
+
+ new_l0 =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) -
+ sizeof (*ip0));
+ udp0->length = new_l0;
+
+ ip0->length = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0));
+ ip0->checksum = ip4_header_checksum (ip0);
+}
+
+always_inline void
+hicn_iface_udp6_encap (vlib_main_t * vm,
+ vlib_buffer_t * b0, hicn_face_t * face)
+{
+ int bogus0;
+ u16 new_l0;
+ ip6_header_t *ip0;
+ udp_header_t *udp0;
+ hicn_face_udp_t *face_udp = (hicn_face_udp_t *) face->data;
+
+ /* Adjust vlib buffer */
+ int offset = sizeof (ip6_header_t) + sizeof (udp_header_t);
+ b0->current_data -= offset;
+ b0->current_length += offset;
+
+ /* ip */
+ ip0 = vlib_buffer_get_current (b0);
+ clib_memcpy (ip0, &(face_udp->hdrs.ip6.ip), sizeof (ip6_header_t) +
+ sizeof (udp_header_t));
+
+ new_l0 = clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)
+ - sizeof (*ip0));
+
+ ip0->payload_length = new_l0;
+
+ /* Fix UDP length */
+ udp0 = (udp_header_t *) (ip0 + 1);
+ udp0->length = new_l0;
+
+ udp0->checksum = ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0, &bogus0);
+
+ ASSERT (bogus0 == 0);
+
+ if (udp0->checksum == 0)
+ udp0->checksum = 0xffff;
+}
+
+static char *hicn_iface_udp4_output_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+static char *hicn_iface_udp6_output_error_strings[] = {
+#define _(sym, string) string,
+ foreach_hicnfwd_error
+#undef _
+};
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_iface_udp4_output_trace_t;
+
+typedef enum
+{
+ HICN_IFACE_UDP4_OUTPUT_NEXT_LOOKUP,
+ HICN_IFACE_UDP4_OUTPUT_NEXT_ERROR_DROP,
+ HICN_IFACE_UDP4_OUTPUT_N_NEXT,
+} hicn_iface_udp4_output_next_t;
+
+/* Trace context struct */
+typedef struct
+{
+ u32 next_index;
+ u32 sw_if_index;
+ u8 pkt_type;
+} hicn_iface_udp6_output_trace_t;
+
+typedef enum
+{
+ HICN_IFACE_UDP6_OUTPUT_NEXT_LOOKUP,
+ HICN_IFACE_UDP6_OUTPUT_NEXT_ERROR_DROP,
+ HICN_IFACE_UDP6_OUTPUT_N_NEXT,
+} hicn_iface_udp6_output_next_t;
+
+#define ERROR_OUTPUT_UDP4 HICN_IFACE_UDP4_OUTPUT_NEXT_ERROR_DROP
+#define ERROR_OUTPUT_UDP6 HICN_IFACE_UDP6_OUTPUT_NEXT_ERROR_DROP
+
+#define IP_HEADER_4 ip4_header_t
+#define IP_HEADER_6 ip6_header_t
+
+#define NEXT_LOOKUP_UDP4 HICN_IFACE_UDP4_OUTPUT_NEXT_LOOKUP
+#define NEXT_LOOKUP_UDP6 HICN_IFACE_UDP6_OUTPUT_NEXT_LOOKUP
+
+#define HICN_IFACE_UDP_ADD_LOCK_IP4 hicn_dpo_udp4_add_and_lock
+#define HICN_IFACE_UDP_ADD_LOCK_IP6 hicn_dpo_udp6_add_and_lock
+
+#define HICN_FACE_UDP_ENCAP_IP4 hicn_iface_udp4_encap
+#define HICN_FACE_UDP_ENCAP_IP6 hicn_iface_udp6_encap
+
+#define TRACE_OUTPUT_PKT_UDP4 hicn_iface_udp4_output_trace_t
+#define TRACE_OUTPUT_PKT_UDP6 hicn_iface_udp6_output_trace_t
+
+#define iface_output_x1(ipv) \
+ do { \
+ vlib_buffer_t *b0; \
+ u32 bi0; \
+ u32 next0 = ERROR_OUTPUT_UDP##ipv; \
+ hicn_face_t * face; \
+ \
+ /* Prefetch for next iteration. */ \
+ if (n_left_from > 1) \
+ { \
+ vlib_buffer_t *b1; \
+ b1 = vlib_get_buffer (vm, from[1]); \
+ CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b1->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ /* Dequeue a packet buffer */ \
+ bi0 = from[0]; \
+ from += 1; \
+ n_left_from -= 1; \
+ to_next[0] = bi0; \
+ to_next += 1; \
+ n_left_to_next -= 1; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ \
+ face = \
+ hicn_dpoi_get_from_idx(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
+ \
+ if (PREDICT_TRUE(face != NULL)) \
+ { \
+ HICN_FACE_UDP_ENCAP_IP##ipv \
+ (vm, b0, face); \
+ next0 = NEXT_LOOKUP_UDP##ipv; \
+ stats.pkts_data_count += 1; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, next0); \
+ } while(0)
+
+#define iface_output_x2(ipv) \
+ do { \
+ vlib_buffer_t *b0, *b1; \
+ u32 bi0, bi1; \
+ u32 next0 = ERROR_OUTPUT_UDP##ipv, next1 = ERROR_OUTPUT_UDP##ipv; \
+ hicn_face_t *face0, *face1; \
+ \
+ /* Prefetch for next iteration. */ \
+ { \
+ vlib_buffer_t *b2, *b3; \
+ b2 = vlib_get_buffer (vm, from[2]); \
+ b3 = vlib_get_buffer (vm, from[3]); \
+ CLIB_PREFETCH (b2, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b3, CLIB_CACHE_LINE_BYTES, STORE); \
+ CLIB_PREFETCH (b2->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ CLIB_PREFETCH (b3->data, CLIB_CACHE_LINE_BYTES , LOAD); \
+ } \
+ \
+ /* Dequeue packets buffers */ \
+ bi0 = from[0]; \
+ bi1 = from[1]; \
+ from += 2; \
+ n_left_from -= 2; \
+ to_next[0] = bi0; \
+ to_next[1] = bi1; \
+ to_next += 2; \
+ n_left_to_next -= 2; \
+ \
+ b0 = vlib_get_buffer (vm, bi0); \
+ b1 = vlib_get_buffer (vm, bi1); \
+ \
+ face0 = \
+ hicn_dpoi_get_from_idx(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
+ face1 = \
+ hicn_dpoi_get_from_idx(vnet_buffer (b0)->ip.adj_index[VLIB_TX]); \
+ \
+ if (PREDICT_TRUE(face0 != NULL)) \
+ { \
+ HICN_FACE_UDP_ENCAP_IP##ipv \
+ (vm, b0, face0); \
+ next0 = NEXT_LOOKUP_UDP##ipv; \
+ stats.pkts_data_count += 1; \
+ } \
+ \
+ if (PREDICT_TRUE(face1 != NULL)) \
+ { \
+ HICN_FACE_UDP_ENCAP_IP##ipv \
+ (vm, b1, face1); \
+ next0 = NEXT_LOOKUP_UDP##ipv; \
+ stats.pkts_data_count += 1; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b0->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b0, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_RX]; \
+ t->next_index = next0; \
+ } \
+ \
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) && \
+ (b1->flags & VLIB_BUFFER_IS_TRACED))) \
+ { \
+ TRACE_OUTPUT_PKT_UDP##ipv *t = \
+ vlib_add_trace (vm, node, b1, sizeof (*t)); \
+ t->pkt_type = HICN_PKT_TYPE_INTEREST; \
+ t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_RX]; \
+ t->next_index = next1; \
+ } \
+ \
+ \
+ /* Verify speculative enqueue, maybe switch current next frame */ \
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, \
+ to_next, n_left_to_next, \
+ bi0, bi1, next0, next1); \
+ } while(0)
+
+
+static uword
+hicn_iface_udp4_output_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ 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)
+ {
+ iface_output_x2 (4);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ iface_output_x1 (4);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_DATAS, stats.pkts_data_count);
+
+ return (frame->n_vectors);
+}
+
+/* packet trace format function */
+static u8 *
+hicn_iface_udp4_output_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_iface_udp4_output_trace_t *t =
+ va_arg (*args, hicn_iface_udp4_output_trace_t *);
+
+ s = format (s, "IFACE_UDP4_OUTPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_iface_udp4_output_node) =
+{
+ .function = hicn_iface_udp4_output_node_fn,
+ .name = "hicn-iface-udp4-output",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_iface_udp4_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_iface_udp4_output_error_strings),
+ .error_strings = hicn_iface_udp4_output_error_strings,
+ .n_next_nodes = HICN_IFACE_UDP4_OUTPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN_IFACE_UDP4_OUTPUT_NEXT_LOOKUP] = "ip4-lookup",
+ [HICN_IFACE_UDP4_OUTPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+
+static uword
+hicn_iface_udp6_output_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next, next_index;
+ vl_api_hicn_api_node_stats_get_reply_t stats = { 0 };
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ 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)
+ {
+ iface_output_x2 (6);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ iface_output_x1 (6);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ vlib_node_increment_counter (vm, node->node_index,
+ HICNFWD_ERROR_DATAS, stats.pkts_data_count);
+
+ return (frame->n_vectors);
+
+}
+
+/* packet trace format function */
+static u8 *
+hicn_iface_udp6_output_format_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ hicn_iface_udp6_output_trace_t *t =
+ va_arg (*args, hicn_iface_udp6_output_trace_t *);
+
+ s = format (s, "IFACE_UDP6_OUTPUT: pkt: %d, sw_if_index %d, next index %d",
+ (int) t->pkt_type, t->sw_if_index, t->next_index);
+ return (s);
+}
+
+/*
+ * Node registration for the interest forwarder node
+ */
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (hicn_iface_udp6_output_node) =
+{
+ .function = hicn_iface_udp6_output_node_fn,
+ .name = "hicn-iface-udp6-output",
+ .vector_size = sizeof (u32),
+ .format_trace = hicn_iface_udp6_output_format_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN (hicn_iface_udp6_output_error_strings),
+ .error_strings = hicn_iface_udp6_output_error_strings,
+ .n_next_nodes = HICN_IFACE_UDP6_OUTPUT_N_NEXT,
+ /* edit / add dispositions here */
+ .next_nodes =
+ {
+ [HICN_IFACE_UDP6_OUTPUT_NEXT_LOOKUP] = "ip6-lookup",
+ [HICN_IFACE_UDP6_OUTPUT_NEXT_ERROR_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/hicn-plugin/src/faces/udp/iface_udp_node.h b/hicn-plugin/src/faces/udp/iface_udp_node.h
new file mode 100755
index 000000000..957d19217
--- /dev/null
+++ b/hicn-plugin/src/faces/udp/iface_udp_node.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2017-2019 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 __HICN_IFACE_UDP_H__
+#define __HICN_IFACE_UDP_H__
+
+#include <vlib/vlib.h>
+
+extern vlib_node_registration_t hicn_iface_udp4_input_node;
+extern vlib_node_registration_t hicn_iface_udp6_input_node;
+extern vlib_node_registration_t hicn_iface_udp4_output_node;
+extern vlib_node_registration_t hicn_iface_udp6_output_node;
+
+void hicn_iface_udp_init (vlib_main_t * vm);
+
+#endif // __HICN_FACE_UDP_H__
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */