[HICN-713] Transport Library Major Refactoring 2

Co-authored-by: Luca Muscariello <muscariello@ieee.org>
Co-authored-by: Michele Papalini <micpapal@cisco.com>
Co-authored-by: Olivier Roques <oroques+fdio@cisco.com>
Co-authored-by: Giulio Grassi <gigrassi@cisco.com>
Signed-off-by: Mauro Sardara <msardara@cisco.com>
Change-Id: I5b2c667bad66feb45abdb5effe22ed0f6c85d1c2

1 files changed, 1305 insertions, 0 deletions

diff --git a/ctrl/libhicnctrl/src/modules/hicn_plugin_api.c b/ctrl/libhicnctrl/src/modules/hicn_plugin_api.c
new file mode 100644
index 000000000..e59a2e41e
--- /dev/null
+++ b/ctrl/libhicnctrl/src/modules/hicn_plugin_api.c
@@ -0,0 +1,1305 @@
+/*
+ * Copyright (c) 2017-2020 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.
+ */
+
+/**
+ * \file api.c
+ * \brief Implementation of hICN control library API
+ */
+
+#include "api_private.h"
+
+#include <assert.h>  // assert
+#include <fcntl.h>   // fcntl
+#include <math.h>    // log2
+#include <stdbool.h>
+#include <stdio.h>       // snprintf
+#include <string.h>      // memmove, strcasecmp
+#include <sys/socket.h>  // socket
+#include <unistd.h>      // close, fcntl
+#include <vapi/vapi_safe.h>
+#include <vapi/hicn.api.vapi.h>
+#include <vapi/ip.api.vapi.h>
+#include <vapi/udp.api.vapi.h>
+#include <vapi/interface.api.vapi.h>
+
+
+#if __GNUC__ >= 9
+#pragma GCC diagnostic ignored "-Waddress-of-packed-member"
+#endif
+
+#include <vnet/ip/ip46_address.h>
+
+#if __GNUC__ >= 9
+#pragma GCC diagnostic pop
+#endif
+
+#define APP_NAME "hicn_plugin"
+#define MAX_OUTSTANDING_REQUESTS 4
+#define RESPONSE_QUEUE_SIZE 2
+
+DEFINE_VAPI_MSG_IDS_HICN_API_JSON
+DEFINE_VAPI_MSG_IDS_INTERFACE_API_JSON
+DEFINE_VAPI_MSG_IDS_IP_API_JSON
+DEFINE_VAPI_MSG_IDS_UDP_API_JSON
+
+typedef struct {
+  vapi_ctx_t g_vapi_ctx_instance;
+  bool async;
+} vapi_skc_ctx_t;
+
+vapi_skc_ctx_t vapi_skc = {
+  .g_vapi_ctx_instance = NULL,
+  .async = false,
+};
+
+/**
+ * Messages to the forwarder might be multiplexed thanks to the seqNum fields in
+ * the header_control_message structure. The forwarder simply answers back the
+ * original sequence number. We maintain a map of such sequence number to
+ * outgoing queries so that replied can be demultiplexed and treated
+ * appropriately.
+ */
+/* TYPEDEF_MAP_H(hc_sock_map, int, hc_sock_request_t *); */
+/* TYPEDEF_MAP(hc_sock_map, int, hc_sock_request_t *, int_cmp, int_snprintf, */
+/*             generic_snprintf); */
+
+struct hc_sock_vpp_s {
+  /* This must be the first element of the struct */
+  hc_sock_t vft;
+
+  vapi_ctx_t g_vapi_ctx_instance;
+  char *url;
+  int fd;
+
+  size_t roff; /**< Read offset */
+  size_t woff; /**< Write offset */
+  u32 buffer[RECV_BUFLEN];
+  /* Next sequence number to be used for requests */
+  int seq;
+
+  bool async;
+};
+
+typedef struct hc_sock_vpp_s hc_sock_vpp_t;
+
+#define TO_HC_SOCK_VPP(s) (hc_sock_vpp_t*)(s)
+
+/******************************************************************************
+ * Message helper types and aliases
+ ******************************************************************************/
+
+#define foreach_hc_command             \
+  _(hicn_api_node_params_set)          \
+  _(hicn_api_node_params_set_reply)    \
+  _(hicn_api_node_params_get_reply)    \
+  _(hicn_api_node_stats_get_reply)     \
+  _(hicn_api_face_get)                 \
+  _(hicn_api_faces_details)            \
+  _(hicn_api_face_stats_details)       \
+  _(hicn_api_face_get_reply)           \
+  _(hicn_api_route_get)                \
+  _(hicn_api_route_get_reply)          \
+  _(hicn_api_routes_details)           \
+  _(hicn_api_strategies_get_reply)     \
+  _(hicn_api_strategy_get)             \
+  _(hicn_api_strategy_get_reply)
+
+
+typedef vapi_type_msg_header2_t hc_msg_header_t;
+
+typedef union {
+#define _(a) vapi_payload_ ## a a;
+  foreach_hc_command
+#undef _
+} hc_msg_payload_t;
+
+typedef struct __attribute__ ((__packed__)) {
+  hc_msg_header_t hdr;
+  hc_msg_payload_t payload;
+} hc_hicnp_t;
+
+typedef void (* NTOH)(void *msg);
+
+typedef struct __attribute__((__packed__)) {
+  hc_data_t *data;
+  uint32_t curr_msg;
+} callback_ctx_t;
+
+typedef struct __attribute__((__packed__)) {
+  hc_hicnp_t * hicnp_msg;
+  vapi_cb_t callback;
+  callback_ctx_t *callback_ctx;
+  NTOH ntoh;
+} hc_msg_s;
+
+/******************************************************************************
+ * Control socket
+ ******************************************************************************/
+
+static void _hc_sock_vpp_free(hc_sock_t *socket) {
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+  if (s->url) free(s->url);
+  close(s->fd);
+  free(s);
+
+  vapi_disconnect_safe();
+  vapi_skc.g_vapi_ctx_instance = NULL;
+}
+
+static int _hc_sock_vpp_get_next_seq(hc_sock_t *socket) {
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+  return vapi_gen_req_context(s->g_vapi_ctx_instance);
+}
+
+static int _hc_sock_vpp_set_nonblocking(hc_sock_t *socket) {
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+  s->async = 1;
+  return 0;
+}
+
+static int _hc_sock_vpp_get_fd(hc_sock_t *s) { return 1; }
+
+static int _hc_sock_vpp_connect(hc_sock_t *socket) {
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+  vapi_error_e rv = vapi_connect_safe(&s->g_vapi_ctx_instance, s->async);
+  if (rv != VAPI_OK)
+    goto ERR_CONNECT;
+
+  return 0;
+
+ERR_CONNECT:
+  ERROR("[hc_sock_connect] connection failed");
+  return -1;
+}
+
+static int _hc_sock_vpp_send(hc_sock_t *s, hc_msg_t *msg, size_t msglen, int seq) {
+  return -1;
+}
+
+static int _hc_sock_vpp_get_available(hc_sock_t *s, u8 **buffer, size_t *size) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_sock_vpp_recv(hc_sock_t *s) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_sock_vpp_process(hc_sock_t *s, hc_data_t **pdata) {
+  //NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_sock_vpp_callback(hc_sock_t * socket, hc_data_t ** pdata) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_sock_vpp_reset(hc_sock_t * socket) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/******************************************************************************
+ * Command-specific structures and functions
+ ******************************************************************************/
+
+
+/*----------------------------------------------------------------------------*
+ * Listeners
+ *----------------------------------------------------------------------------*/
+
+/* LISTENER CREATE */
+
+static int _hc_listener_create(hc_sock_t *s, hc_listener_t *listener) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_listener_create_async(hc_sock_t *s, hc_listener_t *listener) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/* LISTENER GET */
+static int _hc_listener_get(hc_sock_t *s, hc_listener_t *listener,
+                    hc_listener_t **listener_found) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/* LISTENER DELETE */
+
+static int _hc_listener_delete(hc_sock_t *s, hc_listener_t *listener) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_listener_delete_async(hc_sock_t *s, hc_listener_t *listener) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static vapi_error_e process_ip_info(struct vapi_ctx_s *ctx,
+                                    void *callback_ctx,
+                                    vapi_error_e rv,
+                                    bool is_last,
+                                    vapi_payload_ip_address_details *reply) {
+
+  if (is_last)
+    return 0;
+  hc_data_t *data = (hc_data_t *)callback_ctx;
+
+  if (data->size == data->current) {
+    data->buffer = realloc(data->buffer, sizeof(hc_listener_t) * data->size * 2);
+
+    if (!data->buffer)
+      return VAPI_ENOMEM;
+
+    data->size *=2;
+  }
+
+  hc_listener_t * listener = (hc_listener_t *)(data->buffer + data->current * sizeof(hc_listener_t));
+
+  if(reply->prefix.address.af == ADDRESS_IP4) {
+    memcpy(listener->local_addr.v4.as_u8, reply->prefix.address.un.ip4, IPV4_ADDR_LEN);
+    listener->family = AF_INET;
+  }
+  else {
+    memcpy(listener->local_addr.v6.as_u8, reply->prefix.address.un.ip6, IPV6_ADDR_LEN);
+    listener->family = AF_INET6;
+  }
+
+  listener->id = reply->sw_if_index;
+  data->current++;
+  return rv;
+}
+
+typedef struct {
+  u32 swif;
+  char interface_name[INTERFACE_LEN];
+} hc_vapi_interface_t;
+
+static vapi_error_e listener_list_complete_cb (
+                struct vapi_ctx_s *ctx,
+                void *callback_ctx,
+                vapi_error_e rv,
+                bool is_last,
+				        vapi_payload_sw_interface_details *reply) {
+
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  if (is_last)
+    return 0;
+
+  hc_data_t *data = (hc_data_t *)callback_ctx;
+
+  if (data->size == data->current) {
+    data->buffer = realloc(data->buffer, sizeof(hc_vapi_interface_t) * data->size * 2);
+
+    if (!data->buffer)
+      return VAPI_ENOMEM;
+
+    data->size *=2;
+  }
+
+  hc_vapi_interface_t *swif = &((hc_vapi_interface_t*)data->buffer)[data->current];
+
+  swif[0].swif = reply->sw_if_index;
+  memcpy(swif[0].interface_name, reply->interface_name, INTERFACE_LEN);
+
+  data->current++;
+
+  return rv;
+}
+
+
+/* LISTENER LIST */
+static int _hc_listener_list(hc_sock_t *socket, hc_data_t **pdata) {
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+  int retval = VAPI_OK;
+  vapi_lock();
+  vapi_msg_sw_interface_dump *hicnp_msg;
+  hicnp_msg = vapi_alloc_sw_interface_dump(s->g_vapi_ctx_instance);
+
+  if (!hicnp_msg) {
+    retval = VAPI_ENOMEM;
+    goto END;
+  }
+
+  hicnp_msg->payload.sw_if_index = ~0;
+  hicnp_msg->payload.name_filter_valid = 0;
+
+  hc_data_t *data = hc_data_create(0, sizeof(hc_vapi_interface_t),NULL);
+
+  if (!data) {
+    retval = -1;
+    goto END;
+  }
+
+  hc_data_t *data2 = hc_data_create(0, 1,NULL);
+
+  if (!data2) {
+    retval = -1;
+    goto END;
+  }
+
+  data->buffer = malloc(sizeof(hc_vapi_interface_t));
+  data->size = 1;
+
+  if (!data->buffer) {
+    free (data);
+    retval = -1;
+    goto FREE_DATA;
+  }
+
+  int ret = vapi_sw_interface_dump(s->g_vapi_ctx_instance, hicnp_msg, listener_list_complete_cb, data);
+
+  if (ret != VAPI_OK) {
+    free(data->buffer);
+    free(data);
+    retval = -1;
+    goto FREE_DATA_BUFFER;
+  }
+
+  data2->buffer = malloc(sizeof(hc_listener_t));
+  data2->size = 1;
+  data2->out_element_size = 1;
+
+  if (!data2->buffer) {
+    free (data2->buffer);
+    retval =1 -1;
+    goto CLEAN;
+  }
+
+  /* Query the forwarder for each interface */
+  for(int i = 0; i < data->current; i++) {
+    int index = data2->current;
+    vapi_msg_ip_address_dump* msg = vapi_alloc_ip_address_dump(s->g_vapi_ctx_instance);
+    msg->payload.sw_if_index = ((hc_vapi_interface_t *)data->buffer)[i].swif;
+    msg->payload.is_ipv6 = 0;
+    retval = vapi_ip_address_dump(s->g_vapi_ctx_instance, msg, process_ip_info, data2);
+    vapi_msg_ip_address_dump* msg2 = vapi_alloc_ip_address_dump(s->g_vapi_ctx_instance);
+
+    if (retval) goto CLEAN;
+
+    msg2->payload.sw_if_index = ((hc_vapi_interface_t *)data->buffer)[i].swif;
+    msg2->payload.is_ipv6 = 1;
+    retval = vapi_ip_address_dump(s->g_vapi_ctx_instance, msg2, process_ip_info, data2);
+    for (size_t j = index; j < data2->current; j++) {
+      memcpy(((hc_listener_t *)(data2->buffer))[j].interface_name, ((hc_vapi_interface_t*)(data->buffer))[i].interface_name, INTERFACE_LEN);
+      ((hc_listener_t *)(data2->buffer))[j].type = CONNECTION_TYPE_HICN;
+    }
+
+    if (retval) goto CLEAN;
+  }
+
+CLEAN:
+FREE_DATA_BUFFER:
+  free(data->buffer);
+FREE_DATA:
+  free(data);
+
+  data2->size = data2->current;
+  data2->out_element_size = sizeof(hc_listener_t);
+  *pdata = data2;
+ END:
+  vapi_unlock();
+  return retval;
+}
+
+static int _hc_listener_list_async(hc_sock_t *s, hc_data_t **pdata) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/*----------------------------------------------------------------------------*
+ * CONNECTION
+ *----------------------------------------------------------------------------*/
+
+/* CONNECTION CREATE */
+
+static int _hc_connection_create(hc_sock_t *s, hc_connection_t *connection) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_connection_create_async(hc_sock_t *s, hc_connection_t *connection) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/* CONNECTION GET */
+
+static int _hc_connection_get(hc_sock_t *s, hc_connection_t *connection,
+                      hc_connection_t **connection_found) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_connection_update_by_id(hc_sock_t *s, int hc_connection_id, hc_connection_t *connection) {
+  // Not implemented
+  return -1;
+}
+
+static int  _hc_connection_update(hc_sock_t *s, hc_connection_t *connection_current, hc_connection_t *connection_updated) {
+  // Not implemented
+  return -1;
+}
+
+/* CONNECTION DELETE */
+
+static int _hc_connection_delete(hc_sock_t *s, hc_connection_t *connection) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_connection_delete_async(hc_sock_t *s, hc_connection_t *connection) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/* CONNECTION LIST */
+
+static int _hc_connection_list(hc_sock_t *s, hc_data_t **pdata) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_connection_list_async(hc_sock_t *s, hc_data_t **pdata) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/* CONNECTION SET ADMIN STATE */
+
+static int _hc_connection_set_admin_state(hc_sock_t *s, const char *conn_id_or_name,
+                                  face_state_t state) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_connection_set_admin_state_async(hc_sock_t *s,
+                                        const char *conn_id_or_name,
+                                        face_state_t state) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+#ifdef WITH_POLICY
+
+static int _hc_connection_set_priority(hc_sock_t * s, const char * conn_id_or_name, uint32_t priority) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_connection_set_priority_async(hc_sock_t * s, const char * conn_id_or_name, uint32_t priority) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+#endif // WITH_POLICY
+
+static int _hc_connection_set_tags(hc_sock_t * s, const char * conn_id_or_name, policy_tags_t tags) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+static int _hc_connection_set_tags_async(hc_sock_t * s, const char * conn_id_or_name, policy_tags_t tags) {
+  // NOT IMPLEMENTED
+  return -1;
+}
+
+/*----------------------------------------------------------------------------*
+ * Routes
+ *----------------------------------------------------------------------------*/
+
+static vapi_error_e create_udp_tunnel_cb( vapi_ctx_t ctx,
+				void *callback_ctx,
+				vapi_error_e rv,
+				bool is_last,
+				vapi_payload_hicn_api_udp_tunnel_add_del_reply *reply) {
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  if (reply->retval != VAPI_OK)
+    return reply->retval;
+
+  u32 * uei = (u32*) callback_ctx;
+  *uei = reply->uei;
+
+  return reply->retval;
+}
+
+/* ROUTE CREATE */
+static vapi_error_e parse_route_create( vapi_ctx_t ctx,
+				void *callback_ctx,
+				vapi_error_e rv,
+				bool is_last,
+				vapi_payload_ip_route_add_del_reply *reply) {
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  if (reply->retval != VAPI_OK)
+    return reply->retval;
+
+  return reply->retval;
+}
+
+static vapi_error_e hicn_enable_cb( vapi_ctx_t ctx,
+                              void *callback_ctx,
+                              vapi_error_e rv,
+                              bool is_last,
+                              vapi_payload_hicn_api_enable_disable_reply *reply) {
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  return reply->retval;
+}
+
+static int _hc_route_create_internal(hc_sock_t *socket, hc_route_t *route, bool async) {
+  if (!IS_VALID_FAMILY(route->family)) return -1;
+
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+  int ret;
+  vapi_lock();
+
+  vapi_msg_ip_route_add_del *hicnp_msg = vapi_alloc_ip_route_add_del(s->g_vapi_ctx_instance, 1);
+
+  hicnp_msg->payload.is_add = 1;
+  if (route->family == AF_INET) {
+    memcpy(&hicnp_msg->payload.route.prefix.address.un.ip4[0], &route->remote_addr.v4, 4);
+    hicnp_msg->payload.route.prefix.address.af = ADDRESS_IP4;
+  }
+  else {
+    memcpy(&hicnp_msg->payload.route.prefix.address.un.ip6[0], &route->remote_addr.v6, 16);
+    hicnp_msg->payload.route.prefix.address.af = ADDRESS_IP6;
+  }
+
+  hicnp_msg->payload.route.prefix.len = route->len;
+
+  hicnp_msg->payload.route.paths[0].sw_if_index = ~0;
+  hicnp_msg->payload.route.paths[0].table_id = 0;
+
+  hc_face_t *face = &(route->face);
+  switch (face->face.type) {
+    case FACE_TYPE_HICN:
+      {
+        if (ip46_address_is_ip4((ip46_address_t *)(&(face->face.remote_addr)))) {
+          memcpy(&(hicnp_msg->payload.route.paths[0].nh.address.ip4), &face->face.remote_addr.v4, sizeof(ip4_address_t));
+          hicnp_msg->payload.route.paths[0].proto = FIB_API_PATH_NH_PROTO_IP4;
+        }
+        else{
+          memcpy(&(hicnp_msg->payload.route.paths[0].nh.address.ip6), &face->face.remote_addr.v6, sizeof(ip6_address_t));
+          hicnp_msg->payload.route.paths[0].proto = FIB_API_PATH_NH_PROTO_IP6;
+        }
+
+        hicnp_msg->payload.route.paths[0].type = FIB_API_PATH_FLAG_NONE;
+        hicnp_msg->payload.route.paths[0].flags = FIB_API_PATH_FLAG_NONE;
+
+        break;
+      }
+    case FACE_TYPE_UDP:
+      {
+        vapi_msg_hicn_api_udp_tunnel_add_del *msg = NULL;
+        u32 uei = ~0;
+
+        if (ip46_address_is_ip4((ip46_address_t *)(&(face->face.remote_addr))) &&
+            ip46_address_is_ip4((ip46_address_t *)(&(face->face.local_addr)))) {
+
+          msg = vapi_alloc_hicn_api_udp_tunnel_add_del(s->g_vapi_ctx_instance);
+          memcpy(msg->payload.src_addr.un.ip4, &face->face.local_addr.v4, sizeof(ip4_address_t));
+          msg->payload.src_addr.af = ADDRESS_IP4;
+
+          memcpy(msg->payload.dst_addr.un.ip4, &face->face.remote_addr.v4, sizeof(ip4_address_t));
+          msg->payload.dst_addr.af = ADDRESS_IP4;
+
+        } else if (!ip46_address_is_ip4((ip46_address_t *)(&(route->face.face.remote_addr))) &&
+                  !ip46_address_is_ip4((ip46_address_t *)(&(route->face.face.local_addr)))) {
+
+          msg = vapi_alloc_hicn_api_udp_tunnel_add_del(s->g_vapi_ctx_instance);
+          memcpy(msg->payload.src_addr.un.ip6, &face->face.local_addr.v6, sizeof(ip6_address_t));
+          msg->payload.src_addr.af = ADDRESS_IP4;
+
+          memcpy(msg->payload.dst_addr.un.ip6, &face->face.remote_addr.v6, sizeof(ip6_address_t));
+          msg->payload.dst_addr.af = ADDRESS_IP6;
+
+        } else {
+          //NOT IMPLEMENTED
+          ret = -1;
+          goto done;
+        }
+
+        msg->payload.src_port = face->face.local_port;
+        msg->payload.dst_port = face->face.remote_port;
+        msg->payload.is_add = 1;
+
+        int ret = vapi_hicn_api_udp_tunnel_add_del(s->g_vapi_ctx_instance, msg, create_udp_tunnel_cb, &uei);
+
+        if(ret) {
+          vapi_msg_free(s->g_vapi_ctx_instance, hicnp_msg);
+          goto done;
+        }
+
+        hicnp_msg->payload.route.paths[0].type = FIB_API_PATH_TYPE_UDP_ENCAP;
+        hicnp_msg->payload.route.paths[0].flags = FIB_API_PATH_FLAG_NONE;
+        hicnp_msg->payload.route.paths[0].nh.obj_id = uei;
+        break;
+      }
+    default:
+      ret = -1;
+      goto done;
+  }
+
+  ret = vapi_ip_route_add_del(s->g_vapi_ctx_instance, hicnp_msg, parse_route_create, NULL);
+
+  if (ret)
+    goto done;
+
+  vapi_msg_hicn_api_enable_disable *msg = vapi_alloc_hicn_api_enable_disable(s->g_vapi_ctx_instance);
+
+  if (route->family == AF_INET) {
+    memcpy(&msg->payload.prefix.address.un.ip4[0], &route->remote_addr.v4, 4);
+    msg->payload.prefix.address.af = ADDRESS_IP4;
+  }
+  else {
+    memcpy(&msg->payload.prefix.address.un.ip6[0], &route->remote_addr.v6, 16);
+    msg->payload.prefix.address.af = ADDRESS_IP6;
+  }
+
+  msg->payload.prefix.len = route->len;
+  msg->payload.enable_disable = 1;
+
+  ret = vapi_hicn_api_enable_disable(s->g_vapi_ctx_instance, msg, hicn_enable_cb, NULL);
+done:
+  vapi_unlock();
+  return ret;
+}
+
+static int _hc_route_create(hc_sock_t *s, hc_route_t *route) {
+  return _hc_route_create_internal(s, route, false);
+}
+
+static int _hc_route_create_async(hc_sock_t *s, hc_route_t *route) {
+  return _hc_route_create_internal(s, route, true);
+}
+
+/* ROUTE DELETE */
+static vapi_error_e parse_route_delete( vapi_ctx_t ctx,
+				void *callback_ctx,
+				vapi_error_e rv,
+				bool is_last,
+				vapi_payload_ip_route_add_del_reply *reply) {
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  return reply->retval;
+}
+
+static int _hc_route_delete_internal(hc_sock_t *socket, hc_route_t *route, bool async) {
+  if (!IS_VALID_FAMILY(route->family)) return -1;
+
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+
+  vapi_lock();
+  vapi_msg_ip_route_add_del *hicnp_msg = vapi_alloc_ip_route_add_del(s->g_vapi_ctx_instance, 1);
+
+  hicnp_msg->payload.is_add = 0;
+  if (route->family == AF_INET) {
+    memcpy(&hicnp_msg->payload.route.prefix.address.un.ip4[0], &route->remote_addr.v4, 4);
+    hicnp_msg->payload.route.prefix.address.af = ADDRESS_IP4;
+  }
+  else {
+    memcpy(&hicnp_msg->payload.route.prefix.address.un.ip6[0], &route->remote_addr.v6, 16);
+    hicnp_msg->payload.route.prefix.address.af = ADDRESS_IP6;
+  }
+
+  hicnp_msg->payload.route.prefix.len = route->len;
+
+  hicnp_msg->payload.route.paths[0].sw_if_index = ~0;
+  hicnp_msg->payload.route.paths[0].table_id = 0;
+
+  hc_face_t *face = &(route->face);
+  switch (face->face.type) {
+    case FACE_TYPE_HICN:
+      {
+        if (ip46_address_is_ip4((ip46_address_t *)(&(face->face.remote_addr)))) {
+          memcpy(&(hicnp_msg->payload.route.paths[0].nh.address.ip4), &face->face.remote_addr.v4, sizeof(ip4_address_t));
+          hicnp_msg->payload.route.paths[0].proto = FIB_API_PATH_NH_PROTO_IP4;
+        }
+        else{
+          memcpy(&(hicnp_msg->payload.route.paths[0].nh.address.ip6), &face->face.remote_addr.v6, sizeof(ip6_address_t));
+          hicnp_msg->payload.route.paths[0].proto = FIB_API_PATH_NH_PROTO_IP6;
+        }
+
+        hicnp_msg->payload.route.paths[0].type = FIB_API_PATH_FLAG_NONE;
+        hicnp_msg->payload.route.paths[0].flags = FIB_API_PATH_FLAG_NONE;
+
+        break;
+      }
+    case FACE_TYPE_UDP:
+      {
+        hicnp_msg->payload.route.paths[0].type = FIB_API_PATH_TYPE_UDP_ENCAP;
+        hicnp_msg->payload.route.paths[0].flags = FIB_API_PATH_FLAG_NONE;
+        hicnp_msg->payload.route.paths[0].nh.obj_id = face->face.netdevice.index;
+        break;
+      }
+    default:
+      return -1;
+  }
+
+  vapi_error_e ret = vapi_ip_route_add_del(s->g_vapi_ctx_instance, hicnp_msg, parse_route_delete, NULL);
+
+  vapi_unlock();
+  return ret;
+}
+
+static int _hc_route_delete(hc_sock_t *s, hc_route_t *route) {
+  return _hc_route_delete_internal(s, route, false);
+}
+
+static int _hc_route_delete_async(hc_sock_t *s, hc_route_t *route) {
+  return _hc_route_delete_internal(s, route, true);
+}
+
+static vapi_error_e parse_udp_encap_list( vapi_ctx_t ctx,
+			      void *callback_ctx,
+			      vapi_error_e rv,
+			      bool is_last,
+			      vapi_payload_udp_encap_details *reply) {
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  hc_face_t * face = (hc_face_t *)callback_ctx;
+
+  if (face->face.netdevice.index == reply->udp_encap.id)
+  {
+    switch(reply->udp_encap.src_ip.af) {
+      case ADDRESS_IP4:
+      {
+        memcpy(&face->face.local_addr.v4, &(reply->udp_encap.src_ip.un.ip4), sizeof(ip4_address_t));
+        memcpy(&face->face.remote_addr.v4, &(reply->udp_encap.dst_ip.un.ip4), sizeof(ip4_address_t));
+        break;
+      }
+      case ADDRESS_IP6:
+      {
+        memcpy(&face->face.local_addr.v6, &(reply->udp_encap.src_ip.un.ip6), sizeof(ip6_address_t));
+        memcpy(&face->face.remote_addr.v6, &(reply->udp_encap.dst_ip.un.ip6), sizeof(ip6_address_t));
+        break;
+      }
+      default:
+      break;
+    }
+
+    face->face.local_port = reply->udp_encap.src_port;
+    face->face.remote_port = reply->udp_encap.dst_port;
+  }
+  return rv;
+}
+
+static int _fill_face_with_info(hc_face_t * face, vapi_type_fib_path *path, hc_sock_t *s) {
+  switch(path->type){
+    case FIB_API_PATH_FLAG_NONE:
+    {
+      face->face.type = FACE_TYPE_HICN;
+      switch(path->proto){
+        case FIB_API_PATH_NH_PROTO_IP4:
+          memcpy(&face->face.remote_addr.v4, &(path->nh.address.ip4), sizeof(ip4_address_t));
+        break;
+        case FIB_API_PATH_NH_PROTO_IP6:
+          memcpy(&face->face.remote_addr.v6, &(path->nh.address.ip6), sizeof(ip6_address_t));
+        break;
+        default:
+        break;
+      }
+      face->face.netdevice.index = path->sw_if_index;
+    }
+    break;
+    case FIB_API_PATH_TYPE_UDP_ENCAP:
+    {
+      face->face.type = FACE_TYPE_UDP;
+      face->face.netdevice.index = clib_net_to_host_u32(path->nh.obj_id);
+      // Let's make the compiler happy
+      (void)parse_udp_encap_list;
+      //vapi_msg_udp_encap_dump *msg;
+      //msg = vapi_alloc_udp_encap_dump(s->g_vapi_ctx_instance);
+      //vapi_udp_encap_dump(s->g_vapi_ctx_instance, msg, parse_udp_encap_list, face);
+    }
+    break;
+    default:
+      return -1;
+  }
+  return 0;
+}
+
+/* ROUTE LIST */
+typedef struct hicn_route_socket_s {
+  hc_data_t *data;
+  hc_sock_t *s;
+} hicn_route_socket_t;
+
+static vapi_error_e parse_route_list( vapi_ctx_t ctx,
+			      void *callback_ctx,
+			      vapi_error_e rv,
+			      bool is_last,
+			      vapi_payload_ip_route_details *reply) {
+
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  hicn_route_socket_t *rs = (hicn_route_socket_t *)callback_ctx;
+  hc_data_t *data = rs->data;
+
+  u8 found = false;
+  for (int j = 0; j < reply->route.n_paths; j++){
+    for (int i = 0; i < data->size && !found; i++) {
+      hc_route_t * route = &((hc_route_t*)(data->buffer))[i];
+
+      if(ip46_address_is_ip4((ip46_address_t *)&(route->remote_addr)) &&
+        memcmp(route->remote_addr.v4.as_u8, reply->route.prefix.address.un.ip4, sizeof(ip4_address_t)) == 0 &&
+        route->len == reply->route.prefix.len && route->face_id == ~0) {
+          _fill_face_with_info(&(route->face), &reply->route.paths[j], rs->s);
+          found = true;
+      } else if (memcmp(route->remote_addr.v6.as_u8, reply->route.prefix.address.un.ip6, sizeof(ip6_address_t)) == 0 &&
+                route->len == reply->route.prefix.len && route->face_id == ~0) {
+          _fill_face_with_info(&(route->face), &reply->route.paths[j], rs->s);
+          found = true;
+      }
+    }
+  }
+
+  return rv;
+}
+
+static vapi_error_e parse_hicn_route_list( vapi_ctx_t ctx,
+			      void *callback_ctx,
+			      vapi_error_e rv,
+			      bool is_last,
+			      vapi_payload_hicn_api_routes_details *reply) {
+
+  if (reply == NULL || rv != VAPI_OK)
+    return rv;
+
+  hc_data_t *data = (hc_data_t *)callback_ctx;
+
+  int empty_spots = data->size - data->current;
+  if (empty_spots < reply->nfaces) {
+    int new_size = data->size + (reply->nfaces - empty_spots);
+    data->buffer = realloc(data->buffer, sizeof(hc_route_t) * (new_size));
+    if (!data->buffer)
+      return VAPI_ENOMEM;
+
+    data->size =new_size;
+  }
+
+  for (int i = 0; i < reply->nfaces; i++) {
+    hc_route_t * route = &((hc_route_t*)(data->buffer))[data->current];
+    route->face_id = ~0;
+    route->cost = 1;
+    route->len = reply->prefix.len;
+    if (reply->prefix.address.af == ADDRESS_IP6)
+      {
+        memcpy(route->remote_addr.v6.as_u8, reply->prefix.address.un.ip6, 16);
+      }
+      else
+      {
+        memcpy(route->remote_addr.v4.as_u8, reply->prefix.address.un.ip4, 4);
+      }
+    route->family = reply->prefix.address.af == ADDRESS_IP6? AF_INET6 : AF_INET;
+    data->current++;
+  }
+
+  return rv;
+}
+
+static int _hc_route_list_internal(hc_sock_t *socket, hc_data_t **pdata, bool async) {
+  hc_sock_vpp_t *s = TO_HC_SOCK_VPP(socket);
+  vapi_lock();
+
+  vapi_msg_hicn_api_routes_dump *msg;
+  msg = vapi_alloc_hicn_api_routes_dump(s->g_vapi_ctx_instance);
+
+  hc_data_t *data = hc_data_create(0, sizeof(hc_route_t),NULL);
+  int ret = VAPI_OK;
+
+  if (!data){
+    ret = -1;
+    goto err;
+  }
+
+  data->buffer = malloc(sizeof(hc_route_t));
+  data->size = 1;
+
+  if (!data->buffer) {
+    ret = -1;
+    goto err_free;
+  }
+
+  ret = vapi_hicn_api_routes_dump(s->g_vapi_ctx_instance, msg, parse_hicn_route_list, data);
+
+  if (ret != VAPI_OK)
+    goto err_free;
+
+  vapi_msg_ip_route_dump *hicnp_msg;
+  hicnp_msg = vapi_alloc_ip_route_dump(s->g_vapi_ctx_instance);
+  hicnp_msg->payload.table.table_id = 0;
+  hicnp_msg->payload.table.is_ip6 = 1;
+
+  hicn_route_socket_t ctx = {
+    .data = data,
+    .s = socket,
+  };
+
+  ret = vapi_ip_route_dump(s->g_vapi_ctx_instance, hicnp_msg, parse_route_list, &ctx);
+
+  hicnp_msg = vapi_alloc_ip_route_dump(s->g_vapi_ctx_instance);
+  hicnp_msg->payload.table.table_id = 0;
+  hicnp_msg->payload.table.is_ip6 = 0;
+
+  ret = vapi_ip_route_dump(s->g_vapi_ctx_instance, hicnp_msg, parse_route_list, &ctx);
+
+  if (ret != VAPI_OK)
+    goto err_free;
+
+  *pdata = data;
+
+  vapi_unlock();
+  return ret;
+
+ err_free:
+  free(data);
+ err:
+  vapi_unlock();
+  return ret;
+}
+
+static int _hc_route_list(hc_sock_t *s, hc_data_t **pdata) {
+  return _hc_route_list_internal(s, pdata, false);
+}
+
+static int _hc_route_list_async(hc_sock_t *s) {
+  return _hc_route_list_internal(s, NULL, true);
+}
+
+/*----------------------------------------------------------------------------*
+ * Face
+ *
+ * Face support is not directly available in hicn-light, but we can offer such
+ * an interface through a combination of listeners and connections. The code
+ * starts with some conversion functions between faces/listeners/connections.
+ *
+ * We also need to make sure that there always exist a (single) listener when a
+ * connection is created, and in the hICN face case, that there is a single
+ * connection attached to this listener.
+ *
+ *----------------------------------------------------------------------------*/
+
+static int _hc_face_create(hc_sock_t *s, hc_face_t *face) {
+  ERROR("Face creation implemented.");
+  return -1;
+}
+
+static int _hc_face_get(hc_sock_t * socket, hc_face_t * face, hc_face_t ** face_found) {
+  ERROR("Face deletion not implemented.");
+  return -1;
+}
+
+static int _hc_face_delete(hc_sock_t *s, hc_face_t *face) {
+  ERROR("Face deletion not implemented.");
+  return -1;
+}
+
+/* FACE LIST */
+
+static int _hc_face_list(hc_sock_t *s, hc_data_t **pdata) {
+  ERROR("Face list not implemented.");
+  return -1;
+}
+
+static int _hc_face_list_async(hc_sock_t *s) {
+  return 0;
+}
+
+static int _hc_face_set_admin_state(
+    hc_sock_t *s, const char *conn_id_or_name,  // XXX wrong identifier
+    face_state_t admin_state) {
+  return 0;
+}
+
+#ifdef WITH_POLICY
+static int _hc_face_set_priority(hc_sock_t * s, const char * conn_id_or_name, uint32_t priority) {
+  ERROR("Face set priority not implemented.");
+  return -1;
+}
+
+static int _hc_face_set_tags(hc_sock_t * s, const char * conn_id_or_name, policy_tags_t tags) {
+  ERROR("Face set tags not implemented.");
+  return -1;
+}
+#endif // WITH_POLICY
+
+/*----------------------------------------------------------------------------*
+ * Punting
+ *----------------------------------------------------------------------------*/
+
+static int _hc_punting_create_internal(hc_sock_t *s, hc_punting_t *punting, bool async) {
+  return -1;
+}
+
+static int _hc_punting_create(hc_sock_t *s, hc_punting_t *punting) {
+  return _hc_punting_create_internal(s, punting, false);
+}
+
+static int _hc_punting_create_async(hc_sock_t *s, hc_punting_t *punting) {
+  return _hc_punting_create_internal(s, punting, true);
+}
+
+static int _hc_punting_get(hc_sock_t *s, hc_punting_t *punting,
+                   hc_punting_t **punting_found) {
+  ERROR("hc_punting_get not (yet) implemented.");
+  return -1;
+}
+
+static int _hc_punting_delete(hc_sock_t *s, hc_punting_t *punting) {
+  ERROR("hc_punting_delete not (yet) implemented.");
+  return -1;
+}
+
+static int _hc_punting_list(hc_sock_t *s, hc_data_t **pdata) {
+  ERROR("hc_punting_list not (yet) implemented.");
+  return -1;
+}
+
+/*----------------------------------------------------------------------------*
+ * Cache
+ *----------------------------------------------------------------------------*/
+
+static int _hc_cache_set_store_internal(hc_sock_t *s, int enabled, bool async) {
+  return 0;
+}
+
+static int _hc_cache_set_store(hc_sock_t *s, int enabled) {
+  return _hc_cache_set_store_internal(s, enabled, false);
+}
+
+static int _hc_cache_set_store_async(hc_sock_t *s, int enabled) {
+  return _hc_cache_set_store_internal(s, enabled, true);
+}
+
+static int _hc_cache_set_serve_internal(hc_sock_t *s, int enabled, bool async) {
+  return 0;
+}
+
+static int _hc_cache_set_serve(hc_sock_t *s, int enabled) {
+  return _hc_cache_set_serve_internal(s, enabled, false);
+}
+
+static int _hc_cache_set_serve_async(hc_sock_t *s, int enabled) {
+  return _hc_cache_set_serve_internal(s, enabled, true);
+}
+
+/*----------------------------------------------------------------------------*
+ * Strategy
+ *----------------------------------------------------------------------------*/
+
+// per prefix
+static int _hc_strategy_set(hc_sock_t *s /* XXX */) { return 0; }
+
+static int _hc_strategy_list(hc_sock_t *s, hc_data_t **data) {
+  return 0;
+}
+
+/*----------------------------------------------------------------------------*
+ * WLDR
+ *----------------------------------------------------------------------------*/
+
+// per connection
+static int _hc_wldr_set(hc_sock_t *s /* XXX */) { return 0; }
+
+/*----------------------------------------------------------------------------*
+ * MAP-Me
+ *----------------------------------------------------------------------------*/
+
+static int _hc_mapme_set(hc_sock_t *s, int enabled) { return 0; }
+
+static int _hc_mapme_set_discovery(hc_sock_t *s, int enabled) { return 0; }
+
+static int _hc_mapme_set_timescale(hc_sock_t *s, double timescale) { return 0; }
+
+static int _hc_mapme_set_retx(hc_sock_t *s, double timescale) { return 0; }
+
+/*----------------------------------------------------------------------------*
+ * Policy
+ *----------------------------------------------------------------------------*/
+
+#ifdef WITH_POLICY
+
+/* POLICY CREATE */
+
+static int _hc_policy_create_internal(hc_sock_t * socket, hc_policy_t * policy, bool async) {
+  return -1;
+}
+
+static int
+_hc_policy_create(hc_sock_t * s, hc_policy_t * policy) {
+  return _hc_policy_create_internal(s, policy, false);
+}
+
+static int _hc_policy_create_async(hc_sock_t * s, hc_policy_t * policy) {
+  return _hc_policy_create_internal(s, policy, true);
+}
+
+/* POLICY DELETE */
+
+static int _hc_policy_delete_internal(hc_sock_t * socket, hc_policy_t * policy, bool async) {
+  return -1;
+}
+
+static int _hc_policy_delete(hc_sock_t * s, hc_policy_t * policy) {
+  return _hc_policy_delete_internal(s, policy, false);
+}
+
+static int _hc_policy_delete_async(hc_sock_t * s, hc_policy_t * policy) {
+  return _hc_policy_delete_internal(s, policy, true);
+}
+
+/* POLICY LIST */
+
+static int
+_hc_policy_list_internal(hc_sock_t * socket, hc_data_t ** pdata, bool async) {
+  return -1;
+}
+
+static int _hc_policy_list(hc_sock_t * s, hc_data_t ** pdata) {
+  return _hc_policy_list_internal(s, pdata, false);
+}
+
+static int _hc_policy_list_async(hc_sock_t * s, hc_data_t ** pdata) {
+  return _hc_policy_list_internal(s, pdata, true);
+}
+
+#endif /* WITH_POLICY */
+
+static hc_sock_t hc_sock_vpp_interface = (hc_sock_t) {
+    .hc_sock_get_next_seq = _hc_sock_vpp_get_next_seq,
+    .hc_sock_set_nonblocking = _hc_sock_vpp_set_nonblocking,
+    .hc_sock_get_fd = _hc_sock_vpp_get_fd,
+    .hc_sock_connect = _hc_sock_vpp_connect,
+    .hc_sock_get_available = _hc_sock_vpp_get_available,
+    .hc_sock_send = _hc_sock_vpp_send,
+    .hc_sock_recv = _hc_sock_vpp_recv,
+    .hc_sock_process = _hc_sock_vpp_process,
+    .hc_sock_callback = _hc_sock_vpp_callback,
+    .hc_sock_reset = _hc_sock_vpp_reset,
+    .hc_sock_free = _hc_sock_vpp_free,
+    .hc_listener_create = _hc_listener_create,
+    .hc_listener_create_async = _hc_listener_create_async,
+    .hc_listener_get = _hc_listener_get,
+    .hc_listener_delete = _hc_listener_delete,
+    .hc_listener_delete_async = _hc_listener_delete_async,
+    .hc_listener_list = _hc_listener_list,
+    .hc_listener_list_async = _hc_listener_list_async,
+    .hc_connection_create = _hc_connection_create,
+    .hc_connection_create_async = _hc_connection_create_async,
+    .hc_connection_get = _hc_connection_get,
+    .hc_connection_update_by_id = _hc_connection_update_by_id,
+    .hc_connection_update = _hc_connection_update,
+    .hc_connection_delete = _hc_connection_delete,
+    .hc_connection_delete_async = _hc_connection_delete_async,
+    .hc_connection_list = _hc_connection_list,
+    .hc_connection_list_async = _hc_connection_list_async,
+    .hc_connection_set_admin_state = _hc_connection_set_admin_state,
+    .hc_connection_set_admin_state_async = _hc_connection_set_admin_state_async,
+
+#ifdef WITH_POLICY
+    .hc_connection_set_priority = _hc_connection_set_priority,
+    .hc_connection_set_priority_async = _hc_connection_set_priority_async,
+    .hc_connection_set_tags = _hc_connection_set_tags,
+    .hc_connection_set_tags_async = _hc_connection_set_tags_async,
+#endif // WITH_POLICY
+
+    .hc_face_create = _hc_face_create,
+    .hc_face_get = _hc_face_get,
+    .hc_face_delete = _hc_face_delete,
+    .hc_face_list = _hc_face_list,
+    .hc_face_list_async = _hc_face_list_async,
+    .hc_face_set_admin_state = _hc_face_set_admin_state,
+
+#ifdef WITH_POLICY
+    .hc_face_set_priority = _hc_face_set_priority,
+    .hc_face_set_tags = _hc_face_set_tags,
+#endif // WITH_POLICY
+
+    .hc_route_create = _hc_route_create,
+    .hc_route_create_async = _hc_route_create_async,
+    .hc_route_delete = _hc_route_delete,
+    .hc_route_delete_async = _hc_route_delete_async,
+    .hc_route_list = _hc_route_list,
+    .hc_route_list_async = _hc_route_list_async,
+
+    .hc_punting_create = _hc_punting_create,
+    .hc_punting_create_async = _hc_punting_create_async,
+    .hc_punting_get = _hc_punting_get,
+    .hc_punting_delete = _hc_punting_delete,
+    .hc_punting_list = _hc_punting_list,
+
+    .hc_cache_set_store = _hc_cache_set_store,
+    .hc_cache_set_store_async = _hc_cache_set_store_async,
+    .hc_cache_set_serve = _hc_cache_set_serve,
+    .hc_cache_set_serve_async = _hc_cache_set_serve_async,
+
+    .hc_strategy_list = _hc_strategy_list,
+    .hc_strategy_set = _hc_strategy_set,
+    .hc_wldr_set = _hc_wldr_set,
+
+    .hc_mapme_set = _hc_mapme_set,
+    .hc_mapme_set_discovery = _hc_mapme_set_discovery,
+    .hc_mapme_set_timescale = _hc_mapme_set_timescale,
+    .hc_mapme_set_retx = _hc_mapme_set_retx,
+
+#ifdef WITH_POLICY
+    .hc_policy_create = _hc_policy_create,
+    .hc_policy_create_async = _hc_policy_create_async,
+    .hc_policy_delete = _hc_policy_delete,
+    .hc_policy_delete_async = _hc_policy_delete_async,
+    .hc_policy_list = _hc_policy_list,
+    .hc_policy_list_async = _hc_policy_list_async
+#endif // WITH_POLICY
+};
+
+hc_sock_t *_hc_sock_create_url(const char *url) {
+  // NOT IMPLEMENTED
+  return NULL;
+}
+
+hc_sock_t *_hc_sock_create(void) {
+  hc_sock_vpp_t *s = malloc(sizeof(hc_sock_vpp_t));
+
+  if (!s) goto ERR_SOCK;
+
+  memset(s, 0, sizeof(hc_sock_vpp_t));
+
+  s->vft = hc_sock_vpp_interface;
+
+  // By default the socket is blocking -- not async
+  s->async = 0;
+
+  return (hc_sock_t *)(s);
+
+ERR_SOCK:
+  return NULL;
+}
\ No newline at end of file