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Vector Packet Processing
hdlc.h
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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  * hdlc.h: types/functions for hdlc.
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 #ifndef included_hdlc_h
41 #define included_hdlc_h
42 
43 #include <vnet/vnet.h>
44 #include <vnet/hdlc/packet.h>
45 #include <vnet/pg/pg.h>
46 
48 
49 typedef enum {
50 #define hdlc_error(n,s) HDLC_ERROR_##n,
51 #include <vnet/hdlc/error.def>
52 #undef hdlc_error
54 } hdlc_error_t;
55 
56 typedef struct {
57  /* Name (a c string). */
58  char * name;
59 
60  /* HDLC protocol type in host byte order. */
62 
63  /* Node which handles this type. */
65 
66  /* Next index for this type. */
69 
70 typedef struct {
72 
74 
75  /* Hash tables mapping name/protocol to protocol info index. */
76  uword * protocol_info_by_name, * protocol_info_by_protocol;
77 } hdlc_main_t;
78 
81 {
82  uword * p = hash_get (em->protocol_info_by_protocol, protocol);
83  return p ? vec_elt_at_index (em->protocol_infos, p[0]) : 0;
84 }
85 
86 extern hdlc_main_t hdlc_main;
87 
88 /* Register given node index to take input for given hdlc type. */
89 void
91  hdlc_protocol_t protocol,
92  u32 node_index);
93 
94 void hdlc_set_adjacency (vnet_rewrite_header_t * rw,
95  uword max_data_bytes,
96  hdlc_protocol_t protocol);
97 
101 
102 /* Parse hdlc protocol as 0xXXXX or protocol name.
103  In either host or network byte order. */
106 
107 /* Parse hdlc header. */
110 
111 always_inline void
112 hdlc_setup_node (vlib_main_t * vm, u32 node_index)
113 {
114  vlib_node_t * n = vlib_get_node (vm, node_index);
115  pg_node_t * pn = pg_get_node (node_index);
116 
120 }
121 
122 void
124  hdlc_protocol_t protocol,
125  u32 node_index);
126 
127 #endif /* included_hdlc_h */
vnet_hw_interface_class_t hdlc_hw_interface_class
uword( unformat_function_t)(unformat_input_t *input, va_list *args)
Definition: format.h:231
static hdlc_protocol_info_t * hdlc_get_protocol_info(hdlc_main_t *em, hdlc_protocol_t protocol)
Definition: hdlc.h:80
hdlc_main_t hdlc_main
Definition: hdlc.c:44
format_function_t format_hdlc_header_with_length
Definition: hdlc.h:100
void hdlc_register_input_type(vlib_main_t *vm, hdlc_protocol_t protocol, u32 node_index)
u8 *( format_function_t)(u8 *s, va_list *args)
Definition: format.h:48
unformat_function_t unformat_hdlc_protocol_net_byte_order
Definition: hdlc.h:105
unformat_function_t unformat_pg_hdlc_header
Definition: hdlc.h:109
static pg_node_t * pg_get_node(uword node_index)
Definition: pg.h:350
hdlc_protocol_t
Definition: packet.h:52
static void hdlc_setup_node(vlib_main_t *vm, u32 node_index)
Definition: hdlc.h:112
hdlc_error_t
Definition: hdlc.h:49
#define always_inline
Definition: clib.h:84
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
#define hash_get(h, key)
Definition: hash.h:248
unformat_function_t unformat_hdlc_protocol_host_byte_order
Definition: hdlc.h:104
format_function_t * format_buffer
Definition: node.h:311
unformat_function_t unformat_hdlc_header
Definition: hdlc.h:108
uword * protocol_info_by_protocol
Definition: hdlc.h:76
vlib_main_t * vlib_main
Definition: hdlc.h:71
unformat_function_t * unformat_buffer
Definition: node.h:312
unformat_function_t * unformat_edit
Definition: pg.h:307
void hdlc_register_input_protocol(vlib_main_t *vm, hdlc_protocol_t protocol, u32 node_index)
Definition: node.c:326
unsigned int u32
Definition: types.h:88
u64 uword
Definition: types.h:112
struct _vnet_hw_interface_class vnet_hw_interface_class_t
void hdlc_set_adjacency(vnet_rewrite_header_t *rw, uword max_data_bytes, hdlc_protocol_t protocol)
format_function_t format_hdlc_protocol
Definition: hdlc.h:98
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
Definition: node_funcs.h:58
hdlc_protocol_info_t * protocol_infos
Definition: hdlc.h:73
hdlc_protocol_t protocol
Definition: hdlc.h:61
format_function_t format_hdlc_header
Definition: hdlc.h:99
Definition: pg.h:304