nsh: migrate old MUTIARCH macros to VLIB_NODE_FN

Change-Id: Iafe8b3a38f2a7d7571e60db91608d8130bb07cb3
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>

1 files changed, 724 insertions, 0 deletions

diff --git a/src/plugins/nsh/nsh_api.c b/src/plugins/nsh/nsh_api.c
new file mode 100644
index 00000000000..72ca2d28671
--- /dev/null
+++ b/src/plugins/nsh/nsh_api.c
@@ -0,0 +1,724 @@
+/*
+ * nsh_api.c - nsh mapping api
+ *
+ * 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 <vnet/plugin/plugin.h>
+#include <nsh/nsh.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vpp/app/version.h>
+
+/* define message IDs */
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include <nsh/nsh.api.h>
+  /* We'll want to know how many messages IDs we need... */
+  VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+/* define message structures */
+#define vl_typedefs
+#include <nsh/nsh.api.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <nsh/nsh.api.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <nsh/nsh.api.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <nsh/nsh.api.h>
+#undef vl_api_version
+
+#define vl_msg_name_crc_list
+#include <nsh/nsh.api.h>
+#undef vl_msg_name_crc_list
+
+/*
+ * A handy macro to set up a message reply.
+ * Assumes that the following variables are available:
+ * mp - pointer to request message
+ * rmp - pointer to reply message type
+ * rv - return value
+ */
+
+#define REPLY_MACRO(t)                                          \
+  do {								\
+    unix_shared_memory_queue_t * q =                            \
+      vl_api_client_index_to_input_queue (mp->client_index);	\
+    if (!q)                                                     \
+      return;							\
+                                                                \
+    rmp = vl_msg_api_alloc (sizeof (*rmp));                     \
+    rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base);               \
+    rmp->context = mp->context;                                 \
+    rmp->retval = ntohl(rv);                                    \
+                                                                \
+    vl_msg_api_send_shmem (q, (u8 *)&rmp);                      \
+  } while(0);
+
+#define REPLY_MACRO2(t, body)                                   \
+  do {                                                          \
+    unix_shared_memory_queue_t * q;                             \
+    rv = vl_msg_api_pd_handler (mp, rv);                        \
+    q = vl_api_client_index_to_input_queue (mp->client_index);  \
+    if (!q)                                                     \
+        return;                                                 \
+                                                                \
+    rmp = vl_msg_api_alloc (sizeof (*rmp));                     \
+    rmp->_vl_msg_id = ntohs((t)+nm->msg_id_base);               \
+    rmp->context = mp->context;                                 \
+    rmp->retval = ntohl(rv);                                    \
+    do {body;} while (0);                                       \
+    vl_msg_api_send_shmem (q, (u8 *)&rmp);                      \
+  } while(0);
+
+/* List of message types that this plugin understands */
+
+#define foreach_nsh_plugin_api_msg		\
+  _(NSH_ADD_DEL_ENTRY, nsh_add_del_entry)	\
+  _(NSH_ENTRY_DUMP, nsh_entry_dump)             \
+  _(NSH_ADD_DEL_MAP, nsh_add_del_map)           \
+  _(NSH_MAP_DUMP, nsh_map_dump)
+
+static void send_nsh_entry_details
+  (nsh_entry_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+  vl_api_nsh_entry_details_t *rmp;
+  nsh_main_t *nm = &nsh_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  clib_memset (rmp, 0, sizeof (*rmp));
+
+  rmp->_vl_msg_id = ntohs ((VL_API_NSH_ENTRY_DETAILS) + nm->msg_id_base);
+  rmp->ver_o_c = t->nsh_base.ver_o_c;
+  rmp->ttl = (t->nsh_base.ver_o_c & NSH_TTL_H4_MASK) << 2 |
+    (t->nsh_base.length & NSH_TTL_L2_MASK) >> 6;
+  rmp->length = t->nsh_base.length & NSH_LEN_MASK;
+  rmp->md_type = t->nsh_base.md_type;
+  rmp->next_protocol = t->nsh_base.next_protocol;
+  rmp->nsp_nsi = htonl (t->nsh_base.nsp_nsi);
+
+  if (t->nsh_base.md_type == 1)
+    {
+      rmp->tlv_length = 4;
+      rmp->c1 = htonl (t->md.md1_data.c1);
+      rmp->c2 = htonl (t->md.md1_data.c2);
+      rmp->c3 = htonl (t->md.md1_data.c3);
+      rmp->c4 = htonl (t->md.md1_data.c4);
+    }
+  else if (t->nsh_base.md_type == 2)
+    {
+      rmp->tlv_length = t->tlvs_len;
+      clib_memcpy (rmp->tlv, t->tlvs_data, t->tlvs_len);
+    }
+
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void send_nsh_map_details
+  (nsh_map_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+  vl_api_nsh_map_details_t *rmp;
+  nsh_main_t *nm = &nsh_main;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  clib_memset (rmp, 0, sizeof (*rmp));
+
+  rmp->_vl_msg_id = ntohs ((VL_API_NSH_MAP_DETAILS) + nm->msg_id_base);
+  rmp->nsp_nsi = htonl (t->nsp_nsi);
+  rmp->mapped_nsp_nsi = htonl (t->mapped_nsp_nsi);
+  rmp->nsh_action = htonl (t->nsh_action);
+  rmp->sw_if_index = htonl (t->sw_if_index);
+  rmp->rx_sw_if_index = htonl (t->rx_sw_if_index);
+  rmp->next_node = htonl (t->next_node);
+
+  rmp->context = context;
+
+  vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_nsh_map_dump_t_handler (vl_api_nsh_map_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  nsh_main_t *nm = &nsh_main;
+  nsh_map_t *t;
+  u32 map_index;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    {
+      return;
+    }
+
+  map_index = ntohl (mp->map_index);
+
+  if (~0 == map_index)
+    {
+      pool_foreach (t, nm->nsh_mappings, (
+					   {
+					   send_nsh_map_details (t, q,
+								 mp->context);
+					   }
+		    ));
+    }
+  else
+    {
+      if (map_index >= vec_len (nm->nsh_mappings))
+	{
+	  return;
+	}
+      t = &nm->nsh_mappings[map_index];
+      send_nsh_map_details (t, q, mp->context);
+    }
+}
+
+/** API message handler */
+static void
+vl_api_nsh_add_del_map_t_handler (vl_api_nsh_add_del_map_t * mp)
+{
+  vl_api_nsh_add_del_map_reply_t *rmp;
+  nsh_main_t *nm = &nsh_main;
+  int rv;
+  nsh_add_del_map_args_t _a, *a = &_a;
+  u32 map_index = ~0;
+
+  a->is_add = mp->is_add;
+  a->map.nsp_nsi = ntohl (mp->nsp_nsi);
+  a->map.mapped_nsp_nsi = ntohl (mp->mapped_nsp_nsi);
+  a->map.nsh_action = ntohl (mp->nsh_action);
+  a->map.sw_if_index = ntohl (mp->sw_if_index);
+  a->map.rx_sw_if_index = ntohl (mp->rx_sw_if_index);
+  a->map.next_node = ntohl (mp->next_node);
+
+  rv = nsh_add_del_map (a, &map_index);
+
+  if ((a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN4)
+      | (a->map.next_node == NSH_NODE_NEXT_ENCAP_VXLAN6))
+    {
+      rv = nsh_add_del_proxy_session (a);
+    }
+
+  REPLY_MACRO2 (VL_API_NSH_ADD_DEL_MAP_REPLY, (
+						{
+						rmp->map_index =
+						htonl (map_index);
+						}
+		));
+}
+
+int
+nsh_header_rewrite (nsh_entry_t * nsh_entry)
+{
+  u8 *rw = 0;
+  int len = 0;
+  nsh_base_header_t *nsh_base;
+  nsh_md1_data_t *nsh_md1;
+  nsh_main_t *nm = &nsh_main;
+  nsh_md2_data_t *opt0;
+  nsh_md2_data_t *limit0;
+  nsh_md2_data_t *nsh_md2;
+  nsh_option_map_t _nsh_option, *nsh_option = &_nsh_option;
+  u8 old_option_size = 0;
+  u8 new_option_size = 0;
+
+  vec_free (nsh_entry->rewrite);
+  if (nsh_entry->nsh_base.md_type == 1)
+    {
+      len = sizeof (nsh_base_header_t) + sizeof (nsh_md1_data_t);
+    }
+  else if (nsh_entry->nsh_base.md_type == 2)
+    {
+      /* set to maxim, maybe dataplane will add more TLVs */
+      len = MAX_NSH_HEADER_LEN;
+    }
+  vec_validate_aligned (rw, len - 1, CLIB_CACHE_LINE_BYTES);
+  clib_memset (rw, 0, len);
+
+  nsh_base = (nsh_base_header_t *) rw;
+  nsh_base->ver_o_c = nsh_entry->nsh_base.ver_o_c;
+  nsh_base->length = nsh_entry->nsh_base.length;
+  nsh_base->md_type = nsh_entry->nsh_base.md_type;
+  nsh_base->next_protocol = nsh_entry->nsh_base.next_protocol;
+  nsh_base->nsp_nsi = clib_host_to_net_u32 (nsh_entry->nsh_base.nsp_nsi);
+
+  if (nsh_base->md_type == 1)
+    {
+      nsh_md1 = (nsh_md1_data_t *) (rw + sizeof (nsh_base_header_t));
+      nsh_md1->c1 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c1);
+      nsh_md1->c2 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c2);
+      nsh_md1->c3 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c3);
+      nsh_md1->c4 = clib_host_to_net_u32 (nsh_entry->md.md1_data.c4);
+      nsh_entry->rewrite_size = 24;
+    }
+  else if (nsh_base->md_type == 2)
+    {
+      opt0 = (nsh_md2_data_t *) (nsh_entry->tlvs_data);
+      limit0 = (nsh_md2_data_t *) ((u8 *) opt0 + nsh_entry->tlvs_len);
+
+      nsh_md2 = (nsh_md2_data_t *) (rw + sizeof (nsh_base_header_t));
+      nsh_entry->rewrite_size = sizeof (nsh_base_header_t);
+
+      while (opt0 < limit0)
+	{
+	  old_option_size = sizeof (nsh_md2_data_t) + opt0->length;
+	  /* round to 4-byte */
+	  old_option_size = ((old_option_size + 3) >> 2) << 2;
+
+	  nsh_option = nsh_md2_lookup_option (opt0->class, opt0->type);
+	  if (nsh_option == NULL)
+	    {
+	      goto next_tlv_md2;
+	    }
+
+	  if (nm->add_options[nsh_option->option_id] != NULL)
+	    {
+	      if (0 != nm->add_options[nsh_option->option_id] ((u8 *) nsh_md2,
+							       &new_option_size))
+		{
+		  goto next_tlv_md2;
+		}
+
+	      /* round to 4-byte */
+	      new_option_size = ((new_option_size + 3) >> 2) << 2;
+
+	      nsh_entry->rewrite_size += new_option_size;
+	      nsh_md2 =
+		(nsh_md2_data_t *) (((u8 *) nsh_md2) + new_option_size);
+	      opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size);
+	    }
+	  else
+	    {
+	    next_tlv_md2:
+	      opt0 = (nsh_md2_data_t *) (((u8 *) opt0) + old_option_size);
+	    }
+
+	}
+    }
+
+  nsh_entry->rewrite = rw;
+  nsh_base->length = (nsh_base->length & NSH_TTL_L2_MASK) |
+    ((nsh_entry->rewrite_size >> 2) & NSH_LEN_MASK);
+
+  return 0;
+}
+
+extern vnet_device_class_t nsh_device_class;
+extern vnet_hw_interface_class_t nsh_hw_class;
+
+/**
+ * Action function to add or del an nsh map.
+ * Shared by both CLI and binary API
+ **/
+int
+nsh_add_del_map (nsh_add_del_map_args_t * a, u32 * map_indexp)
+{
+  nsh_main_t *nm = &nsh_main;
+  vnet_main_t *vnm = nm->vnet_main;
+  nsh_map_t *map = 0;
+  u32 key, *key_copy;
+  uword *entry;
+  hash_pair_t *hp;
+  u32 map_index = ~0;
+  vnet_hw_interface_t *hi;
+  u32 nsh_hw_if = ~0;
+  u32 nsh_sw_if = ~0;
+
+  /* net order, so data plane could use nsh header to lookup directly */
+  key = clib_host_to_net_u32 (a->map.nsp_nsi);
+
+  entry = hash_get_mem (nm->nsh_mapping_by_key, &key);
+
+  if (a->is_add)
+    {
+      /* adding an entry, must not already exist */
+      if (entry)
+	return -1;		//TODO API_ERROR_INVALID_VALUE;
+
+      pool_get_aligned (nm->nsh_mappings, map, CLIB_CACHE_LINE_BYTES);
+      clib_memset (map, 0, sizeof (*map));
+
+      /* copy from arg structure */
+      map->nsp_nsi = a->map.nsp_nsi;
+      map->mapped_nsp_nsi = a->map.mapped_nsp_nsi;
+      map->nsh_action = a->map.nsh_action;
+      map->sw_if_index = a->map.sw_if_index;
+      map->rx_sw_if_index = a->map.rx_sw_if_index;
+      map->next_node = a->map.next_node;
+      map->adj_index = a->map.adj_index;
+
+
+      key_copy = clib_mem_alloc (sizeof (*key_copy));
+      clib_memcpy (key_copy, &key, sizeof (*key_copy));
+
+      hash_set_mem (nm->nsh_mapping_by_key, key_copy, map - nm->nsh_mappings);
+      map_index = map - nm->nsh_mappings;
+
+      if (vec_len (nm->free_nsh_tunnel_hw_if_indices) > 0)
+	{
+	  nsh_hw_if = nm->free_nsh_tunnel_hw_if_indices
+	    [vec_len (nm->free_nsh_tunnel_hw_if_indices) - 1];
+	  _vec_len (nm->free_nsh_tunnel_hw_if_indices) -= 1;
+
+	  hi = vnet_get_hw_interface (vnm, nsh_hw_if);
+	  hi->dev_instance = map_index;
+	  hi->hw_instance = hi->dev_instance;
+	}
+      else
+	{
+	  nsh_hw_if = vnet_register_interface
+	    (vnm, nsh_device_class.index, map_index, nsh_hw_class.index,
+	     map_index);
+	  hi = vnet_get_hw_interface (vnm, nsh_hw_if);
+	  hi->output_node_index = nsh_aware_vnf_proxy_node.index;
+	}
+
+      map->nsh_hw_if = nsh_hw_if;
+      map->nsh_sw_if = nsh_sw_if = hi->sw_if_index;
+      vec_validate_init_empty (nm->tunnel_index_by_sw_if_index, nsh_sw_if,
+			       ~0);
+      nm->tunnel_index_by_sw_if_index[nsh_sw_if] = key;
+
+      vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
+				   VNET_SW_INTERFACE_FLAG_ADMIN_UP);
+    }
+  else
+    {
+      if (!entry)
+	return -2;		//TODO API_ERROR_NO_SUCH_ENTRY;
+
+      map = pool_elt_at_index (nm->nsh_mappings, entry[0]);
+
+      vnet_sw_interface_set_flags (vnm, map->nsh_sw_if,
+				   VNET_SW_INTERFACE_FLAG_ADMIN_DOWN);
+      vec_add1 (nm->free_nsh_tunnel_hw_if_indices, map->nsh_sw_if);
+      nm->tunnel_index_by_sw_if_index[map->nsh_sw_if] = ~0;
+
+      hp = hash_get_pair (nm->nsh_mapping_by_key, &key);
+      key_copy = (void *) (hp->key);
+      hash_unset_mem (nm->nsh_mapping_by_key, &key);
+      clib_mem_free (key_copy);
+
+      pool_put (nm->nsh_mappings, map);
+    }
+
+  if (map_indexp)
+    *map_indexp = map_index;
+
+  return 0;
+}
+
+/**
+ * Action function to add or del an nsh-proxy-session.
+ * Shared by both CLI and binary API
+ **/
+int
+nsh_add_del_proxy_session (nsh_add_del_map_args_t * a)
+{
+  nsh_main_t *nm = &nsh_main;
+  nsh_proxy_session_t *proxy = 0;
+  nsh_proxy_session_by_key_t key, *key_copy;
+  uword *entry;
+  hash_pair_t *hp;
+  u32 nsp = 0, nsi = 0;
+
+  clib_memset (&key, 0, sizeof (key));
+  key.transport_type = a->map.next_node;
+  key.transport_index = a->map.sw_if_index;
+
+  entry = hash_get_mem (nm->nsh_proxy_session_by_key, &key);
+
+  if (a->is_add)
+    {
+      /* adding an entry, must not already exist */
+      if (entry)
+	return -1;		//TODO API_ERROR_INVALID_VALUE;
+
+      pool_get_aligned (nm->nsh_proxy_sessions, proxy, CLIB_CACHE_LINE_BYTES);
+      clib_memset (proxy, 0, sizeof (*proxy));
+
+      /* Nsi needs to minus 1 within NSH-Proxy */
+      nsp = (a->map.nsp_nsi >> NSH_NSP_SHIFT) & NSH_NSP_MASK;
+      nsi = a->map.nsp_nsi & NSH_NSI_MASK;
+      if (nsi == 0)
+	return -1;
+
+      nsi = nsi - 1;
+      /* net order, so could use it to lookup nsh map table directly */
+      proxy->nsp_nsi = clib_host_to_net_u32 ((nsp << NSH_NSP_SHIFT) | nsi);
+
+      key_copy = clib_mem_alloc (sizeof (*key_copy));
+      clib_memcpy (key_copy, &key, sizeof (*key_copy));
+
+      hash_set_mem (nm->nsh_proxy_session_by_key, key_copy,
+		    proxy - nm->nsh_proxy_sessions);
+    }
+  else
+    {
+      if (!entry)
+	return -2;		//TODO API_ERROR_NO_SUCH_ENTRY;
+
+      proxy = pool_elt_at_index (nm->nsh_proxy_sessions, entry[0]);
+      hp = hash_get_pair (nm->nsh_proxy_session_by_key, &key);
+      key_copy = (void *) (hp->key);
+      hash_unset_mem (nm->nsh_proxy_session_by_key, &key);
+      clib_mem_free (key_copy);
+
+      pool_put (nm->nsh_proxy_sessions, proxy);
+    }
+
+  return 0;
+}
+
+/**
+ * Action function for adding an NSH entry
+ * nsh_add_del_entry_args_t *a: host order
+ */
+int
+nsh_add_del_entry (nsh_add_del_entry_args_t * a, u32 * entry_indexp)
+{
+  nsh_main_t *nm = &nsh_main;
+  nsh_entry_t *nsh_entry = 0;
+  u32 key, *key_copy;
+  uword *entry_id;
+  hash_pair_t *hp;
+  u32 entry_index = ~0;
+  u8 tlvs_len = 0;
+  u8 *data = 0;
+
+  /* host order, because nsh map table stores nsp_nsi in host order */
+  key = a->nsh_entry.nsh_base.nsp_nsi;
+
+  entry_id = hash_get_mem (nm->nsh_entry_by_key, &key);
+
+  if (a->is_add)
+    {
+      /* adding an entry, must not already exist */
+      if (entry_id)
+	return -1;		// TODO VNET_API_ERROR_INVALID_VALUE;
+
+      pool_get_aligned (nm->nsh_entries, nsh_entry, CLIB_CACHE_LINE_BYTES);
+      clib_memset (nsh_entry, 0, sizeof (*nsh_entry));
+
+      /* copy from arg structure */
+#define _(x) nsh_entry->nsh_base.x = a->nsh_entry.nsh_base.x;
+      foreach_copy_nsh_base_hdr_field;
+#undef _
+
+      if (a->nsh_entry.nsh_base.md_type == 1)
+	{
+	  nsh_entry->md.md1_data.c1 = a->nsh_entry.md.md1_data.c1;
+	  nsh_entry->md.md1_data.c2 = a->nsh_entry.md.md1_data.c2;
+	  nsh_entry->md.md1_data.c3 = a->nsh_entry.md.md1_data.c3;
+	  nsh_entry->md.md1_data.c4 = a->nsh_entry.md.md1_data.c4;
+	}
+      else if (a->nsh_entry.nsh_base.md_type == 2)
+	{
+	  vec_free (nsh_entry->tlvs_data);
+	  tlvs_len = a->nsh_entry.tlvs_len;
+	  vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
+
+	  clib_memcpy (data, a->nsh_entry.tlvs_data, tlvs_len);
+	  nsh_entry->tlvs_data = data;
+	  nsh_entry->tlvs_len = tlvs_len;
+	  vec_free (a->nsh_entry.tlvs_data);
+	}
+
+      nsh_header_rewrite (nsh_entry);
+
+      key_copy = clib_mem_alloc (sizeof (*key_copy));
+      clib_memcpy (key_copy, &key, sizeof (*key_copy));
+
+      hash_set_mem (nm->nsh_entry_by_key, key_copy,
+		    nsh_entry - nm->nsh_entries);
+      entry_index = nsh_entry - nm->nsh_entries;
+    }
+  else
+    {
+      if (!entry_id)
+	return -2;		//TODO API_ERROR_NO_SUCH_ENTRY;
+
+      nsh_entry = pool_elt_at_index (nm->nsh_entries, entry_id[0]);
+      hp = hash_get_pair (nm->nsh_entry_by_key, &key);
+      key_copy = (void *) (hp->key);
+      hash_unset_mem (nm->nsh_entry_by_key, &key);
+      clib_mem_free (key_copy);
+
+      vec_free (nsh_entry->tlvs_data);
+      vec_free (nsh_entry->rewrite);
+      pool_put (nm->nsh_entries, nsh_entry);
+    }
+
+  if (entry_indexp)
+    *entry_indexp = entry_index;
+
+  return 0;
+}
+
+
+/** API message handler */
+static void vl_api_nsh_add_del_entry_t_handler
+  (vl_api_nsh_add_del_entry_t * mp)
+{
+  vl_api_nsh_add_del_entry_reply_t *rmp;
+  nsh_main_t *nm = &nsh_main;
+  int rv;
+  nsh_add_del_entry_args_t _a, *a = &_a;
+  u32 entry_index = ~0;
+  u8 tlvs_len = 0;
+  u8 *data = 0;
+
+  a->is_add = mp->is_add;
+  a->nsh_entry.nsh_base.ver_o_c =
+    (mp->ver_o_c & 0xF0) | ((mp->ttl & NSH_LEN_MASK) >> 2);
+  a->nsh_entry.nsh_base.length =
+    (mp->length & NSH_LEN_MASK) | ((mp->ttl & 0x3) << 6);
+  a->nsh_entry.nsh_base.md_type = mp->md_type;
+  a->nsh_entry.nsh_base.next_protocol = mp->next_protocol;
+  a->nsh_entry.nsh_base.nsp_nsi = ntohl (mp->nsp_nsi);
+  if (mp->md_type == 1)
+    {
+      a->nsh_entry.md.md1_data.c1 = ntohl (mp->c1);
+      a->nsh_entry.md.md1_data.c2 = ntohl (mp->c2);
+      a->nsh_entry.md.md1_data.c3 = ntohl (mp->c3);
+      a->nsh_entry.md.md1_data.c4 = ntohl (mp->c4);
+    }
+  else if (mp->md_type == 2)
+    {
+      tlvs_len = mp->tlv_length;
+      vec_validate_aligned (data, tlvs_len - 1, CLIB_CACHE_LINE_BYTES);
+
+      clib_memcpy (data, mp->tlv, tlvs_len);
+      a->nsh_entry.tlvs_data = data;
+      a->nsh_entry.tlvs_len = tlvs_len;
+    }
+
+  rv = nsh_add_del_entry (a, &entry_index);
+
+  REPLY_MACRO2 (VL_API_NSH_ADD_DEL_ENTRY_REPLY, (
+						  {
+						  rmp->entry_index =
+						  htonl (entry_index);
+						  }
+		));
+}
+
+static void
+vl_api_nsh_entry_dump_t_handler (vl_api_nsh_entry_dump_t * mp)
+{
+  unix_shared_memory_queue_t *q;
+  nsh_main_t *nm = &nsh_main;
+  nsh_entry_t *t;
+  u32 entry_index;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    {
+      return;
+    }
+
+  entry_index = ntohl (mp->entry_index);
+
+  if (~0 == entry_index)
+    {
+      pool_foreach (t, nm->nsh_entries, (
+					  {
+					  send_nsh_entry_details (t, q,
+								  mp->context);
+					  }
+		    ));
+    }
+  else
+    {
+      if (entry_index >= vec_len (nm->nsh_entries))
+	{
+	  return;
+	}
+      t = &nm->nsh_entries[entry_index];
+      send_nsh_entry_details (t, q, mp->context);
+    }
+}
+
+static void
+setup_message_id_table (nsh_main_t * nm, api_main_t * am)
+{
+#define _(id,n,crc) \
+  vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + nm->msg_id_base);
+  foreach_vl_msg_name_crc_nsh;
+#undef _
+}
+
+/* Set up the API message handling tables */
+static clib_error_t *
+nsh_plugin_api_hookup (vlib_main_t * vm)
+{
+  nsh_main_t *nm __attribute__ ((unused)) = &nsh_main;
+#define _(N,n)                                                  \
+  vl_msg_api_set_handlers((VL_API_##N + nm->msg_id_base),	\
+			  #n,					\
+			  vl_api_##n##_t_handler,		\
+			  vl_noop_handler,			\
+			  vl_api_##n##_t_endian,		\
+			  vl_api_##n##_t_print,			\
+			  sizeof(vl_api_##n##_t), 1);
+  foreach_nsh_plugin_api_msg;
+#undef _
+
+  return 0;
+}
+
+clib_error_t *
+nsh_api_init (vlib_main_t * vm, nsh_main_t * nm)
+{
+  clib_error_t *error;
+  u8 *name;
+
+  name = format (0, "nsh_%08x%c", api_version, 0);
+
+  /* Set up the API */
+  nm->msg_id_base = vl_msg_api_get_msg_ids
+    ((char *) name, VL_MSG_FIRST_AVAILABLE);
+
+  error = nsh_plugin_api_hookup (vm);
+
+  /* Add our API messages to the global name_crc hash table */
+  setup_message_id_table (nm, &api_main);
+
+  vec_free (name);
+
+  return error;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */