aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/abf/abf_api.c
blob: 958d129f8a4c21752dcaad5141025ea657e498ba (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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
/*
 * Copyright (c) 2016 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 <stddef.h>

#include <vnet/vnet.h>
#include <vnet/plugin/plugin.h>
#include <abf/abf_policy.h>
#include <abf/abf_itf_attach.h>
#include <vnet/mpls/mpls_types.h>
#include <vnet/fib/fib_path_list.h>
#include <vnet/fib/fib_api.h>

#include <vpp/app/version.h>

#include <vlibapi/api.h>
#include <vlibmemory/api.h>

/* define message IDs */
#include <abf/abf_msg_enum.h>

/* define message structures */
#define vl_typedefs
#include <abf/abf_all_api_h.h>
#undef vl_typedefs

/* define generated endian-swappers */
#define vl_endianfun
#include <abf/abf_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 <abf/abf_all_api_h.h>
#undef vl_printfun

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

/**
 * Base message ID fot the plugin
 */
static u32 abf_base_msg_id;

#include <vlibapi/api_helper_macros.h>

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

#define foreach_abf_plugin_api_msg                    \
_(ABF_PLUGIN_GET_VERSION, abf_plugin_get_version)     \
_(ABF_POLICY_ADD_DEL, abf_policy_add_del)             \
_(ABF_POLICY_DUMP, abf_policy_dump)                   \
_(ABF_ITF_ATTACH_ADD_DEL, abf_itf_attach_add_del)     \
_(ABF_ITF_ATTACH_DUMP, abf_itf_attach_dump)

static void
vl_api_abf_plugin_get_version_t_handler (vl_api_abf_plugin_get_version_t * mp)
{
  vl_api_abf_plugin_get_version_reply_t *rmp;
  int msg_size = sizeof (*rmp);
  unix_shared_memory_queue_t *q;

  q = vl_api_client_index_to_input_queue (mp->client_index);
  if (q == 0)
    {
      return;
    }

  rmp = vl_msg_api_alloc (msg_size);
  memset (rmp, 0, msg_size);
  rmp->_vl_msg_id =
    ntohs (VL_API_ABF_PLUGIN_GET_VERSION_REPLY + abf_base_msg_id);
  rmp->context = mp->context;
  rmp->major = htonl (ABF_PLUGIN_VERSION_MAJOR);
  rmp->minor = htonl (ABF_PLUGIN_VERSION_MINOR);

  vl_msg_api_send_shmem (q, (u8 *) & rmp);
}

static void
vl_api_abf_policy_add_del_t_handler (vl_api_abf_policy_add_del_t * mp)
{
  vl_api_abf_policy_add_del_reply_t *rmp;
  fib_route_path_t *paths = NULL, *path;
  int rv = 0;
  u8 pi;

  vec_validate (paths, mp->policy.n_paths - 1);

  for (pi = 0; pi < mp->policy.n_paths; pi++)
    {
      path = &paths[pi];
      rv = fib_path_api_parse (&mp->policy.paths[pi], path);

      if (0 != rv)
	{
	  goto done;
	}
    }

  if (mp->is_add)
    {
      abf_policy_update (ntohl (mp->policy.policy_id),
			 ntohl (mp->policy.acl_index), paths);
    }
  else
    {
      abf_policy_delete (ntohl (mp->policy.policy_id), paths);
    }
done:
  vec_free (paths);

  REPLY_MACRO (VL_API_ABF_POLICY_ADD_DEL_REPLY + abf_base_msg_id);
}

static void
vl_api_abf_itf_attach_add_del_t_handler (vl_api_abf_itf_attach_add_del_t * mp)
{
  vl_api_abf_itf_attach_add_del_reply_t *rmp;
  fib_protocol_t fproto = (mp->attach.is_ipv6 ?
			   FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4);
  int rv = 0;

  if (mp->is_add)
    {
      abf_itf_attach (fproto,
		      ntohl (mp->attach.policy_id),
		      ntohl (mp->attach.priority),
		      ntohl (mp->attach.sw_if_index));
    }
  else
    {
      abf_itf_detach (fproto,
		      ntohl (mp->attach.policy_id),
		      ntohl (mp->attach.sw_if_index));
    }

  REPLY_MACRO (VL_API_ABF_ITF_ATTACH_ADD_DEL_REPLY + abf_base_msg_id);
}

typedef struct abf_dump_walk_ctx_t_
{
  unix_shared_memory_queue_t *q;
  u32 context;
} abf_dump_walk_ctx_t;

static int
abf_policy_send_details (u32 api, void *args)
{
  fib_route_path_encode_t *api_rpaths = NULL, *api_rpath;
  vl_api_abf_policy_details_t *mp;
  abf_dump_walk_ctx_t *ctx;
  vl_api_fib_path_t *fp;
  size_t msg_size;
  abf_policy_t *ap;
  u8 n_paths;

  ctx = args;
  ap = abf_policy_get (api);
  n_paths = fib_path_list_get_n_paths (ap->ap_pl);
  msg_size = sizeof (*mp) + sizeof (mp->policy.paths[0]) * n_paths;

  mp = vl_msg_api_alloc (msg_size);
  memset (mp, 0, msg_size);
  mp->_vl_msg_id = ntohs (VL_API_ABF_POLICY_DETAILS + abf_base_msg_id);

  /* fill in the message */
  mp->context = ctx->context;
  mp->policy.n_paths = n_paths;
  mp->policy.acl_index = htonl (ap->ap_acl);
  mp->policy.policy_id = htonl (ap->ap_id);

  fib_path_list_walk (ap->ap_pl, fib_path_encode, &api_rpaths);

  fp = mp->policy.paths;
  vec_foreach (api_rpath, api_rpaths)
  {
    fib_api_path_encode (api_rpath, fp);
    fp++;
  }

  vl_msg_api_send_shmem (ctx->q, (u8 *) & mp);

  return (1);
}

static void
vl_api_abf_policy_dump_t_handler (vl_api_abf_policy_dump_t * mp)
{
  unix_shared_memory_queue_t *q;

  q = vl_api_client_index_to_input_queue (mp->client_index);
  if (q == 0)
    {
      return;
    }

  abf_dump_walk_ctx_t ctx = {
    .q = q,
    .context = mp->context,
  };

  abf_policy_walk (abf_policy_send_details, &ctx);
}

static int
abf_itf_attach_send_details (u32 aiai, void *args)
{
  vl_api_abf_itf_attach_details_t *mp;
  abf_dump_walk_ctx_t *ctx;
  abf_itf_attach_t *aia;
  abf_policy_t *ap;

  ctx = args;
  aia = abf_itf_attach_get (aiai);
  ap = abf_policy_get (aia->aia_abf);

  mp = vl_msg_api_alloc (sizeof (*mp));
  mp->_vl_msg_id = ntohs (VL_API_ABF_ITF_ATTACH_DETAILS + abf_base_msg_id);

  mp->context = ctx->context;
  mp->attach.policy_id = htonl (ap->ap_id);
  mp->attach.sw_if_index = htonl (aia->aia_sw_if_index);
  mp->attach.priority = htonl (aia->aia_prio);
  mp->attach.is_ipv6 = (aia->aia_proto == FIB_PROTOCOL_IP6);

  vl_msg_api_send_shmem (ctx->q, (u8 *) & mp);

  return (1);
}

static void
vl_api_abf_itf_attach_dump_t_handler (vl_api_abf_itf_attach_dump_t * mp)
{
  unix_shared_memory_queue_t *q;

  q = vl_api_client_index_to_input_queue (mp->client_index);
  if (q == 0)
    {
      return;
    }

  abf_dump_walk_ctx_t ctx = {
    .q = q,
    .context = mp->context,
  };

  abf_itf_attach_walk (abf_itf_attach_send_details, &ctx);
}

#define vl_msg_name_crc_list
#include <abf/abf_all_api_h.h>
#undef vl_msg_name_crc_list

/* Set up the API message handling tables */
static clib_error_t *
abf_plugin_api_hookup (vlib_main_t * vm)
{
#define _(N,n)                                                  \
    vl_msg_api_set_handlers((VL_API_##N + abf_base_msg_id),     \
                            #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_abf_plugin_api_msg;
#undef _

  return 0;
}

static void
setup_message_id_table (api_main_t * apim)
{
#define _(id,n,crc) \
  vl_msg_api_add_msg_name_crc (apim, #n "_" #crc, id + abf_base_msg_id);
  foreach_vl_msg_name_crc_abf;
#undef _
}

static clib_error_t *
abf_api_init (vlib_main_t * vm)
{
  clib_error_t *error = 0;

  u8 *name = format (0, "abf_%08x%c", api_version, 0);

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

  error = abf_plugin_api_hookup (vm);

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

  vec_free (name);

  return error;
}

VLIB_INIT_FUNCTION (abf_api_init);

/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
    .version = VPP_BUILD_VER,
    .description = "ACL based Forwarding",
};
/* *INDENT-ON* */

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