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Vector Packet Processing
init.c
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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. */
46 
47 static void
48 add_type (ethernet_main_t * em, ethernet_type_t type, char *type_name)
49 {
51  u32 i;
52 
53  vec_add2 (em->type_infos, ti, 1);
54  i = ti - em->type_infos;
55 
56  ti->name = type_name;
57  ti->type = type;
58  ti->next_index = ti->node_index = ~0;
59 
60  hash_set (em->type_info_by_type, type, i);
61  hash_set_mem (em->type_info_by_name, ti->name, i);
62 }
63 
64 /* Built-in ip4 tx feature path definition */
65 /* *INDENT-OFF* */
66 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 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 *
84 {
86  clib_error_t *error;
87 
88  /*
89  * Set up the L2 path now, or we'll wipe out the L2 ARP
90  * registration set up by ethernet_arp_init.
91  */
92  if ((error = vlib_call_init_function (vm, l2_init)))
93  return error;
94 
95  em->vlib_main = vm;
96 
97  em->type_info_by_name = hash_create_string (0, sizeof (uword));
98  em->type_info_by_type = hash_create (0, sizeof (uword));
99 
100 #define ethernet_type(n,s) add_type (em, ETHERNET_TYPE_##s, #s);
101 #include "types.def"
102 #undef ethernet_type
103 
104  if ((error = vlib_call_init_function (vm, llc_init)))
105  return error;
106  if ((error = vlib_call_init_function (vm, ethernet_input_init)))
107  return error;
108  if ((error = vlib_call_init_function (vm, vnet_feature_init)))
109  return error;
110 
111  return 0;
112 }
113 
115 
118 {
119  return &ethernet_main;
120 }
121 
122 /*
123  * fd.io coding-style-patch-verification: ON
124  *
125  * Local Variables:
126  * eval: (c-set-style "gnu")
127  * End:
128  */
#define hash_set(h, key, value)
Definition: hash.h:255
ethernet_main_t ethernet_main
Definition: init.c:45
vlib_main_t * vlib_main
Definition: ethernet.h:292
ethernet_type_t
Definition: packet.h:45
#define vec_add2(V, P, N)
Add N elements to end of vector V, return pointer to new elements in P.
Definition: vec.h:564
int i
#define hash_set_mem(h, key, value)
Definition: hash.h:275
uword * type_info_by_name
Definition: ethernet.h:310
VNET_FEATURE_ARC_INIT(ethernet_output, static)
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:163
u8 output_feature_arc_index
Definition: ethernet.h:329
unsigned int u32
Definition: types.h:88
#define vlib_call_init_function(vm, x)
Definition: init.h:260
static clib_error_t * vnet_feature_init(vlib_main_t *vm)
Definition: feature.c:22
#define hash_create_string(elts, value_bytes)
Definition: hash.h:690
static void add_type(ethernet_main_t *em, ethernet_type_t type, char *type_name)
Definition: init.c:48
static clib_error_t * ethernet_input_init(vlib_main_t *vm)
Definition: node.c:2008
ethernet_main_t * ethernet_get_main(vlib_main_t *vm)
Definition: init.c:117
vlib_main_t * vm
Definition: buffer.c:301
#define hash_create(elts, value_bytes)
Definition: hash.h:696
ethernet_type_t type
Definition: ethernet.h:200
VNET_FEATURE_INIT(ethernet_tx_drop, static)
static clib_error_t * llc_init(vlib_main_t *vm)
Definition: llc.c:211
#define VNET_FEATURES(...)
Definition: feature.h:435
clib_error_t * l2_init(vlib_main_t *vm)
Definition: l2_input.c:1217
uword * type_info_by_type
Definition: ethernet.h:310
u64 uword
Definition: types.h:112
static clib_error_t * ethernet_init(vlib_main_t *vm)
Definition: init.c:83
ethernet_type_info_t * type_infos
Definition: ethernet.h:307