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hdlc.h
Go to the documentation of this file.
1
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
3
* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
6
*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* 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.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* hdlc.h: types/functions for hdlc.
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*
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* Copyright (c) 2008 Eliot Dresselhaus
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*
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* Permission is hereby granted, free of charge, to any person obtaining
21
* a copy of this software and associated documentation files (the
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* "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
*
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* The above copyright notice and this permission notice shall be
29
* included in all copies or substantial portions of the Software.
30
*
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* 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
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* 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.
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*/
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#ifndef included_hdlc_h
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#define included_hdlc_h
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#include <
vnet/vnet.h
>
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#include <
vnet/hdlc/packet.h
>
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#include <
vnet/pg/pg.h
>
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extern
vnet_hw_interface_class_t
hdlc_hw_interface_class
;
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49
typedef
enum
50
{
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#define hdlc_error(n,s) HDLC_ERROR_##n,
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#include <
vnet/hdlc/error.def
>
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#undef hdlc_error
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HDLC_N_ERROR
,
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}
hdlc_error_t
;
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typedef
struct
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{
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/* Name (a c string). */
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char
*
name
;
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/* HDLC protocol type in host byte order. */
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hdlc_protocol_t
protocol
;
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/* Node which handles this type. */
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u32
node_index
;
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/* Next index for this type. */
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u32
next_index
;
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}
hdlc_protocol_info_t
;
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typedef
struct
73
{
74
vlib_main_t
*
vlib_main
;
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hdlc_protocol_info_t
*
protocol_infos
;
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/* Hash tables mapping name/protocol to protocol info index. */
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uword
*protocol_info_by_name, *
protocol_info_by_protocol
;
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}
hdlc_main_t
;
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82
always_inline
hdlc_protocol_info_t
*
83
hdlc_get_protocol_info
(
hdlc_main_t
* em,
hdlc_protocol_t
protocol
)
84
{
85
uword
*p =
hash_get
(em->
protocol_info_by_protocol
,
protocol
);
86
return
p ?
vec_elt_at_index
(em->
protocol_infos
, p[0]) : 0;
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}
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89
extern
hdlc_main_t
hdlc_main
;
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/* Register given node index to take input for given hdlc type. */
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void
93
hdlc_register_input_type
(
vlib_main_t
*
vm
,
94
hdlc_protocol_t
protocol
,
u32
node_index
);
95
96
format_function_t
format_hdlc_protocol
;
97
format_function_t
format_hdlc_header
;
98
format_function_t
format_hdlc_header_with_length
;
99
100
/* Parse hdlc protocol as 0xXXXX or protocol name.
101
In either host or network byte order. */
102
unformat_function_t
unformat_hdlc_protocol_host_byte_order
;
103
unformat_function_t
unformat_hdlc_protocol_net_byte_order
;
104
105
/* Parse hdlc header. */
106
unformat_function_t
unformat_hdlc_header
;
107
unformat_function_t
unformat_pg_hdlc_header
;
108
109
always_inline
void
110
hdlc_setup_node
(
vlib_main_t
*
vm
,
u32
node_index
)
111
{
112
vlib_node_t
*n =
vlib_get_node
(
vm
,
node_index
);
113
pg_node_t
*pn =
pg_get_node
(
node_index
);
114
115
n->
format_buffer
=
format_hdlc_header_with_length
;
116
n->
unformat_buffer
=
unformat_hdlc_header
;
117
pn->
unformat_edit
=
unformat_pg_hdlc_header
;
118
}
119
120
void
121
hdlc_register_input_protocol
(
vlib_main_t
*
vm
,
122
hdlc_protocol_t
protocol
,
u32
node_index
);
123
124
#endif
/* included_hdlc_h */
125
126
/*
127
* fd.io coding-style-patch-verification: ON
128
*
129
* Local Variables:
130
* eval: (c-set-style "gnu")
131
* End:
132
*/
hdlc_setup_node
static void hdlc_setup_node(vlib_main_t *vm, u32 node_index)
Definition:
hdlc.h:110
hdlc_main_t::protocol_infos
hdlc_protocol_info_t * protocol_infos
Definition:
hdlc.h:76
hdlc_main
hdlc_main_t hdlc_main
Definition:
hdlc.c:44
hdlc_protocol_info_t::name
char * name
Definition:
hdlc.h:60
pg.h
format_hdlc_header
format_function_t format_hdlc_header
Definition:
hdlc.h:97
unformat_hdlc_protocol_host_byte_order
unformat_function_t unformat_hdlc_protocol_host_byte_order
Definition:
hdlc.h:102
packet.h
vm
vlib_main_t * vm
X-connect all packets from the HOST to the PHY.
Definition:
nat44_ei.c:3047
node_index
node node_index
Definition:
interface_output.c:420
hdlc_register_input_type
void hdlc_register_input_type(vlib_main_t *vm, hdlc_protocol_t protocol, u32 node_index)
vlib_node_t::unformat_buffer
unformat_function_t * unformat_buffer
Definition:
node.h:349
hdlc_register_input_protocol
void hdlc_register_input_protocol(vlib_main_t *vm, hdlc_protocol_t protocol, u32 node_index)
Definition:
node.c:347
pg_node_t
Definition:
pg.h:324
hdlc_hw_interface_class
vnet_hw_interface_class_t hdlc_hw_interface_class
vlib_node_t::format_buffer
format_function_t * format_buffer
Definition:
node.h:348
format_hdlc_protocol
format_function_t format_hdlc_protocol
Definition:
hdlc.h:96
hdlc_main_t::protocol_info_by_protocol
uword * protocol_info_by_protocol
Definition:
hdlc.h:79
pg_node_t::unformat_edit
unformat_function_t * unformat_edit
Definition:
pg.h:327
vec_elt_at_index
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
Definition:
vec_bootstrap.h:203
hdlc_main_t::vlib_main
vlib_main_t * vlib_main
Definition:
hdlc.h:74
uword
u64 uword
Definition:
types.h:112
pg_get_node
static pg_node_t * pg_get_node(uword node_index)
Definition:
pg.h:381
hash_get
#define hash_get(h, key)
Definition:
hash.h:249
unformat_hdlc_protocol_net_byte_order
unformat_function_t unformat_hdlc_protocol_net_byte_order
Definition:
hdlc.h:103
error.def
vlib_get_node
static vlib_node_t * vlib_get_node(vlib_main_t *vm, u32 i)
Get vlib node by index.
Definition:
node_funcs.h:86
hdlc_get_protocol_info
static hdlc_protocol_info_t * hdlc_get_protocol_info(hdlc_main_t *em, hdlc_protocol_t protocol)
Definition:
hdlc.h:83
HDLC_N_ERROR
@ HDLC_N_ERROR
Definition:
hdlc.h:54
format_function_t
u8 *() format_function_t(u8 *s, va_list *args)
Definition:
format.h:48
hdlc_main_t
Definition:
hdlc.h:72
always_inline
#define always_inline
Definition:
rdma_mlx5dv.h:23
hdlc_protocol_t
hdlc_protocol_t
Definition:
packet.h:52
u32
unsigned int u32
Definition:
types.h:88
protocol
vl_api_ip_proto_t protocol
Definition:
lb_types.api:72
unformat_function_t
uword() unformat_function_t(unformat_input_t *input, va_list *args)
Definition:
format.h:225
vlib_main_t
Definition:
main.h:102
vlib_node_t
Definition:
node.h:247
hdlc_protocol_info_t::next_index
u32 next_index
Definition:
hdlc.h:69
format_hdlc_header_with_length
format_function_t format_hdlc_header_with_length
Definition:
hdlc.h:98
unformat_hdlc_header
unformat_function_t unformat_hdlc_header
Definition:
hdlc.h:106
hdlc_protocol_info_t::protocol
hdlc_protocol_t protocol
Definition:
hdlc.h:63
vnet.h
hdlc_protocol_info_t
Definition:
hdlc.h:57
hdlc_protocol_info_t::node_index
u32 node_index
Definition:
hdlc.h:66
hdlc_error_t
hdlc_error_t
Definition:
hdlc.h:49
vnet_hw_interface_class_t
struct _vnet_hw_interface_class vnet_hw_interface_class_t
unformat_pg_hdlc_header
unformat_function_t unformat_pg_hdlc_header
Definition:
hdlc.h:107
src
vnet
hdlc
hdlc.h
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