vnet/vnet/adj/adj_rewrite.c

   1 /*
   2  * Copyright (c) 2016 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #include <vnet/adj/adj.h>
  17 #include <vnet/adj/adj_alloc.h>
  18 #include <vnet/adj/adj_internal.h>
  19
  20 /**
  21  * adj_rewrite_add_and_lock
  22  *
  23  * A rewrite sub-type has the rewrite string provided, but no key
  24  */
  25 adj_index_t
  26 adj_rewrite_add_and_lock (fib_protocol_t nh_proto,
  27                           fib_link_t link_type,
  28                           u32 sw_if_index,
  29                           u8 *rewrite)
  30 {
  31     ip_adjacency_t *adj;
  32
  33     adj = adj_alloc(nh_proto);
  34
  35     adj->lookup_next_index = IP_LOOKUP_NEXT_REWRITE;
  36     adj->ia_link = link_type;
  37     adj->rewrite_header.sw_if_index = sw_if_index;
  38
  39     ASSERT(NULL != rewrite);
  40
  41     vnet_rewrite_for_sw_interface(vnet_get_main(),
  42                                   adj_fib_link_2_vnet(link_type),
  43                                   adj->rewrite_header.sw_if_index,
  44                                   adj_get_rewrite_node(link_type)->index,
  45                                   rewrite,
  46                                   &adj->rewrite_header,
  47                                   sizeof (adj->rewrite_data));
  48
  49     adj_lock(adj->heap_handle);
  50
  51     return (adj->heap_handle);
  52 }