nat: move dslite to separate sub-plugin

Type: refactor
Change-Id: If3d9f16f3a06c10b354f1eef674e8db5f3c44de7
Signed-off-by: Ole Troan <ot@cisco.com>

1 files changed, 177 insertions, 0 deletions

diff --git a/src/plugins/nat/dslite/dslite_api.c b/src/plugins/nat/dslite/dslite_api.c
new file mode 100644
index 00000000000..420e8212ad9
--- /dev/null
+++ b/src/plugins/nat/dslite/dslite_api.c
@@ -0,0 +1,177 @@
+/*
+ *------------------------------------------------------------------
+ * dslite_api.c - DS-Lite 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/ip/ip_types_api.h>
+#include <nat/dslite/dslite.h>
+#include <nat/dslite/dslite.api_enum.h>
+#include <nat/dslite/dslite.api_types.h>
+#include <vnet/ip/ip.h>
+#include <vnet/fib/fib_table.h>
+#include <vlibmemory/api.h>
+
+#define REPLY_MSG_ID_BASE dm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+vl_api_dslite_set_aftr_addr_t_handler (vl_api_dslite_set_aftr_addr_t * mp)
+{
+  vl_api_dslite_set_aftr_addr_reply_t *rmp;
+  dslite_main_t *dm = &dslite_main;
+  int rv = 0;
+  ip6_address_t ip6_addr;
+  ip4_address_t ip4_addr;
+
+  memcpy (&ip6_addr.as_u8, mp->ip6_addr, 16);
+  memcpy (&ip4_addr.as_u8, mp->ip4_addr, 4);
+
+  rv = dslite_set_aftr_ip6_addr (dm, &ip6_addr);
+  if (rv == 0)
+    rv = dslite_set_aftr_ip4_addr (dm, &ip4_addr);
+
+  REPLY_MACRO (VL_API_DSLITE_SET_AFTR_ADDR_REPLY);
+}
+
+static void
+vl_api_dslite_get_aftr_addr_t_handler (vl_api_dslite_get_aftr_addr_t * mp)
+{
+  vl_api_dslite_get_aftr_addr_reply_t *rmp;
+  dslite_main_t *dm = &dslite_main;
+  int rv = 0;
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_DSLITE_GET_AFTR_ADDR_REPLY,
+  ({
+    memcpy (rmp->ip4_addr, &dm->aftr_ip4_addr.as_u8, 4);
+    memcpy (rmp->ip6_addr, &dm->aftr_ip6_addr.as_u8, 16);
+  }))
+  /* *INDENT-ON* */
+}
+
+static void
+vl_api_dslite_set_b4_addr_t_handler (vl_api_dslite_set_b4_addr_t * mp)
+{
+  vl_api_dslite_set_b4_addr_reply_t *rmp;
+  dslite_main_t *dm = &dslite_main;
+  int rv = 0;
+  ip6_address_t ip6_addr;
+  ip4_address_t ip4_addr;
+
+  memcpy (&ip6_addr.as_u8, mp->ip6_addr, 16);
+  memcpy (&ip4_addr.as_u8, mp->ip4_addr, 4);
+
+  rv = dslite_set_b4_ip6_addr (dm, &ip6_addr);
+  if (rv == 0)
+    rv = dslite_set_b4_ip4_addr (dm, &ip4_addr);
+
+  REPLY_MACRO (VL_API_DSLITE_SET_B4_ADDR_REPLY);
+}
+
+static void
+vl_api_dslite_get_b4_addr_t_handler (vl_api_dslite_get_b4_addr_t * mp)
+{
+  vl_api_dslite_get_b4_addr_reply_t *rmp;
+  dslite_main_t *dm = &dslite_main;
+  int rv = 0;
+
+  /* *INDENT-OFF* */
+  REPLY_MACRO2 (VL_API_DSLITE_GET_B4_ADDR_REPLY,
+  ({
+    memcpy (rmp->ip4_addr, &dm->b4_ip4_addr.as_u8, 4);
+    memcpy (rmp->ip6_addr, &dm->b4_ip6_addr.as_u8, 16);
+  }))
+  /* *INDENT-ON* */
+}
+
+static void
+  vl_api_dslite_add_del_pool_addr_range_t_handler
+  (vl_api_dslite_add_del_pool_addr_range_t * mp)
+{
+  vl_api_dslite_add_del_pool_addr_range_reply_t *rmp;
+  dslite_main_t *dm = &dslite_main;
+  int rv = 0;
+  ip4_address_t this_addr;
+  u32 start_host_order, end_host_order;
+  int count;
+  u32 *tmp;
+
+  tmp = (u32 *) mp->start_addr;
+  start_host_order = clib_host_to_net_u32 (tmp[0]);
+  tmp = (u32 *) mp->end_addr;
+  end_host_order = clib_host_to_net_u32 (tmp[0]);
+
+  // TODO:
+  // end_host_order < start_host_order
+
+  count = (end_host_order - start_host_order) + 1;
+  memcpy (&this_addr.as_u8, mp->start_addr, 4);
+
+  rv = nat_add_del_ip4_pool_addrs (&dm->pool, this_addr, count, mp->is_add, 0);
+
+  REPLY_MACRO (VL_API_DSLITE_ADD_DEL_POOL_ADDR_RANGE_REPLY);
+}
+
+static void
+send_dslite_address_details (nat_ip4_pool_addr_t * a,
+			     vl_api_registration_t * reg, u32 context)
+{
+  dslite_main_t *dm = &dslite_main;
+  vl_api_dslite_address_details_t *rmp;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+
+  clib_memset (rmp, 0, sizeof (*rmp));
+
+  rmp->_vl_msg_id = ntohs (VL_API_DSLITE_ADDRESS_DETAILS + dm->msg_id_base);
+  clib_memcpy (rmp->ip_address, &(a->addr), 4);
+  rmp->context = context;
+
+  vl_api_send_msg (reg, (u8 *) rmp);
+}
+
+static void
+vl_api_dslite_address_dump_t_handler (vl_api_dslite_address_dump_t * mp)
+{
+  vl_api_registration_t *reg;
+  dslite_main_t *dm = &dslite_main;
+  nat_ip4_pool_addr_t *a;
+
+  reg = vl_api_client_index_to_registration (mp->client_index);
+  if (!reg)
+    return;
+
+  /* *INDENT-OFF* */
+  vec_foreach (a, dm->pool.pool_addr)
+    {
+      send_dslite_address_details (a, reg, mp->context);
+    }
+  /* *INDENT-ON* */
+}
+
+/* API definitions */
+#include <vnet/format_fns.h>
+#include <nat/dslite/dslite.api.c>
+
+/* Set up the API message handling tables */
+clib_error_t *
+dslite_api_hookup (vlib_main_t * vm)
+{
+  dslite_main_t *dm = &dslite_main;
+
+  dm->msg_id_base = setup_message_id_table ();
+  return 0;
+}