nat: nat66 to plugin

Type: refactor
Change-Id: I8c1f0c02a4522c1f9e461ddadd59938579ec00c6
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 174 insertions, 0 deletions

diff --git a/src/plugins/nat/nat66/nat66_api.c b/src/plugins/nat/nat66/nat66_api.c
new file mode 100644
index 00000000000..2a2b3cc07ad
--- /dev/null
+++ b/src/plugins/nat/nat66/nat66_api.c
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2020 Cisco and/or its affiliates.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vlibmemory/api.h>
+#include <nat/nat66/nat66.h>
+#include <nat/nat66/nat66.api_enum.h>
+#include <nat/nat66/nat66.api_types.h>
+#include <vnet/fib/fib_table.h>
+
+#define REPLY_MSG_ID_BASE nm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+/*************/
+/*** NAT66 ***/
+/*************/
+
+static void
+vl_api_nat66_add_del_interface_t_handler (vl_api_nat66_add_del_interface_t *
+					  mp)
+{
+  nat66_main_t *nm = &nat66_main;
+  vl_api_nat66_add_del_interface_reply_t *rmp;
+  int rv = 0;
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  rv =
+    nat66_interface_add_del (ntohl (mp->sw_if_index),
+			     mp->flags & NAT_IS_INSIDE, mp->is_add);
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_NAT66_ADD_DEL_INTERFACE_REPLY);
+}
+
+static void
+  vl_api_nat66_add_del_static_mapping_t_handler
+  (vl_api_nat66_add_del_static_mapping_t * mp)
+{
+  nat66_main_t *nm = &nat66_main;
+  vl_api_nat66_add_del_static_mapping_reply_t *rmp;
+  ip6_address_t l_addr, e_addr;
+  int rv = 0;
+
+  memcpy (&l_addr.as_u8, mp->local_ip_address, 16);
+  memcpy (&e_addr.as_u8, mp->external_ip_address, 16);
+
+  rv =
+    nat66_static_mapping_add_del (&l_addr, &e_addr,
+				  clib_net_to_host_u32 (mp->vrf_id),
+				  mp->is_add);
+
+  REPLY_MACRO (VL_API_NAT66_ADD_DEL_STATIC_MAPPING_REPLY);
+}
+
+typedef struct nat66_api_walk_ctx_t_
+{
+  vl_api_registration_t *rp;
+  u32 context;
+} nat66_api_walk_ctx_t;
+
+static int
+nat66_api_interface_walk (nat66_interface_t * i, void *arg)
+{
+  vl_api_nat66_interface_details_t *rmp;
+  nat66_main_t *nm = &nat66_main;
+  nat66_api_walk_ctx_t *ctx = arg;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  clib_memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT66_INTERFACE_DETAILS + nm->msg_id_base);
+  rmp->sw_if_index = ntohl (i->sw_if_index);
+  if (nat66_interface_is_inside (i))
+    rmp->flags |= NAT_IS_INSIDE;
+  rmp->context = ctx->context;
+
+  vl_api_send_msg (ctx->rp, (u8 *) rmp);
+
+  return 0;
+}
+
+static void
+vl_api_nat66_interface_dump_t_handler (vl_api_nat66_interface_dump_t * mp)
+{
+  vl_api_registration_t *rp;
+
+  rp = vl_api_client_index_to_registration (mp->client_index);
+  if (rp == 0)
+    return;
+
+  nat66_api_walk_ctx_t ctx = {
+    .rp = rp,
+    .context = mp->context,
+  };
+
+  nat66_interfaces_walk (nat66_api_interface_walk, &ctx);
+}
+
+static int
+nat66_api_static_mapping_walk (nat66_static_mapping_t * m, void *arg)
+{
+  vl_api_nat66_static_mapping_details_t *rmp;
+  nat66_main_t *nm = &nat66_main;
+  nat66_api_walk_ctx_t *ctx = arg;
+  fib_table_t *fib;
+  vlib_counter_t vc;
+
+  fib = fib_table_get (m->fib_index, FIB_PROTOCOL_IP6);
+  if (!fib)
+    return -1;
+
+  vlib_get_combined_counter (&nm->session_counters, m - nm->sm, &vc);
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  clib_memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id =
+    ntohs (VL_API_NAT66_STATIC_MAPPING_DETAILS + nm->msg_id_base);
+  clib_memcpy (rmp->local_ip_address, &m->l_addr, 16);
+  clib_memcpy (rmp->external_ip_address, &m->e_addr, 16);
+  rmp->vrf_id = ntohl (fib->ft_table_id);
+  rmp->total_bytes = clib_host_to_net_u64 (vc.bytes);
+  rmp->total_pkts = clib_host_to_net_u64 (vc.packets);
+  rmp->context = ctx->context;
+
+  vl_api_send_msg (ctx->rp, (u8 *) rmp);
+
+  return 0;
+}
+
+static void
+vl_api_nat66_static_mapping_dump_t_handler (vl_api_nat66_static_mapping_dump_t
+					    * mp)
+{
+  vl_api_registration_t *rp;
+
+  rp = vl_api_client_index_to_registration (mp->client_index);
+  if (rp == 0)
+    return;
+
+  nat66_api_walk_ctx_t ctx = {
+    .rp = rp,
+    .context = mp->context,
+  };
+
+  nat66_static_mappings_walk (nat66_api_static_mapping_walk, &ctx);
+}
+
+/* API definitions */
+#include <vnet/format_fns.h>
+#include <nat/nat66/nat66.api.c>
+
+/* Set up the API message handling tables */
+clib_error_t *
+nat66_plugin_api_hookup (vlib_main_t * vm)
+{
+  nat66_main_t *nm = &nat66_main;
+
+  nm->msg_id_base = setup_message_id_table ();
+
+  return 0;
+}