lisp: move cp tests to unittest

Type: refactor

Also reformats and fixes some of the tests.

Change-Id: I074c677fd9b28e192f72a2db32f6f2dbda9a314f
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 1431 insertions, 0 deletions

diff --git a/src/plugins/unittest/lisp_cp_test.c b/src/plugins/unittest/lisp_cp_test.c
new file mode 100644
index 00000000000..c6405c2ca33
--- /dev/null
+++ b/src/plugins/unittest/lisp_cp_test.c
@@ -0,0 +1,1431 @@
+/*
+ * Copyright (c) 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 <vnet/vnet.h>
+#include <vppinfra/error.h>
+#include <vnet/lisp-cp/lisp_cp_messages.h>
+#include <vnet/lisp-cp/control.h>
+#include <vnet/lisp-cp/lisp_msg_serdes.h>
+#include <vlibapi/api.h>
+#include <vnet/lisp-cp/packets.h>
+
+#define _assert(e)                    			\
+  error = CLIB_ERROR_ASSERT (e);      			\
+  if (error)                 		         	\
+    {							\
+      fformat(stderr, "FAIL: line %d \n\n", __LINE__);	\
+      goto done;					\
+    }
+
+static void
+print_chunk (u8 * b, int *offset, int c, char *des)
+{
+  int i, n = offset[0] + c;;
+  for (i = offset[0]; i < n; i++)
+    {
+      printf ("0x%02x, ", b[i]);
+    }
+  printf (" // %s\n", des);
+  *offset += c;
+}
+
+void
+print_map_request (map_request_hdr_t * h)
+{
+#define pchunk(_count, _desc) \
+  print_chunk((u8 *)h, &offset, _count, _desc)
+
+  int offset = 0;
+
+  pchunk (4, "data");
+  pchunk (8, "Nonce");
+  pchunk (2, "Source-EID-AFI");
+  pchunk (4, "Source EID Address");
+  pchunk (2, "ITR-RLOC-AFI 1");
+  pchunk (4, "ITR-RLOC Address 1");
+  pchunk (2, "ITR-RLOC-AFI 2");
+  pchunk (16, "ITR-RLOC Address 2");
+  pchunk (1, "REC: reserved");
+  pchunk (1, "REC: EID mask-len");
+  pchunk (2, "REC: EID-prefix-AFI");
+  pchunk (4, "REC: EID-prefix");
+  printf ("\n");
+}
+
+static clib_error_t *
+test_lisp_msg_push_ecm ()
+{
+  vlib_main_t *vm = vlib_get_main ();
+  clib_error_t *error = 0;
+  gid_address_t la, ra;
+  vlib_buffer_t *b = 0;
+  u32 buff_len = 900;
+  int lp = 0x15, rp = 0x14;
+
+  b = clib_mem_alloc (buff_len);
+  clib_memset ((u8 *) b, 0, buff_len);
+  b->current_length = buff_len;
+  b->current_data = sizeof (udp_header_t) + sizeof (ip4_header_t) +
+    sizeof (ecm_hdr_t) + 1;
+
+  la.type = GID_ADDR_IP_PREFIX;
+  la.ippref.addr.ip.v4.as_u32 = 0xa1b2c3d4;
+  la.ippref.addr.version = IP4;
+
+  ra.type = GID_ADDR_IP_PREFIX;
+  ra.ippref.addr.ip.v4.as_u32 = 0x90817263;
+  ra.ippref.addr.version = IP4;
+
+  ecm_hdr_t *lh = lisp_msg_push_ecm (vm, b, lp, rp, &la, &ra);
+
+  u8 expected_ecm_hdr[] = {
+    0x80, 0x00, 0x00, 0x00
+  };
+  _assert (0 == memcmp (expected_ecm_hdr, lh, sizeof (expected_ecm_hdr)));
+
+  ip4_header_t *ih = (ip4_header_t *) (lh + 1);
+  /* clear ip checksum */
+  clib_memset ((u8 *) ih + 10, 0, 2);
+
+  /* *INDENT-OFF* */
+  u8 expected_ip4_hdr[] = {
+    0x45,                   /* version; IHL */
+    0x00,                   /* services */
+    0x03, 0xa0,             /* total length */
+    0x00, 0x00,             /* identification */
+    0x40, 0x00,             /* flags; fragment offset*/
+    0xff,                   /* TTL */
+    0x11,                   /* protocol */
+    0x00, 0x00,             /* header checksum */
+    0xd4, 0xc3, 0xb2, 0xa1, /* src IP */
+    0x63, 0x72, 0x81, 0x90, /* dst IP */
+  };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (ih, expected_ip4_hdr, sizeof (expected_ip4_hdr)));
+
+  udp_header_t *uh = (udp_header_t *) (ih + 1);
+  /* clear udp checksum */
+  clib_memset ((u8 *) uh + 6, 0, 2);
+
+  /* *INDENT-OFF* */
+  u8 expected_udp_hdr[] = {
+    0x00, 0x15, /* src port */
+    0x00, 0x14, /* dst port */
+    0x03, 0x8c, /* length */
+    0x00, 0x00, /* checksum */
+  };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (uh, expected_udp_hdr, sizeof (expected_udp_hdr)));
+
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+static clib_error_t *
+test_lisp_msg_parse_mapping_record ()
+{
+  clib_error_t *error = 0;
+  locator_t probed;
+  locator_t *locs = 0;
+  vlib_buffer_t *b = 0;
+  gid_address_t eid;
+  u32 buff_len = 500;
+
+  b = clib_mem_alloc (buff_len);
+  clib_memset ((u8 *) b, 0, buff_len);
+
+  /* *INDENT-OFF* */
+  u8 map_reply_records[] = {
+    /* 1. record */
+    0x01, 0x02, 0x03, 0x04, /* record TTL */
+    0x01,                   /* locator count */
+    0x00, 0x00, 0x00,       /* eid-mask-len; ... */
+    0x00, 0x00,             /* reserved; map-version num */
+    0x00, 0x01,             /* EID-Prefix-AFI */
+    0x33, 0x44, 0x55, 0x66, /* eid-prefix */
+    /* loc */
+    0x0a,                   /* prority */
+    0x0b,                   /* weight */
+    0x0c,                   /* m-prority */
+    0x0d,                   /* m-weight */
+    0x00, 0x00,             /* unused flags */
+    0x00, 0x01,             /* Loc-AFI */
+    0xaa, 0xbb, 0xcc, 0xdd, /* Loator */
+  };
+  /* *INDENT-ON* */
+
+  b->current_length = buff_len;
+  clib_memcpy (b->data, map_reply_records, sizeof (map_reply_records));
+
+  lisp_msg_parse_mapping_record (b, &eid, &locs, &probed);
+  _assert (vec_len (locs) == 1);
+  _assert (eid.ippref.addr.ip.v4.as_u32 == 0x66554433);
+  _assert (locs[0].local == 0);
+  _assert (locs[0].address.ippref.addr.ip.v4.as_u32 == 0xddccbbaa);
+  _assert (locs[0].address.type == GID_ADDR_IP_PREFIX);
+  _assert (locs[0].priority == 0xa);
+  _assert (locs[0].weight == 0xb);
+  _assert (locs[0].mpriority == 0xc);
+  _assert (locs[0].mweight == 0xd);
+
+done:
+  clib_mem_free (b);
+  if (locs)
+    vec_free (locs);
+  return error;
+}
+
+static map_request_hdr_t *
+build_map_request (lisp_cp_main_t * lcm, vlib_buffer_t * b,
+		   gid_address_t * rlocs)
+{
+  gid_address_t _seid, *seid = &_seid;
+  gid_address_t _deid, *deid = &_deid;
+  u8 is_smr_invoked = 1;
+  u8 rloc_probe_set = 0;
+  u64 nonce = 0;
+  map_request_hdr_t *h = 0;
+  clib_memset (deid, 0, sizeof (deid[0]));
+  clib_memset (seid, 0, sizeof (seid[0]));
+
+  gid_address_type (seid) = GID_ADDR_IP_PREFIX;
+  ip_address_t *ip_addr = &gid_address_ip (seid);
+  ip_addr_v4 (ip_addr).as_u32 = 0x12345678;
+  seid->ippref.addr.version = IP4;
+
+  gid_address_type (deid) = GID_ADDR_IP_PREFIX;
+  ip_address_t *ip_addr2 = &gid_address_ip (deid);
+  ip_addr_v4 (ip_addr2).as_u32 = 0x9abcdef0;
+  deid->ippref.addr.version = IP4;
+  gid_address_ippref_len (deid) = 24;
+
+  h = lisp_msg_put_mreq (lcm, b, seid, deid, rlocs,
+			 is_smr_invoked, rloc_probe_set, &nonce);
+  vec_free (rlocs);
+  return h;
+}
+
+static void
+generate_rlocs (gid_address_t ** rlocs, u32 * count)
+{
+  gid_address_t gid_addr_data, *gid_addr = &gid_addr_data;
+  clib_memset (gid_addr, 0, sizeof (gid_addr[0]));
+  ip_address_t *addr = &gid_address_ip (gid_addr);
+
+  gid_address_type (gid_addr) = GID_ADDR_IP_PREFIX;
+
+  ip_addr_version (addr) = IP4;
+  ip_addr_v4 (addr).data_u32 = 0x10203040;
+  vec_add1 (rlocs[0], gid_addr[0]);
+
+  ip_addr_v6 (addr).as_u32[0] = 0xffeeddcc;
+  ip_addr_v6 (addr).as_u32[1] = 0xbbaa9988;
+  ip_addr_v6 (addr).as_u32[2] = 0x77665544;
+  ip_addr_v6 (addr).as_u32[3] = 0x33221100;
+  ip_addr_version (addr) = IP6;
+  vec_add1 (rlocs[0], gid_addr[0]);
+}
+
+static clib_error_t *
+test_lisp_msg_parse ()
+{
+  gid_address_t eid;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  map_request_hdr_t *h;
+  gid_address_t gid;
+  clib_error_t *error = 0;
+  vlib_buffer_t *b;
+  gid_address_t *rlocs_decode = 0, *rlocs = 0;
+  u32 rloc_count_parse = 0;
+
+  u8 *data = clib_mem_alloc (500);
+  clib_memset (data, 0, 500);
+  b = (vlib_buffer_t *) data;
+
+  generate_rlocs (&rlocs_decode, &rloc_count_parse);
+  h = build_map_request (lcm, b, rlocs_decode);
+
+  vlib_buffer_pull (b, sizeof (*h));
+  u32 len = lisp_msg_parse_addr (b, &gid);
+  _assert (len == 2 + 4
+	   /* Source-EID-AFI field lenght + IPv4 address length */ );
+  _assert (gid.ippref.addr.ip.v4.as_u32 == 0x12345678);
+  _assert (gid.ippref.addr.version == IP4);
+
+  u8 rloc_count = MREQ_ITR_RLOC_COUNT (h) + 1;
+  lisp_msg_parse_itr_rlocs (b, &rlocs, rloc_count);
+
+  _assert (vec_len (rlocs) == 2);
+  _assert (rlocs[0].ippref.addr.ip.v4.as_u32 == 0x10203040);
+  _assert (rlocs[0].ippref.addr.version == IP4);
+
+  _assert (rlocs[1].ippref.addr.ip.v6.as_u32[0] == 0xffeeddcc);
+  _assert (rlocs[1].ippref.addr.ip.v6.as_u32[1] == 0xbbaa9988);
+  _assert (rlocs[1].ippref.addr.ip.v6.as_u32[2] == 0x77665544);
+  _assert (rlocs[1].ippref.addr.ip.v6.as_u32[3] == 0x33221100);
+  _assert (rlocs[1].ippref.addr.version == IP6);
+
+  lisp_msg_parse_eid_rec (b, &eid);
+  _assert (eid.ippref.addr.ip.v4.as_u32 == 0x9abcdef0);
+  _assert (eid.ippref.addr.version == IP4);
+  _assert (eid.ippref.len == 24);
+
+done:
+  clib_mem_free (data);
+  if (rlocs)
+    vec_free (rlocs);
+  return error;
+}
+
+static clib_error_t *
+test_lisp_msg_put_mreq_with_lcaf ()
+{
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  clib_error_t *error = 0;
+  map_request_hdr_t *h = 0;
+  gid_address_t *rlocs = 0;
+
+  ip_prefix_t ippref;
+  ip_prefix_version (&ippref) = IP4;
+  ip4_address_t *ip = &ip_prefix_v4 (&ippref);
+  ip->as_u32 = 0x11223344;
+
+  gid_address_t g = {
+    .type = GID_ADDR_IP_PREFIX,
+    .ippref = ippref,
+    .vni = 0x90919293,
+    .vni_mask = 0x17
+  };
+  vec_add1 (rlocs, g);
+
+  u8 *data = clib_mem_alloc (500);
+  clib_memset (data, 0, 500);
+
+  h = build_map_request (lcm, (vlib_buffer_t *) data, rlocs);
+
+  /* clear Nonce to simplify comparison */
+  clib_memset ((u8 *) h + 4, 0, 8);
+
+  /* *INDENT-OFF* */
+  u8 expected_data[] =
+    {
+      0x10, 0x40, 0x00, 0x01, /* type; flags; IRC; REC count */
+      0x00, 0x00, 0x00, 0x00,
+      0x00, 0x00, 0x00, 0x00, /* nonce */
+      0x00, 0x01,             /* Source-EID-AFI */
+      0x78, 0x56, 0x34, 0x12, /* Source EID Address */
+
+      /* RLOCs */
+      0x40, 0x03,             /* AFI = LCAF*/
+      /* LCAF header*/
+      0x00, 0x00,             /* reserved1, flags */
+      0x02,                   /* type = Instance ID */
+      0x17,                   /* IID mask-len */
+      0x00, 0x0a,             /* lenght */
+      0x90, 0x91, 0x92, 0x93, /* IID / VNI */
+
+      0x00, 0x01,             /* AFI = ipv4 */
+      0x44, 0x33, 0x22, 0x11, /* ITR-RLOC Address 1 */
+
+      /* record */
+      0x00,                   /* reserved */
+      0x18,                   /* EID mask-len */
+      0x00, 0x01,             /* EID-prefix-AFI */
+      0xf0, 0xde, 0xbc, 0x9a, /* EID-prefix */
+    };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (expected_data, (u8 *) h, sizeof (expected_data)));
+done:
+  clib_mem_free (data);
+  return error;
+}
+
+static clib_error_t *
+test_lisp_msg_put_mreq ()
+{
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  clib_error_t *error = 0;
+  map_request_hdr_t *h;
+  gid_address_t *rlocs = 0;
+  u32 rloc_count = 0;
+
+  u8 *data = clib_mem_alloc (500);
+  clib_memset (data, 0, 500);
+
+  generate_rlocs (&rlocs, &rloc_count);
+  h = build_map_request (lcm, (vlib_buffer_t *) data, rlocs);
+
+  /* clear Nonce to simplify comparison */
+  clib_memset ((u8 *) h + 4, 0, 8);
+
+  print_map_request (h);
+
+  /* *INDENT-OFF* */
+  u8 expected_data[50] = {
+    0x10, 0x40, 0x01, 0x01, /* type; flags; IRC; REC count */
+    0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, /* nonce */
+    0x00, 0x01,             /* Source-EID-AFI */
+    0x78, 0x56, 0x34, 0x12, /* Source EID Address */
+
+    /* RLOCs */
+    0x00, 0x01,             /* ITR-RLOC-AFI 1 */
+    0x40, 0x30, 0x20, 0x10, /* ITR-RLOC Address 1 */
+    0x00, 0x02,             /* ITR-RLOC-AFI 2 */
+    0xcc, 0xdd, 0xee, 0xff,
+    0x88, 0x99, 0xaa, 0xbb,
+    0x44, 0x55, 0x66, 0x77,
+    0x00, 0x11, 0x22, 0x33, /* ITR-RLOC Address 2 */
+
+    /* record */
+    0x00,                   /* reserved */
+    0x18,                   /* EID mask-len */
+    0x00, 0x01,             /* EID-prefix-AFI */
+    0xf0, 0xde, 0xbc, 0x9a, /* EID-prefix */
+  };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (expected_data, (u8 *) h, sizeof (expected_data)));
+
+done:
+  clib_mem_free (data);
+  return error;
+}
+
+/* generate a vector of eid records */
+static mapping_t *
+build_test_map_records ()
+{
+  mapping_t *records = 0;
+
+  /* *INDENT-OFF* */
+  mapping_t r = {
+    .ttl = MAP_REGISTER_DEFAULT_TTL,
+    .eid = {
+      .type = GID_ADDR_MAC,
+      .mac = {1, 2, 3, 4, 5, 6},
+      .vni = 0x0
+    }
+  };
+
+  locator_t loc = {
+    .weight = 1,
+    .priority = 2,
+    .local = 1,
+    .address = {
+      .type = GID_ADDR_IP_PREFIX,
+      .ippref = {
+        .addr = {
+          .ip.v4.as_u32 = 0x99887766,
+          .version = IP4
+        }
+      }
+    }
+  };
+  /* *INDENT-ON* */
+
+  vec_add1 (r.locators, loc);
+  vec_add1 (records, r);
+
+  return records;
+}
+
+static void
+free_test_map_records (mapping_t * maps)
+{
+  mapping_t *map;
+  vec_foreach (map, maps)
+  {
+    vec_free (map->locators);
+  }
+  vec_free (maps);
+}
+
+static clib_error_t *
+test_lisp_map_register ()
+{
+  vlib_buffer_t *b;
+  clib_error_t *error = 0;
+  u64 nonce;
+  u32 msg_len = 0;
+  mapping_t *records = build_test_map_records ();
+
+  u8 *data = clib_mem_alloc (500);
+  clib_memset (data, 0, 500);
+  b = (vlib_buffer_t *) data;
+
+  lisp_msg_put_map_register (b, records, 1 /* want map notify */ ,
+			     20 /* length of HMAC_SHA_1_96 */ ,
+			     &nonce, &msg_len);
+  free_test_map_records (records);
+
+  /* clear Nonce to simplify comparison */
+  clib_memset ((u8 *) b->data + 4, 0, 8);
+
+  /* clear authentication data */
+  clib_memset ((u8 *) b->data + 16, 0, 20);
+
+  /* *INDENT-OFF* */
+  u8 expected_data[] = {
+    0x30, 0x00, 0x01, 0x01, /* type; rsvd; want notify; REC count */
+    0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, /* nonce */
+    0x00, 0x00, 0x00, 0x00, /* key id, auth data length:
+                              both are zeroes because those are set in another
+                              function (see auth_data_len_by_key_id())*/
+    0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, /* auth data */
+
+    /* first record */
+    /* 0x00, 0x00, 0x03, 0x84, */ /* default ttl (15 minues) */
+    0x00, 0x01, 0x51, 0x80, /* default ttl (24h = 86400s) */
+    0x01, 0x00, 0x00, 0x00, /* loc count, eid len, ACT, A */
+    0x00, 0x00, 0x40, 0x05, /* rsvd, map ver num, AFI = MAC */
+    0x01, 0x02, 0x03, 0x04,
+    0x05, 0x06,             /* MAC EID */
+
+    /* locator 1 */
+    0x02, 0x01, 0x00, 0x00, /* prio, weight, mprio, mweight */
+    0x00, 0x04, 0x00, 0x01, /* flags, AFI = ipv4 */
+    0x66, 0x77, 0x88, 0x99, /* ipv4 locator address */
+  };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (expected_data, b->data, sizeof (expected_data)));
+done:
+  clib_mem_free (data);
+  return error;
+}
+
+static vlib_buffer_t *
+create_buffer (u8 * data, u32 data_len)
+{
+  vlib_buffer_t *b;
+
+  u8 *buf_data = clib_mem_alloc (500);
+  clib_memset (buf_data, 0, 500);
+  b = (vlib_buffer_t *) buf_data;
+
+  u8 *p = vlib_buffer_put_uninit (b, data_len);
+  clib_memcpy (p, data, data_len);
+
+  return b;
+}
+
+static clib_error_t *
+test_lisp_parse_map_reply ()
+{
+  clib_error_t *error = 0;
+
+  /* *INDENT-OFF* */
+  u8 map_reply_data[] =
+    {
+      0x00, 0x00, 0x00, 0x01, /* type; rsvd; mapping count */
+      0x00, 0x00, 0x00, 0x00,
+    };
+  /* *INDENT-ON* */
+
+  vlib_buffer_t *b = create_buffer (map_reply_data, sizeof (map_reply_data));
+  map_records_arg_t *mrecs = parse_map_reply (b);
+  _assert (0 == mrecs);
+  clib_mem_free (b);
+
+  /* *INDENT-OFF* */
+  u8 map_reply_data2[] =
+    {
+      0x00, 0x00, 0x00, 0x01, /* type; rsvd */
+      0x00, 0x00, 0x00, 0x00,
+      0x00, 0x00, 0x00, 0x00, /* nonce */
+
+      /* 1. record  - incomplete */
+      0x01, 0x02, 0x03, 0x04, /* record TTL */
+      0x01,                   /* locator count */
+    };
+  /* *INDENT-ON* */
+
+  b = create_buffer (map_reply_data2, sizeof (map_reply_data2));
+  mrecs = parse_map_reply (b);
+  _assert (0 == mrecs);
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+static clib_error_t *
+test_lisp_parse_lcaf ()
+{
+  int i;
+  clib_error_t *error = 0;
+  gid_address_t eid;
+  locator_t *locs = 0;
+  locator_t probed;
+  vlib_buffer_t *b = 0;
+  u32 buff_len = 500;
+
+  b = clib_mem_alloc (buff_len);
+  clib_memset ((u8 *) b, 0, buff_len);
+
+  /* *INDENT-OFF* */
+  u8 map_reply_records[] =
+    {
+      /* 1. record */
+      0x01, 0x02, 0x03, 0x04, /* record TTL */
+      0x03,                   /* locator count */
+      0x00, 0x00, 0x00,       /* eid-mask-len; ... */
+      0x00, 0x00,             /* reserved; map-version num */
+      0x00, 0x01,             /* EID-Prefix-AFI */
+      0x33, 0x44, 0x55, 0x66, /* eid-prefix */
+
+      /* 1st locator */
+      0x0a,                   /* prority */
+      0x0b,                   /* weight */
+      0x0c,                   /* m-prority */
+      0x0d,                   /* m-weight */
+      0x00, 0x00,             /* unused flags */
+      0x40, 0x03,             /* Loc-AFI = LCAF*/
+
+      /* LCAF header*/
+      0x00, 0x00,             /* reserved1, flags */
+      0x02,                   /* type = Instance ID */
+      0x18,                   /* IID mask-len */
+      0x00, 0x0a,             /* lenght */
+      /* LCAF Instance ID */
+      0x00, 0x00, 0x00, 0x09, /* iid */
+      0x00, 0x01,             /* AFI = ipv4 */
+      0x10, 0xbb, 0xcc, 0xdd, /* ipv4 loator address */
+
+      /* 2nd locator */
+      0x07,                   /* prority */
+      0x06,                   /* weight */
+      0x05,                   /* m-prority */
+      0x04,                   /* m-weight */
+      0x00, 0x00,             /* unused flags */
+      0x40, 0x03,             /* Loc-AFI = LCAF*/
+
+      /* LCAF header*/
+      0x00, 0x00,             /* reserved1, flags */
+      0x02,                   /* type = Instance ID */
+      0x18,                   /* IID mask-len */
+      0x00, 0x16,             /* iid length + next AFI lenght */
+      /* LCAF Instance ID */
+      0x22, 0x44, 0x66, 0x88, /* iid */
+      0x00, 0x02,             /* AFI = ipv6 */
+      0xcc, 0xdd, 0xee, 0xff,
+      0x88, 0x99, 0xaa, 0xbb,
+      0x44, 0x55, 0x66, 0x77,
+      0x00, 0x11, 0x22, 0x33, /* ipv6 locator address */
+
+      /* 3rd locator */
+      0x0a,                   /* prority */
+      0x0b,                   /* weight */
+      0x0c,                   /* m-prority */
+      0x0d,                   /* m-weight */
+      0x00, 0x00,             /* unused flags */
+      0x00, 0x01,             /* Loc-AFI */
+      0xaa, 0xbb, 0xcc, 0xdd, /* Loator */
+    };
+  /* *INDENT-ON* */
+
+  b->current_length = buff_len;
+  memcpy (b->data, map_reply_records, sizeof (map_reply_records));
+
+  lisp_msg_parse_mapping_record (b, &eid, &locs, &probed);
+  _assert (vec_len (locs) == 3);
+  _assert (eid.ippref.addr.ip.v4.as_u32 == 0x66554433);
+
+  /* check 1st locator - an LCAF with ipv4 */
+  _assert (locs[0].local == 0);
+  _assert (locs[0].priority == 0xa);
+  _assert (locs[0].weight == 0xb);
+  _assert (locs[0].mpriority == 0xc);
+  _assert (locs[0].mweight == 0xd);
+
+  _assert (gid_address_type (&locs[0].address) == GID_ADDR_IP_PREFIX);
+  _assert (gid_address_vni (&locs[0].address) == 0x09);
+  ip_prefix_t *ip_pref = &gid_address_ippref (&locs[0].address);
+  _assert (IP4 == ip_prefix_version (ip_pref));
+
+  /* 2nd locator - LCAF entry with ipv6 address */
+  _assert (locs[1].local == 0);
+  _assert (locs[1].priority == 0x7);
+  _assert (locs[1].weight == 0x6);
+  _assert (locs[1].mpriority == 0x5);
+  _assert (locs[1].mweight == 0x4);
+
+  _assert (gid_address_type (&locs[1].address) == GID_ADDR_IP_PREFIX);
+  _assert (0x22446688 == gid_address_vni (&locs[1].address));
+  ip_pref = &gid_address_ippref (&locs[1].address);
+  _assert (IP6 == ip_prefix_version (ip_pref));
+
+  /* 3rd locator - simple ipv4 address */
+  _assert (gid_address_type (&locs[2].address) == GID_ADDR_IP_PREFIX);
+done:
+  clib_mem_free (b);
+
+  for (i = 0; i < 3; i++)
+    locator_free (&locs[i]);
+  vec_free (locs);
+  return error;
+}
+
+#define foreach_test_case                 \
+  _(lisp_msg_put_mreq)                    \
+  _(lisp_msg_put_mreq_with_lcaf)          \
+  _(lisp_msg_push_ecm)                    \
+  _(lisp_msg_parse)                       \
+  _(lisp_msg_parse_mapping_record)        \
+  _(lisp_parse_map_reply)                 \
+  _(lisp_parse_lcaf)                      \
+  _(lisp_map_register)
+
+static int
+lisp_cp_serdes_tests (vlib_main_t * vm, unformat_input_t * input)
+{
+  clib_error_t *error;
+
+#define _(_test_name)                   		\
+  error = test_ ## _test_name ();       		\
+  if (error)                            		\
+    {                                   		\
+      fformat (stderr, "FAIL: test_" #_test_name "\n");	\
+      return -1;                        		\
+    }							\
+  else							\
+      fformat (stderr, "PASS: test_" #_test_name "\n");	\
+
+  foreach_test_case
+#undef _
+    return 0;
+}
+
+static clib_error_t *
+test_locator_type (void)
+{
+  clib_error_t *error = 0;
+  gid_address_t _gid_addr, *gid = &_gid_addr;
+  ip_prefix_t *ippref;
+  gid_address_type (gid) = GID_ADDR_IP_PREFIX;
+  gid_address_ippref_len (gid) = 24;
+  ippref = &gid_address_ippref (gid);
+  ip_prefix_version (ippref) = IP4;
+  ip_prefix_len (ippref) = 0;
+  ip4_address_t *ip4 = &ip_prefix_v4 (ippref);
+  ip4->as_u32 = 0x20304050;
+
+  /* local locator */
+  locator_t loc1, loc2 = {
+    .local = 1,
+    .state = 2,
+    .sw_if_index = 8,
+    .priority = 3,
+    .weight = 100,
+    .mpriority = 4,
+    .mweight = 101
+  };
+  locator_copy (&loc1, &loc2);
+  _assert (0 == locator_cmp (&loc1, &loc2));
+
+  /* remote locator */
+  loc2.local = 0;
+
+  ip_prefix_t nested_ippref;
+  ip_prefix_version (&nested_ippref) = IP4;
+  ip_prefix_len (&nested_ippref) = 0;
+  ip4 = &ip_prefix_v4 (&nested_ippref);
+  ip4->as_u32 = 0x33882299;
+  gid_address_t nested_gid = {
+    .type = GID_ADDR_IP_PREFIX,
+    .ippref = nested_ippref
+  };
+
+  lcaf_t lcaf = {
+    .type = LCAF_INSTANCE_ID,
+    .uni = {
+	    .vni_mask_len = 5,
+	    .vni = 0xa1b2c3d4,
+	    .gid_addr = &nested_gid}
+  };
+  gid_address_type (gid) = GID_ADDR_LCAF;
+  gid_address_lcaf (gid) = lcaf;
+
+  loc2.address = gid[0];
+  locator_copy (&loc1, &loc2);
+
+  _assert (0 == locator_cmp (&loc1, &loc2));
+
+done:
+  locator_free (&loc1);
+  return error;
+}
+
+static clib_error_t *
+test_gid_parse_ip_pref ()
+{
+  clib_error_t *error = 0;
+  gid_address_t _gid_addr, *gid_addr = &_gid_addr;
+  gid_address_t _gid_addr_copy, *copy = &_gid_addr_copy;
+
+  /* *INDENT-OFF* */
+  u8 data[] =
+    {
+      0x00, 0x01,             /* AFI = IPv4 */
+      0x10, 0xbb, 0xcc, 0xdd, /* ipv4 address */
+    };
+  /* *INDENT-ON* */
+
+  u32 len = gid_address_parse (data, gid_addr);
+  _assert (6 == len);
+  gid_address_copy (copy, gid_addr);
+  _assert (0 == gid_address_cmp (copy, gid_addr));
+done:
+  return error;
+}
+
+static clib_error_t *
+test_gid_parse_mac ()
+{
+  clib_error_t *error = 0;
+  gid_address_t _gid, *gid = &_gid;
+  gid_address_t _gid_copy, *gid_copy = &_gid_copy;
+
+  /* *INDENT-OFF* */
+  u8 data[] =
+    {
+      0x40, 0x05,             /* AFI = MAC address */
+      0x10, 0xbb, 0xcc, 0xdd, /* MAC */
+      0x77, 0x99,
+    };
+  /* *INDENT-ON* */
+
+  u32 len = gid_address_parse (data, gid);
+  _assert (8 == len);
+  _assert (GID_ADDR_MAC == gid_address_type (gid));
+  gid_address_copy (gid_copy, gid);
+  _assert (0 == gid_address_cmp (gid_copy, gid));
+done:
+  return error;
+}
+
+static clib_error_t *
+test_gid_write_nsh (void)
+{
+  clib_error_t *error = 0;
+
+  u8 *b = clib_mem_alloc (500);
+  clib_memset (b, 0, 500);
+
+  gid_address_t g = {
+    .vni = 0,
+    .nsh.spi = 0x112233,
+    .nsh.si = 0x42,
+    .type = GID_ADDR_NSH,
+  };
+
+  u16 len = gid_address_put (b, &g);
+
+  /* *INDENT-OFF* */
+  u8 expected[] =
+    {
+      0x40, 0x03, 0x00, 0x00, /* AFI = LCAF*/
+      0x11, 0x00, 0x00, 0x04, /* type = SPI LCAF, length = 4 */
+
+      /* Service Path ID, Service index */
+      0x11, 0x22, 0x33, 0x42, /* SPI, SI */
+    };
+  /* *INDENT-ON* */
+
+  _assert (sizeof (expected) == len);
+  _assert (0 == memcmp (expected, b, len));
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+static clib_error_t *
+test_gid_parse_nsh ()
+{
+  clib_error_t *error = 0;
+  gid_address_t _gid_addr, *gid_addr = &_gid_addr;
+  gid_address_t _gid_addr_copy, *copy = &_gid_addr_copy;
+
+  clib_memset (gid_addr, 0, sizeof (gid_addr[0]));
+  clib_memset (copy, 0, sizeof (copy[0]));
+
+  /* *INDENT-OFF* */
+  u8 data[] =
+    {
+      0x40, 0x03, 0x00, 0x00, /* AFI = LCAF*/
+      0x11, 0x00, 0x00, 0x04, /* type = SPI LCAF, length = 4 */
+
+      /* Service Path ID, Service index */
+      0x55, 0x99, 0x42, 0x09, /* SPI, SI */
+    };
+  /* *INDENT-ON* */
+
+  u32 len = gid_address_parse (data, gid_addr);
+  _assert (sizeof (data) == len);
+  gid_address_copy (copy, gid_addr);
+  _assert (0 == gid_address_cmp (gid_addr, copy));
+  _assert (GID_ADDR_NSH == gid_address_type (copy));
+  _assert (0 == gid_address_vni (copy));
+  _assert (gid_address_nsh_spi (copy) == 0x559942);
+  _assert (gid_address_nsh_si (copy) == 0x09);
+
+done:
+  gid_address_free (copy);
+  gid_address_free (gid_addr);
+  return error;
+}
+
+static clib_error_t *
+test_gid_parse_lcaf ()
+{
+  clib_error_t *error = 0;
+  gid_address_t _gid_addr, *gid_addr = &_gid_addr;
+  gid_address_t _gid_addr_copy, *gid_addr_copy = &_gid_addr_copy;
+
+  clib_memset (gid_addr, 0, sizeof (gid_addr[0]));
+  clib_memset (gid_addr_copy, 0, sizeof (gid_addr_copy[0]));
+
+  /* *INDENT-OFF* */
+  u8 data[] =
+    {
+      0x40, 0x03,             /* AFI = LCAF*/
+
+      /* LCAF header*/
+      0x00, 0x00,             /* reserved1, flags */
+      0x02,                   /* type = Instance ID */
+      0x18,                   /* IID mask-len */
+      0x00, 0x0a,             /* iid length + next AFI lenght */
+      /* LCAF Instance ID */
+      0x00, 0x00, 0x00, 0x09, /* iid */
+      0x00, 0x01,             /* AFI = ipv4 */
+      0x10, 0xbb, 0xcc, 0xdd, /* ipv4 address */
+    };
+  /* *INDENT-ON* */
+
+  u32 len = gid_address_parse (data, gid_addr);
+  _assert (18 == len);
+  gid_address_copy (gid_addr_copy, gid_addr);
+  _assert (0 == gid_address_cmp (gid_addr_copy, gid_addr));
+  _assert (GID_ADDR_IP_PREFIX == gid_address_type (gid_addr));
+  _assert (9 == gid_address_vni (gid_addr));
+  _assert (0x18 == gid_address_vni_mask (gid_addr));
+  _assert (0xddccbb10 == gid_addr->ippref.addr.ip.v4.as_u32);
+
+done:
+  gid_address_free (gid_addr);
+  gid_address_free (gid_addr_copy);
+  return error;
+}
+
+/* recursive LCAFs are not supported */
+#if 0
+static clib_error_t *
+test_gid_parse_lcaf_complex ()
+{
+  clib_error_t *error = 0;
+  gid_address_t _gid_addr, *gid_addr = &_gid_addr;
+  gid_address_t _gid_addr_copy, *gid_addr_copy = &_gid_addr_copy;
+
+  clib_memset (gid_addr, 0, sizeof (gid_addr[0]));
+  clib_memset (gid_addr_copy, 0, sizeof (gid_addr_copy[0]));
+
+  /* *INDENT-OFF* */
+  u8 data[] = {
+    0x40, 0x03,			/* AFI = LCAF */
+
+    /* LCAF header */
+    0x00, 0x00,			/* reserved1, flags */
+    0x02,			/* type = Instance ID */
+    0x18,			/* IID mask-len */
+    0x00, 0x0a,			/* iid length + next AFI lenght */
+    /* LCAF Instance ID */
+    0x00, 0x00, 0x00, 0x0b,	/* iid */
+
+    0x40, 0x03,			/* AFI = LCAF */
+    /* LCAF header */
+    0x00, 0x00,			/* reserved1, flags */
+    0x02,			/* type = Instance ID */
+    0x17,			/* IID mask-len */
+    0x00, 0x0a,			/* iid length + next AFI lenght */
+    /* LCAF Instance ID */
+    0x00, 0x00, 0x00, 0x0c,	/* iid */
+
+    0x40, 0x03,			/* AFI = LCAF */
+    /* LCAF header */
+    0x00, 0x00,			/* reserved1, flags */
+    0x02,			/* type = Instance ID */
+    0x16,			/* IID mask-len */
+    0x00, 0x16,			/* iid length + next AFI lenght */
+    /* LCAF Instance ID */
+    0x00, 0x00, 0x00, 0x0d,	/* iid */
+
+    0x00, 0x02,			/* AFI = IPv6 */
+
+    0x10, 0xbb, 0xcc, 0xdd,
+    0x10, 0xbb, 0xcc, 0xdd,
+    0x10, 0xbb, 0xcc, 0xdd,
+    0x10, 0xbb, 0xcc, 0xdd,	/* ipv6 address */
+  };
+  /* *INDENT-ON* */
+
+  u32 len = gid_address_parse (data, gid_addr);
+  _assert (54 == len);
+  _assert (gid_addr->type == GID_ADDR_LCAF);
+  gid_address_copy (gid_addr_copy, gid_addr);
+  _assert (0 == gid_address_cmp (gid_addr_copy, gid_addr));
+  _assert (gid_addr_copy->type == GID_ADDR_LCAF);
+
+  lcaf_t *lcaf = &gid_address_lcaf (gid_addr_copy);
+  _assert (lcaf->type == LCAF_INSTANCE_ID);
+  vni_t *v = (vni_t *) lcaf;
+  _assert (v->vni == 0x0b);
+  _assert (v->vni_mask_len == 0x18);
+
+  gid_address_t *tmp = vni_gid (v);
+  _assert (gid_address_type (tmp) == GID_ADDR_LCAF);
+  lcaf = &gid_address_lcaf (tmp);
+  _assert (lcaf->type == LCAF_INSTANCE_ID);
+
+  v = (vni_t *) lcaf;
+  _assert (v->vni == 0x0c);
+  _assert (v->vni_mask_len == 0x17);
+
+  tmp = vni_gid (v);
+  _assert (gid_address_type (tmp) == GID_ADDR_LCAF);
+  lcaf = &gid_address_lcaf (tmp);
+
+  _assert (lcaf->type == LCAF_INSTANCE_ID);
+  v = (vni_t *) lcaf;
+  _assert (v->vni == 0x0d);
+  _assert (v->vni_mask_len == 0x16);
+
+  tmp = vni_gid (v);
+  _assert (gid_address_type (tmp) == GID_ADDR_IP_PREFIX);
+
+  ip_prefix_t *ip_pref = &gid_address_ippref (tmp);
+  ip6_address_t *ip6 = &ip_prefix_v6 (ip_pref);
+  _assert (ip6->as_u32[0] == 0xddccbb10);
+  _assert (ip6->as_u32[1] == 0xddccbb10);
+  _assert (ip6->as_u32[2] == 0xddccbb10);
+  _assert (ip6->as_u32[3] == 0xddccbb10);
+  _assert (ip_prefix_version (ip_pref) == IP6);
+
+done:
+  gid_address_free (gid_addr);
+  gid_address_free (gid_addr_copy);
+  return error;
+}
+#endif
+
+static clib_error_t *
+test_write_mac_in_lcaf (void)
+{
+  clib_error_t *error = 0;
+
+  u8 *b = clib_mem_alloc (500);
+  clib_memset (b, 0, 500);
+
+  gid_address_t g = {
+    .mac = {0x1, 0x2, 0x3, 0x4, 0x5, 0x6},
+    .vni = 0x01020304,
+    .vni_mask = 0x10,
+    .type = GID_ADDR_MAC,
+  };
+
+  u16 len = gid_address_put (b, &g);
+
+  /* *INDENT-OFF* */
+  u8 expected[] =
+    {
+      0x40, 0x03,             /* AFI = LCAF */
+      0x00,                   /* reserved1 */
+      0x00,                   /* flags */
+      0x02,                   /* LCAF type = Instance ID */
+      0x10,                   /* IID/IID mask len */
+      0x00, 0x0c,             /* length */
+      0x01, 0x02, 0x03, 0x04, /* Instance ID / VNI */
+
+      0x40, 0x05,             /* AFI = MAC */
+      0x01, 0x02, 0x03, 0x04,
+      0x05, 0x06              /* MAC */
+    };
+  /* *INDENT-ON* */
+
+  _assert (sizeof (expected) == len);
+  _assert (0 == memcmp (expected, b, len));
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+static clib_error_t *
+test_mac_address_write (void)
+{
+  clib_error_t *error = 0;
+
+  u8 *b = clib_mem_alloc (500);
+  clib_memset (b, 0, 500);
+
+  gid_address_t g = {
+    .mac = {0x1, 0x2, 0x3, 0x4, 0x5, 0x6},
+    .type = GID_ADDR_MAC,
+  };
+
+  u16 len = gid_address_put (b, &g);
+  _assert (8 == len);
+
+  /* *INDENT-OFF* */
+  u8 expected[] =
+    {
+      0x40, 0x05,             /* AFI = MAC */
+      0x01, 0x02, 0x03, 0x04,
+      0x05, 0x06              /* MAC */
+    };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (expected, b, len));
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+static clib_error_t *
+test_src_dst_with_vni_serdes (void)
+{
+  clib_error_t *error = 0;
+  u8 *b = clib_mem_alloc (500);
+  clib_memset (b, 0, 500);
+
+  /* *INDENT-OFF* */
+  fid_address_t src =
+    {
+      .type = FID_ADDR_IP_PREF,
+      .ippref =
+        {
+          .len = 24,
+          .addr =
+            {
+              .version = IP4,
+              .ip.v4.data = { 0x1, 0x2, 0x3, 0x0 }
+            }
+        }
+    };
+
+  fid_address_t dst =
+    {
+      .type = FID_ADDR_IP_PREF,
+      .ippref =
+        {
+          .len = 16,
+          .addr =
+            {
+              .version = IP4,
+              .ip.v4.data = { 0x9, 0x8, 0x0, 0x0 }
+            }
+        }
+    };
+
+  source_dest_t sd =
+    {
+      .src = src,
+      .dst = dst
+    };
+
+  gid_address_t g =
+    {
+      .sd = sd,
+      .type = GID_ADDR_SRC_DST,
+      .vni = 0x12345678,
+      .vni_mask = 0x9
+    };
+
+  /* *INDENT-ON* */
+
+  u16 size_to_put = gid_address_size_to_put (&g);
+  _assert (36 == size_to_put);
+  _assert (0 == gid_address_len (&g));
+
+  u16 write_len = gid_address_put (b, &g);
+  _assert (size_to_put == write_len);
+
+  /* *INDENT-OFF* */
+  u8 expected_data[] =
+    {
+      0x40, 0x03, 0x00, 0x00,  /* AFI = LCAF, reserved1, flags */
+      0x02, 0x09, 0x00, 0x1c,  /* LCAF type = IID, IID mask-len, length */
+      0x12, 0x34, 0x56, 0x78,  /* reserved; source-ML, Dest-ML */
+
+      0x40, 0x03, 0x00, 0x00,  /* AFI = LCAF, reserved1, flags */
+      0x0c, 0x00, 0x00, 0x10,  /* LCAF type = source/dest key, rsvd, length */
+      0x00, 0x00, 0x18, 0x10,  /* reserved; source-ML, Dest-ML */
+
+      0x00, 0x01,              /* AFI = ip4 */
+      0x01, 0x02, 0x03, 0x00,  /* source */
+
+      0x00, 0x01,              /* AFI = ip4 */
+      0x09, 0x08, 0x00, 0x00,  /* destination */
+    };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (expected_data, b, sizeof (expected_data)));
+
+  gid_address_t p;
+  clib_memset (&p, 0, sizeof (p));
+  _assert (write_len == gid_address_parse (b, &p));
+  _assert (0 == gid_address_cmp (&g, &p));
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+static clib_error_t *
+test_src_dst_deser_bad_afi (void)
+{
+  clib_error_t *error = 0;
+
+  /* *INDENT-OFF* */
+  u8 expected_data[] =
+    {
+      0x40, 0x03, 0x00, 0x00,  /* AFI = LCAF, reserved1, flags */
+      0x0c, 0x00, 0x00, 0x14,  /* LCAF type = source/dest key, rsvd, length */
+      0x00, 0x00, 0x00, 0x00,  /* reserved; source-ML, Dest-ML */
+
+      0xde, 0xad,              /* AFI = bad value */
+      0x11, 0x22, 0x33, 0x44,
+      0x55, 0x66,              /* source */
+
+      0x40, 0x05,              /* AFI = MAC */
+      0x10, 0x21, 0x32, 0x43,
+      0x54, 0x65,              /* destination */
+    };
+  /* *INDENT-ON* */
+
+  gid_address_t p;
+  _assert (~0 == gid_address_parse (expected_data, &p));
+done:
+  return error;
+}
+
+static clib_error_t *
+test_src_dst_serdes (void)
+{
+  clib_error_t *error = 0;
+
+  u8 *b = clib_mem_alloc (500);
+  clib_memset (b, 0, 500);
+
+  fid_address_t src = {
+    .type = FID_ADDR_MAC,
+    .mac = {0x11, 0x22, 0x33, 0x44, 0x55, 0x66}
+  };
+
+  fid_address_t dst = {
+    .type = FID_ADDR_MAC,
+    .mac = {0x10, 0x21, 0x32, 0x43, 0x54, 0x65}
+  };
+
+  source_dest_t sd = {
+    .src = src,
+    .dst = dst
+  };
+
+  gid_address_t g = {
+    .sd = sd,
+    .type = GID_ADDR_SRC_DST,
+    .vni = 0x0,
+    .vni_mask = 0x0
+  };
+
+  u16 size_to_put = gid_address_size_to_put (&g);
+  _assert (28 == size_to_put);
+  _assert (0 == gid_address_len (&g));
+
+  u16 write_len = gid_address_put (b, &g);
+  _assert (size_to_put == write_len);
+
+  /* *INDENT-OFF* */
+  u8 expected_data[] =
+    {
+      0x40, 0x03, 0x00, 0x00,  /* AFI = LCAF, reserved1, flags */
+      0x0c, 0x00, 0x00, 0x14,  /* LCAF type = source/dest key, rsvd, length */
+      0x00, 0x00, 0x00, 0x00,  /* reserved; source-ML, Dest-ML */
+
+      0x40, 0x05,              /* AFI = MAC */
+      0x11, 0x22, 0x33, 0x44,
+      0x55, 0x66,              /* source */
+
+      0x40, 0x05,              /* AFI = MAC */
+      0x10, 0x21, 0x32, 0x43,
+      0x54, 0x65,              /* destination */
+    };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (expected_data, b, sizeof (expected_data)));
+
+  gid_address_t p;
+  clib_memset (&p, 0, sizeof (p));
+  _assert (write_len == gid_address_parse (b, &p));
+  _assert (0 == gid_address_cmp (&g, &p));
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+static clib_error_t *
+test_gid_address_write (void)
+{
+  clib_error_t *error = 0;
+  ip_prefix_t ippref_data, *ippref = &ippref_data;
+
+  u8 *b = clib_mem_alloc (500);
+  clib_memset (b, 0, 500);
+
+  ip_prefix_version (ippref) = IP4;
+  ip_prefix_len (ippref) = 9;
+  ip4_address_t *ip4 = &ip_prefix_v4 (ippref);
+  ip4->as_u32 = 0xaabbccdd;
+
+  gid_address_t g = {
+    .ippref = ippref[0],
+    .type = GID_ADDR_IP_PREFIX,
+    .vni = 0x01020304,
+    .vni_mask = 0x18
+  };
+
+  _assert (18 == gid_address_size_to_put (&g));
+  _assert (gid_address_len (&g) == 9);
+
+  u16 write_len = gid_address_put (b, &g);
+  _assert (18 == write_len);
+
+  /* *INDENT-OFF* */
+  u8 expected_gid_data[] =
+    {
+      0x40, 0x03,             /* AFI = LCAF */
+      0x00,                   /* reserved1 */
+      0x00,                   /* flags */
+      0x02,                   /* LCAF type = Instance ID */
+      0x18,                   /* IID/VNI mask len */
+      0x00, 0x0a,             /* length */
+      0x01, 0x02, 0x03, 0x04, /* Instance ID / VNI */
+
+      0x00, 0x01,             /* AFI = IPv4 */
+      0xdd, 0xcc, 0xbb, 0xaa, /* ipv4 addr */
+    };
+  /* *INDENT-ON* */
+
+  _assert (0 == memcmp (expected_gid_data, b, sizeof (expected_gid_data)));
+done:
+  clib_mem_free (b);
+  return error;
+}
+
+#undef foreach_test_case
+
+#define foreach_test_case                 \
+  _(locator_type)                         \
+  _(gid_parse_ip_pref)                    \
+  _(gid_parse_mac)                        \
+  _(gid_parse_lcaf)                       \
+  _(gid_parse_nsh)                        \
+  _(gid_write_nsh)                        \
+  _(mac_address_write)                    \
+  _(gid_address_write)                    \
+  _(src_dst_serdes)                       \
+  _(write_mac_in_lcaf)                    \
+  _(src_dst_deser_bad_afi)                \
+  _(src_dst_with_vni_serdes)
+
+static int
+lisp_cp_types_tests (vlib_main_t * vm, unformat_input_t * input)
+{
+  clib_error_t *error;
+
+#define _(_test_name)                   		\
+  error = test_ ## _test_name ();       		\
+  if (error)                            		\
+    {                                   		\
+      fformat (stderr, "FAIL: test_" #_test_name "\n");	\
+      return -1;                        		\
+    }							\
+  else							\
+      fformat (stderr, "PASS: test_" #_test_name "\n");	\
+
+  foreach_test_case
+#undef _
+    return 0;
+}
+
+#undef _assert
+
+static clib_error_t *
+lisp_cp_test (vlib_main_t * vm, unformat_input_t * input,
+	      vlib_cli_command_t * cmd_arg)
+{
+  int res = 0;
+
+  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (input, "serdes"))
+	{
+	  res = lisp_cp_serdes_tests (vm, input);
+	}
+      if (unformat (input, "types"))
+	{
+	  res = lisp_cp_types_tests (vm, input);
+	}
+      else if (unformat (input, "all"))
+	{
+	  if ((res = lisp_cp_serdes_tests (vm, input)))
+	    goto done;
+	  if ((res = lisp_cp_types_tests (vm, input)))
+	    goto done;
+	}
+      else
+	break;
+    }
+
+done:
+  if (res)
+    return clib_error_return (0, "rbtree unit test failed");
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (lisp_cp_command, static) =
+{
+  .path = "test lisp cp",
+  .short_help = "lisp cp internal unit tests",
+  .function = lisp_cp_test,
+};
+/* *INDENT-ON* */
+
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */