aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/cdp/cdp.c
blob: 08456ac2faf9018c924313dc2ddf87af8031ce4d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
/*
 * cdp.c - cdp protocol plug-in
 *
 * Copyright (c) 2011-2018 by Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <cdp/cdp.h>

#include <vlibapi/api.h>
#include <vlibmemory/api.h>
#include <vpp/app/version.h>

/* define message IDs */
#include <cdp/cdp_msg_enum.h>

/* define message structures */
#define vl_typedefs
#include <cdp/cdp_all_api_h.h>
#undef vl_typedefs

/* define generated endian-swappers */
#define vl_endianfun
#include <cdp/cdp_all_api_h.h>
#undef vl_endianfun

/* instantiate all the print functions we know about */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#define vl_printfun
#include <cdp/cdp_all_api_h.h>
#undef vl_printfun

/* Get the API version number */
#define vl_api_version(n,v) static u32 api_version=(v);
#include <cdp/cdp_all_api_h.h>
#undef vl_api_version

#define REPLY_MSG_ID_BASE cm->msg_id_base
#include <vlibapi/api_helper_macros.h>

/* List of message types that this plugin understands */

#define foreach_cdp_plugin_api_msg                           \
_(CDP_ENABLE_DISABLE, cdp_enable_disable)

/* Action function shared between message handler and debug CLI */

int
cdp_enable_disable (cdp_main_t * cm, int enable_disable)
{
  int rv = 0;

  if (enable_disable)
    vlib_process_signal_event (cm->vlib_main, cdp_process_node.index,
			       CDP_EVENT_ENABLE, 0);
  else
    vlib_process_signal_event (cm->vlib_main, cdp_process_node.index,
			       CDP_EVENT_DISABLE, 0);
  cm->enabled = enable_disable;

  return rv;
}

static clib_error_t *
cdp_command_fn (vlib_main_t * vm,
		unformat_input_t * input, vlib_cli_command_t * cmd)
{
  cdp_main_t *cm = &cdp_main;
  int enable_disable = 1;

  int rv;

  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (input, "disable"))
	enable_disable = 0;
      else if (unformat (input, "enable"))
	enable_disable = 1;
      else
	break;
    }

  rv = cdp_enable_disable (cm, enable_disable);

  switch (rv)
    {
    case 0:
      break;

    default:
      return clib_error_return (0, "cdp_enable_disable returned %d", rv);
    }
  return 0;
}

/* *INDENT-OFF* */
VLIB_CLI_COMMAND (cdp_command, static) =
{
  .path = "cdp",
  .short_help = "cdp enable | disable",
  .function = cdp_command_fn,
};
/* *INDENT-ON* */

/* API message handler */
static void vl_api_cdp_enable_disable_t_handler
  (vl_api_cdp_enable_disable_t * mp)
{
  vl_api_cdp_enable_disable_reply_t *rmp;
  cdp_main_t *cm = &cdp_main;
  int rv;

  rv = cdp_enable_disable (cm, (int) (mp->enable_disable));

  REPLY_MACRO (VL_API_CDP_ENABLE_DISABLE_REPLY);
}

/* Set up the API message handling tables */
static clib_error_t *
cdp_plugin_api_hookup (vlib_main_t * vm)
{
  cdp_main_t *cm = &cdp_main;
#define _(N,n)                                                  \
    vl_msg_api_set_handlers((VL_API_##N + cm->msg_id_base),     \
                           #n,					\
                           vl_api_##n##_t_handler,              \
                           vl_noop_handler,                     \
                           vl_api_##n##_t_endian,               \
                           vl_api_##n##_t_print,                \
                           sizeof(vl_api_##n##_t), 1);
  foreach_cdp_plugin_api_msg;
#undef _

  return 0;
}

#define vl_msg_name_crc_list
#include <cdp/cdp_all_api_h.h>
#undef vl_msg_name_crc_list

static void
setup_message_id_table (cdp_main_t * cm, api_main_t * am)
{
#define _(id,n,crc)   vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + cm->msg_id_base);
  foreach_vl_msg_name_crc_cdp;
#undef _
}

static clib_error_t *
cdp_init (vlib_main_t * vm)
{
  cdp_main_t *cm = &cdp_main;
  clib_error_t *error = 0;
  u8 *name;

  cm->vlib_main = vm;

  name = format (0, "cdp_%08x%c", api_version, 0);

  /* Ask for a correctly-sized block of API message decode slots */
  cm->msg_id_base = vl_msg_api_get_msg_ids
    ((char *) name, VL_MSG_FIRST_AVAILABLE);

  error = cdp_plugin_api_hookup (vm);

  /* Add our API messages to the global name_crc hash table */
  setup_message_id_table (cm, &api_main);

  vec_free (name);

  return error;
}

VLIB_INIT_FUNCTION (cdp_init);

/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () =
{
  .version = VPP_BUILD_VER,
};
/* *INDENT-ON* */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */