nat: move nat64 to a subfeature

Type: refactor

Change-Id: I3b9e17164647d2019b1f40cffeed63393345219e
Signed-off-by: Filip Varga <fivarga@cisco.com>

1 files changed, 0 insertions, 728 deletions

diff --git a/src/plugins/nat/nat64_db.c b/src/plugins/nat/nat64_db.c
deleted file mode 100644
index 6e4973b249a..00000000000
--- a/src/plugins/nat/nat64_db.c
+++ /dev/null
@@ -1,728 +0,0 @@
-/*
- * Copyright (c) 2017 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
- * @brief NAT64 DB
- */
-#include <nat/nat64_db.h>
-#include <nat/nat_ipfix_logging.h>
-#include <nat/nat_inlines.h>
-#include <nat/nat_syslog.h>
-#include <vnet/fib/fib_table.h>
-
-int
-nat64_db_init (nat64_db_t * db, u32 bib_buckets, uword bib_memory_size,
-	       u32 st_buckets, uword st_memory_size,
-	       nat64_db_free_addr_port_function_t free_addr_port_cb)
-{
-  clib_bihash_init_24_8 (&db->bib.in2out, "bib-in2out", bib_buckets,
-			 bib_memory_size);
-
-  clib_bihash_init_24_8 (&db->bib.out2in, "bib-out2in", bib_buckets,
-			 bib_memory_size);
-
-  clib_bihash_init_48_8 (&db->st.in2out, "st-in2out", st_buckets,
-			 st_memory_size);
-
-  clib_bihash_init_48_8 (&db->st.out2in, "st-out2in", st_buckets,
-			 st_memory_size);
-
-  db->free_addr_port_cb = free_addr_port_cb;
-  db->bib.limit = 10 * bib_buckets;
-  db->bib.bib_entries_num = 0;
-  db->st.limit = 10 * st_buckets;
-  db->st.st_entries_num = 0;
-  db->addr_free = 0;
-
-  return 0;
-}
-
-nat64_db_bib_entry_t *
-nat64_db_bib_entry_create (u32 thread_index, nat64_db_t * db,
-			   ip6_address_t * in_addr,
-			   ip4_address_t * out_addr, u16 in_port,
-			   u16 out_port, u32 fib_index, u8 proto,
-			   u8 is_static)
-{
-  nat64_db_bib_entry_t *bibe;
-  nat64_db_bib_entry_key_t bibe_key;
-  clib_bihash_kv_24_8_t kv;
-  fib_table_t *fib;
-
-  if (db->bib.bib_entries_num >= db->bib.limit)
-    {
-      db->free_addr_port_cb (db, out_addr, out_port, proto);
-      nat_ipfix_logging_max_bibs (thread_index, db->bib.limit);
-      return 0;
-    }
-
-  /* create pool entry */
-  switch (ip_proto_to_nat_proto (proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      pool_get (db->bib._##n##_bib, bibe); \
-      kv.value = bibe - db->bib._##n##_bib; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      pool_get (db->bib._unk_proto_bib, bibe);
-      kv.value = bibe - db->bib._unk_proto_bib;
-      break;
-    }
-
-  db->bib.bib_entries_num++;
-
-  clib_memset (bibe, 0, sizeof (*bibe));
-  bibe->in_addr.as_u64[0] = in_addr->as_u64[0];
-  bibe->in_addr.as_u64[1] = in_addr->as_u64[1];
-  bibe->in_port = in_port;
-  bibe->out_addr.as_u32 = out_addr->as_u32;
-  bibe->out_port = out_port;
-  bibe->fib_index = fib_index;
-  bibe->proto = proto;
-  bibe->is_static = is_static;
-
-  /* create hash lookup */
-  bibe_key.addr.as_u64[0] = bibe->in_addr.as_u64[0];
-  bibe_key.addr.as_u64[1] = bibe->in_addr.as_u64[1];
-  bibe_key.fib_index = bibe->fib_index;
-  bibe_key.port = bibe->in_port;
-  bibe_key.proto = bibe->proto;
-  bibe_key.rsvd = 0;
-  kv.key[0] = bibe_key.as_u64[0];
-  kv.key[1] = bibe_key.as_u64[1];
-  kv.key[2] = bibe_key.as_u64[2];
-  clib_bihash_add_del_24_8 (&db->bib.in2out, &kv, 1);
-
-  clib_memset (&bibe_key.addr, 0, sizeof (bibe_key.addr));
-  bibe_key.addr.ip4.as_u32 = bibe->out_addr.as_u32;
-  bibe_key.fib_index = 0;
-  bibe_key.port = bibe->out_port;
-  kv.key[0] = bibe_key.as_u64[0];
-  kv.key[1] = bibe_key.as_u64[1];
-  kv.key[2] = bibe_key.as_u64[2];
-  clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 1);
-
-  fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
-  nat_ipfix_logging_nat64_bib (thread_index, in_addr, out_addr, proto,
-			       in_port, out_port, fib->ft_table_id, 1);
-  return bibe;
-}
-
-void
-nat64_db_bib_entry_free (u32 thread_index, nat64_db_t * db,
-			 nat64_db_bib_entry_t * bibe)
-{
-  nat64_db_bib_entry_key_t bibe_key;
-  clib_bihash_kv_24_8_t kv;
-  nat64_db_bib_entry_t *bib;
-  u32 *ste_to_be_free = 0, *ste_index, bibe_index;
-  nat64_db_st_entry_t *st, *ste;
-  fib_table_t *fib;
-
-  switch (ip_proto_to_nat_proto (bibe->proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      bib = db->bib._##n##_bib; \
-      st = db->st._##n##_st; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      bib = db->bib._unk_proto_bib;
-      st = db->st._unk_proto_st;
-      break;
-    }
-
-  db->bib.bib_entries_num--;
-
-  bibe_index = bibe - bib;
-
-  /* delete ST entries for static BIB entry */
-  if (bibe->is_static)
-    {
-      pool_foreach (ste, st, (
-			       {
-			       if (ste->bibe_index == bibe_index)
-			       vec_add1 (ste_to_be_free, ste - st);}
-		    ));
-      vec_foreach (ste_index, ste_to_be_free)
-	nat64_db_st_entry_free (thread_index, db,
-				pool_elt_at_index (st, ste_index[0]));
-      vec_free (ste_to_be_free);
-    }
-
-  /* delete hash lookup */
-  bibe_key.addr.as_u64[0] = bibe->in_addr.as_u64[0];
-  bibe_key.addr.as_u64[1] = bibe->in_addr.as_u64[1];
-  bibe_key.fib_index = bibe->fib_index;
-  bibe_key.port = bibe->in_port;
-  bibe_key.proto = bibe->proto;
-  bibe_key.rsvd = 0;
-  kv.key[0] = bibe_key.as_u64[0];
-  kv.key[1] = bibe_key.as_u64[1];
-  kv.key[2] = bibe_key.as_u64[2];
-  clib_bihash_add_del_24_8 (&db->bib.in2out, &kv, 0);
-
-  clib_memset (&bibe_key.addr, 0, sizeof (bibe_key.addr));
-  bibe_key.addr.ip4.as_u32 = bibe->out_addr.as_u32;
-  bibe_key.fib_index = 0;
-  bibe_key.port = bibe->out_port;
-  kv.key[0] = bibe_key.as_u64[0];
-  kv.key[1] = bibe_key.as_u64[1];
-  kv.key[2] = bibe_key.as_u64[2];
-  clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 0);
-
-  if (!db->addr_free)
-    db->free_addr_port_cb (db, &bibe->out_addr, bibe->out_port, bibe->proto);
-
-  fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
-  nat_ipfix_logging_nat64_bib (thread_index, &bibe->in_addr, &bibe->out_addr,
-			       bibe->proto, bibe->in_port, bibe->out_port,
-			       fib->ft_table_id, 0);
-
-  /* delete from pool */
-  pool_put (bib, bibe);
-
-}
-
-nat64_db_bib_entry_t *
-nat64_db_bib_entry_find (nat64_db_t * db, ip46_address_t * addr, u16 port,
-			 u8 proto, u32 fib_index, u8 is_ip6)
-{
-  nat64_db_bib_entry_t *bibe = 0;
-  nat64_db_bib_entry_key_t bibe_key;
-  clib_bihash_kv_24_8_t kv, value;
-  nat64_db_bib_entry_t *bib;
-
-  switch (ip_proto_to_nat_proto (proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      bib = db->bib._##n##_bib; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      bib = db->bib._unk_proto_bib;
-      break;
-    }
-
-  bibe_key.addr.as_u64[0] = addr->as_u64[0];
-  bibe_key.addr.as_u64[1] = addr->as_u64[1];
-  bibe_key.fib_index = fib_index;
-  bibe_key.port = port;
-  bibe_key.proto = proto;
-  bibe_key.rsvd = 0;
-
-  kv.key[0] = bibe_key.as_u64[0];
-  kv.key[1] = bibe_key.as_u64[1];
-  kv.key[2] = bibe_key.as_u64[2];
-
-  if (!clib_bihash_search_24_8
-      (is_ip6 ? &db->bib.in2out : &db->bib.out2in, &kv, &value))
-    bibe = pool_elt_at_index (bib, value.value);
-
-  return bibe;
-}
-
-void
-nat64_db_bib_walk (nat64_db_t * db, u8 proto,
-		   nat64_db_bib_walk_fn_t fn, void *ctx)
-{
-  nat64_db_bib_entry_t *bib, *bibe;
-
-  if (proto == 255)
-    {
-    /* *INDENT-OFF* */
-    #define _(N, i, n, s) \
-      bib = db->bib._##n##_bib; \
-      pool_foreach (bibe, bib, ({ \
-        if (fn (bibe, ctx)) \
-          return; \
-      }));
-      foreach_nat_protocol
-    #undef _
-      bib = db->bib._unk_proto_bib;
-      pool_foreach (bibe, bib, ({
-        if (fn (bibe, ctx))
-          return;
-      }));
-    /* *INDENT-ON* */
-    }
-  else
-    {
-      switch (ip_proto_to_nat_proto (proto))
-	{
-    /* *INDENT-OFF* */
-    #define _(N, i, n, s) \
-        case NAT_PROTOCOL_##N: \
-          bib = db->bib._##n##_bib; \
-          break;
-          foreach_nat_protocol
-    #undef _
-    /* *INDENT-ON* */
-	default:
-	  bib = db->bib._unk_proto_bib;
-	  break;
-	}
-
-      /* *INDENT-OFF* */
-      pool_foreach (bibe, bib,
-      ({
-        if (fn (bibe, ctx))
-          return;
-      }));
-      /* *INDENT-ON* */
-    }
-}
-
-nat64_db_bib_entry_t *
-nat64_db_bib_entry_by_index (nat64_db_t * db, u8 proto, u32 bibe_index)
-{
-  nat64_db_bib_entry_t *bib;
-
-  switch (ip_proto_to_nat_proto (proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      bib = db->bib._##n##_bib; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      bib = db->bib._unk_proto_bib;
-      break;
-    }
-
-  return pool_elt_at_index (bib, bibe_index);
-}
-
-void
-nat64_db_st_walk (nat64_db_t * db, u8 proto,
-		  nat64_db_st_walk_fn_t fn, void *ctx)
-{
-  nat64_db_st_entry_t *st, *ste;
-
-  if (proto == 255)
-    {
-    /* *INDENT-OFF* */
-    #define _(N, i, n, s) \
-      st = db->st._##n##_st; \
-      pool_foreach (ste, st, ({ \
-        if (fn (ste, ctx)) \
-          return; \
-      }));
-      foreach_nat_protocol
-    #undef _
-      st = db->st._unk_proto_st;
-      pool_foreach (ste, st, ({
-        if (fn (ste, ctx))
-          return;
-      }));
-    /* *INDENT-ON* */
-    }
-  else
-    {
-      switch (ip_proto_to_nat_proto (proto))
-	{
-    /* *INDENT-OFF* */
-    #define _(N, i, n, s) \
-        case NAT_PROTOCOL_##N: \
-          st = db->st._##n##_st; \
-          break;
-          foreach_nat_protocol
-    #undef _
-    /* *INDENT-ON* */
-	default:
-	  st = db->st._unk_proto_st;
-	  break;
-	}
-
-      /* *INDENT-OFF* */
-      pool_foreach (ste, st,
-      ({
-        if (fn (ste, ctx))
-          return;
-      }));
-      /* *INDENT-ON* */
-    }
-}
-
-nat64_db_st_entry_t *
-nat64_db_st_entry_create (u32 thread_index, nat64_db_t * db,
-			  nat64_db_bib_entry_t * bibe,
-			  ip6_address_t * in_r_addr,
-			  ip4_address_t * out_r_addr, u16 r_port)
-{
-  nat64_db_st_entry_t *ste;
-  nat64_db_bib_entry_t *bib;
-  nat64_db_st_entry_key_t ste_key;
-  clib_bihash_kv_48_8_t kv;
-  fib_table_t *fib;
-
-  if (db->st.st_entries_num >= db->st.limit)
-    {
-      nat_ipfix_logging_max_sessions (thread_index, db->st.limit);
-      return 0;
-    }
-
-  /* create pool entry */
-  switch (ip_proto_to_nat_proto (bibe->proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      pool_get (db->st._##n##_st, ste); \
-      kv.value = ste - db->st._##n##_st; \
-      bib = db->bib._##n##_bib; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      pool_get (db->st._unk_proto_st, ste);
-      kv.value = ste - db->st._unk_proto_st;
-      bib = db->bib._unk_proto_bib;
-      break;
-    }
-
-  db->st.st_entries_num++;
-
-  clib_memset (ste, 0, sizeof (*ste));
-  ste->in_r_addr.as_u64[0] = in_r_addr->as_u64[0];
-  ste->in_r_addr.as_u64[1] = in_r_addr->as_u64[1];
-  ste->out_r_addr.as_u32 = out_r_addr->as_u32;
-  ste->r_port = r_port;
-  ste->bibe_index = bibe - bib;
-  ste->proto = bibe->proto;
-
-  /* increment session number for BIB entry */
-  bibe->ses_num++;
-
-  /* create hash lookup */
-  clib_memset (&ste_key, 0, sizeof (ste_key));
-  ste_key.l_addr.as_u64[0] = bibe->in_addr.as_u64[0];
-  ste_key.l_addr.as_u64[1] = bibe->in_addr.as_u64[1];
-  ste_key.r_addr.as_u64[0] = ste->in_r_addr.as_u64[0];
-  ste_key.r_addr.as_u64[1] = ste->in_r_addr.as_u64[1];
-  ste_key.fib_index = bibe->fib_index;
-  ste_key.l_port = bibe->in_port;
-  ste_key.r_port = ste->r_port;
-  ste_key.proto = ste->proto;
-  kv.key[0] = ste_key.as_u64[0];
-  kv.key[1] = ste_key.as_u64[1];
-  kv.key[2] = ste_key.as_u64[2];
-  kv.key[3] = ste_key.as_u64[3];
-  kv.key[4] = ste_key.as_u64[4];
-  kv.key[5] = ste_key.as_u64[5];
-  clib_bihash_add_del_48_8 (&db->st.in2out, &kv, 1);
-
-  clib_memset (&ste_key, 0, sizeof (ste_key));
-  ste_key.l_addr.ip4.as_u32 = bibe->out_addr.as_u32;
-  ste_key.r_addr.ip4.as_u32 = ste->out_r_addr.as_u32;
-  ste_key.l_port = bibe->out_port;
-  ste_key.r_port = ste->r_port;
-  ste_key.proto = ste->proto;
-  kv.key[0] = ste_key.as_u64[0];
-  kv.key[1] = ste_key.as_u64[1];
-  kv.key[2] = ste_key.as_u64[2];
-  kv.key[3] = ste_key.as_u64[3];
-  kv.key[4] = ste_key.as_u64[4];
-  kv.key[5] = ste_key.as_u64[5];
-  clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 1);
-
-  fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
-  nat_ipfix_logging_nat64_session (thread_index, &bibe->in_addr,
-				   &bibe->out_addr, bibe->proto,
-				   bibe->in_port, bibe->out_port,
-				   &ste->in_r_addr, &ste->out_r_addr,
-				   ste->r_port, ste->r_port, fib->ft_table_id,
-				   1);
-  nat_syslog_nat64_sadd (bibe->fib_index, &bibe->in_addr, bibe->in_port,
-			 &bibe->out_addr, bibe->out_port, &ste->out_r_addr,
-			 ste->r_port, bibe->proto);
-  return ste;
-}
-
-void
-nat64_db_st_entry_free (u32 thread_index,
-			nat64_db_t * db, nat64_db_st_entry_t * ste)
-{
-  nat64_db_st_entry_t *st;
-  nat64_db_bib_entry_t *bib, *bibe;
-  nat64_db_st_entry_key_t ste_key;
-  clib_bihash_kv_48_8_t kv;
-  fib_table_t *fib;
-
-  switch (ip_proto_to_nat_proto (ste->proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      st = db->st._##n##_st; \
-      bib = db->bib._##n##_bib; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      st = db->st._unk_proto_st;
-      bib = db->bib._unk_proto_bib;
-      break;
-    }
-
-  bibe = pool_elt_at_index (bib, ste->bibe_index);
-
-  db->st.st_entries_num--;
-
-  /* delete hash lookup */
-  clib_memset (&ste_key, 0, sizeof (ste_key));
-  ste_key.l_addr.as_u64[0] = bibe->in_addr.as_u64[0];
-  ste_key.l_addr.as_u64[1] = bibe->in_addr.as_u64[1];
-  ste_key.r_addr.as_u64[0] = ste->in_r_addr.as_u64[0];
-  ste_key.r_addr.as_u64[1] = ste->in_r_addr.as_u64[1];
-  ste_key.fib_index = bibe->fib_index;
-  ste_key.l_port = bibe->in_port;
-  ste_key.r_port = ste->r_port;
-  ste_key.proto = ste->proto;
-  kv.key[0] = ste_key.as_u64[0];
-  kv.key[1] = ste_key.as_u64[1];
-  kv.key[2] = ste_key.as_u64[2];
-  kv.key[3] = ste_key.as_u64[3];
-  kv.key[4] = ste_key.as_u64[4];
-  kv.key[5] = ste_key.as_u64[5];
-  clib_bihash_add_del_48_8 (&db->st.in2out, &kv, 0);
-
-  clib_memset (&ste_key, 0, sizeof (ste_key));
-  ste_key.l_addr.ip4.as_u32 = bibe->out_addr.as_u32;
-  ste_key.r_addr.ip4.as_u32 = ste->out_r_addr.as_u32;
-  ste_key.l_port = bibe->out_port;
-  ste_key.r_port = ste->r_port;
-  ste_key.proto = ste->proto;
-  kv.key[0] = ste_key.as_u64[0];
-  kv.key[1] = ste_key.as_u64[1];
-  kv.key[2] = ste_key.as_u64[2];
-  kv.key[3] = ste_key.as_u64[3];
-  kv.key[4] = ste_key.as_u64[4];
-  kv.key[5] = ste_key.as_u64[5];
-  clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 0);
-
-  fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6);
-  nat_ipfix_logging_nat64_session (thread_index, &bibe->in_addr,
-				   &bibe->out_addr, bibe->proto,
-				   bibe->in_port, bibe->out_port,
-				   &ste->in_r_addr, &ste->out_r_addr,
-				   ste->r_port, ste->r_port, fib->ft_table_id,
-				   0);
-  nat_syslog_nat64_sdel (bibe->fib_index, &bibe->in_addr, bibe->in_port,
-			 &bibe->out_addr, bibe->out_port, &ste->out_r_addr,
-			 ste->r_port, bibe->proto);
-
-  /* delete from pool */
-  pool_put (st, ste);
-
-  /* decrement session number for BIB entry */
-  bibe->ses_num--;
-
-  /* delete BIB entry if last session and dynamic */
-  if (!bibe->is_static && !bibe->ses_num)
-    nat64_db_bib_entry_free (thread_index, db, bibe);
-}
-
-nat64_db_st_entry_t *
-nat64_db_st_entry_find (nat64_db_t * db, ip46_address_t * l_addr,
-			ip46_address_t * r_addr, u16 l_port, u16 r_port,
-			u8 proto, u32 fib_index, u8 is_ip6)
-{
-  nat64_db_st_entry_t *ste = 0;
-  nat64_db_st_entry_t *st;
-  nat64_db_st_entry_key_t ste_key;
-  clib_bihash_kv_48_8_t kv, value;
-
-  switch (ip_proto_to_nat_proto (proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      st = db->st._##n##_st; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      st = db->st._unk_proto_st;
-      break;
-    }
-
-  clib_memset (&ste_key, 0, sizeof (ste_key));
-  ste_key.l_addr.as_u64[0] = l_addr->as_u64[0];
-  ste_key.l_addr.as_u64[1] = l_addr->as_u64[1];
-  ste_key.r_addr.as_u64[0] = r_addr->as_u64[0];
-  ste_key.r_addr.as_u64[1] = r_addr->as_u64[1];
-  ste_key.fib_index = fib_index;
-  ste_key.l_port = l_port;
-  ste_key.r_port = r_port;
-  ste_key.proto = proto;
-  kv.key[0] = ste_key.as_u64[0];
-  kv.key[1] = ste_key.as_u64[1];
-  kv.key[2] = ste_key.as_u64[2];
-  kv.key[3] = ste_key.as_u64[3];
-  kv.key[4] = ste_key.as_u64[4];
-  kv.key[5] = ste_key.as_u64[5];
-
-  if (!clib_bihash_search_48_8
-      (is_ip6 ? &db->st.in2out : &db->st.out2in, &kv, &value))
-    ste = pool_elt_at_index (st, value.value);
-
-  return ste;
-}
-
-u32
-nat64_db_st_entry_get_index (nat64_db_t * db, nat64_db_st_entry_t * ste)
-{
-  nat64_db_st_entry_t *st;
-
-  switch (ip_proto_to_nat_proto (ste->proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      st = db->st._##n##_st; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      st = db->st._unk_proto_st;
-      return (u32) ~ 0;
-    }
-
-  return ste - st;
-}
-
-nat64_db_st_entry_t *
-nat64_db_st_entry_by_index (nat64_db_t * db, u8 proto, u32 ste_index)
-{
-  nat64_db_st_entry_t *st;
-
-  switch (ip_proto_to_nat_proto (proto))
-    {
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-    case NAT_PROTOCOL_##N: \
-      st = db->st._##n##_st; \
-      break;
-      foreach_nat_protocol
-#undef _
-/* *INDENT-ON* */
-    default:
-      st = db->st._unk_proto_st;
-      break;
-    }
-
-  return pool_elt_at_index (st, ste_index);
-}
-
-void
-nad64_db_st_free_expired (u32 thread_index, nat64_db_t * db, u32 now)
-{
-  u32 *ste_to_be_free = 0, *ste_index;
-  nat64_db_st_entry_t *st, *ste;
-
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-  st = db->st._##n##_st; \
-  pool_foreach (ste, st, ({\
-    if (i == NAT_PROTOCOL_TCP && !ste->tcp_state) \
-      continue; \
-    if (ste->expire < now) \
-      vec_add1 (ste_to_be_free, ste - st); \
-  })); \
-  vec_foreach (ste_index, ste_to_be_free) \
-    nat64_db_st_entry_free (thread_index, db, \
-                            pool_elt_at_index(st, ste_index[0])); \
-  vec_free (ste_to_be_free); \
-  ste_to_be_free = 0;
-  foreach_nat_protocol
-#undef _
-  st = db->st._unk_proto_st;
-  pool_foreach (ste, st, ({
-    if (ste->expire < now)
-      vec_add1 (ste_to_be_free, ste - st);
-  }));
-  vec_foreach (ste_index, ste_to_be_free)
-    nat64_db_st_entry_free (thread_index, db,
-                            pool_elt_at_index(st, ste_index[0]));
-  vec_free (ste_to_be_free);
-/* *INDENT-ON* */
-}
-
-void
-nat64_db_free_out_addr (u32 thread_index,
-			nat64_db_t * db, ip4_address_t * out_addr)
-{
-  u32 *ste_to_be_free = 0, *ste_index;
-  nat64_db_st_entry_t *st, *ste;
-  nat64_db_bib_entry_t *bibe;
-
-  db->addr_free = 1;
-/* *INDENT-OFF* */
-#define _(N, i, n, s) \
-  st = db->st._##n##_st; \
-  pool_foreach (ste, st, ({ \
-    bibe = pool_elt_at_index (db->bib._##n##_bib, ste->bibe_index); \
-    if (bibe->out_addr.as_u32 == out_addr->as_u32) \
-      vec_add1 (ste_to_be_free, ste - st); \
-  })); \
-  vec_foreach (ste_index, ste_to_be_free) \
-    nat64_db_st_entry_free (thread_index, db, \
-                            pool_elt_at_index(st, ste_index[0])); \
-  vec_free (ste_to_be_free); \
-  ste_to_be_free = 0;
-  foreach_nat_protocol
-#undef _
-  st = db->st._unk_proto_st;
-  pool_foreach (ste, st, ({
-    bibe = pool_elt_at_index (db->bib._unk_proto_bib, ste->bibe_index);
-    if (bibe->out_addr.as_u32 == out_addr->as_u32)
-      vec_add1 (ste_to_be_free, ste - st);
-  }));
-  vec_foreach (ste_index, ste_to_be_free)
-    nat64_db_st_entry_free (thread_index, db,
-                            pool_elt_at_index(st, ste_index[0]));
-  vec_free (ste_to_be_free);
-  db->addr_free = 0;
-/* *INDENT-ON* */
-}
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */