drivers/crypto/octeontx2/otx2_cryptodev_sec.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright (C) 2020 Marvell International Ltd.
   3  */
   4
   5 #include <rte_cryptodev.h>
   6 #include <rte_esp.h>
   7 #include <rte_ethdev.h>
   8 #include <rte_ip.h>
   9 #include <rte_malloc.h>
  10 #include <rte_security.h>
  11 #include <rte_security_driver.h>
  12 #include <rte_udp.h>
  13
  14 #include "otx2_cryptodev.h"
  15 #include "otx2_cryptodev_capabilities.h"
  16 #include "otx2_cryptodev_hw_access.h"
  17 #include "otx2_cryptodev_ops.h"
  18 #include "otx2_cryptodev_sec.h"
  19 #include "otx2_security.h"
  20
  21 static int
  22 ipsec_lp_len_precalc(struct rte_security_ipsec_xform *ipsec,
  23                 struct rte_crypto_sym_xform *xform,
  24                 struct otx2_sec_session_ipsec_lp *lp)
  25 {
  26         struct rte_crypto_sym_xform *cipher_xform, *auth_xform;
  27
  28         if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4)
  29                 lp->partial_len = sizeof(struct rte_ipv4_hdr);
  30         else if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV6)
  31                 lp->partial_len = sizeof(struct rte_ipv6_hdr);
  32         else
  33                 return -EINVAL;
  34
  35         if (ipsec->proto == RTE_SECURITY_IPSEC_SA_PROTO_ESP) {
  36                 lp->partial_len += sizeof(struct rte_esp_hdr);
  37                 lp->roundup_len = sizeof(struct rte_esp_tail);
  38         } else if (ipsec->proto == RTE_SECURITY_IPSEC_SA_PROTO_AH) {
  39                 lp->partial_len += OTX2_SEC_AH_HDR_LEN;
  40         } else {
  41                 return -EINVAL;
  42         }
  43
  44         if (ipsec->options.udp_encap)
  45                 lp->partial_len += sizeof(struct rte_udp_hdr);
  46
  47         if (xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
  48                 if (xform->aead.algo == RTE_CRYPTO_AEAD_AES_GCM) {
  49                         lp->partial_len += OTX2_SEC_AES_GCM_IV_LEN;
  50                         lp->partial_len += OTX2_SEC_AES_GCM_MAC_LEN;
  51                         lp->roundup_byte = OTX2_SEC_AES_GCM_ROUNDUP_BYTE_LEN;
  52                         return 0;
  53                 } else {
  54                         return -EINVAL;
  55                 }
  56         }
  57
  58         if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_EGRESS) {
  59                 cipher_xform = xform;
  60                 auth_xform = xform->next;
  61         } else if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS) {
  62                 auth_xform = xform;
  63                 cipher_xform = xform->next;
  64         } else {
  65                 return -EINVAL;
  66         }
  67
  68         if (cipher_xform->cipher.algo == RTE_CRYPTO_CIPHER_AES_CBC) {
  69                 lp->partial_len += OTX2_SEC_AES_CBC_IV_LEN;
  70                 lp->roundup_byte = OTX2_SEC_AES_CBC_ROUNDUP_BYTE_LEN;
  71         } else {
  72                 return -EINVAL;
  73         }
  74
  75         if (auth_xform->auth.algo == RTE_CRYPTO_AUTH_SHA1_HMAC)
  76                 lp->partial_len += OTX2_SEC_SHA1_HMAC_LEN;
  77         else
  78                 return -EINVAL;
  79
  80         return 0;
  81 }
  82
  83 static int
  84 otx2_cpt_enq_sa_write(struct otx2_sec_session_ipsec_lp *lp,
  85                       struct otx2_cpt_qp *qptr, uint8_t opcode)
  86 {
  87         uint64_t lmt_status, time_out;
  88         void *lmtline = qptr->lmtline;
  89         struct otx2_cpt_inst_s inst;
  90         struct otx2_cpt_res *res;
  91         uint64_t *mdata;
  92         int ret = 0;
  93
  94         if (unlikely(rte_mempool_get(qptr->meta_info.pool,
  95                                      (void **)&mdata) < 0))
  96                 return -ENOMEM;
  97
  98         res = (struct otx2_cpt_res *)RTE_PTR_ALIGN(mdata, 16);
  99         res->compcode = CPT_9X_COMP_E_NOTDONE;
 100
 101         inst.opcode = opcode | (lp->ctx_len << 8);
 102         inst.param1 = 0;
 103         inst.param2 = 0;
 104         inst.dlen = lp->ctx_len << 3;
 105         inst.dptr = rte_mempool_virt2iova(lp);
 106         inst.rptr = 0;
 107         inst.cptr = rte_mempool_virt2iova(lp);
 108         inst.egrp  = OTX2_CPT_EGRP_SE;
 109
 110         inst.u64[0] = 0;
 111         inst.u64[2] = 0;
 112         inst.u64[3] = 0;
 113         inst.res_addr = rte_mempool_virt2iova(res);
 114
 115         rte_io_wmb();
 116
 117         do {
 118                 /* Copy CPT command to LMTLINE */
 119                 otx2_lmt_mov(lmtline, &inst, 2);
 120                 lmt_status = otx2_lmt_submit(qptr->lf_nq_reg);
 121         } while (lmt_status == 0);
 122
 123         time_out = rte_get_timer_cycles() +
 124                         DEFAULT_COMMAND_TIMEOUT * rte_get_timer_hz();
 125
 126         while (res->compcode == CPT_9X_COMP_E_NOTDONE) {
 127                 if (rte_get_timer_cycles() > time_out) {
 128                         rte_mempool_put(qptr->meta_info.pool, mdata);
 129                         otx2_err("Request timed out");
 130                         return -ETIMEDOUT;
 131                 }
 132             rte_io_rmb();
 133         }
 134
 135         if (unlikely(res->compcode != CPT_9X_COMP_E_GOOD)) {
 136                 ret = res->compcode;
 137                 switch (ret) {
 138                 case CPT_9X_COMP_E_INSTERR:
 139                         otx2_err("Request failed with instruction error");
 140                         break;
 141                 case CPT_9X_COMP_E_FAULT:
 142                         otx2_err("Request failed with DMA fault");
 143                         break;
 144                 case CPT_9X_COMP_E_HWERR:
 145                         otx2_err("Request failed with hardware error");
 146                         break;
 147                 default:
 148                         otx2_err("Request failed with unknown hardware "
 149                                  "completion code : 0x%x", ret);
 150                 }
 151                 goto mempool_put;
 152         }
 153
 154         if (unlikely(res->uc_compcode != OTX2_IPSEC_PO_CC_SUCCESS)) {
 155                 ret = res->uc_compcode;
 156                 switch (ret) {
 157                 case OTX2_IPSEC_PO_CC_AUTH_UNSUPPORTED:
 158                         otx2_err("Invalid auth type");
 159                         break;
 160                 case OTX2_IPSEC_PO_CC_ENCRYPT_UNSUPPORTED:
 161                         otx2_err("Invalid encrypt type");
 162                         break;
 163                 default:
 164                         otx2_err("Request failed with unknown microcode "
 165                                  "completion code : 0x%x", ret);
 166                 }
 167         }
 168
 169 mempool_put:
 170         rte_mempool_put(qptr->meta_info.pool, mdata);
 171         return ret;
 172 }
 173
 174 static void
 175 set_session_misc_attributes(struct otx2_sec_session_ipsec_lp *sess,
 176                             struct rte_crypto_sym_xform *crypto_xform,
 177                             struct rte_crypto_sym_xform *auth_xform,
 178                             struct rte_crypto_sym_xform *cipher_xform)
 179 {
 180         if (crypto_xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 181                 sess->iv_offset = crypto_xform->aead.iv.offset;
 182                 sess->iv_length = crypto_xform->aead.iv.length;
 183                 sess->aad_length = crypto_xform->aead.aad_length;
 184                 sess->mac_len = crypto_xform->aead.digest_length;
 185         } else {
 186                 sess->iv_offset = cipher_xform->cipher.iv.offset;
 187                 sess->iv_length = cipher_xform->cipher.iv.length;
 188                 sess->auth_iv_offset = auth_xform->auth.iv.offset;
 189                 sess->auth_iv_length = auth_xform->auth.iv.length;
 190                 sess->mac_len = auth_xform->auth.digest_length;
 191         }
 192
 193         sess->ucmd_param1 = OTX2_IPSEC_PO_PER_PKT_IV;
 194         sess->ucmd_param2 = 0;
 195 }
 196
 197 static int
 198 crypto_sec_ipsec_outb_session_create(struct rte_cryptodev *crypto_dev,
 199                                      struct rte_security_ipsec_xform *ipsec,
 200                                      struct rte_crypto_sym_xform *crypto_xform,
 201                                      struct rte_security_session *sec_sess)
 202 {
 203         struct rte_crypto_sym_xform *auth_xform, *cipher_xform;
 204         const uint8_t *cipher_key, *auth_key;
 205         struct otx2_sec_session_ipsec_lp *lp;
 206         struct otx2_ipsec_po_sa_ctl *ctl;
 207         int cipher_key_len, auth_key_len;
 208         struct otx2_ipsec_po_out_sa *sa;
 209         struct otx2_sec_session *sess;
 210         struct otx2_cpt_inst_s inst;
 211         struct rte_ipv6_hdr *ip6;
 212         struct rte_ipv4_hdr *ip;
 213         int ret;
 214
 215         sess = get_sec_session_private_data(sec_sess);
 216         lp = &sess->ipsec.lp;
 217
 218         sa = &lp->out_sa;
 219         ctl = &sa->ctl;
 220         if (ctl->valid) {
 221                 otx2_err("SA already registered");
 222                 return -EINVAL;
 223         }
 224
 225         memset(sa, 0, sizeof(struct otx2_ipsec_po_out_sa));
 226
 227         /* Initialize lookaside ipsec private data */
 228         lp->ip_id = 0;
 229         lp->seq_lo = 1;
 230         lp->seq_hi = 0;
 231         lp->tunnel_type = ipsec->tunnel.type;
 232
 233         ret = ipsec_po_sa_ctl_set(ipsec, crypto_xform, ctl);
 234         if (ret)
 235                 return ret;
 236
 237         ret = ipsec_lp_len_precalc(ipsec, crypto_xform, lp);
 238         if (ret)
 239                 return ret;
 240
 241         memcpy(sa->iv.gcm.nonce, &ipsec->salt, 4);
 242
 243         if (ipsec->options.udp_encap) {
 244                 sa->udp_src = 4500;
 245                 sa->udp_dst = 4500;
 246         }
 247
 248         if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) {
 249                 /* Start ip id from 1 */
 250                 lp->ip_id = 1;
 251
 252                 if (ipsec->tunnel.type == RTE_SECURITY_IPSEC_TUNNEL_IPV4) {
 253                         ip = &sa->template.ipv4_hdr;
 254                         ip->version_ihl = RTE_IPV4_VHL_DEF;
 255                         ip->next_proto_id = IPPROTO_ESP;
 256                         ip->time_to_live = ipsec->tunnel.ipv4.ttl;
 257                         ip->type_of_service |= (ipsec->tunnel.ipv4.dscp << 2);
 258                         if (ipsec->tunnel.ipv4.df)
 259                                 ip->fragment_offset = BIT(14);
 260                         memcpy(&ip->src_addr, &ipsec->tunnel.ipv4.src_ip,
 261                                 sizeof(struct in_addr));
 262                         memcpy(&ip->dst_addr, &ipsec->tunnel.ipv4.dst_ip,
 263                                 sizeof(struct in_addr));
 264                 } else if (ipsec->tunnel.type ==
 265                                 RTE_SECURITY_IPSEC_TUNNEL_IPV6) {
 266                         ip6 = &sa->template.ipv6_hdr;
 267                         ip6->vtc_flow = rte_cpu_to_be_32(0x60000000 |
 268                                 ((ipsec->tunnel.ipv6.dscp <<
 269                                         RTE_IPV6_HDR_TC_SHIFT) &
 270                                         RTE_IPV6_HDR_TC_MASK) |
 271                                 ((ipsec->tunnel.ipv6.flabel <<
 272                                         RTE_IPV6_HDR_FL_SHIFT) &
 273                                         RTE_IPV6_HDR_FL_MASK));
 274                         ip6->hop_limits = ipsec->tunnel.ipv6.hlimit;
 275                         ip6->proto = (ipsec->proto ==
 276                                         RTE_SECURITY_IPSEC_SA_PROTO_ESP) ?
 277                                         IPPROTO_ESP : IPPROTO_AH;
 278                         memcpy(&ip6->src_addr, &ipsec->tunnel.ipv6.src_addr,
 279                                 sizeof(struct in6_addr));
 280                         memcpy(&ip6->dst_addr, &ipsec->tunnel.ipv6.dst_addr,
 281                                 sizeof(struct in6_addr));
 282                 } else {
 283                         return -EINVAL;
 284                 }
 285         } else {
 286                 return -EINVAL;
 287         }
 288
 289         cipher_xform = crypto_xform;
 290         auth_xform = crypto_xform->next;
 291
 292         cipher_key_len = 0;
 293         auth_key_len = 0;
 294
 295         if (crypto_xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 296                 cipher_key = crypto_xform->aead.key.data;
 297                 cipher_key_len = crypto_xform->aead.key.length;
 298
 299                 lp->ctx_len = sizeof(struct otx2_ipsec_po_out_sa);
 300                 lp->ctx_len >>= 3;
 301                 RTE_ASSERT(lp->ctx_len == OTX2_IPSEC_PO_AES_GCM_OUTB_CTX_LEN);
 302         } else {
 303                 cipher_key = cipher_xform->cipher.key.data;
 304                 cipher_key_len = cipher_xform->cipher.key.length;
 305                 auth_key = auth_xform->auth.key.data;
 306                 auth_key_len = auth_xform->auth.key.length;
 307
 308                 /* TODO: check the ctx len for supporting ALGO */
 309                 lp->ctx_len = sizeof(struct otx2_ipsec_po_out_sa) >> 3;
 310                 RTE_ASSERT(lp->ctx_len == OTX2_IPSEC_PO_MAX_OUTB_CTX_LEN);
 311         }
 312
 313         if (cipher_key_len != 0)
 314                 memcpy(sa->cipher_key, cipher_key, cipher_key_len);
 315         else
 316                 return -EINVAL;
 317
 318         /* Use OPAD & IPAD */
 319         RTE_SET_USED(auth_key);
 320         RTE_SET_USED(auth_key_len);
 321
 322         inst.u64[7] = 0;
 323         inst.egrp = OTX2_CPT_EGRP_SE;
 324         inst.cptr = rte_mempool_virt2iova(sa);
 325
 326         lp->ucmd_w3 = inst.u64[7];
 327         lp->ucmd_opcode = (lp->ctx_len << 8) |
 328                                 (OTX2_IPSEC_PO_PROCESS_IPSEC_OUTB);
 329
 330         set_session_misc_attributes(lp, crypto_xform,
 331                                     auth_xform, cipher_xform);
 332
 333         return otx2_cpt_enq_sa_write(lp, crypto_dev->data->queue_pairs[0],
 334                                      OTX2_IPSEC_PO_WRITE_IPSEC_OUTB);
 335 }
 336
 337 static int
 338 crypto_sec_ipsec_inb_session_create(struct rte_cryptodev *crypto_dev,
 339                                     struct rte_security_ipsec_xform *ipsec,
 340                                     struct rte_crypto_sym_xform *crypto_xform,
 341                                     struct rte_security_session *sec_sess)
 342 {
 343         struct rte_crypto_sym_xform *auth_xform, *cipher_xform;
 344         struct otx2_sec_session_ipsec_lp *lp;
 345         struct otx2_ipsec_po_sa_ctl *ctl;
 346         const uint8_t *cipher_key, *auth_key;
 347         int cipher_key_len, auth_key_len;
 348         struct otx2_ipsec_po_in_sa *sa;
 349         struct otx2_sec_session *sess;
 350         struct otx2_cpt_inst_s inst;
 351         int ret;
 352
 353         sess = get_sec_session_private_data(sec_sess);
 354         lp = &sess->ipsec.lp;
 355
 356         sa = &lp->in_sa;
 357         ctl = &sa->ctl;
 358
 359         if (ctl->valid) {
 360                 otx2_err("SA already registered");
 361                 return -EINVAL;
 362         }
 363
 364         memset(sa, 0, sizeof(struct otx2_ipsec_po_in_sa));
 365
 366         ret = ipsec_po_sa_ctl_set(ipsec, crypto_xform, ctl);
 367         if (ret)
 368                 return ret;
 369
 370         lp->tunnel_type = ipsec->tunnel.type;
 371         auth_xform = crypto_xform;
 372         cipher_xform = crypto_xform->next;
 373
 374         cipher_key_len = 0;
 375         auth_key_len = 0;
 376
 377         if (crypto_xform->type == RTE_CRYPTO_SYM_XFORM_AEAD) {
 378                 if (crypto_xform->aead.algo == RTE_CRYPTO_AEAD_AES_GCM)
 379                         memcpy(sa->iv.gcm.nonce, &ipsec->salt, 4);
 380                 cipher_key = crypto_xform->aead.key.data;
 381                 cipher_key_len = crypto_xform->aead.key.length;
 382
 383                 lp->ctx_len = offsetof(struct otx2_ipsec_po_in_sa,
 384                                             aes_gcm.hmac_key[0]) >> 3;
 385                 RTE_ASSERT(lp->ctx_len == OTX2_IPSEC_PO_AES_GCM_INB_CTX_LEN);
 386         } else {
 387                 cipher_key = cipher_xform->cipher.key.data;
 388                 cipher_key_len = cipher_xform->cipher.key.length;
 389                 auth_key = auth_xform->auth.key.data;
 390                 auth_key_len = auth_xform->auth.key.length;
 391
 392                 /* TODO: check the ctx len for supporting ALGO */
 393                 lp->ctx_len = sizeof(struct otx2_ipsec_po_in_sa) >> 2;
 394                 RTE_ASSERT(lp->ctx_len == OTX2_IPSEC_PO_MAX_INB_CTX_LEN);
 395         }
 396
 397         if (cipher_key_len != 0)
 398                 memcpy(sa->cipher_key, cipher_key, cipher_key_len);
 399         else
 400                 return -EINVAL;
 401
 402         /* Use OPAD & IPAD */
 403         RTE_SET_USED(auth_key);
 404         RTE_SET_USED(auth_key_len);
 405
 406         inst.u64[7] = 0;
 407         inst.egrp = OTX2_CPT_EGRP_SE;
 408         inst.cptr = rte_mempool_virt2iova(sa);
 409
 410         lp->ucmd_w3 = inst.u64[7];
 411         lp->ucmd_opcode = (lp->ctx_len << 8) |
 412                                 (OTX2_IPSEC_PO_PROCESS_IPSEC_INB);
 413
 414         set_session_misc_attributes(lp, crypto_xform,
 415                                     auth_xform, cipher_xform);
 416
 417         return otx2_cpt_enq_sa_write(lp, crypto_dev->data->queue_pairs[0],
 418                                      OTX2_IPSEC_PO_WRITE_IPSEC_INB);
 419 }
 420
 421 static int
 422 crypto_sec_ipsec_session_create(struct rte_cryptodev *crypto_dev,
 423                                 struct rte_security_ipsec_xform *ipsec,
 424                                 struct rte_crypto_sym_xform *crypto_xform,
 425                                 struct rte_security_session *sess)
 426 {
 427         int ret;
 428
 429         if (crypto_dev->data->queue_pairs[0] == NULL) {
 430                 otx2_err("Setup cpt queue pair before creating sec session");
 431                 return -EPERM;
 432         }
 433
 434         ret = ipsec_po_xform_verify(ipsec, crypto_xform);
 435         if (ret)
 436                 return ret;
 437
 438         if (ipsec->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS)
 439                 return crypto_sec_ipsec_inb_session_create(crypto_dev, ipsec,
 440                                                            crypto_xform, sess);
 441         else
 442                 return crypto_sec_ipsec_outb_session_create(crypto_dev, ipsec,
 443                                                             crypto_xform, sess);
 444 }
 445
 446 static int
 447 otx2_crypto_sec_session_create(void *device,
 448                                struct rte_security_session_conf *conf,
 449                                struct rte_security_session *sess,
 450                                struct rte_mempool *mempool)
 451 {
 452         struct otx2_sec_session *priv;
 453         int ret;
 454
 455         if (conf->action_type != RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL)
 456                 return -ENOTSUP;
 457
 458         if (rte_security_dynfield_register() < 0)
 459                 return -rte_errno;
 460
 461         if (rte_mempool_get(mempool, (void **)&priv)) {
 462                 otx2_err("Could not allocate security session private data");
 463                 return -ENOMEM;
 464         }
 465
 466         set_sec_session_private_data(sess, priv);
 467
 468         priv->userdata = conf->userdata;
 469
 470         if (conf->protocol == RTE_SECURITY_PROTOCOL_IPSEC)
 471                 ret = crypto_sec_ipsec_session_create(device, &conf->ipsec,
 472                                                       conf->crypto_xform,
 473                                                       sess);
 474         else
 475                 ret = -ENOTSUP;
 476
 477         if (ret)
 478                 goto mempool_put;
 479
 480         return 0;
 481
 482 mempool_put:
 483         rte_mempool_put(mempool, priv);
 484         set_sec_session_private_data(sess, NULL);
 485         return ret;
 486 }
 487
 488 static int
 489 otx2_crypto_sec_session_destroy(void *device __rte_unused,
 490                                 struct rte_security_session *sess)
 491 {
 492         struct otx2_sec_session *priv;
 493         struct rte_mempool *sess_mp;
 494
 495         priv = get_sec_session_private_data(sess);
 496
 497         if (priv == NULL)
 498                 return 0;
 499
 500         sess_mp = rte_mempool_from_obj(priv);
 501
 502         set_sec_session_private_data(sess, NULL);
 503         rte_mempool_put(sess_mp, priv);
 504
 505         return 0;
 506 }
 507
 508 static unsigned int
 509 otx2_crypto_sec_session_get_size(void *device __rte_unused)
 510 {
 511         return sizeof(struct otx2_sec_session);
 512 }
 513
 514 static int
 515 otx2_crypto_sec_set_pkt_mdata(void *device __rte_unused,
 516                               struct rte_security_session *session,
 517                               struct rte_mbuf *m, void *params __rte_unused)
 518 {
 519         /* Set security session as the pkt metadata */
 520         *rte_security_dynfield(m) = (rte_security_dynfield_t)session;
 521
 522         return 0;
 523 }
 524
 525 static int
 526 otx2_crypto_sec_get_userdata(void *device __rte_unused, uint64_t md,
 527                              void **userdata)
 528 {
 529         /* Retrieve userdata  */
 530         *userdata = (void *)md;
 531
 532         return 0;
 533 }
 534
 535 static struct rte_security_ops otx2_crypto_sec_ops = {
 536         .session_create         = otx2_crypto_sec_session_create,
 537         .session_destroy        = otx2_crypto_sec_session_destroy,
 538         .session_get_size       = otx2_crypto_sec_session_get_size,
 539         .set_pkt_metadata       = otx2_crypto_sec_set_pkt_mdata,
 540         .get_userdata           = otx2_crypto_sec_get_userdata,
 541         .capabilities_get       = otx2_crypto_sec_capabilities_get
 542 };
 543
 544 int
 545 otx2_crypto_sec_ctx_create(struct rte_cryptodev *cdev)
 546 {
 547         struct rte_security_ctx *ctx;
 548
 549         ctx = rte_malloc("otx2_cpt_dev_sec_ctx",
 550                          sizeof(struct rte_security_ctx), 0);
 551
 552         if (ctx == NULL)
 553                 return -ENOMEM;
 554
 555         /* Populate ctx */
 556         ctx->device = cdev;
 557         ctx->ops = &otx2_crypto_sec_ops;
 558         ctx->sess_cnt = 0;
 559
 560         cdev->security_ctx = ctx;
 561
 562         return 0;
 563 }
 564
 565 void
 566 otx2_crypto_sec_ctx_destroy(struct rte_cryptodev *cdev)
 567 {
 568         rte_free(cdev->security_ctx);
 569 }