FD.io VPP  v16.06
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  * pg_init.c: VLIB packet generator
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/pg/pg.h>
42 
43 /* Global main structure. */
45 
47 {
48  clib_error_t * error;
49  pg_main_t * pg = &pg_main;
50  int i, j;
51 
52  pg->vlib_main = vm;
53 
54  if ((error = vlib_call_init_function (vm, vnet_main_init)))
55  goto done;
56 
57  if ((error = vlib_call_init_function (vm, pg_cli_init)))
58  goto done;
59 
60  /* Create/free interfaces so that they exist and can be
61  used as a destination interface for streams. Also, create
62  a fixed number of pg interfaces so that interface numbering can
63  be made to be deterministic (at least if <= 4 streams are ever used). */
64  for (i = 0; i < 4; i++)
65  {
66  j = pg_interface_find_free (pg, i);
67  ASSERT (j == i);
68  }
69 
70  /* Free interfaces. */
71  for (i = j; i >= 0; i--)
72  vec_add1 (pg->free_interfaces, i);
73 
74  done:
75  return error;
76 }
77 
sll srl srl sll sra u16x4 i
Definition: vector_sse2.h:267
Definition: pg.h:293
clib_error_t * vnet_main_init(vlib_main_t *vm)
Definition: misc.c:69
#define vec_add1(V, E)
Add 1 element to end of vector (unspecified alignment).
Definition: vec.h:480
#define VLIB_INIT_FUNCTION(x)
Definition: init.h:109
#define vlib_call_init_function(vm, x)
Definition: init.h:159
u32 pg_interface_find_free(pg_main_t *pg, uword stream_index)
Definition: stream.c:125
u32 * free_interfaces
Definition: pg.h:312
static clib_error_t * pg_init(vlib_main_t *vm)
Definition: init.c:46
#define ASSERT(truth)
vlib_main_t * vlib_main
Definition: pg.h:295
pg_main_t pg_main
Definition: init.c:44
static clib_error_t * pg_cli_init(vlib_main_t *vm)
Definition: cli.c:435