feat: Due to the deep modifications related to names and packet format,

this task cover a large part of the codebase and involves several changes:

- the library provides a name data structure (hicn_name_t ), which is composed
  of a name prefix (hicn_name_prefix_t) and a name suffix (hicn_name_suffix_t),
  and it has been extended to provide all support functions required for name
  manipulation, including common prefix computation, as required for the Longest
  Prefix Match (LPM)in the forwarder, in addition to Exact Prefix Match (EPM).
- all code has been rewritten to use this data structure instead of having for
  instance the forwarder define its own name class (used to be Name and NameBitVector)
  the code has been refactored to minimize name allocations and copies, one remaining
  aspect is the difference of name storage between PIT and CS entries (respectively
  in the PIT entry, and in the message buffer), which causes the packet cache
  index to be updated when a PIT entry is converted into a CS entry. By storing
  the name in the PIT/CS entry everytime, we might save on this operation).
- hicn-light FIB has been rewritten : code has been refactored and should now be
  shorter and documented; unit tests have been drafted but more would be required
  to cover all cases and match the algorithms to add/remove nodes, as specified in the doc.
  all protocol details and hICN header formats are now abstracted by the library
  for the forwarder (and thus header.h and  protocols/*.h have been removed from
  public includes, and replaced by packet.h providing protocol agnostic packet
  level functions, completely replacing the compat.h header that used to provide
  similar functions.
- this works by exposing a opaque buffer to the application (a kind of socket buffer)
  which is used by the lib to cache the packet format and offsets of the different
  layers in the buffer and provider efficient operations (the packet format is
  either defined for packet construction, or guessed at ingress, and this structure
  is updated accordingly only once).

Co-authored-by: Jordan Augé <jordan.auge+fdio@cisco.com>
Signed-off-by: Luca Muscariello <muscariello@ieee.org>
Change-Id: I31e321897f85f0267fe8ba4720363c180564492f

1 files changed, 0 insertions, 1268 deletions

diff --git a/lib/src/compat.c b/lib/src/compat.c
deleted file mode 100644
index cb771dbdd..000000000
--- a/lib/src/compat.c
+++ /dev/null
@@ -1,1268 +0,0 @@
-/*
- * Copyright (c) 2021 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 compat.c
- * @brief Implementation of the compatibility layer.
- */
-#ifndef _WIN32
-#include <netinet/in.h>
-#endif
-#include <string.h> // memset
-#include <stddef.h> // offsetof
-
-#include <hicn/common.h>
-#include <hicn/compat.h>
-#include <hicn/error.h>
-#include <hicn/header.h>
-#include <hicn/name.h>
-#include <hicn/ops.h>
-
-#define member_size(type, member) sizeof (((type *) 0)->member)
-#define ARRAY_SIZE(a)		  (sizeof (a) / sizeof (*(a)))
-
-#define HICN_NAME_COMPONENT_SIZE 2
-
-int
-hicn_packet_get_format (const hicn_header_t *h, hicn_format_t *format)
-{
-  *format = HF_UNSPEC;
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 4:
-      switch (h->v4.ip.protocol)
-	{
-	case IPPROTO_TCP:
-	  if (h->v4.tcp.flags & AH_FLAG)
-	    *format = HF_INET_TCP_AH;
-	  else
-	    *format = HF_INET_TCP;
-	  break;
-	case IPPROTO_UDP:
-	  if (h->v4.newhdr.flags & HICN_NEW_FLAG_SIG)
-	    *format = HF_INET_UDP_AH;
-	  else
-	    *format = HF_INET_UDP;
-	  break;
-	case IPPROTO_ICMP:
-	  *format = HF_INET_ICMP;
-	  break;
-	default:
-	  return HICN_LIB_ERROR_NOT_HICN;
-	}
-      break;
-    case 6:
-      switch (h->v6.ip.nxt)
-	{
-	case IPPROTO_TCP:
-	  if (h->v6.tcp.flags & AH_FLAG)
-	    *format = HF_INET6_TCP_AH;
-	  else
-	    *format = HF_INET6_TCP;
-	  break;
-	case IPPROTO_UDP:
-	  if (h->v6.newhdr.flags & HICN_NEW_FLAG_SIG)
-	    *format = HF_INET6_UDP_AH;
-	  else
-	    *format = HF_INET6_UDP;
-	  break;
-	case IPPROTO_ICMPV6:
-	  *format = HF_INET6_ICMP;
-	  break;
-	default:
-	  return HICN_LIB_ERROR_NOT_HICN;
-	}
-      break;
-    case 9:
-      {
-	uint8_t ah = (HICN_NEW_FLAG_SIG & h->protocol.newhdr.flags);
-	*format = HF_NEW_AH * ah + (1 - ah) * HF_NEW;
-	break;
-      }
-    default:
-      return HICN_LIB_ERROR_NOT_HICN;
-    }
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-/**
- * @brief Convert (former) hICN format into (newer) hICN type
- * @param [in] format - hICN format
- * @return hICN type, all zero'ed if type is unknown
- */
-hicn_type_t
-hicn_format_to_type (hicn_format_t format)
-{
-  switch (format)
-    {
-    case HF_INET_TCP:
-      return HICN_TYPE_IPV4_TCP;
-    case HF_INET_UDP:
-      return HICN_TYPE_IPV4_UDP;
-    case HF_INET6_TCP:
-      return HICN_TYPE_IPV6_TCP;
-    case HF_INET6_UDP:
-      return HICN_TYPE_IPV6_UDP;
-    case HF_INET_ICMP:
-      return HICN_TYPE_IPV4_ICMP;
-    case HF_INET6_ICMP:
-      return HICN_TYPE_IPV6_ICMP;
-    case HF_NEW:
-      return HICN_TYPE_NEW;
-    case HF_INET_TCP_AH:
-      return HICN_TYPE_IPV4_TCP_AH;
-    case HF_INET_UDP_AH:
-      return HICN_TYPE_IPV4_UDP_AH;
-    case HF_INET6_TCP_AH:
-      return HICN_TYPE_IPV6_TCP_AH;
-    case HF_INET6_UDP_AH:
-      return HICN_TYPE_IPV6_UDP_AH;
-    case HF_INET_ICMP_AH:
-      return HICN_TYPE_IPV4_ICMP_AH;
-    case HF_INET6_ICMP_AH:
-      return HICN_TYPE_IPV6_ICMP_AH;
-    case HF_NEW_AH:
-      return HICN_TYPE_NEW_AH;
-    default:
-      break;
-    }
-  return HICN_TYPE_NONE;
-}
-
-/**
- * @brief Parse hICN header and return hICN type
- * @param [in] h - hICN header
- * @param [out] format - hICN type
- * @return hICN error code
- *
- * This function is used to wrap old API calls to new ones
- */
-hicn_type_t
-hicn_header_to_type (const hicn_header_t *h)
-{
-  hicn_format_t format;
-  hicn_packet_get_format (h, &format);
-  return hicn_format_to_type (format);
-}
-
-int
-hicn_packet_init_header (hicn_format_t format, hicn_header_t *packet)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-
-  if (hicn_type_is_none (type))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  return hicn_ops_vft[type.l1]->init_packet_header (type, &packet->protocol);
-}
-
-int
-hicn_packet_compute_checksum (hicn_format_t format, hicn_header_t *h)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->update_checksums (type, &h->protocol, 0, ~0);
-}
-
-int
-hicn_packet_compute_header_checksum (hicn_format_t format, hicn_header_t *h,
-				     u16 init_sum)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  /* payload_length == 0: ignore payload */
-  return hicn_ops_vft[type.l1]->update_checksums (type, &h->protocol, init_sum,
-						  0);
-}
-
-int
-hicn_packet_check_integrity_no_payload (hicn_format_t format, hicn_header_t *h,
-					u16 init_sum)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->verify_checksums (type, &h->protocol, init_sum,
-						  0);
-}
-
-int
-hicn_packet_get_header_length_from_format (hicn_format_t format,
-					   size_t *header_length)
-{
-  *header_length = _is_ipv4 (format) * IPV4_HDRLEN;
-  *header_length += _is_ipv6 (format) * IPV6_HDRLEN;
-  *header_length += _is_icmp (format) * ICMP_HDRLEN;
-  *header_length += _is_tcp (format) * TCP_HDRLEN;
-  *header_length += _is_udp (format) * UDP_HDRLEN;
-  *header_length += _is_cmpr (format) * NEW_HDRLEN;
-  *header_length += _is_ah (format) * AH_HDRLEN;
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_get_header_length (hicn_format_t format, const hicn_header_t *h,
-			       size_t *header_length)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_header_length (type, &h->protocol,
-						   header_length);
-}
-
-int
-hicn_packet_get_payload_length (hicn_format_t format, const hicn_header_t *h,
-				size_t *payload_length)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_payload_length (type, &h->protocol,
-						    payload_length);
-}
-
-int
-hicn_packet_set_payload_length (hicn_format_t format, hicn_header_t *h,
-				const size_t payload_length)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->set_payload_length (type, &h->protocol,
-						    payload_length);
-}
-
-int
-hicn_packet_compare (const hicn_header_t *packet1,
-		     const hicn_header_t *packet2)
-{
-  hicn_type_t type1 = hicn_header_to_type (packet1);
-  hicn_type_t type2 = hicn_header_to_type (packet2);
-
-  size_t len1, len2;
-  int rc;
-
-  if (type1.as_u32 != type2.as_u32)
-    return HICN_LIB_ERROR_UNEXPECTED;
-
-  rc = hicn_ops_vft[type1.l1]->get_length (type1, &packet1->protocol, &len1);
-  if (PREDICT_FALSE (rc < 0))
-    return HICN_LIB_ERROR_UNEXPECTED;
-
-  rc = hicn_ops_vft[type2.l1]->get_length (type2, &packet2->protocol, &len2);
-  if (PREDICT_FALSE (rc < 0))
-    return HICN_LIB_ERROR_UNEXPECTED;
-
-  if (len1 != len2)
-    return HICN_LIB_ERROR_UNEXPECTED;
-
-  return memcmp ((u8 *) packet1, (u8 *) packet2, len1);
-}
-
-int
-hicn_packet_get_name (hicn_format_t format, const hicn_header_t *h,
-		      hicn_name_t *name, u8 is_interest)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-
-  if (is_interest)
-    return hicn_ops_vft[type.l1]->get_interest_name (type, &h->protocol, name);
-  else
-    return hicn_ops_vft[type.l1]->get_data_name (type, &h->protocol, name);
-}
-
-int
-hicn_packet_set_name (hicn_format_t format, hicn_header_t *h,
-		      const hicn_name_t *name, u8 is_interest)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-
-  if (is_interest)
-    return hicn_ops_vft[type.l1]->set_interest_name (type, &h->protocol, name);
-  else
-    return hicn_ops_vft[type.l1]->set_data_name (type, &h->protocol, name);
-}
-
-int
-hicn_packet_set_payload (hicn_format_t format, hicn_header_t *h,
-			 const u8 *payload, u16 payload_length)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  size_t header_length;
-  int rc;
-
-  rc = hicn_ops_vft[type.l1]->get_header_length (type, &h->protocol,
-						 &header_length);
-  if (rc < 0)
-    return rc;
-
-  memcpy ((u8 *) h + header_length, payload, payload_length);
-
-  return hicn_ops_vft[type.l1]->set_payload_length (type, &h->protocol,
-						    payload_length);
-}
-
-int
-hicn_packet_get_payload (hicn_format_t format, const hicn_header_t *h,
-			 u8 **payload, size_t *payload_size, bool hard_copy)
-{
-  size_t header_length, payload_length;
-  int rc;
-  hicn_type_t type = hicn_format_to_type (format);
-
-  rc = hicn_ops_vft[type.l1]->get_header_length (type, &h->protocol,
-						 &header_length);
-  if (rc < 0)
-    return rc;
-
-  rc = hicn_ops_vft[type.l1]->get_payload_length (type, &h->protocol,
-						  &payload_length);
-  if (rc < 0)
-    return rc;
-
-  if (hard_copy)
-    {
-      memcpy (payload, (u8 *) h + header_length, payload_length);
-    }
-  else
-    {
-      *payload = (u8 *) h + header_length;
-    }
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_get_locator (hicn_format_t format, const hicn_header_t *h,
-			 ip_address_t *address, bool is_interest)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  if (is_interest)
-    return hicn_ops_vft[type.l1]->get_interest_locator (type, &h->protocol,
-							address);
-  else
-    return hicn_ops_vft[type.l1]->get_data_locator (type, &h->protocol,
-						    address);
-}
-
-int
-hicn_packet_set_locator (hicn_format_t format, hicn_header_t *h,
-			 const ip_address_t *address, bool is_interest)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  if (is_interest)
-    return hicn_ops_vft[type.l1]->set_interest_locator (type, &h->protocol,
-							address);
-  else
-    return hicn_ops_vft[type.l1]->set_data_locator (type, &h->protocol,
-						    address);
-}
-
-int
-hicn_packet_get_signature_size (hicn_format_t format, const hicn_header_t *h,
-				size_t *bytes)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_signature_size (type, &h->protocol, bytes);
-}
-
-int
-hicn_packet_set_signature_size (hicn_format_t format, hicn_header_t *h,
-				size_t bytes)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->set_signature_size (type, &h->protocol, bytes);
-}
-
-int
-hicn_packet_get_signature_padding (hicn_format_t format,
-				   const hicn_header_t *h, size_t *bytes)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_signature_padding (type, &h->protocol,
-						       bytes);
-}
-
-int
-hicn_packet_set_signature_padding (hicn_format_t format, hicn_header_t *h,
-				   size_t bytes)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->set_signature_padding (type, &h->protocol,
-						       bytes);
-}
-
-int
-hicn_packet_set_signature_timestamp (hicn_format_t format, hicn_header_t *h,
-				     uint64_t signature_timestamp)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->set_signature_timestamp (type, &h->protocol,
-							 signature_timestamp);
-}
-
-int
-hicn_packet_get_signature_timestamp (hicn_format_t format,
-				     const hicn_header_t *h,
-				     uint64_t *signature_timestamp)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_signature_timestamp (type, &h->protocol,
-							 signature_timestamp);
-}
-
-int
-hicn_packet_set_validation_algorithm (hicn_format_t format, hicn_header_t *h,
-				      uint8_t validation_algorithm)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->set_validation_algorithm (
-    type, &h->protocol, validation_algorithm);
-}
-
-int
-hicn_packet_get_validation_algorithm (hicn_format_t format,
-				      const hicn_header_t *h,
-				      uint8_t *validation_algorithm)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_validation_algorithm (
-    type, &h->protocol, validation_algorithm);
-}
-
-int
-hicn_packet_set_key_id (hicn_format_t format, hicn_header_t *h,
-			uint8_t *key_id)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->set_key_id (type, &h->protocol, key_id);
-}
-
-int
-hicn_packet_get_key_id (hicn_format_t format, hicn_header_t *h,
-			uint8_t **key_id, uint8_t *key_id_length)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_key_id (type, &h->protocol, key_id,
-					    key_id_length);
-}
-
-int
-hicn_packet_get_hoplimit (const hicn_header_t *h, u8 *hops)
-{
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *hops = h->v6.ip.hlim;
-      break;
-    case 4:
-      *hops = h->v4.ip.ttl;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_hoplimit (hicn_header_t *h, u8 hops)
-{
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.ip.hlim = hops;
-      break;
-    case 4:
-      h->v4.ip.ttl = hops;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_is_interest (hicn_format_t format, const hicn_header_t *h,
-			 int *ret)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->is_interest (type, &h->protocol, ret);
-}
-
-int
-hicn_packet_set_interest (hicn_format_t format, hicn_header_t *h)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->mark_packet_as_interest (type, &h->protocol);
-}
-
-int
-hicn_packet_set_data (hicn_format_t format, hicn_header_t *h)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->mark_packet_as_data (type, &h->protocol);
-}
-
-int
-hicn_packet_get_lifetime (hicn_format_t format, const hicn_header_t *h,
-			  u32 *lifetime)
-{
-  hicn_type_t type = hicn_header_to_type (h);
-  return hicn_ops_vft[type.l1]->get_lifetime (type, &h->protocol,
-					      (hicn_lifetime_t *) lifetime);
-}
-
-int
-hicn_packet_set_lifetime (hicn_format_t format, hicn_header_t *h, u32 lifetime)
-{
-  hicn_type_t type = hicn_header_to_type (h);
-  return hicn_ops_vft[type.l1]->set_lifetime (type, &h->protocol,
-					      (hicn_lifetime_t) lifetime);
-}
-
-int
-hicn_packet_get_reserved_bits (const hicn_header_t *h, u8 *reserved_bits)
-{
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *reserved_bits = (u8) (h->v6.tcp.reserved);
-      break;
-    case 4:
-      *reserved_bits = (u8) (h->v4.tcp.reserved);
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_reserved_bits (hicn_header_t *h, const u8 reserved_bits)
-{
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.reserved = reserved_bits;
-      break;
-    case 4:
-      h->v4.tcp.reserved = reserved_bits;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_get_payload_type (hicn_format_t format, const hicn_header_t *h,
-			      hicn_payload_type_t *payload_type)
-{
-  hicn_type_t type = hicn_header_to_type (h);
-  return hicn_ops_vft[type.l1]->get_payload_type (type, &h->protocol,
-						  payload_type);
-}
-
-int
-hicn_packet_set_payload_type (hicn_format_t format, hicn_header_t *h,
-			      hicn_payload_type_t payload_type)
-{
-  hicn_type_t type = hicn_header_to_type (h);
-  return hicn_ops_vft[type.l1]->set_payload_type (type, &h->protocol,
-						  payload_type);
-}
-
-int
-hicn_packet_set_syn (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags | HICN_TCP_FLAG_SYN;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags | HICN_TCP_FLAG_SYN;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_reset_syn (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags & ~HICN_TCP_FLAG_SYN;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags & ~HICN_TCP_FLAG_SYN;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_test_syn (hicn_format_t format, const hicn_header_t *h, bool *flag)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *flag = h->v6.tcp.flags & HICN_TCP_FLAG_SYN;
-      break;
-    case 4:
-      *flag = h->v4.tcp.flags & HICN_TCP_FLAG_SYN;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_ack (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags | HICN_TCP_FLAG_ACK;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags | HICN_TCP_FLAG_ACK;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_reset_ack (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags & ~HICN_TCP_FLAG_ACK;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags & ~HICN_TCP_FLAG_ACK;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_test_ack (hicn_format_t format, const hicn_header_t *h, bool *flag)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *flag = h->v6.tcp.flags & HICN_TCP_FLAG_ACK;
-      break;
-    case 4:
-      *flag = h->v4.tcp.flags & HICN_TCP_FLAG_ACK;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_rst (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags | HICN_TCP_FLAG_RST;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags | HICN_TCP_FLAG_RST;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_reset_rst (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags & ~HICN_TCP_FLAG_RST;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags & ~HICN_TCP_FLAG_RST;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_test_rst (hicn_format_t format, const hicn_header_t *h, bool *flag)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *flag = h->v6.tcp.flags & HICN_TCP_FLAG_RST;
-      break;
-    case 4:
-      *flag = h->v4.tcp.flags & HICN_TCP_FLAG_RST;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_fin (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags | HICN_TCP_FLAG_FIN;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags | HICN_TCP_FLAG_FIN;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_reset_fin (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags & ~HICN_TCP_FLAG_FIN;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags & ~HICN_TCP_FLAG_FIN;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_test_fin (hicn_format_t format, const hicn_header_t *h, bool *flag)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *flag = h->v6.tcp.flags & HICN_TCP_FLAG_FIN;
-      break;
-    case 4:
-      *flag = h->v4.tcp.flags & HICN_TCP_FLAG_FIN;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_ece (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags | HICN_TCP_FLAG_ECE;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags | HICN_TCP_FLAG_ECE;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_reset_ece (hicn_format_t format, hicn_header_t *h)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.flags = h->v6.tcp.flags & ~HICN_TCP_FLAG_ECE;
-      break;
-    case 4:
-      h->v4.tcp.flags = h->v4.tcp.flags & ~HICN_TCP_FLAG_ECE;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_test_ece (hicn_format_t format, const hicn_header_t *h, bool *flag)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *flag = h->v6.tcp.flags & HICN_TCP_FLAG_ECE;
-      break;
-    case 4:
-      *flag = h->v4.tcp.flags & HICN_TCP_FLAG_ECE;
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_src_port (hicn_format_t format, hicn_header_t *h, u16 src_port)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.sport = htons (src_port);
-      break;
-    case 4:
-      h->v4.tcp.sport = htons (src_port);
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_get_src_port (hicn_format_t format, const hicn_header_t *h,
-			  u16 *src_port)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *src_port = ntohs (h->v6.tcp.sport);
-      break;
-    case 4:
-      *src_port = ntohs (h->v4.tcp.sport);
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_set_dst_port (hicn_format_t format, hicn_header_t *h, u16 dst_port)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      h->v6.tcp.dport = htons (dst_port);
-      break;
-    case 4:
-      h->v4.tcp.dport = htons (dst_port);
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_get_dst_port (hicn_format_t format, const hicn_header_t *h,
-			  u16 *dst_port)
-{
-  if (!_is_tcp (format))
-    {
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-
-  switch (HICN_IP_VERSION (h))
-    {
-    case 6:
-      *dst_port = ntohs (h->v6.tcp.dport);
-      break;
-    case 4:
-      *dst_port = ntohs (h->v4.tcp.dport);
-      break;
-    default:
-      return HICN_LIB_ERROR_UNEXPECTED;
-    }
-  return HICN_LIB_ERROR_NONE;
-}
-
-int
-hicn_packet_copy_header (hicn_format_t format, const hicn_header_t *packet,
-			 hicn_header_t *destination, bool copy_ah)
-{
-  size_t header_length = _is_ipv4 (format) * IPV4_HDRLEN;
-  header_length += _is_ipv6 (format) * IPV6_HDRLEN;
-  header_length += _is_icmp (format) * ICMP_HDRLEN;
-  header_length += _is_tcp (format) * TCP_HDRLEN;
-  header_length += _is_ah (format) * copy_ah * AH_HDRLEN;
-
-  memcpy (destination, packet, header_length);
-
-  return HICN_LIB_ERROR_NONE;
-}
-
-#define _INTEREST 1
-#define _DATA	  0
-
-/* Interest */
-
-int
-hicn_interest_get_name (hicn_format_t format, const hicn_header_t *interest,
-			hicn_name_t *name)
-{
-  return hicn_packet_get_name (format, interest, name, _INTEREST);
-}
-
-int
-hicn_interest_set_name (hicn_format_t format, hicn_header_t *interest,
-			const hicn_name_t *name)
-{
-  return hicn_packet_set_name (format, interest, name, _INTEREST);
-}
-
-int
-hicn_interest_get_locator (hicn_format_t format, const hicn_header_t *interest,
-			   ip_address_t *address)
-{
-  return hicn_packet_get_locator (format, interest, address, _INTEREST);
-}
-
-int
-hicn_interest_set_locator (hicn_format_t format, hicn_header_t *interest,
-			   const ip_address_t *address)
-{
-  return hicn_packet_set_locator (format, interest, address, _INTEREST);
-}
-
-int
-hicn_interest_compare (const hicn_header_t *interest_1,
-		       const hicn_header_t *interest_2)
-{
-  return hicn_packet_compare (interest_1, interest_2);
-}
-
-int
-hicn_interest_get_lifetime (const hicn_header_t *interest, u32 *lifetime)
-{
-  hicn_format_t format;
-  int rc = hicn_packet_get_format (interest, &format);
-
-  if (rc)
-    return rc;
-
-  return hicn_packet_get_lifetime (format, interest, lifetime);
-}
-
-int
-hicn_interest_set_lifetime (hicn_header_t *interest, u32 lifetime)
-{
-  hicn_format_t format;
-  int rc = hicn_packet_get_format (interest, &format);
-
-  if (rc)
-    return rc;
-
-  return hicn_packet_set_lifetime (format, interest, lifetime);
-}
-
-int
-hicn_interest_get_header_length (hicn_format_t format,
-				 const hicn_header_t *interest,
-				 size_t *header_length)
-{
-  return hicn_packet_get_header_length (format, interest, header_length);
-}
-
-int
-hicn_interest_get_payload_length (hicn_format_t format,
-				  const hicn_header_t *interest,
-				  size_t *payload_length)
-{
-  return hicn_packet_get_payload_length (format, interest, payload_length);
-}
-
-int
-hicn_interest_get_payload (hicn_format_t format, const hicn_header_t *interest,
-			   u8 **payload, size_t *payload_size, bool hard_copy)
-{
-  return hicn_packet_get_payload (format, interest, payload, payload_size,
-				  hard_copy);
-}
-
-int
-hicn_interest_set_payload (hicn_format_t format, hicn_header_t *interest,
-			   const u8 *payload, size_t payload_length)
-{
-  return hicn_packet_set_payload (format, interest, payload,
-				  (u16) payload_length);
-}
-
-int
-hicn_interest_reset_for_hash (hicn_format_t format, hicn_header_t *packet)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->reset_interest_for_hash (type,
-							 &packet->protocol);
-}
-
-/* Data */
-
-int
-hicn_data_get_name (hicn_format_t format, const hicn_header_t *data,
-		    hicn_name_t *name)
-{
-  return hicn_packet_get_name (format, data, name, _DATA);
-}
-
-int
-hicn_data_set_name (hicn_format_t format, hicn_header_t *data,
-		    const hicn_name_t *name)
-{
-  return hicn_packet_set_name (format, data, name, _DATA);
-}
-
-int
-hicn_data_get_locator (hicn_format_t format, const hicn_header_t *data,
-		       ip_address_t *address)
-{
-  return hicn_packet_get_locator (format, data, address, _DATA);
-}
-
-int
-hicn_data_set_locator (hicn_format_t format, hicn_header_t *data,
-		       const ip_address_t *address)
-{
-  return hicn_packet_set_locator (format, data, address, _DATA);
-}
-
-int
-hicn_data_compare (const hicn_header_t *data_1, const hicn_header_t *data_2)
-{
-  return hicn_packet_compare (data_1, data_2);
-}
-
-int
-hicn_data_get_expiry_time (const hicn_header_t *data, u32 *expiry_time)
-{
-  hicn_format_t format;
-  int rc = hicn_packet_get_format (data, &format);
-
-  if (rc)
-    return rc;
-
-  return hicn_packet_get_lifetime (format, data, expiry_time);
-}
-
-int
-hicn_data_set_expiry_time (hicn_header_t *data, u32 expiry_time)
-{
-  hicn_format_t format;
-  int rc = hicn_packet_get_format (data, &format);
-
-  if (rc)
-    return rc;
-
-  return hicn_packet_set_lifetime (format, data,
-				   (hicn_lifetime_t) expiry_time);
-}
-
-int
-hicn_data_get_header_length (hicn_format_t format, hicn_header_t *data,
-			     size_t *header_length)
-{
-  return hicn_packet_get_header_length (format, data, header_length);
-}
-
-int
-hicn_data_get_payload_length (hicn_format_t format, const hicn_header_t *data,
-			      size_t *payload_length)
-{
-  return hicn_packet_get_payload_length (format, data, payload_length);
-}
-
-int
-hicn_data_get_path_label (const hicn_header_t *data, u32 *path_label)
-{
-  hicn_type_t type = hicn_header_to_type (data);
-  return hicn_ops_vft[type.l1]->get_data_pathlabel (type, &data->protocol,
-						    path_label);
-}
-
-int
-hicn_data_set_path_label (hicn_header_t *data, u32 path_label)
-{
-  hicn_type_t type = hicn_header_to_type (data);
-  return hicn_ops_vft[type.l1]->set_data_pathlabel (type, &data->protocol,
-						    path_label);
-}
-
-int
-hicn_data_set_payload (hicn_format_t format, hicn_header_t *data,
-		       const u8 *payload, size_t payload_length)
-{
-  return hicn_packet_set_payload (format, data, payload, (u16) payload_length);
-}
-
-int
-hicn_data_get_payload (hicn_format_t format, const hicn_header_t *data,
-		       u8 **payload, size_t *payload_size, bool hard_copy)
-{
-  return hicn_packet_get_payload (format, data, payload, payload_size,
-				  hard_copy);
-}
-
-int
-hicn_data_reset_for_hash (hicn_format_t format, hicn_header_t *packet)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->reset_data_for_hash (type, &packet->protocol);
-}
-
-int
-hicn_data_is_last (hicn_format_t format, hicn_header_t *h, int *is_last)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->is_last_data (type, &h->protocol, is_last);
-}
-
-int
-hicn_data_set_last (hicn_format_t format, hicn_header_t *h)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->set_last_data (type, &h->protocol);
-}
-
-int
-hicn_packet_get_signature (hicn_format_t format, hicn_header_t *packet,
-			   uint8_t **sign_buf)
-{
-  hicn_type_t type = hicn_format_to_type (format);
-  return hicn_ops_vft[type.l1]->get_signature (type, &packet->protocol,
-					       sign_buf);
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */