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Vector Packet Processing
pg.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  * osi_pg.c: packet generator osi interface
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 #include <vnet/osi/osi.h>
43 
44 typedef struct
45 {
48 
49 static inline void
51 {
52  pg_edit_init (&e->protocol, osi_header_t, protocol);
53 }
54 
55 uword
56 unformat_pg_osi_header (unformat_input_t * input, va_list * args)
57 {
58  pg_stream_t *s = va_arg (*args, pg_stream_t *);
60  u32 group_index, error;
61 
62  h = pg_create_edit_group (s, sizeof (h[0]), sizeof (osi_header_t),
63  &group_index);
65 
66  error = 1;
67  if (!unformat (input, "%U",
69  goto done;
70 
71  {
72  osi_main_t *pm = &osi_main;
73  osi_protocol_info_t *pi = 0;
74  pg_node_t *pg_node = 0;
75 
76  if (h->protocol.type == PG_EDIT_FIXED)
77  {
78  u8 t = *h->protocol.values[PG_EDIT_LO];
79  pi = osi_get_protocol_info (pm, t);
80  if (pi && pi->node_index != ~0)
81  pg_node = pg_get_node (pi->node_index);
82  }
83 
84  if (pg_node && pg_node->unformat_edit
85  && unformat_user (input, pg_node->unformat_edit, s))
86  ;
87 
88  else if (!unformat_user (input, unformat_pg_payload, s))
89  goto done;
90  }
91 
92  error = 0;
93 done:
94  if (error)
96  return error == 0;
97 }
98 
99 
100 /*
101  * fd.io coding-style-patch-verification: ON
102  *
103  * Local Variables:
104  * eval: (c-set-style "gnu")
105  * End:
106  */
Definition: edit.h:64
u32 node_index
Definition: osi.h:91
#define PG_EDIT_LO
Definition: edit.h:83
uword unformat_user(unformat_input_t *input, unformat_function_t *func,...)
Definition: unformat.c:982
uword unformat_pg_edit(unformat_input_t *input, va_list *args)
Definition: edit.c:106
pg_edit_t protocol
Definition: pg.c:46
static pg_node_t * pg_get_node(uword node_index)
Definition: pg.h:350
uword unformat_pg_osi_header(unformat_input_t *input, va_list *args)
Definition: pg.c:56
uword unformat_pg_payload(unformat_input_t *input, va_list *args)
Definition: edit.c:127
pg_edit_type_t type
Definition: edit.h:66
#define pg_edit_init(e, type, field)
Definition: edit.h:116
static void * pg_create_edit_group(pg_stream_t *s, int n_edit_bytes, int n_packet_bytes, u32 *group_index)
Definition: pg.h:225
u8 * values[2]
Definition: edit.h:82
unformat_function_t unformat_osi_protocol
Definition: osi.h:142
osi_main_t osi_main
Definition: osi.c:44
struct _unformat_input_t unformat_input_t
static osi_protocol_info_t * osi_get_protocol_info(osi_main_t *m, osi_protocol_t protocol)
Definition: osi.h:123
static void pg_osi_header_init(pg_osi_header_t *e)
Definition: pg.c:50
vec_header_t h
Definition: buffer.c:275
unformat_function_t * unformat_edit
Definition: pg.h:307
unsigned int u32
Definition: types.h:88
static void pg_free_edit_group(pg_stream_t *s)
Definition: pg.h:278
Definition: pg.h:96
u64 uword
Definition: types.h:112
unsigned char u8
Definition: types.h:56
Definition: pg.h:304
uword unformat(unformat_input_t *i, const char *fmt,...)
Definition: unformat.c:971