Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2015 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             :  * ethernet_init.c: ethernet initialization
      17             :  *
      18             :  * Copyright (c) 2008 Eliot Dresselhaus
      19             :  *
      20             :  * Permission is hereby granted, free of charge, to any person obtaining
      21             :  * a copy of this software and associated documentation files (the
      22             :  * "Software"), to deal in the Software without restriction, including
      23             :  * without limitation the rights to use, copy, modify, merge, publish,
      24             :  * distribute, sublicense, and/or sell copies of the Software, and to
      25             :  * permit persons to whom the Software is furnished to do so, subject to
      26             :  * the following conditions:
      27             :  *
      28             :  * The above copyright notice and this permission notice shall be
      29             :  * included in all copies or substantial portions of the Software.
      30             :  *
      31             :  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      32             :  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      33             :  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
      34             :  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
      35             :  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
      36             :  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
      37             :  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
      38             :  */
      39             : 
      40             : #include <vlib/vlib.h>
      41             : #include <vnet/ethernet/ethernet.h>
      42             : #include <vnet/ip/ip.h>           // for feature registration
      43             : 
      44             : /* Global main structure. */
      45             : ethernet_main_t ethernet_main;
      46             : 
      47             : static void
      48       39130 : add_type (ethernet_main_t * em, ethernet_type_t type, char *type_name)
      49             : {
      50             :   ethernet_type_info_t *ti;
      51             :   u32 i;
      52             : 
      53       39130 :   vec_add2 (em->type_infos, ti, 1);
      54       39130 :   i = ti - em->type_infos;
      55             : 
      56       39130 :   ti->name = type_name;
      57       39130 :   ti->type = type;
      58       39130 :   ti->next_index = ti->node_index = ~0;
      59             : 
      60       39130 :   hash_set (em->type_info_by_type, type, i);
      61       78260 :   hash_set_mem (em->type_info_by_name, ti->name, i);
      62       39130 : }
      63             : 
      64             : /* Built-in ip4 tx feature path definition */
      65             : /* *INDENT-OFF* */
      66        1119 : VNET_FEATURE_ARC_INIT (ethernet_output, static) =
      67             : {
      68             :   .arc_name  = "ethernet-output",
      69             :   .last_in_arc = "error-drop",
      70             :   .start_nodes = VNET_FEATURES ("adj-l2-midchain"),
      71             :   .arc_index_ptr = &ethernet_main.output_feature_arc_index,
      72             : };
      73             : 
      74       70583 : VNET_FEATURE_INIT (ethernet_tx_drop, static) =
      75             : {
      76             :   .arc_name = "ethernet-output",
      77             :   .node_name = "error-drop",
      78             :   .runs_before = 0,     /* not before any other features */
      79             : };
      80             : /* *INDENT-ON* */
      81             : 
      82             : static clib_error_t *
      83         559 : ethernet_init (vlib_main_t * vm)
      84             : {
      85         559 :   ethernet_main_t *em = &ethernet_main;
      86             : 
      87         559 :   em->vlib_main = vm;
      88             : 
      89         559 :   em->type_info_by_name = hash_create_string (0, sizeof (uword));
      90         559 :   em->type_info_by_type = hash_create (0, sizeof (uword));
      91             :   /*
      92             :    * System default ethernet interface MTU, configure via ethernet_config in
      93             :    * interface.c if desired.
      94             :    */
      95         559 :   em->default_mtu = 9000;
      96             : 
      97             : #define ethernet_type(n,s) add_type (em, ETHERNET_TYPE_##s, #s);
      98             : #include "types.def"
      99             : #undef ethernet_type
     100             : 
     101             :   /*
     102             :    * ethernet_input_init is effectively part of this function.
     103             :    * Simply ensuring that it happens after we set up the hash tables
     104             :    * is not sufficient.
     105             :    */
     106         559 :   ethernet_input_init (vm, em);
     107         559 :   return 0;
     108             : }
     109             : 
     110             : /* *INDENT-OFF* */
     111       11759 : VLIB_INIT_FUNCTION (ethernet_init) =
     112             : {
     113             :   /*
     114             :    * Set up the L2 path before ethernet_init, or we'll wipe out the L2 ARP
     115             :    * registration set up by ethernet_arp_init.
     116             :    */
     117             :   .init_order = VLIB_INITS("l2_init",
     118             :                            "ethernet_init",
     119             :                            "llc_init",
     120             :                            "vnet_feature_init"),
     121             : };
     122             : /* *INDENT-ON* */
     123             : 
     124             : ethernet_main_t *
     125        6255 : ethernet_get_main (vlib_main_t * vm)
     126             : {
     127        6255 :   return &ethernet_main;
     128             : }
     129             : 
     130             : /*
     131             :  * fd.io coding-style-patch-verification: ON
     132             :  *
     133             :  * Local Variables:
     134             :  * eval: (c-set-style "gnu")
     135             :  * End:
     136             :  */