NAT64: Input feature arc on virtual interface via interface RX DPO.

[vpp.git] / src / plugins / nat / nat64_cli.c

diff --git a/src/plugins/nat/nat64_cli.c b/src/plugins/nat/nat64_cli.c
index 4128eda..7fea6bb 100644 (file)
--- a/src/plugins/nat/nat64_cli.c
+++ b/src/plugins/nat/nat64_cli.c
@@ -680,10 +680,11 @@ nat64_add_del_prefix_command_fn (vlib_main_t * vm, unformat_input_t * input,
                                 vlib_cli_command_t * cmd)
 {
   nat64_main_t *nm = &nat64_main;
+  vnet_main_t *vnm = vnet_get_main ();
   clib_error_t *error = 0;
   unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_add = 1;
-  u32 vrf_id = 0;
+  u32 vrf_id = 0, sw_if_index = ~0;
   ip6_address_t prefix;
   u32 plen = 0;
   int rv;
@@ -704,6 +705,11 @@ nat64_add_del_prefix_command_fn (vlib_main_t * vm, unformat_input_t * input,
        ;
       else if (unformat (line_input, "del"))
        is_add = 0;
+      else
+       if (unformat
+           (line_input, "interface %U", unformat_vnet_sw_interface, vnm,
+            &sw_if_index))
+       ;
       else
        {
          error = clib_error_return (0, "unknown input: '%U'",
@@ -732,6 +738,42 @@ nat64_add_del_prefix_command_fn (vlib_main_t * vm, unformat_input_t * input,
       break;
     }
 
+  /*
+   * Add RX interface route, whenNAT isn't running on the real input
+   * interface
+   */
+  if (sw_if_index != ~0)
+    {
+      u32 fib_index;
+      fib_prefix_t fibpfx = {
+       .fp_len = plen,
+       .fp_proto = FIB_PROTOCOL_IP6,
+       .fp_addr = {.ip6 = prefix}
+      };
+
+      if (is_add)
+       {
+         fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6,
+                                                        vrf_id,
+                                                        FIB_SOURCE_PLUGIN_HI);
+         fib_table_entry_update_one_path (fib_index, &fibpfx,
+                                          FIB_SOURCE_PLUGIN_HI,
+                                          FIB_ENTRY_FLAG_NONE, DPO_PROTO_IP6,
+                                          NULL, sw_if_index, ~0, 0, NULL,
+                                          FIB_ROUTE_PATH_INTF_RX);
+       }
+      else
+       {
+         fib_index = fib_table_find (FIB_PROTOCOL_IP6, vrf_id);
+         fib_table_entry_path_remove (fib_index, &fibpfx,
+                                      FIB_SOURCE_PLUGIN_HI, DPO_PROTO_IP6,
+                                      NULL, sw_if_index, ~0, 1,
+                                      FIB_ROUTE_PATH_INTF_RX);
+         fib_table_unlock (fib_index, FIB_PROTOCOL_IP6,
+                           FIB_SOURCE_PLUGIN_HI);
+       }
+    }
+
 done:
   unformat_free (line_input);
 
@@ -954,7 +996,7 @@ VLIB_CLI_COMMAND (show_nat64_st_command, static) = {
 VLIB_CLI_COMMAND (nat64_add_del_prefix_command, static) = {
   .path = "nat64 add prefix",
   .short_help = "nat64 add prefix <ip6-prefix>/<plen> [tenant-vrf <vrf-id>] "
-                "[del]",
+                "[del] [interface <interface]",
   .function = nat64_add_del_prefix_command_fn,
 };