NAT66 1:1 mapping (VPP-1108)

Support the 1:1 translation of source address for IPv6

Change-Id: I934d18e5ec508bf7422d796ee5f172b79c048011
Signed-off-by: Matus Fabian <matfabia@cisco.com>

1 files changed, 192 insertions, 1 deletions

diff --git a/src/plugins/nat/nat_api.c b/src/plugins/nat/nat_api.c
index 2fefb8b7c1b..433840e2b89 100644
--- a/src/plugins/nat/nat_api.c
+++ b/src/plugins/nat/nat_api.c
@@ -21,6 +21,7 @@
 #include <nat/nat.h>
 #include <nat/nat_det.h>
 #include <nat/nat64.h>
+#include <nat/nat66.h>
 #include <nat/dslite.h>
 #include <nat/nat_reass.h>
 #include <vlibapi/api.h>
@@ -2594,6 +2595,192 @@ static void *vl_api_dslite_add_del_pool_addr_range_t_print
 }
 
 
+/*************/
+/*** NAT66 ***/
+/*************/
+
+static void
+vl_api_nat66_add_del_interface_t_handler (vl_api_nat66_add_del_interface_t *
+					  mp)
+{
+  snat_main_t *sm = &snat_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->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_interface_t_print (vl_api_nat66_add_del_interface_t * mp,
+					void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat66_add_del_interface ");
+  s = format (s, "sw_if_index %d %s %s",
+	      clib_host_to_net_u32 (mp->sw_if_index),
+	      mp->is_inside ? "in" : "out", mp->is_add ? "" : "del");
+
+  FINISH;
+}
+
+static void
+  vl_api_nat66_add_del_static_mapping_t_handler
+  (vl_api_nat66_add_del_static_mapping_t * mp)
+{
+  snat_main_t *sm = &snat_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);
+}
+
+static void *vl_api_nat66_add_del_static_mapping_t_print
+  (vl_api_nat66_add_del_static_mapping_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat66_add_del_static_mapping ");
+  s = format (s, "local_ip_address %U external_ip_address %U vrf_id %d %s",
+	      format_ip6_address, mp->local_ip_address,
+	      format_ip6_address, mp->external_ip_address,
+	      clib_net_to_host_u32 (mp->vrf_id), mp->is_add ? "" : "del");
+
+  FINISH;
+}
+
+typedef struct nat66_api_walk_ctx_t_
+{
+  svm_queue_t *q;
+  u32 context;
+} nat66_api_walk_ctx_t;
+
+static int
+nat66_api_interface_walk (snat_interface_t * i, void *arg)
+{
+  vl_api_nat66_interface_details_t *rmp;
+  snat_main_t *sm = &snat_main;
+  nat66_api_walk_ctx_t *ctx = arg;
+
+  rmp = vl_msg_api_alloc (sizeof (*rmp));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id = ntohs (VL_API_NAT66_INTERFACE_DETAILS + sm->msg_id_base);
+  rmp->sw_if_index = ntohl (i->sw_if_index);
+  rmp->is_inside = nat_interface_is_inside (i);
+  rmp->context = ctx->context;
+
+  vl_msg_api_send_shmem (ctx->q, (u8 *) & rmp);
+
+  return 0;
+}
+
+static void
+vl_api_nat66_interface_dump_t_handler (vl_api_nat66_interface_dump_t * mp)
+{
+  svm_queue_t *q;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  nat66_api_walk_ctx_t ctx = {
+    .q = q,
+    .context = mp->context,
+  };
+
+  nat66_interfaces_walk (nat66_api_interface_walk, &ctx);
+}
+
+static void *
+vl_api_nat66_interface_dump_t_print (vl_api_nat66_interface_dump_t * mp,
+				     void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat66_interface_dump ");
+
+  FINISH;
+}
+
+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;
+  snat_main_t *sm = &snat_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));
+  memset (rmp, 0, sizeof (*rmp));
+  rmp->_vl_msg_id =
+    ntohs (VL_API_NAT66_STATIC_MAPPING_DETAILS + sm->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_msg_api_send_shmem (ctx->q, (u8 *) & rmp);
+
+  return 0;
+}
+
+static void
+vl_api_nat66_static_mapping_dump_t_handler (vl_api_nat66_static_mapping_dump_t
+					    * mp)
+{
+  svm_queue_t *q;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  if (q == 0)
+    return;
+
+  nat66_api_walk_ctx_t ctx = {
+    .q = q,
+    .context = mp->context,
+  };
+
+  nat66_static_mappings_walk (nat66_api_static_mapping_walk, &ctx);
+}
+
+static void *
+vl_api_nat66_static_mapping_dump_t_print (vl_api_nat66_static_mapping_dump_t *
+					  mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: nat66_static_mapping_dump ");
+
+  FINISH;
+}
+
+
 /* List of message types that this plugin understands */
 #define foreach_snat_plugin_api_msg                                     \
 _(NAT_CONTROL_PING, nat_control_ping)                                   \
@@ -2650,7 +2837,11 @@ _(DSLITE_ADD_DEL_POOL_ADDR_RANGE, dslite_add_del_pool_addr_range)       \
 _(DSLITE_SET_AFTR_ADDR, dslite_set_aftr_addr)                           \
 _(DSLITE_GET_AFTR_ADDR, dslite_get_aftr_addr)                           \
 _(DSLITE_SET_B4_ADDR, dslite_set_b4_addr)                               \
-_(DSLITE_GET_B4_ADDR, dslite_get_b4_addr)
+_(DSLITE_GET_B4_ADDR, dslite_get_b4_addr)                               \
+_(NAT66_ADD_DEL_INTERFACE, nat66_add_del_interface)                     \
+_(NAT66_INTERFACE_DUMP, nat66_interface_dump)                           \
+_(NAT66_ADD_DEL_STATIC_MAPPING, nat66_add_del_static_mapping)           \
+_(NAT66_STATIC_MAPPING_DUMP, nat66_static_mapping_dump)
 
 /* Set up the API message handling tables */
 static clib_error_t *