summaryrefslogtreecommitdiffstats
path: root/lib/src/protocol/ipv6.c
blob: b3c543249a281cb5eca59db36d99792c2ff7f62b (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
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
/*
 * Copyright (c) 2021 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 <stdlib.h>
#include <string.h>
#include <hicn/common.h>
#include <hicn/error.h>
#include <hicn/ops.h>

typedef unsigned short u_short;
int ipv6_get_payload_length (hicn_type_t type, const hicn_protocol_t *h,
			     size_t *payload_length);

int
ipv6_init_packet_header (hicn_type_t type, hicn_protocol_t *h)
{
  size_t total_header_length;
  int rc = CHILD_OPS (get_header_length, type, h, &total_header_length);
  if (rc < 0)
    return rc;

  /* *INDENT-OFF* */
  h->ipv6 = (_ipv6_header_t){
    .saddr = IP6_ADDRESS_EMPTY,
    .daddr = IP6_ADDRESS_EMPTY,
    .version_class_flow = htonl ((IPV6_DEFAULT_VERSION << 28) |
				 (IPV6_DEFAULT_TRAFFIC_CLASS << 20) |
				 (IPV6_DEFAULT_FLOW_LABEL & 0xfffff)),
    .len = htons ((u16) total_header_length),
    .nxt = type.l2,
    .hlim = HICN_DEFAULT_TTL,
  };
  /* *INDENT-ON* */
  return CHILD_OPS (init_packet_header, type, h);
}

int
ipv6_get_interest_locator (hicn_type_t type, const hicn_protocol_t *h,
			   ip_address_t *ip_address)
{
  ip_address->v6 = h->ipv6.saddr;
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_set_interest_locator (hicn_type_t type, hicn_protocol_t *h,
			   const ip_address_t *ip_address)
{
  h->ipv6.saddr = ip_address->v6;
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_get_interest_name (hicn_type_t type, const hicn_protocol_t *h,
			hicn_name_t *name)
{
  name->prefix.v6 = h->ipv6.daddr;
  return CHILD_OPS (get_interest_name_suffix, type, h, &(name->suffix));
}

int
ipv6_set_interest_name (hicn_type_t type, hicn_protocol_t *h,
			const hicn_name_t *name)
{
  h->ipv6.daddr = name->prefix.v6;
  return CHILD_OPS (set_interest_name_suffix, type, h, &(name->suffix));
}

int
ipv6_get_interest_name_suffix (hicn_type_t type, const hicn_protocol_t *h,
			       hicn_name_suffix_t *suffix)
{
  return CHILD_OPS (get_interest_name_suffix, type, h, suffix);
}

int
ipv6_set_interest_name_suffix (hicn_type_t type, hicn_protocol_t *h,
			       const hicn_name_suffix_t *suffix)
{
  return CHILD_OPS (set_interest_name_suffix, type, h, suffix);
}

int
ipv6_is_interest (hicn_type_t type, const hicn_protocol_t *h, int *is_interest)
{
  return CHILD_OPS (is_interest, type, h, is_interest);
}

int
ipv6_mark_packet_as_interest (hicn_type_t type, hicn_protocol_t *h)
{
  return CHILD_OPS (mark_packet_as_interest, type, h);
}

int
ipv6_mark_packet_as_data (hicn_type_t type, hicn_protocol_t *h)
{
  return CHILD_OPS (mark_packet_as_data, type, h);
}

int
ipv6_reset_interest_for_hash (hicn_type_t type, hicn_protocol_t *h)
{
  /* Sets everything to 0 up to IP destination address */
  memset (&(h->ipv6), 0, 24);

  return CHILD_OPS (reset_interest_for_hash, type, h);
}

int
ipv6_get_data_locator (hicn_type_t type, const hicn_protocol_t *h,
		       ip_address_t *ip_address)
{
  ip_address->v6 = h->ipv6.daddr;
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_set_data_locator (hicn_type_t type, hicn_protocol_t *h,
		       const ip_address_t *ip_address)
{
  h->ipv6.daddr = ip_address->v6;
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_get_data_name (hicn_type_t type, const hicn_protocol_t *h,
		    hicn_name_t *name)
{
  name->prefix.v6 = h->ipv6.saddr;
  return CHILD_OPS (get_data_name_suffix, type, h, &(name->suffix));
}

int
ipv6_set_data_name (hicn_type_t type, hicn_protocol_t *h,
		    const hicn_name_t *name)
{
  h->ipv6.saddr = name->prefix.v6;
  return CHILD_OPS (set_data_name_suffix, type, h, &(name->suffix));
}

int
ipv6_get_data_name_suffix (hicn_type_t type, const hicn_protocol_t *h,
			   hicn_name_suffix_t *suffix)
{
  return CHILD_OPS (get_data_name_suffix, type, h, suffix);
}

int
ipv6_set_data_name_suffix (hicn_type_t type, hicn_protocol_t *h,
			   const hicn_name_suffix_t *suffix)
{
  return CHILD_OPS (set_data_name_suffix, type, h, suffix);
}

int
ipv6_get_data_pathlabel (hicn_type_t type, const hicn_protocol_t *h,
			 u32 *pathlabel)
{
  return CHILD_OPS (get_data_pathlabel, type, h, pathlabel);
}

int
ipv6_set_data_pathlabel (hicn_type_t type, hicn_protocol_t *h,
			 const u32 pathlabel)
{
  return CHILD_OPS (set_data_pathlabel, type, h, pathlabel);
}

int
ipv6_update_data_pathlabel (hicn_type_t type, hicn_protocol_t *h,
			    const hicn_faceid_t face_id)
{
  return CHILD_OPS (update_data_pathlabel, type, h, face_id);
}

int
ipv6_reset_data_for_hash (hicn_type_t type, hicn_protocol_t *h)
{
  /* IP: Set everithing to 0 up to destination address */
  memset (&h->ipv6, 0, 8);
  /* Clears destination address */
  memset (&(h->ipv6.daddr), 0, 16);

  return CHILD_OPS (reset_data_for_hash, type, h);
}

int
ipv6_get_lifetime (hicn_type_t type, const hicn_protocol_t *h,
		   hicn_lifetime_t *lifetime)
{
  return CHILD_OPS (get_lifetime, type, h, lifetime);
}

int
ipv6_set_lifetime (hicn_type_t type, hicn_protocol_t *h,
		   const hicn_lifetime_t lifetime)
{
  return CHILD_OPS (set_lifetime, type, h, lifetime);
}

int
ipv6_get_source_port (hicn_type_t type, const hicn_protocol_t *h,
		      u16 *source_port)
{
  return CHILD_OPS (get_source_port, type, h, source_port);
}

int
ipv6_get_dest_port (hicn_type_t type, const hicn_protocol_t *h, u16 *dest_port)
{
  return CHILD_OPS (get_dest_port, type, h, dest_port);
}

int
ipv6_set_source_port (hicn_type_t type, hicn_protocol_t *h, u16 source_port)
{
  return CHILD_OPS (set_source_port, type, h, source_port);
}

int
ipv6_set_dest_port (hicn_type_t type, hicn_protocol_t *h, u16 dest_port)
{
  return CHILD_OPS (set_dest_port, type, h, dest_port);
}

int
ipv6_update_checksums (hicn_type_t type, hicn_protocol_t *h, u16 partial_csum,
		       size_t payload_length)
{
  /* Retrieve payload length if not specified */
  if (payload_length == ~0)
    {
      int rc = ipv6_get_payload_length (type, h, &payload_length);
      if (rc < 0)
	return rc;
    }

  /* Build pseudo-header */
  ipv6_pseudo_header_t psh;
  psh.ip_src = h->ipv6.saddr;
  psh.ip_dst = h->ipv6.daddr;
  /* Size is u32 and not u16, we cannot copy and need to care about endianness
   */
  psh.size = htonl (ntohs (h->ipv6.len));
  psh.zeros = 0;
  psh.zero = 0;
  psh.protocol = h->ipv6.nxt;

  /* Compute partial checksum based on pseudo-header */
  if (partial_csum != 0)
    {
      partial_csum = ~partial_csum;
    }
  partial_csum = csum (&psh, IPV6_PSHDRLEN, partial_csum);

  return CHILD_OPS (update_checksums, type, h, partial_csum, payload_length);
}

int
ipv6_verify_checksums (hicn_type_t type, hicn_protocol_t *h, u16 partial_csum,
		       size_t payload_length)
{
  /* Retrieve payload length if not specified */
  if (payload_length == ~0)
    {
      int rc = ipv6_get_payload_length (type, h, &payload_length);
      if (rc < 0)
	return rc;
    }

  /* Build pseudo-header */
  ipv6_pseudo_header_t pseudo;
  pseudo.ip_src = h->ipv6.saddr;
  pseudo.ip_dst = h->ipv6.daddr;
  /* Size is u32 and not u16, we cannot copy and need to care about endianness
   */
  pseudo.size = htonl (ntohs (h->ipv6.len));
  pseudo.zeros = 0;
  pseudo.zero = 0;
  pseudo.protocol = h->ipv6.nxt;

  /* Compute partial checksum based on pseudo-header */
  if (partial_csum != 0)
    {
      partial_csum = ~partial_csum;
    }
  partial_csum = csum (&pseudo, IPV6_PSHDRLEN, partial_csum);

  return CHILD_OPS (verify_checksums, type, h, partial_csum, payload_length);
}

int
ipv6_rewrite_interest (hicn_type_t type, hicn_protocol_t *h,
		       const ip_address_t *addr_new, ip_address_t *addr_old)
{
  // ASSERT(addr_old == NULL);
  addr_old->v6 = h->ipv6.saddr;
  h->ipv6.saddr = addr_new->v6;

  return CHILD_OPS (rewrite_interest, type, h, addr_new, addr_old);
}

int
ipv6_rewrite_data (hicn_type_t type, hicn_protocol_t *h,
		   const ip_address_t *addr_new, ip_address_t *addr_old,
		   const hicn_faceid_t face_id, u8 reset_pl)
{
  // ASSERT(addr_old == NULL);
  addr_old->v6 = h->ipv6.daddr;
  h->ipv6.daddr = addr_new->v6;

  return CHILD_OPS (rewrite_data, type, h, addr_new, addr_old, face_id,
		    reset_pl);
}

int
ipv6_get_length (hicn_type_t type, const hicn_protocol_t *h,
		 size_t *header_length)
{
  *header_length = IPV6_HDRLEN + ntohs (h->ipv6.len);
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_get_current_header_length (hicn_type_t type, const hicn_protocol_t *h,
				size_t *header_length)
{
  *header_length = IPV6_HDRLEN;
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_get_header_length (hicn_type_t type, const hicn_protocol_t *h,
			size_t *header_length)
{
  size_t child_header_length = 0;
  int rc = CHILD_OPS (get_header_length, type, h, &child_header_length);
  if (rc < 0)
    return rc;
  *header_length = IPV6_HDRLEN + child_header_length;
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_get_payload_length (hicn_type_t type, const hicn_protocol_t *h,
			 size_t *payload_length)
{
  size_t child_header_length;
  int rc = CHILD_OPS (get_header_length, type, h, &child_header_length);
  if (rc < 0)
    return rc;
  *payload_length = ntohs (h->ipv6.len) - child_header_length;
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_set_payload_length (hicn_type_t type, hicn_protocol_t *h,
			 size_t payload_length)
{
  size_t child_header_length;
  int rc = CHILD_OPS (get_header_length, type, h, &child_header_length);
  if (rc < 0)
    return rc;
  h->ipv6.len = htons ((u_short) (payload_length + child_header_length));
  return HICN_LIB_ERROR_NONE;
}

int
ipv6_get_payload_type (hicn_type_t type, const hicn_protocol_t *h,
		       hicn_payload_type_t *payload_type)
{
  return CHILD_OPS (get_payload_type, type, h, payload_type);
}

int
ipv6_set_payload_type (hicn_type_t type, hicn_protocol_t *h,
		       hicn_payload_type_t payload_type)
{
  return CHILD_OPS (set_payload_type, type, h, payload_type);
}

int
ipv6_get_signature_size (hicn_type_t type, const hicn_protocol_t *h,
			 size_t *signature_size)
{
  return CHILD_OPS (get_signature_size, type, h, signature_size);
}

int
ipv6_set_signature_size (hicn_type_t type, hicn_protocol_t *h,
			 size_t signature_size)
{
  return CHILD_OPS (set_signature_size, type, h, signature_size);
}

int
ipv6_set_signature_padding (hicn_type_t type, hicn_protocol_t *h,
			    size_t padding)
{
  return CHILD_OPS (set_signature_padding, type, h, padding);
}

int
ipv6_get_signature_padding (hicn_type_t type, const hicn_protocol_t *h,
			    size_t *padding)
{
  return CHILD_OPS (get_signature_padding, type, h, padding);
}

int
ipv6_set_signature_timestamp (hicn_type_t type, hicn_protocol_t *h,
			      uint64_t signature_timestamp)
{
  return CHILD_OPS (set_signature_timestamp, type, h, signature_timestamp);
}

int
ipv6_get_signature_timestamp (hicn_type_t type, const hicn_protocol_t *h,
			      uint64_t *signature_timestamp)
{
  return CHILD_OPS (get_signature_timestamp, type, h, signature_timestamp);
}

int
ipv6_set_validation_algorithm (hicn_type_t type, hicn_protocol_t *h,
			       uint8_t validation_algorithm)
{
  return CHILD_OPS (set_validation_algorithm, type, h, validation_algorithm);
}

int
ipv6_get_validation_algorithm (hicn_type_t type, const hicn_protocol_t *h,
			       uint8_t *validation_algorithm)
{
  return CHILD_OPS (get_validation_algorithm, type, h, validation_algorithm);
}

int
ipv6_set_key_id (hicn_type_t type, hicn_protocol_t *h, uint8_t *key_id)
{
  return CHILD_OPS (set_key_id, type, h, key_id);
}

int
ipv6_get_key_id (hicn_type_t type, hicn_protocol_t *h, uint8_t **key_id,
		 uint8_t *key_id_size)
{
  return CHILD_OPS (get_key_id, type, h, key_id, key_id_size);
}

int
ipv6_get_signature (hicn_type_t type, hicn_protocol_t *h, uint8_t **signature)
{
  return CHILD_OPS (get_signature, type, h, signature);
}

int
ipv6_is_last_data (hicn_type_t type, const hicn_protocol_t *h, int *is_last)
{
  return CHILD_OPS (is_last_data, type, h, is_last);
}

int
ipv6_set_last_data (hicn_type_t type, hicn_protocol_t *h)
{
  return CHILD_OPS (set_last_data, type, h);
}

DECLARE_HICN_OPS (ipv6);

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