src/plugins/dpdk/ipsec/esp_encrypt.c

   1 /*
   2  * esp_encrypt.c : IPSec ESP encrypt node using DPDK Cryptodev
   3  *
   4  * Copyright (c) 2017 Intel and/or its affiliates.
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at:
   8  *
   9  *     http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #include <vnet/vnet.h>
  19 #include <vnet/api_errno.h>
  20 #include <vnet/ip/ip.h>
  21
  22 #include <vnet/ipsec/ipsec.h>
  23 #include <vnet/ipsec/esp.h>
  24 #include <vnet/udp/udp.h>
  25 #include <dpdk/buffer.h>
  26 #include <dpdk/ipsec/ipsec.h>
  27 #include <dpdk/device/dpdk.h>
  28 #include <dpdk/device/dpdk_priv.h>
  29
  30 #define foreach_esp_encrypt_next                   \
  31 _(DROP, "error-drop")                              \
  32 _(IP4_LOOKUP, "ip4-lookup")                        \
  33 _(IP6_LOOKUP, "ip6-lookup")                        \
  34 _(INTERFACE_OUTPUT, "interface-output")
  35
  36 #define _(v, s) ESP_ENCRYPT_NEXT_##v,
  37 typedef enum
  38 {
  39   foreach_esp_encrypt_next
  40 #undef _
  41     ESP_ENCRYPT_N_NEXT,
  42 } esp_encrypt_next_t;
  43
  44 #define foreach_esp_encrypt_error                   \
  45  _(RX_PKTS, "ESP pkts received")                    \
  46  _(SEQ_CYCLED, "Sequence number cycled")            \
  47  _(ENQ_FAIL, "Enqueue failed to crypto device")     \
  48  _(DISCARD, "Not enough crypto operations, discarding frame")  \
  49  _(SESSION, "Failed to get crypto session")         \
  50  _(NOSUP, "Cipher/Auth not supported")
  51
  52
  53 typedef enum
  54 {
  55 #define _(sym,str) ESP_ENCRYPT_ERROR_##sym,
  56   foreach_esp_encrypt_error
  57 #undef _
  58     ESP_ENCRYPT_N_ERROR,
  59 } esp_encrypt_error_t;
  60
  61 static char *esp_encrypt_error_strings[] = {
  62 #define _(sym,string) string,
  63   foreach_esp_encrypt_error
  64 #undef _
  65 };
  66
  67 extern vlib_node_registration_t dpdk_esp4_encrypt_node;
  68 extern vlib_node_registration_t dpdk_esp6_encrypt_node;
  69
  70 typedef struct
  71 {
  72   ipsec_crypto_alg_t crypto_alg;
  73   ipsec_integ_alg_t integ_alg;
  74   u8 packet_data[64];
  75 } esp_encrypt_trace_t;
  76
  77 /* packet trace format function */
  78 static u8 *
  79 format_esp_encrypt_trace (u8 * s, va_list * args)
  80 {
  81   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
  82   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
  83   esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
  84   ip4_header_t *ih4 = (ip4_header_t *) t->packet_data;
  85   u32 indent = format_get_indent (s), offset;
  86
  87   s = format (s, "cipher %U auth %U\n",
  88               format_ipsec_crypto_alg, t->crypto_alg,
  89               format_ipsec_integ_alg, t->integ_alg);
  90
  91   if ((ih4->ip_version_and_header_length & 0xF0) == 0x60)
  92     {
  93       s = format (s, "%U%U", format_white_space, indent,
  94                   format_ip6_header, ih4);
  95       offset = sizeof (ip6_header_t);
  96     }
  97   else
  98     {
  99       s = format (s, "%U%U", format_white_space, indent,
 100                   format_ip4_header, ih4);
 101       offset = ip4_header_bytes (ih4);
 102     }
 103
 104   s = format (s, "\n%U%U", format_white_space, indent,
 105               format_esp_header, t->packet_data + offset);
 106
 107   return s;
 108 }
 109
 110 always_inline uword
 111 dpdk_esp_encrypt_inline (vlib_main_t * vm,
 112                          vlib_node_runtime_t * node,
 113                          vlib_frame_t * from_frame, int is_ip6)
 114 {
 115   u32 n_left_from, *from, *to_next, next_index;
 116   ipsec_main_t *im = &ipsec_main;
 117   u32 thread_idx = vlib_get_thread_index ();
 118   dpdk_crypto_main_t *dcm = &dpdk_crypto_main;
 119   crypto_resource_t *res = 0;
 120   ipsec_sa_t *sa0 = 0;
 121   crypto_alg_t *cipher_alg = 0, *auth_alg = 0;
 122   struct rte_cryptodev_sym_session *session = 0;
 123   u32 ret, last_sa_index = ~0;
 124   u8 numa = rte_socket_id ();
 125   u8 is_aead = 0;
 126   crypto_worker_main_t *cwm =
 127     vec_elt_at_index (dcm->workers_main, thread_idx);
 128   struct rte_crypto_op **ops = cwm->ops;
 129
 130   from = vlib_frame_vector_args (from_frame);
 131   n_left_from = from_frame->n_vectors;
 132
 133   ret = crypto_alloc_ops (numa, ops, n_left_from);
 134   if (ret)
 135     {
 136       if (is_ip6)
 137         vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
 138                                      ESP_ENCRYPT_ERROR_DISCARD, 1);
 139       else
 140         vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
 141                                      ESP_ENCRYPT_ERROR_DISCARD, 1);
 142       /* Discard whole frame */
 143       return n_left_from;
 144     }
 145
 146   next_index = ESP_ENCRYPT_NEXT_DROP;
 147
 148   while (n_left_from > 0)
 149     {
 150       u32 n_left_to_next;
 151
 152       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 153
 154       while (n_left_from > 0 && n_left_to_next > 0)
 155         {
 156           clib_error_t *error;
 157           u32 bi0;
 158           vlib_buffer_t *b0 = 0;
 159           u32 sa_index0;
 160           ip4_and_esp_header_t *ih0, *oh0 = 0;
 161           ip6_and_esp_header_t *ih6_0, *oh6_0 = 0;
 162           ip4_and_udp_and_esp_header_t *ouh0 = 0;
 163           esp_header_t *esp0;
 164           esp_footer_t *f0;
 165           u8 next_hdr_type;
 166           u32 iv_size;
 167           u16 orig_sz;
 168           u8 trunc_size;
 169           u16 rewrite_len;
 170           u16 udp_encap_adv = 0;
 171           struct rte_mbuf *mb0 = 0;
 172           struct rte_crypto_op *op;
 173           u16 res_idx;
 174
 175           bi0 = from[0];
 176           from += 1;
 177           n_left_from -= 1;
 178
 179           b0 = vlib_get_buffer (vm, bi0);
 180           ih0 = vlib_buffer_get_current (b0);
 181           mb0 = rte_mbuf_from_vlib_buffer (b0);
 182
 183           /* ih0/ih6_0 */
 184           CLIB_PREFETCH (ih0, sizeof (ih6_0[0]), LOAD);
 185           /* f0 */
 186           CLIB_PREFETCH (vlib_buffer_get_tail (b0), 20, STORE);
 187           /* mb0 */
 188           CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE);
 189
 190           op = ops[0];
 191           ops += 1;
 192           ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);
 193
 194           dpdk_op_priv_t *priv = crypto_op_get_priv (op);
 195           /* store bi in op private */
 196           priv->bi = bi0;
 197
 198           u16 op_len =
 199             sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]);
 200           CLIB_PREFETCH (op, op_len, STORE);
 201
 202           sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
 203
 204           if (sa_index0 != last_sa_index)
 205             {
 206               sa0 = pool_elt_at_index (im->sad, sa_index0);
 207
 208               cipher_alg =
 209                 vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg);
 210               auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg);
 211
 212               is_aead = (cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD);
 213
 214               if (is_aead)
 215                 auth_alg = cipher_alg;
 216
 217               res_idx = get_resource (cwm, sa0);
 218
 219               if (PREDICT_FALSE (res_idx == (u16) ~ 0))
 220                 {
 221                   clib_warning ("unsupported SA by thread index %u",
 222                                 thread_idx);
 223                   if (is_ip6)
 224                     vlib_node_increment_counter (vm,
 225                                                  dpdk_esp6_encrypt_node.index,
 226                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 227                   else
 228                     vlib_node_increment_counter (vm,
 229                                                  dpdk_esp4_encrypt_node.index,
 230                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 231                   to_next[0] = bi0;
 232                   to_next += 1;
 233                   n_left_to_next -= 1;
 234                   goto trace;
 235                 }
 236               res = vec_elt_at_index (dcm->resource, res_idx);
 237
 238               error = crypto_get_session (&session, sa_index0, res, cwm, 1);
 239               if (PREDICT_FALSE (error || !session))
 240                 {
 241                   clib_warning ("failed to get crypto session");
 242                   if (is_ip6)
 243                     vlib_node_increment_counter (vm,
 244                                                  dpdk_esp6_encrypt_node.index,
 245                                                  ESP_ENCRYPT_ERROR_SESSION,
 246                                                  1);
 247                   else
 248                     vlib_node_increment_counter (vm,
 249                                                  dpdk_esp4_encrypt_node.index,
 250                                                  ESP_ENCRYPT_ERROR_SESSION,
 251                                                  1);
 252                   to_next[0] = bi0;
 253                   to_next += 1;
 254                   n_left_to_next -= 1;
 255                   goto trace;
 256                 }
 257
 258               last_sa_index = sa_index0;
 259             }
 260
 261           if (PREDICT_FALSE (esp_seq_advance (sa0)))
 262             {
 263               clib_warning ("sequence number counter has cycled SPI %u",
 264                             sa0->spi);
 265               if (is_ip6)
 266                 vlib_node_increment_counter (vm,
 267                                              dpdk_esp6_encrypt_node.index,
 268                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
 269               else
 270                 vlib_node_increment_counter (vm,
 271                                              dpdk_esp4_encrypt_node.index,
 272                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
 273               //TODO: rekey SA
 274               to_next[0] = bi0;
 275               to_next += 1;
 276               n_left_to_next -= 1;
 277               goto trace;
 278             }
 279
 280           orig_sz = b0->current_length;
 281
 282           /* TODO multi-seg support - total_length_not_including_first_buffer */
 283           sa0->total_data_size += b0->current_length;
 284
 285           res->ops[res->n_ops] = op;
 286           res->bi[res->n_ops] = bi0;
 287           res->n_ops += 1;
 288
 289           dpdk_gcm_cnt_blk *icb = &priv->cb;
 290
 291           crypto_set_icb (icb, sa0->salt, sa0->seq, sa0->seq_hi);
 292
 293           iv_size = cipher_alg->iv_len;
 294           trunc_size = auth_alg->trunc_size;
 295
 296           /* if UDP encapsulation is used adjust the address of the IP header */
 297           if (sa0->udp_encap && !is_ip6)
 298             udp_encap_adv = sizeof (udp_header_t);
 299
 300           if (sa0->is_tunnel)
 301             {
 302               rewrite_len = 0;
 303               if (!is_ip6 && !sa0->is_tunnel_ip6)       /* ip4inip4 */
 304                 {
 305                   /* in tunnel mode send it back to FIB */
 306                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP4_LOOKUP;
 307                   u8 adv = sizeof (ip4_header_t) + udp_encap_adv +
 308                     sizeof (esp_header_t) + iv_size;
 309                   vlib_buffer_advance (b0, -adv);
 310                   oh0 = vlib_buffer_get_current (b0);
 311                   ouh0 = vlib_buffer_get_current (b0);
 312                   next_hdr_type = IP_PROTOCOL_IP_IN_IP;
 313                   /*
 314                    * oh0->ip4.ip_version_and_header_length = 0x45;
 315                    * oh0->ip4.tos = ih0->ip4.tos;
 316                    * oh0->ip4.fragment_id = 0;
 317                    * oh0->ip4.flags_and_fragment_offset = 0;
 318                    */
 319                   oh0->ip4.checksum_data_64[0] =
 320                     clib_host_to_net_u64 (0x45ULL << 56);
 321                   /*
 322                    * oh0->ip4.ttl = 254;
 323                    * oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 324                    */
 325                   oh0->ip4.checksum_data_32[2] =
 326                     clib_host_to_net_u32 (0xfe320000);
 327
 328                   oh0->ip4.src_address.as_u32 =
 329                     sa0->tunnel_src_addr.ip4.as_u32;
 330                   oh0->ip4.dst_address.as_u32 =
 331                     sa0->tunnel_dst_addr.ip4.as_u32;
 332
 333                   if (sa0->udp_encap)
 334                     {
 335                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
 336                       esp0 = &ouh0->esp;
 337                     }
 338                   else
 339                     esp0 = &oh0->esp;
 340                   esp0->spi = clib_host_to_net_u32 (sa0->spi);
 341                   esp0->seq = clib_host_to_net_u32 (sa0->seq);
 342                 }
 343               else if (is_ip6 && sa0->is_tunnel_ip6)    /* ip6inip6 */
 344                 {
 345                   /* in tunnel mode send it back to FIB */
 346                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP6_LOOKUP;
 347
 348                   u8 adv =
 349                     sizeof (ip6_header_t) + sizeof (esp_header_t) + iv_size;
 350                   vlib_buffer_advance (b0, -adv);
 351                   ih6_0 = (ip6_and_esp_header_t *) ih0;
 352                   oh6_0 = vlib_buffer_get_current (b0);
 353
 354                   next_hdr_type = IP_PROTOCOL_IPV6;
 355
 356                   oh6_0->ip6.ip_version_traffic_class_and_flow_label =
 357                     ih6_0->ip6.ip_version_traffic_class_and_flow_label;
 358
 359                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
 360                   oh6_0->ip6.hop_limit = 254;
 361                   oh6_0->ip6.src_address.as_u64[0] =
 362                     sa0->tunnel_src_addr.ip6.as_u64[0];
 363                   oh6_0->ip6.src_address.as_u64[1] =
 364                     sa0->tunnel_src_addr.ip6.as_u64[1];
 365                   oh6_0->ip6.dst_address.as_u64[0] =
 366                     sa0->tunnel_dst_addr.ip6.as_u64[0];
 367                   oh6_0->ip6.dst_address.as_u64[1] =
 368                     sa0->tunnel_dst_addr.ip6.as_u64[1];
 369                   esp0 = &oh6_0->esp;
 370                   oh6_0->esp.spi = clib_host_to_net_u32 (sa0->spi);
 371                   oh6_0->esp.seq = clib_host_to_net_u32 (sa0->seq);
 372                 }
 373               else              /* unsupported ip4inip6, ip6inip4 */
 374                 {
 375                   if (is_ip6)
 376                     vlib_node_increment_counter (vm,
 377                                                  dpdk_esp6_encrypt_node.index,
 378                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 379                   else
 380                     vlib_node_increment_counter (vm,
 381                                                  dpdk_esp4_encrypt_node.index,
 382                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 383                   to_next[0] = bi0;
 384                   to_next += 1;
 385                   n_left_to_next -= 1;
 386                   goto trace;
 387                 }
 388               vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
 389             }
 390           else                  /* transport mode */
 391             {
 392               priv->next = DPDK_CRYPTO_INPUT_NEXT_INTERFACE_OUTPUT;
 393               rewrite_len = vnet_buffer (b0)->ip.save_rewrite_length;
 394               u16 adv = sizeof (esp_header_t) + iv_size + udp_encap_adv;
 395               vlib_buffer_advance (b0, -adv - rewrite_len);
 396               u8 *src = ((u8 *) ih0) - rewrite_len;
 397               u8 *dst = vlib_buffer_get_current (b0);
 398               oh0 = vlib_buffer_get_current (b0) + rewrite_len;
 399
 400               if (is_ip6)
 401                 {
 402                   orig_sz -= sizeof (ip6_header_t);
 403                   ih6_0 = (ip6_and_esp_header_t *) ih0;
 404                   next_hdr_type = ih6_0->ip6.protocol;
 405                   memmove (dst, src, rewrite_len + sizeof (ip6_header_t));
 406                   oh6_0 = (ip6_and_esp_header_t *) oh0;
 407                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
 408                   esp0 = &oh6_0->esp;
 409                 }
 410               else              /* ipv4 */
 411                 {
 412                   u16 ip_size = ip4_header_bytes (&ih0->ip4);
 413                   orig_sz -= ip_size;
 414                   next_hdr_type = ih0->ip4.protocol;
 415                   memmove (dst, src, rewrite_len + ip_size);
 416                   oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 417                   esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
 418                   if (sa0->udp_encap)
 419                     {
 420                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
 421                       esp0 = (esp_header_t *)
 422                         (((u8 *) oh0) + ip_size + udp_encap_adv);
 423                     }
 424                   else
 425                     {
 426                       oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 427                       esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
 428                     }
 429                 }
 430               esp0->spi = clib_host_to_net_u32 (sa0->spi);
 431               esp0->seq = clib_host_to_net_u32 (sa0->seq);
 432             }
 433
 434           if (sa0->udp_encap && ouh0)
 435             {
 436               ouh0->udp.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
 437               ouh0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
 438               ouh0->udp.checksum = 0;
 439             }
 440           ASSERT (is_pow2 (cipher_alg->boundary));
 441           u16 mask = cipher_alg->boundary - 1;
 442           u16 pad_payload_len = ((orig_sz + 2) + mask) & ~mask;
 443           u8 pad_bytes = pad_payload_len - 2 - orig_sz;
 444
 445           u8 *padding =
 446             vlib_buffer_put_uninit (b0, pad_bytes + 2 + trunc_size);
 447
 448           /* The extra pad bytes would be overwritten by the digest */
 449           if (pad_bytes)
 450             clib_memcpy_fast (padding, pad_data, 16);
 451
 452           f0 = (esp_footer_t *) (padding + pad_bytes);
 453           f0->pad_length = pad_bytes;
 454           f0->next_header = next_hdr_type;
 455
 456           if (is_ip6)
 457             {
 458               u16 len = b0->current_length - sizeof (ip6_header_t);
 459               oh6_0->ip6.payload_length =
 460                 clib_host_to_net_u16 (len - rewrite_len);
 461             }
 462           else
 463             {
 464               oh0->ip4.length =
 465                 clib_host_to_net_u16 (b0->current_length - rewrite_len);
 466               oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
 467               if (sa0->udp_encap && ouh0)
 468                 {
 469                   ouh0->udp.length =
 470                     clib_host_to_net_u16 (clib_net_to_host_u16
 471                                           (ouh0->ip4.length) -
 472                                           ip4_header_bytes (&ouh0->ip4));
 473                 }
 474             }
 475
 476           b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
 477
 478           /* mbuf packet starts at ESP header */
 479           mb0->data_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
 480           mb0->pkt_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
 481           mb0->data_off = ((void *) esp0) - mb0->buf_addr;
 482
 483           u32 cipher_off, cipher_len, auth_len = 0;
 484           u32 *aad = NULL;
 485
 486           u8 *digest = vlib_buffer_get_tail (b0) - trunc_size;
 487           u64 digest_paddr =
 488             mb0->buf_physaddr + digest - ((u8 *) mb0->buf_addr);
 489
 490           if (!is_aead && cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC)
 491             {
 492               cipher_off = sizeof (esp_header_t);
 493               cipher_len = iv_size + pad_payload_len;
 494             }
 495           else                  /* CTR/GCM */
 496             {
 497               u32 *esp_iv = (u32 *) (esp0 + 1);
 498               esp_iv[0] = sa0->seq;
 499               esp_iv[1] = sa0->seq_hi;
 500
 501               cipher_off = sizeof (esp_header_t) + iv_size;
 502               cipher_len = pad_payload_len;
 503             }
 504
 505           if (is_aead)
 506             {
 507               aad = (u32 *) priv->aad;
 508               aad[0] = clib_host_to_net_u32 (sa0->spi);
 509               aad[1] = clib_host_to_net_u32 (sa0->seq);
 510
 511               /* aad[3] should always be 0 */
 512               if (PREDICT_FALSE (sa0->use_esn))
 513                 aad[2] = clib_host_to_net_u32 (sa0->seq_hi);
 514               else
 515                 aad[2] = 0;
 516             }
 517           else
 518             {
 519               auth_len =
 520                 vlib_buffer_get_tail (b0) - ((u8 *) esp0) - trunc_size;
 521               if (sa0->use_esn)
 522                 {
 523                   u32 *_digest = (u32 *) digest;
 524                   _digest[0] = clib_host_to_net_u32 (sa0->seq_hi);
 525                   auth_len += 4;
 526                 }
 527             }
 528
 529           crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len,
 530                            0, auth_len, (u8 *) aad, digest, digest_paddr);
 531
 532         trace:
 533           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
 534             {
 535               esp_encrypt_trace_t *tr =
 536                 vlib_add_trace (vm, node, b0, sizeof (*tr));
 537               tr->crypto_alg = sa0->crypto_alg;
 538               tr->integ_alg = sa0->integ_alg;
 539               u8 *p = vlib_buffer_get_current (b0);
 540               if (!sa0->is_tunnel)
 541                 p += vnet_buffer (b0)->ip.save_rewrite_length;
 542               clib_memcpy_fast (tr->packet_data, p, sizeof (tr->packet_data));
 543             }
 544         }
 545       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 546     }
 547   if (is_ip6)
 548     {
 549       vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
 550                                    ESP_ENCRYPT_ERROR_RX_PKTS,
 551                                    from_frame->n_vectors);
 552
 553       crypto_enqueue_ops (vm, cwm, dpdk_esp6_encrypt_node.index,
 554                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa);
 555     }
 556   else
 557     {
 558       vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
 559                                    ESP_ENCRYPT_ERROR_RX_PKTS,
 560                                    from_frame->n_vectors);
 561
 562       crypto_enqueue_ops (vm, cwm, dpdk_esp4_encrypt_node.index,
 563                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa);
 564     }
 565
 566   crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops);
 567
 568   return from_frame->n_vectors;
 569 }
 570
 571 VLIB_NODE_FN (dpdk_esp4_encrypt_node) (vlib_main_t * vm,
 572                                        vlib_node_runtime_t * node,
 573                                        vlib_frame_t * from_frame)
 574 {
 575   return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ );
 576 }
 577
 578 /* *INDENT-OFF* */
 579 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_node) = {
 580   .name = "dpdk-esp4-encrypt",
 581   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
 582   .vector_size = sizeof (u32),
 583   .format_trace = format_esp_encrypt_trace,
 584   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
 585   .error_strings = esp_encrypt_error_strings,
 586   .n_next_nodes = 1,
 587   .next_nodes =
 588     {
 589       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
 590     }
 591 };
 592 /* *INDENT-ON* */
 593
 594 VLIB_NODE_FN (dpdk_esp6_encrypt_node) (vlib_main_t * vm,
 595                                        vlib_node_runtime_t * node,
 596                                        vlib_frame_t * from_frame)
 597 {
 598   return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ );
 599 }
 600
 601 /* *INDENT-OFF* */
 602 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_node) = {
 603   .name = "dpdk-esp6-encrypt",
 604   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
 605   .vector_size = sizeof (u32),
 606   .format_trace = format_esp_encrypt_trace,
 607   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
 608   .error_strings = esp_encrypt_error_strings,
 609   .n_next_nodes = 1,
 610   .next_nodes =
 611     {
 612       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
 613     }
 614 };
 615 /* *INDENT-ON* */
 616
 617 /*
 618  * fd.io coding-style-patch-verification: ON
 619  *
 620  * Local Variables:
 621  * eval: (c-set-style "gnu")
 622  * End:
 623  */