aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins/dpdk/ipsec/ipsec.c
blob: c922940ce9a41bb763e70eba9dd4be7dcbc3960e (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
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
/*
 * Copyright (c) 2016 Intel 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/ip/ip.h>
#include <vnet/api_errno.h>
#include <vnet/ipsec/ipsec.h>
#include <vlib/node_funcs.h>

#include <dpdk/device/dpdk.h>
#include <dpdk/ipsec/ipsec.h>
#include <dpdk/ipsec/esp.h>

#define DPDK_CRYPTO_NB_SESS_OBJS  20000
#define DPDK_CRYPTO_CACHE_SIZE	  512
#define DPDK_CRYPTO_PRIV_SIZE	  128
#define DPDK_CRYPTO_N_QUEUE_DESC  1024
#define DPDK_CRYPTO_NB_COPS	  (1024 * 4)

static int
add_del_sa_sess (u32 sa_index, u8 is_add)
{
  dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
  crypto_worker_main_t *cwm;
  u8 skip_master = vlib_num_workers () > 0;

  /* *INDENT-OFF* */
  vec_foreach (cwm, dcm->workers_main)
    {
      crypto_sa_session_t *sa_sess;
      u8 is_outbound;

      if (skip_master)
	{
	  skip_master = 0;
	  continue;
	}

      for (is_outbound = 0; is_outbound < 2; is_outbound++)
	{
	  if (is_add)
	    {
	      pool_get (cwm->sa_sess_d[is_outbound], sa_sess);
	    }
	  else
	    {
	      u8 dev_id;
	      i32 ret;

	      sa_sess = pool_elt_at_index (cwm->sa_sess_d[is_outbound], sa_index);
	      dev_id = cwm->qp_data[sa_sess->qp_index].dev_id;

	      if (!sa_sess->sess)
		continue;
#if DPDK_NO_AEAD
	      ret = (rte_cryptodev_sym_session_free(dev_id, sa_sess->sess) == NULL);
	      ASSERT (ret);
#else
	      ret = rte_cryptodev_sym_session_clear(dev_id, sa_sess->sess);
	      ASSERT (!ret);

	      ret = rte_cryptodev_sym_session_free(sa_sess->sess);
	      ASSERT (!ret);
#endif
	      memset(sa_sess, 0, sizeof(sa_sess[0]));
	    }
	}
    }
  /* *INDENT-OFF* */

  return 0;
}

static void
update_qp_data (crypto_worker_main_t * cwm,
		u8 cdev_id, u16 qp_id, u8 is_outbound, u16 * idx)
{
  crypto_qp_data_t *qpd;

  /* *INDENT-OFF* */
  vec_foreach_index (*idx, cwm->qp_data)
    {
      qpd = vec_elt_at_index(cwm->qp_data, *idx);

      if (qpd->dev_id == cdev_id && qpd->qp_id == qp_id &&
	  qpd->is_outbound == is_outbound)
	  return;
    }
  /* *INDENT-ON* */

  vec_add2_aligned (cwm->qp_data, qpd, 1, CLIB_CACHE_LINE_BYTES);

  qpd->dev_id = cdev_id;
  qpd->qp_id = qp_id;
  qpd->is_outbound = is_outbound;
}

/*
 * return:
 * 	0: already exist
 * 	1: mapped
 */
static int
add_mapping (crypto_worker_main_t * cwm,
	     u8 cdev_id, u16 qp, u8 is_outbound,
	     const struct rte_cryptodev_capabilities *cipher_cap,
	     const struct rte_cryptodev_capabilities *auth_cap)
{
  u16 qp_index;
  uword key = 0, data, *ret;
  crypto_worker_qp_key_t *p_key = (crypto_worker_qp_key_t *) & key;

  p_key->cipher_algo = (u8) cipher_cap->sym.cipher.algo;
  p_key->auth_algo = (u8) auth_cap->sym.auth.algo;
  p_key->is_outbound = is_outbound;
#if ! DPDK_NO_AEAD
  p_key->is_aead = cipher_cap->sym.xform_type == RTE_CRYPTO_SYM_XFORM_AEAD;
#endif

  ret = hash_get (cwm->algo_qp_map, key);
  if (ret)
    return 0;

  update_qp_data (cwm, cdev_id, qp, is_outbound, &qp_index);

  data = (uword) qp_index;
  hash_set (cwm->algo_qp_map, key, data);

  return 1;
}

/*
 * return:
 * 	0: already exist
 * 	1: mapped
 */
static int
add_cdev_mapping (crypto_worker_main_t * cwm,
		  struct rte_cryptodev_info *dev_info, u8 cdev_id,
		  u16 qp, u8 is_outbound)
{
  const struct rte_cryptodev_capabilities *i, *j;
  u32 mapped = 0;

  for (i = dev_info->capabilities; i->op != RTE_CRYPTO_OP_TYPE_UNDEFINED; i++)
    {
#if ! DPDK_NO_AEAD
      if (i->sym.xform_type == RTE_CRYPTO_SYM_XFORM_AEAD)
	{
	  struct rte_cryptodev_capabilities none = { 0 };

	  if (check_algo_is_supported (i, NULL) != 0)
	    continue;

	  none.sym.auth.algo = RTE_CRYPTO_AUTH_NULL;

	  mapped |= add_mapping (cwm, cdev_id, qp, is_outbound, i, &none);
	  continue;
	}
#endif
      if (i->sym.xform_type != RTE_CRYPTO_SYM_XFORM_CIPHER)
	continue;

      if (check_algo_is_supported (i, NULL) != 0)
	continue;

      for (j = dev_info->capabilities; j->op != RTE_CRYPTO_OP_TYPE_UNDEFINED;
	   j++)
	{
	  if (j->sym.xform_type != RTE_CRYPTO_SYM_XFORM_AUTH)
	    continue;

	  if (check_algo_is_supported (j, NULL) != 0)
	    continue;

	  mapped |= add_mapping (cwm, cdev_id, qp, is_outbound, i, j);
	}
    }

  return mapped;
}

static int
check_cryptodev_queues ()
{
  u32 n_qs = 0;
  u8 cdev_id;
  u32 n_req_qs = 2;

  if (vlib_num_workers () > 0)
    n_req_qs = vlib_num_workers () * 2;

  for (cdev_id = 0; cdev_id < rte_cryptodev_count (); cdev_id++)
    {
      struct rte_cryptodev_info cdev_info;

      rte_cryptodev_info_get (cdev_id, &cdev_info);

      if (!
	  (cdev_info.feature_flags & RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING))
	continue;

      n_qs += cdev_info.max_nb_queue_pairs;
    }

  if (n_qs >= n_req_qs)
    return 0;
  else
    return -1;
}

static clib_error_t *
dpdk_ipsec_check_support (ipsec_sa_t * sa)
{
  if (sa->crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128)
    {
      if (sa->integ_alg != IPSEC_INTEG_ALG_NONE)
	return clib_error_return (0, "unsupported integ-alg %U with "
				  "crypto-alg aes-gcm-128",
				  format_ipsec_integ_alg, sa->integ_alg);
#if DPDK_NO_AEAD
      sa->integ_alg = IPSEC_INTEG_ALG_AES_GCM_128;
#endif
    }
#if DPDK_NO_AEAD
  else if (sa->crypto_alg == IPSEC_CRYPTO_ALG_NONE ||
	   sa->integ_alg == IPSEC_INTEG_ALG_NONE ||
	   sa->integ_alg == IPSEC_INTEG_ALG_AES_GCM_128)
#else
  else if (sa->integ_alg == IPSEC_INTEG_ALG_NONE)
#endif
    return clib_error_return (0,
			      "unsupported integ-alg %U with crypto-alg %U",
			      format_ipsec_integ_alg, sa->integ_alg,
			      format_ipsec_crypto_alg, sa->crypto_alg);

  return 0;
}

static uword
dpdk_ipsec_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
		    vlib_frame_t * f)
{
  ipsec_main_t *im = &ipsec_main;
  dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
  vlib_thread_main_t *tm = vlib_get_thread_main ();
  struct rte_cryptodev_config dev_conf;
  struct rte_cryptodev_qp_conf qp_conf;
  struct rte_cryptodev_info cdev_info;
  struct rte_mempool *rmp;
  i32 dev_id, ret;
  u32 i, skip_master;
#if ! DPDK_NO_AEAD
  u32 max_sess_size = 0, sess_size;
  i8 socket_id;
#endif

  if (check_cryptodev_queues () < 0)
    {
      clib_warning ("not enough Cryptodevs, default to OpenSSL IPsec");
      return 0;
    }
  dcm->enabled = 1;

  vec_alloc (dcm->workers_main, tm->n_vlib_mains);
  _vec_len (dcm->workers_main) = tm->n_vlib_mains;

  fprintf (stdout, "DPDK Cryptodevs info:\n");
  fprintf (stdout, "dev_id\tn_qp\tnb_obj\tcache_size\n");
  /* HW cryptodevs have higher dev_id, use HW first */
  for (dev_id = rte_cryptodev_count () - 1; dev_id >= 0; dev_id--)
    {
      u16 max_nb_qp, qp = 0;
      skip_master = vlib_num_workers () > 0;

      rte_cryptodev_info_get (dev_id, &cdev_info);

      if (!
	  (cdev_info.feature_flags & RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING))
	continue;

      max_nb_qp = cdev_info.max_nb_queue_pairs;

      for (i = 0; i < tm->n_vlib_mains; i++)
	{
	  u8 is_outbound;
	  crypto_worker_main_t *cwm;
	  uword *map;

	  if (skip_master)
	    {
	      skip_master = 0;
	      continue;
	    }

	  cwm = vec_elt_at_index (dcm->workers_main, i);
	  map = cwm->algo_qp_map;

	  if (!map)
	    {
	      map = hash_create (0, sizeof (crypto_worker_qp_key_t));
	      if (!map)
		{
		  clib_warning ("unable to create hash table for worker %u",
				vlib_mains[i]->thread_index);
		  goto error;
		}
	      cwm->algo_qp_map = map;
	    }

	  for (is_outbound = 0; is_outbound < 2 && qp < max_nb_qp;
	       is_outbound++)
	    qp += add_cdev_mapping (cwm, &cdev_info, dev_id, qp, is_outbound);
	}

      if (qp == 0)
	continue;

      dev_conf.socket_id = rte_cryptodev_socket_id (dev_id);
      dev_conf.nb_queue_pairs = cdev_info.max_nb_queue_pairs;
#if DPDK_NO_AEAD
      dev_conf.session_mp.nb_objs = DPDK_CRYPTO_NB_SESS_OBJS;
      dev_conf.session_mp.cache_size = DPDK_CRYPTO_CACHE_SIZE;
#endif
      ret = rte_cryptodev_configure (dev_id, &dev_conf);
      if (ret < 0)
	{
	  clib_warning ("cryptodev %u config error", dev_id);
	  goto error;
	}

      qp_conf.nb_descriptors = DPDK_CRYPTO_N_QUEUE_DESC;
      for (qp = 0; qp < dev_conf.nb_queue_pairs; qp++)
	{
#if DPDK_NO_AEAD
	  ret = rte_cryptodev_queue_pair_setup (dev_id, qp, &qp_conf,
						dev_conf.socket_id);
#else
	  ret = rte_cryptodev_queue_pair_setup (dev_id, qp, &qp_conf,
						dev_conf.socket_id, NULL);
#endif
	  if (ret < 0)
	    {
	      clib_warning ("cryptodev %u qp %u setup error", dev_id, qp);
	      goto error;
	    }
	}
      vec_validate (dcm->cop_pools, dev_conf.socket_id);

#if ! DPDK_NO_AEAD
      sess_size = rte_cryptodev_get_private_session_size (dev_id);
      if (sess_size > max_sess_size)
	max_sess_size = sess_size;
#endif

      if (!vec_elt (dcm->cop_pools, dev_conf.socket_id))
	{
	  u8 *pool_name = format (0, "crypto_op_pool_socket%u%c",
				  dev_conf.socket_id, 0);

	  rmp = rte_crypto_op_pool_create ((char *) pool_name,
					   RTE_CRYPTO_OP_TYPE_SYMMETRIC,
					   DPDK_CRYPTO_NB_COPS *
					   (1 + vlib_num_workers ()),
					   DPDK_CRYPTO_CACHE_SIZE,
					   DPDK_CRYPTO_PRIV_SIZE,
					   dev_conf.socket_id);

	  if (!rmp)
	    {
	      clib_warning ("failed to allocate %s", pool_name);
	      vec_free (pool_name);
	      goto error;
	    }
	  vec_free (pool_name);
	  vec_elt (dcm->cop_pools, dev_conf.socket_id) = rmp;
	}

      fprintf (stdout, "%u\t%u\t%u\t%u\n", dev_id, dev_conf.nb_queue_pairs,
	       DPDK_CRYPTO_NB_SESS_OBJS, DPDK_CRYPTO_CACHE_SIZE);
    }

#if ! DPDK_NO_AEAD
  /* *INDENT-OFF* */
  vec_foreach_index (socket_id, dcm->cop_pools)
    {
      u8 *pool_name;

      if (!vec_elt (dcm->cop_pools, socket_id))
	continue;

      vec_validate (dcm->sess_h_pools, socket_id);
      pool_name = format (0, "crypto_sess_h_socket%u%c",
			      socket_id, 0);
      rmp =
	rte_mempool_create((i8 *)pool_name, DPDK_CRYPTO_NB_SESS_OBJS,
			   rte_cryptodev_get_header_session_size (),
			   512, 0, NULL, NULL, NULL, NULL,
			   socket_id, 0);
      if (!rmp)
	{
	  clib_warning ("failed to allocate %s", pool_name);
	  vec_free (pool_name);
	  goto error;
	}
      vec_free (pool_name);
      vec_elt (dcm->sess_h_pools, socket_id) = rmp;

      vec_validate (dcm->sess_pools, socket_id);
      pool_name = format (0, "crypto_sess_socket%u%c",
			      socket_id, 0);
      rmp =
	rte_mempool_create((i8 *)pool_name, DPDK_CRYPTO_NB_SESS_OBJS,
			   max_sess_size, 512, 0, NULL, NULL, NULL, NULL,
			   socket_id, 0);
      if (!rmp)
	{
	  clib_warning ("failed to allocate %s", pool_name);
	  vec_free (pool_name);
	  goto error;
	}
      vec_free (pool_name);
      vec_elt (dcm->sess_pools, socket_id) = rmp;
    }
  /* *INDENT-ON* */
#endif

  dpdk_esp_init ();

  /* Add new next node and set as default */
  vlib_node_t *node, *next_node;

  next_node = vlib_get_node_by_name (vm, (u8 *) "dpdk-esp-encrypt");
  ASSERT (next_node);
  node = vlib_get_node_by_name (vm, (u8 *) "ipsec-output-ip4");
  ASSERT (node);
  im->esp_encrypt_node_index = next_node->index;
  im->esp_encrypt_next_index =
    vlib_node_add_next (vm, node->index, next_node->index);

  next_node = vlib_get_node_by_name (vm, (u8 *) "dpdk-esp-decrypt");
  ASSERT (next_node);
  node = vlib_get_node_by_name (vm, (u8 *) "ipsec-input-ip4");
  ASSERT (node);
  im->esp_decrypt_node_index = next_node->index;
  im->esp_decrypt_next_index =
    vlib_node_add_next (vm, node->index, next_node->index);

  im->cb.check_support_cb = dpdk_ipsec_check_support;
  im->cb.add_del_sa_sess_cb = add_del_sa_sess;

  for (i = 1; i < tm->n_vlib_mains; i++)
    vlib_node_set_state (vlib_mains[i], dpdk_crypto_input_node.index,
			 VLIB_NODE_STATE_POLLING);

  /* TODO cryptodev counters */

  return 0;

error:
  ;
  crypto_worker_main_t *cwm;
  struct rte_mempool **mp;
  /* *INDENT-OFF* */
  vec_foreach (cwm, dcm->workers_main)
    hash_free (cwm->algo_qp_map);

  vec_foreach (mp, dcm->cop_pools)
    {
      if (mp)
	rte_mempool_free (mp[0]);
    }
  /* *INDENT-ON* */
  vec_free (dcm->workers_main);
  vec_free (dcm->cop_pools);

  return 0;
}

/* *INDENT-OFF* */
VLIB_REGISTER_NODE (dpdk_ipsec_process_node,static) = {
    .function = dpdk_ipsec_process,
    .type = VLIB_NODE_TYPE_PROCESS,
    .name = "dpdk-ipsec-process",
    .process_log2_n_stack_bytes = 17,
};
/* *INDENT-ON* */

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