summaryrefslogtreecommitdiffstats
path: root/src/plugins/dpdk/ipsec/esp.h
blob: 308a66afe748be58c470e601ca3dc24c8f1f564c (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
/*
 * 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.
 */
#ifndef __DPDK_ESP_H__
#define __DPDK_ESP_H__

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

typedef struct
{
  enum rte_crypto_cipher_algorithm algo;
#if ! DPDK_NO_AEAD
  enum rte_crypto_aead_algorithm aead_algo;
#endif
  u8 key_len;
  u8 iv_len;
} dpdk_esp_crypto_alg_t;

typedef struct
{
  enum rte_crypto_auth_algorithm algo;
  u8 trunc_size;
} dpdk_esp_integ_alg_t;

typedef struct
{
  dpdk_esp_crypto_alg_t *esp_crypto_algs;
  dpdk_esp_integ_alg_t *esp_integ_algs;
} dpdk_esp_main_t;

dpdk_esp_main_t dpdk_esp_main;

static_always_inline void
dpdk_esp_init ()
{
  dpdk_esp_main_t *em = &dpdk_esp_main;
  dpdk_esp_integ_alg_t *i;
  dpdk_esp_crypto_alg_t *c;

  vec_validate (em->esp_crypto_algs, IPSEC_CRYPTO_N_ALG - 1);

  c = &em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128];
  c->algo = RTE_CRYPTO_CIPHER_AES_CBC;
  c->key_len = 16;
  c->iv_len = 16;

  c = &em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192];
  c->algo = RTE_CRYPTO_CIPHER_AES_CBC;
  c->key_len = 24;
  c->iv_len = 16;

  c = &em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256];
  c->algo = RTE_CRYPTO_CIPHER_AES_CBC;
  c->key_len = 32;
  c->iv_len = 16;

  c = &em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_GCM_128];
#if DPDK_NO_AEAD
  c->algo = RTE_CRYPTO_CIPHER_AES_GCM;
#else
  c->aead_algo = RTE_CRYPTO_AEAD_AES_GCM;
#endif
  c->key_len = 16;
  c->iv_len = 8;

  vec_validate (em->esp_integ_algs, IPSEC_INTEG_N_ALG - 1);

  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA1_96];
  i->algo = RTE_CRYPTO_AUTH_SHA1_HMAC;
  i->trunc_size = 12;

  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_96];
  i->algo = RTE_CRYPTO_AUTH_SHA256_HMAC;
  i->trunc_size = 12;

  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_128];
  i->algo = RTE_CRYPTO_AUTH_SHA256_HMAC;
  i->trunc_size = 16;

  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_384_192];
  i->algo = RTE_CRYPTO_AUTH_SHA384_HMAC;
  i->trunc_size = 24;

  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_512_256];
  i->algo = RTE_CRYPTO_AUTH_SHA512_HMAC;
  i->trunc_size = 32;
#if DPDK_NO_AEAD
  i = &em->esp_integ_algs[IPSEC_INTEG_ALG_AES_GCM_128];
  i->algo = RTE_CRYPTO_AUTH_AES_GCM;
  i->trunc_size = 16;
#endif
}

static_always_inline int
translate_crypto_algo (ipsec_crypto_alg_t crypto_algo,
		       struct rte_crypto_sym_xform *xform, u8 use_esn)
{
#if ! DPDK_NO_AEAD
  const u16 iv_off =
    sizeof (struct rte_crypto_op) + sizeof (struct rte_crypto_sym_op) +
    offsetof (dpdk_cop_priv_t, cb);
#endif

  xform->type = RTE_CRYPTO_SYM_XFORM_CIPHER;

  switch (crypto_algo)
    {
    case IPSEC_CRYPTO_ALG_NONE:
#if ! DPDK_NO_AEAD
      xform->cipher.iv.offset = iv_off;
      xform->cipher.iv.length = 0;
#endif
      xform->cipher.algo = RTE_CRYPTO_CIPHER_NULL;
      break;
    case IPSEC_CRYPTO_ALG_AES_CBC_128:
    case IPSEC_CRYPTO_ALG_AES_CBC_192:
    case IPSEC_CRYPTO_ALG_AES_CBC_256:
#if ! DPDK_NO_AEAD
      xform->cipher.iv.offset = iv_off;
      xform->cipher.iv.length = 16;
#endif
      xform->cipher.algo = RTE_CRYPTO_CIPHER_AES_CBC;
      break;
    case IPSEC_CRYPTO_ALG_AES_GCM_128:
#if DPDK_NO_AEAD
      xform->cipher.algo = RTE_CRYPTO_CIPHER_AES_GCM;
#else
      xform->type = RTE_CRYPTO_SYM_XFORM_AEAD;
      xform->aead.algo = RTE_CRYPTO_AEAD_AES_GCM;
      xform->aead.iv.offset = iv_off;
      xform->aead.iv.length = 12;	/* GCM IV, not ESP IV */
      xform->aead.digest_length = 16;
      xform->aead.aad_length = use_esn ? 12 : 8;
#endif
      break;
    default:
      return -1;
    }

  return 0;
}

static_always_inline int
translate_integ_algo (ipsec_integ_alg_t integ_alg,
		      struct rte_crypto_sym_xform *auth_xform, u8 use_esn)
{
  auth_xform->type = RTE_CRYPTO_SYM_XFORM_AUTH;

  switch (integ_alg)
    {
    case IPSEC_INTEG_ALG_NONE:
      auth_xform->auth.algo = RTE_CRYPTO_AUTH_NULL;
      auth_xform->auth.digest_length = 0;
      break;
    case IPSEC_INTEG_ALG_SHA1_96:
      auth_xform->auth.algo = RTE_CRYPTO_AUTH_SHA1_HMAC;
      auth_xform->auth.digest_length = 12;
      break;
    case IPSEC_INTEG_ALG_SHA_256_96:
      auth_xform->auth.algo = RTE_CRYPTO_AUTH_SHA256_HMAC;
      auth_xform->auth.digest_length = 12;
      break;
    case IPSEC_INTEG_ALG_SHA_256_128:
      auth_xform->auth.algo = RTE_CRYPTO_AUTH_SHA256_HMAC;
      auth_xform->auth.digest_length = 16;
      break;
    case IPSEC_INTEG_ALG_SHA_384_192:
      auth_xform->auth.algo = RTE_CRYPTO_AUTH_SHA384_HMAC;
      auth_xform->auth.digest_length = 24;
      break;
    case IPSEC_INTEG_ALG_SHA_512_256:
      auth_xform->auth.algo = RTE_CRYPTO_AUTH_SHA512_HMAC;
      auth_xform->auth.digest_length = 32;
      break;
#if DPDK_NO_AEAD
    case IPSEC_INTEG_ALG_AES_GCM_128:
      auth_xform->auth.algo = RTE_CRYPTO_AUTH_AES_GCM;
      auth_xform->auth.digest_length = 16;
      auth_xform->auth.add_auth_data_length = use_esn ? 12 : 8;
      break;
#endif
    default:
      return -1;
    }

  return 0;
}

static_always_inline i32
create_sym_sess (ipsec_sa_t * sa, crypto_sa_session_t * sa_sess,
		 u8 is_outbound)
{
  u32 thread_index = vlib_get_thread_index ();
  dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
  crypto_worker_main_t *cwm = &dcm->workers_main[thread_index];
  struct rte_crypto_sym_xform cipher_xform = { 0 };
  struct rte_crypto_sym_xform auth_xform = { 0 };
  struct rte_crypto_sym_xform *xfs;
  uword key = 0, *data;
  crypto_worker_qp_key_t *p_key = (crypto_worker_qp_key_t *) & key;
#if ! DPDK_NO_AEAD
  i32 socket_id = rte_socket_id ();
  i32 ret;
#endif

  if (sa->crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128)
    {
      sa->crypto_key_len -= 4;
      clib_memcpy (&sa->salt, &sa->crypto_key[sa->crypto_key_len], 4);
    }
  else
    {
      u32 seed = (u32) clib_cpu_time_now ();
      sa->salt = random_u32 (&seed);
    }

  if (translate_crypto_algo (sa->crypto_alg, &cipher_xform, sa->use_esn) < 0)
    return -1;
  p_key->cipher_algo = cipher_xform.cipher.algo;

  if (translate_integ_algo (sa->integ_alg, &auth_xform, sa->use_esn) < 0)
    return -1;
  p_key->auth_algo = auth_xform.auth.algo;

#if ! DPDK_NO_AEAD
  if (sa->crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128)
    {
      cipher_xform.aead.key.data = sa->crypto_key;
      cipher_xform.aead.key.length = sa->crypto_key_len;

      if (is_outbound)
	cipher_xform.cipher.op = RTE_CRYPTO_AEAD_OP_ENCRYPT;
      else
	cipher_xform.cipher.op = RTE_CRYPTO_AEAD_OP_DECRYPT;
      cipher_xform.next = NULL;
      xfs = &cipher_xform;
      p_key->is_aead = 1;
    }
  else				/* Cipher + Auth */
#endif
    {
      cipher_xform.cipher.key.data = sa->crypto_key;
      cipher_xform.cipher.key.length = sa->crypto_key_len;

      auth_xform.auth.key.data = sa->integ_key;
      auth_xform.auth.key.length = sa->integ_key_len;

      if (is_outbound)
	{
	  cipher_xform.cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT;
	  auth_xform.auth.op = RTE_CRYPTO_AUTH_OP_GENERATE;
	  cipher_xform.next = &auth_xform;
	  xfs = &cipher_xform;
	}
      else
	{
	  cipher_xform.cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT;
	  auth_xform.auth.op = RTE_CRYPTO_AUTH_OP_VERIFY;
	  auth_xform.next = &cipher_xform;
	  xfs = &auth_xform;
	}
      p_key->is_aead = 0;
    }

  p_key->is_outbound = is_outbound;

  data = hash_get (cwm->algo_qp_map, key);
  if (!data)
    return -1;

#if DPDK_NO_AEAD
  sa_sess->sess =
    rte_cryptodev_sym_session_create (cwm->qp_data[*data].dev_id, xfs);
  if (!sa_sess->sess)
    return -1;
#else
  sa_sess->sess =
    rte_cryptodev_sym_session_create (dcm->sess_h_pools[socket_id]);
  if (!sa_sess->sess)
    return -1;

  ret =
    rte_cryptodev_sym_session_init (cwm->qp_data[*data].dev_id, sa_sess->sess,
				    xfs, dcm->sess_pools[socket_id]);
  if (ret)
    return -1;
#endif

  sa_sess->qp_index = (u8) * data;

  return 0;
}

static_always_inline void
crypto_set_icb (dpdk_gcm_cnt_blk * icb, u32 salt, u32 seq, u32 seq_hi)
{
  icb->salt = salt;
  icb->iv[0] = seq;
  icb->iv[1] = seq_hi;
#if DPDK_NO_AEAD
  icb->cnt = clib_host_to_net_u32 (1);
#endif
}

#define __unused __attribute__((unused))
static_always_inline void
crypto_op_setup (u8 is_aead, struct rte_mbuf *mb0,
		 struct rte_crypto_op *cop, void *session,
		 u32 cipher_off, u32 cipher_len,
		 u8 * icb __unused, u32 iv_size __unused,
		 u32 auth_off, u32 auth_len,
		 u8 * aad __unused, u32 aad_size __unused,
		 u8 * digest, u64 digest_paddr, u32 digest_size __unused)
{
  struct rte_crypto_sym_op *sym_cop;

  sym_cop = (struct rte_crypto_sym_op *) (cop + 1);

  sym_cop->m_src = mb0;
  rte_crypto_op_attach_sym_session (cop, session);

  if (!digest_paddr)
    digest_paddr =
      rte_pktmbuf_mtophys_offset (mb0, (uintptr_t) digest - (uintptr_t) mb0);

#if DPDK_NO_AEAD
  sym_cop->cipher.data.offset = cipher_off;
  sym_cop->cipher.data.length = cipher_len;

  sym_cop->cipher.iv.data = icb;
  sym_cop->cipher.iv.phys_addr =
    cop->phys_addr + (uintptr_t) icb - (uintptr_t) cop;
  sym_cop->cipher.iv.length = iv_size;

  if (is_aead)
    {
      sym_cop->auth.aad.data = aad;
      sym_cop->auth.aad.phys_addr =
	cop->phys_addr + (uintptr_t) aad - (uintptr_t) cop;
      sym_cop->auth.aad.length = aad_size;
    }
  else
    {
      sym_cop->auth.data.offset = auth_off;
      sym_cop->auth.data.length = auth_len;
    }

  sym_cop->auth.digest.data = digest;
  sym_cop->auth.digest.phys_addr = digest_paddr;
  sym_cop->auth.digest.length = digest_size;
#else /* ! DPDK_NO_AEAD */
  if (is_aead)
    {
      sym_cop->aead.data.offset = cipher_off;
      sym_cop->aead.data.length = cipher_len;

      sym_cop->aead.aad.data = aad;
      sym_cop->aead.aad.phys_addr =
	cop->phys_addr + (uintptr_t) aad - (uintptr_t) cop;

      sym_cop->aead.digest.data = digest;
      sym_cop->aead.digest.phys_addr = digest_paddr;
    }
  else
    {
      sym_cop->cipher.data.offset = cipher_off;
      sym_cop->cipher.data.length = cipher_len;

      sym_cop->auth.data.offset = auth_off;
      sym_cop->auth.data.length = auth_len;

      sym_cop->auth.digest.data = digest;
      sym_cop->auth.digest.phys_addr = digest_paddr;
    }
#endif /* DPDK_NO_AEAD */
}

#undef __unused

#endif /* __DPDK_ESP_H__ */

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