aboutsummaryrefslogtreecommitdiffstats
path: root/hicn-plugin/src/faces/app/face_prod.c
blob: c183d65895a17889a4402c418bbb9b1be7126635 (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
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
/*
 * Copyright (c) 2017-2019 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/ip/ip6_packet.h>
#include <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/interface_funcs.h>

#include "face_prod.h"
#include "address_mgr.h"
#include "../../infra.h"
#include "../../route.h"
#include "../../cache_policies/cs_lru.h"

hicn_face_prod_state_t *face_state_vec;

/* used to check if an interface is already in the vector */
u32 *face_state_pool;

static int
hicn_app_state_create (u32 swif, fib_prefix_t * prefix)
{
  /* Make sure that the pool is not empty */
  pool_validate_index (face_state_pool, 0);

  u32 *swif_app;
  u8 found = 0;
  /* *INDENT-OFF* */
  pool_foreach (swif_app, face_state_pool,{
      if (*swif_app == swif)
	{
	  found = 1;
	}
    }
  );
  /* *INDENT-ON* */


  if (found)
    return HICN_ERROR_APPFACE_ALREADY_ENABLED;


  /* Create the appif and store in the vector */
  vec_validate (face_state_vec, swif);
  clib_memcpy (&(face_state_vec[swif].prefix), prefix, sizeof (fib_prefix_t));

  /* Set as busy the element in the vector */
  pool_get (face_state_pool, swif_app);
  *swif_app = swif;

  int ret = HICN_ERROR_NONE;
  if (ip46_address_is_ip4 (&(prefix->fp_addr)))
    {
      ret =
	vnet_feature_enable_disable ("ip4-unicast", "hicn-face-prod-input",
				     swif, 1, 0, 0);
    }
  else
    {
      ret =
	vnet_feature_enable_disable ("ip6-unicast", "hicn-face-prod-input",
				     swif, 1, 0, 0);
    }

  return ret == 0 ? HICN_ERROR_NONE : HICN_ERROR_APPFACE_FEATURE;
}

static int
hicn_app_state_del (u32 swif)
{
  /* Make sure that the pool is not empty */
  pool_validate_index (face_state_pool, 0);

  u32 *temp;
  u32 *swif_app = NULL;
  u8 found = 0;
  fib_prefix_t *prefix;
  /* *INDENT-OFF* */
  pool_foreach (temp, face_state_pool,{
      if (*temp == swif)
	{
	  found = 1;
	  swif_app = temp;
	}
    }
  );
  /* *INDENT-ON* */

  prefix = &(face_state_vec[swif].prefix);
  if (!found)
    return HICN_ERROR_APPFACE_NOT_FOUND;

  int ret = HICN_ERROR_NONE;
  if (ip46_address_is_ip4 (&prefix->fp_addr))
    {
      ret =
	vnet_feature_enable_disable ("ip4-unicast", "hicn-face-prod-input",
				     swif, 0, 0, 0);
    }
  else
    {
      ret =
	vnet_feature_enable_disable ("ip6-unicast", "hicn-face-prod-input",
				     swif, 0, 0, 0);
    }

  pool_put (face_state_pool, swif_app);
  memset (&face_state_vec[swif], 0, sizeof (hicn_face_prod_state_t));

  return ret == 0 ? HICN_ERROR_NONE : HICN_ERROR_APPFACE_FEATURE;
}

int
hicn_face_prod_add (fib_prefix_t * prefix, u32 sw_if, u32 * cs_reserved,
		    ip46_address_t * prod_addr, hicn_face_id_t * faceid)
{
  vlib_main_t *vm = vlib_get_main ();
  vnet_main_t *vnm = vnet_get_main ();

  hicn_main_t *hm = &hicn_main;

  ip46_address_t local_app_ip;
  ip46_address_t remote_app_ip;
  u32 if_flags = 0;

  if (!hm->is_enabled)
    {
      return HICN_ERROR_FWD_NOT_ENABLED;
    }

  if (vnet_get_sw_interface_or_null (vnm, sw_if) == NULL)
    {
      return HICN_ERROR_FACE_HW_INT_NOT_FOUND;
    }

  int ret = HICN_ERROR_NONE;
  hicn_face_t *face = NULL;

  if_flags |= VNET_SW_INTERFACE_FLAG_ADMIN_UP;
  vnet_sw_interface_set_flags (vnm, sw_if, if_flags);

  u8 *s0;
  s0 = format (0, "Prefix %U", format_fib_prefix, prefix);

  vlib_cli_output (vm, "Received request for %s, swif %d\n", s0, sw_if);

  if (ip46_address_is_zero (&prefix->fp_addr))
    {
      return HICN_ERROR_APPFACE_PROD_PREFIX_NULL;
    }
  /*
   * Check if a producer face is already existing for the same prefix
   * and sw_if
   */
  if (ip46_address_is_ip4 (&prefix->fp_addr))
    {
      face =
	hicn_face_ip4_get (&(prefix->fp_addr.ip4), sw_if,
			   &hicn_face_ip_remote_hashtb);
    }
  else
    {
      face =
	hicn_face_ip6_get (&(prefix->fp_addr.ip6), sw_if,
			   &hicn_face_ip_remote_hashtb);
      if (face != NULL)
	return HICN_ERROR_FACE_ALREADY_CREATED;
    }

  if (face != NULL)
    {
      if (!(face->shared.flags & HICN_FACE_FLAGS_DELETED))
	return HICN_ERROR_FACE_ALREADY_CREATED;

      /*
       * Something went worng, a consumer face exists for the
       * producer's prefix.
       */
      /* It should never happens, this is a safety check. */
      if (face->shared.flags & HICN_FACE_FLAGS_APPFACE_CONS)
	return HICN_ERROR_FACE_ALREADY_CREATED;

      /* If the face exists but is marked as deleted, undelete it */
      if (face->shared.flags & HICN_FACE_FLAGS_DELETED)
	{
	  /*
	   * remove the deleted flag and retrieve the face
	   * local addr
	   */
	  face->shared.flags &= HICN_FACE_FLAGS_DELETED;
	  hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data;
	  local_app_ip = prod_face->ip_face.local_addr;
	}
    }
  else
    {
      /* Otherwise create the face */
      if (ip46_address_is_ip4 (&prefix->fp_addr))
	{
	  /*
	   * Otherwise retrieve an ip address to assign as a
	   * local ip addr.
	   */
	  ip4_address_t local_app_ip4;
	  ip4_address_t remote_app_ip4;
	  get_two_ip4_addresses (&local_app_ip4, &remote_app_ip4);
	  ip4_add_del_interface_address (vm,
					 sw_if,
					 &local_app_ip4, 31, 0 /* is_del */ );
	  local_app_ip = to_ip46 ( /* isv6 */ 0, local_app_ip4.as_u8);
	  remote_app_ip = to_ip46 ( /* isv6 */ 0, remote_app_ip4.as_u8);

	  ret =
	    hicn_face_ip_add (&local_app_ip, &remote_app_ip, sw_if, faceid,
			      HICN_FACE_FLAGS_APPFACE_PROD);
	}
      else
	{
	  ip6_address_t local_app_ip6;
	  ip6_address_t remote_app_ip6;
	  get_two_ip6_addresses (&local_app_ip6, &remote_app_ip6);
	  u8 *s0;
	  s0 = format (0, "%U", format_ip6_address, &local_app_ip6);

	  vlib_cli_output (vm, "Setting ip address %s\n", s0);

	  ip6_add_del_interface_address (vm,
					 sw_if,
					 &local_app_ip6, 127,
					 0 /* is_del */ );
	  local_app_ip = to_ip46 ( /* isv6 */ 1, local_app_ip6.as_u8);
	  remote_app_ip = to_ip46 ( /* isv6 */ 1, remote_app_ip6.as_u8);

	  ret =
	    hicn_face_ip_add (&local_app_ip, &remote_app_ip, sw_if, faceid,
			      HICN_FACE_FLAGS_APPFACE_PROD);
	}

      face = hicn_dpoi_get_from_idx (*faceid);

      face->shared.flags |= HICN_FACE_FLAGS_APPFACE_PROD;

      hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data;

      /*
       * For the moment we keep them here although it would be good
       * to create a different face for appface
       */
      prod_face->policy_vft.hicn_cs_insert = hicn_cs_lru.hicn_cs_insert;
      prod_face->policy_vft.hicn_cs_update = hicn_cs_lru.hicn_cs_update;
      prod_face->policy_vft.hicn_cs_dequeue = hicn_cs_lru.hicn_cs_dequeue;
      prod_face->policy_vft.hicn_cs_delete_get =
	hicn_cs_lru.hicn_cs_delete_get;
      prod_face->policy_vft.hicn_cs_trim = hicn_cs_lru.hicn_cs_trim;
      prod_face->policy_vft.hicn_cs_flush = hicn_cs_lru.hicn_cs_flush;

    }

  if (ret == HICN_ERROR_NONE
      && hicn_face_prod_set_lru_max (*faceid, cs_reserved) == HICN_ERROR_NONE)
    {
      hicn_app_state_create (sw_if, prefix);
      ret = hicn_route_add (faceid, 1, prefix);
    }

  *prod_addr = local_app_ip;

  /* Cleanup in case of something went wrong. */
  if (ret)
    {
      hicn_app_state_del (sw_if);

      if (*faceid != HICN_FACE_NULL)
	hicn_face_ip_del (*faceid);
    }
  return ret;
}

int
hicn_face_prod_del (hicn_face_id_t face_id)
{
  if (!hicn_dpoi_idx_is_valid (face_id))
    return HICN_ERROR_APPFACE_NOT_FOUND;

  hicn_face_t *face = hicn_dpoi_get_from_idx (face_id);

  if (face->shared.flags & HICN_FACE_FLAGS_APPFACE_PROD)
    {
      hicn_face_prod_t *prod_face = (hicn_face_prod_t *) face->data;
      /* Free the CS reserved for the face */
      hicn_main.pitcs.pcs_app_count -= prod_face->policy.max;
      prod_face->policy.max = 0;

      /* Remove the face from the fib */
      hicn_route_del_nhop (&(face_state_vec[face->shared.sw_if].prefix),
			   face_id);

      /*
       * Delete the content in the CS before deleting the face.
       * Mandatory to prevent hitting the CS and not having the lru list
       * due to a early deletion of the face.
       */
      vlib_main_t *vm = vlib_get_main ();
      prod_face->policy_vft.hicn_cs_flush (vm, &(hicn_main.pitcs),
					   &(prod_face->policy));

      int ret = hicn_face_ip_del (face_id);
      return ret ==
	HICN_ERROR_NONE ? hicn_app_state_del (face->shared.sw_if) : ret;
    }
  else
    {
      return HICN_ERROR_APPFACE_NOT_FOUND;
    }
}

int
hicn_face_prod_set_lru_max (hicn_face_id_t face_id, u32 * requested_size)
{
  int ret = HICN_ERROR_NONE;
  vlib_main_t *vm = vlib_get_main ();
  hicn_face_t *face;
  hicn_face_prod_t *face_prod;

  if (!hicn_infra_fwdr_initialized)
    {
      ret = HICN_ERROR_FWD_NOT_ENABLED;
      vlib_cli_output (vm, "hicn: %s\n", get_error_string (ret));
      return ret;
    }
  face = hicn_dpoi_get_from_idx (face_id);
  face_prod = (hicn_face_prod_t *) face->data;

  if (face == NULL)
    return HICN_ERROR_FACE_NOT_FOUND;

  if (*requested_size > HICN_PARAM_FACE_MAX_CS_RESERVED)
    *requested_size = HICN_PARAM_FACE_MAX_CS_RESERVED;

  uint32_t available =
    hicn_main.pitcs.pcs_app_max - hicn_main.pitcs.pcs_app_count;

  if (*requested_size > available)
    *requested_size = available;

  face_prod->policy.max = *requested_size;
  face_prod->policy.count = 0;
  face_prod->policy.head = face_prod->policy.tail = 0;

  hicn_main.pitcs.pcs_app_count += *requested_size;

  return ret;
}

u8 *
format_hicn_face_prod (u8 * s, va_list * args)
{
  index_t index = va_arg (*args, index_t);
  CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
  hicn_face_t *face;
  hicn_face_prod_t *prod_face;

  face = hicn_dpoi_get_from_idx (index);
  prod_face = (hicn_face_prod_t *) face->data;

  s =
    format (s, " (producer face: CS size %d, data cached %d)",
	    prod_face->policy.max, prod_face->policy.count);

  return s;
}

/* *INDENT-OFF* */
VNET_FEATURE_INIT(hicn_prod_app_input_ip6, static)=
{
  .arc_name = "ip6-unicast",
  .node_name = "hicn-face-prod-input",
  .runs_before = VNET_FEATURES("ip6-inacl"),
};
/* *INDENT-ON* */

/* *INDENT-OFF* */
VNET_FEATURE_INIT(hicn_prod_app_input_ip4, static)=
{
  .arc_name = "ip4-unicast",
  .node_name = "hicn-face-prod-input",
  .runs_before = VNET_FEATURES("ip4-inacl"),
};
/* *INDENT-ON* */


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