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, thread_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   thread_index = vm->thread_index;
 133
 134   ret = crypto_alloc_ops (numa, ops, n_left_from);
 135   if (ret)
 136     {
 137       if (is_ip6)
 138         vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
 139                                      ESP_ENCRYPT_ERROR_DISCARD, 1);
 140       else
 141         vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
 142                                      ESP_ENCRYPT_ERROR_DISCARD, 1);
 143       /* Discard whole frame */
 144       return n_left_from;
 145     }
 146
 147   next_index = ESP_ENCRYPT_NEXT_DROP;
 148
 149   while (n_left_from > 0)
 150     {
 151       u32 n_left_to_next;
 152
 153       vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
 154
 155       while (n_left_from > 0 && n_left_to_next > 0)
 156         {
 157           clib_error_t *error;
 158           u32 bi0;
 159           vlib_buffer_t *b0 = 0;
 160           u32 sa_index0;
 161           ip4_and_esp_header_t *ih0, *oh0 = 0;
 162           ip6_and_esp_header_t *ih6_0, *oh6_0 = 0;
 163           ip4_and_udp_and_esp_header_t *ouh0 = 0;
 164           esp_header_t *esp0;
 165           esp_footer_t *f0;
 166           u8 next_hdr_type;
 167           u32 iv_size;
 168           u16 orig_sz;
 169           u8 trunc_size;
 170           u16 rewrite_len;
 171           u16 udp_encap_adv = 0;
 172           struct rte_mbuf *mb0 = 0;
 173           struct rte_crypto_op *op;
 174           u16 res_idx;
 175
 176           bi0 = from[0];
 177           from += 1;
 178           n_left_from -= 1;
 179
 180           b0 = vlib_get_buffer (vm, bi0);
 181           ih0 = vlib_buffer_get_current (b0);
 182           mb0 = rte_mbuf_from_vlib_buffer (b0);
 183
 184           /* ih0/ih6_0 */
 185           CLIB_PREFETCH (ih0, sizeof (ih6_0[0]), LOAD);
 186           /* f0 */
 187           CLIB_PREFETCH (vlib_buffer_get_tail (b0), 20, STORE);
 188           /* mb0 */
 189           CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE);
 190
 191           op = ops[0];
 192           ops += 1;
 193           ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);
 194
 195           dpdk_op_priv_t *priv = crypto_op_get_priv (op);
 196           /* store bi in op private */
 197           priv->bi = bi0;
 198
 199           u16 op_len =
 200             sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]);
 201           CLIB_PREFETCH (op, op_len, STORE);
 202
 203           sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
 204
 205           if (sa_index0 != last_sa_index)
 206             {
 207               sa0 = pool_elt_at_index (im->sad, sa_index0);
 208
 209               cipher_alg =
 210                 vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg);
 211               auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg);
 212
 213               is_aead = (cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD);
 214
 215               if (is_aead)
 216                 auth_alg = cipher_alg;
 217
 218               res_idx = get_resource (cwm, sa0);
 219
 220               if (PREDICT_FALSE (res_idx == (u16) ~ 0))
 221                 {
 222                   clib_warning ("unsupported SA by thread index %u",
 223                                 thread_idx);
 224                   if (is_ip6)
 225                     vlib_node_increment_counter (vm,
 226                                                  dpdk_esp6_encrypt_node.index,
 227                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 228                   else
 229                     vlib_node_increment_counter (vm,
 230                                                  dpdk_esp4_encrypt_node.index,
 231                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 232                   to_next[0] = bi0;
 233                   to_next += 1;
 234                   n_left_to_next -= 1;
 235                   goto trace;
 236                 }
 237               res = vec_elt_at_index (dcm->resource, res_idx);
 238
 239               error = crypto_get_session (&session, sa_index0, res, cwm, 1);
 240               if (PREDICT_FALSE (error || !session))
 241                 {
 242                   clib_warning ("failed to get crypto session");
 243                   if (is_ip6)
 244                     vlib_node_increment_counter (vm,
 245                                                  dpdk_esp6_encrypt_node.index,
 246                                                  ESP_ENCRYPT_ERROR_SESSION,
 247                                                  1);
 248                   else
 249                     vlib_node_increment_counter (vm,
 250                                                  dpdk_esp4_encrypt_node.index,
 251                                                  ESP_ENCRYPT_ERROR_SESSION,
 252                                                  1);
 253                   to_next[0] = bi0;
 254                   to_next += 1;
 255                   n_left_to_next -= 1;
 256                   goto trace;
 257                 }
 258
 259               last_sa_index = sa_index0;
 260             }
 261
 262           if (PREDICT_FALSE (esp_seq_advance (sa0)))
 263             {
 264               clib_warning ("sequence number counter has cycled SPI %u",
 265                             sa0->spi);
 266               if (is_ip6)
 267                 vlib_node_increment_counter (vm,
 268                                              dpdk_esp6_encrypt_node.index,
 269                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
 270               else
 271                 vlib_node_increment_counter (vm,
 272                                              dpdk_esp4_encrypt_node.index,
 273                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
 274               //TODO: rekey SA
 275               to_next[0] = bi0;
 276               to_next += 1;
 277               n_left_to_next -= 1;
 278               goto trace;
 279             }
 280
 281           orig_sz = b0->current_length;
 282
 283           /* TODO multi-seg support - total_length_not_including_first_buffer */
 284           vlib_increment_combined_counter
 285             (&ipsec_sa_counters, thread_index, sa_index0,
 286              1, b0->current_length);
 287
 288           res->ops[res->n_ops] = op;
 289           res->bi[res->n_ops] = bi0;
 290           res->n_ops += 1;
 291
 292           dpdk_gcm_cnt_blk *icb = &priv->cb;
 293
 294           crypto_set_icb (icb, sa0->salt, sa0->seq, sa0->seq_hi);
 295
 296           iv_size = cipher_alg->iv_len;
 297           trunc_size = auth_alg->trunc_size;
 298
 299           /* if UDP encapsulation is used adjust the address of the IP header */
 300           if (ipsec_sa_is_set_UDP_ENCAP (sa0) && !is_ip6)
 301             udp_encap_adv = sizeof (udp_header_t);
 302
 303           if (ipsec_sa_is_set_IS_TUNNEL (sa0))
 304             {
 305               rewrite_len = 0;
 306               if (!is_ip6 && !ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))       /* ip4inip4 */
 307                 {
 308                   /* in tunnel mode send it back to FIB */
 309                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP4_LOOKUP;
 310                   u8 adv = sizeof (ip4_header_t) + udp_encap_adv +
 311                     sizeof (esp_header_t) + iv_size;
 312                   vlib_buffer_advance (b0, -adv);
 313                   oh0 = vlib_buffer_get_current (b0);
 314                   ouh0 = vlib_buffer_get_current (b0);
 315                   next_hdr_type = IP_PROTOCOL_IP_IN_IP;
 316                   /*
 317                    * oh0->ip4.ip_version_and_header_length = 0x45;
 318                    * oh0->ip4.tos = ih0->ip4.tos;
 319                    * oh0->ip4.fragment_id = 0;
 320                    * oh0->ip4.flags_and_fragment_offset = 0;
 321                    */
 322                   oh0->ip4.checksum_data_64[0] =
 323                     clib_host_to_net_u64 (0x45ULL << 56);
 324                   /*
 325                    * oh0->ip4.ttl = 254;
 326                    * oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 327                    */
 328                   oh0->ip4.checksum_data_32[2] =
 329                     clib_host_to_net_u32 (0xfe320000);
 330
 331                   oh0->ip4.src_address.as_u32 =
 332                     sa0->tunnel_src_addr.ip4.as_u32;
 333                   oh0->ip4.dst_address.as_u32 =
 334                     sa0->tunnel_dst_addr.ip4.as_u32;
 335
 336                   if (ipsec_sa_is_set_UDP_ENCAP (sa0))
 337                     {
 338                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
 339                       esp0 = &ouh0->esp;
 340                     }
 341                   else
 342                     esp0 = &oh0->esp;
 343                   esp0->spi = clib_host_to_net_u32 (sa0->spi);
 344                   esp0->seq = clib_host_to_net_u32 (sa0->seq);
 345                 }
 346               else if (is_ip6 && ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
 347                 {
 348                   /* ip6inip6 */
 349                   /* in tunnel mode send it back to FIB */
 350                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP6_LOOKUP;
 351
 352                   u8 adv =
 353                     sizeof (ip6_header_t) + sizeof (esp_header_t) + iv_size;
 354                   vlib_buffer_advance (b0, -adv);
 355                   ih6_0 = (ip6_and_esp_header_t *) ih0;
 356                   oh6_0 = vlib_buffer_get_current (b0);
 357
 358                   next_hdr_type = IP_PROTOCOL_IPV6;
 359
 360                   oh6_0->ip6.ip_version_traffic_class_and_flow_label =
 361                     ih6_0->ip6.ip_version_traffic_class_and_flow_label;
 362
 363                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
 364                   oh6_0->ip6.hop_limit = 254;
 365                   oh6_0->ip6.src_address.as_u64[0] =
 366                     sa0->tunnel_src_addr.ip6.as_u64[0];
 367                   oh6_0->ip6.src_address.as_u64[1] =
 368                     sa0->tunnel_src_addr.ip6.as_u64[1];
 369                   oh6_0->ip6.dst_address.as_u64[0] =
 370                     sa0->tunnel_dst_addr.ip6.as_u64[0];
 371                   oh6_0->ip6.dst_address.as_u64[1] =
 372                     sa0->tunnel_dst_addr.ip6.as_u64[1];
 373                   esp0 = &oh6_0->esp;
 374                   oh6_0->esp.spi = clib_host_to_net_u32 (sa0->spi);
 375                   oh6_0->esp.seq = clib_host_to_net_u32 (sa0->seq);
 376                 }
 377               else              /* unsupported ip4inip6, ip6inip4 */
 378                 {
 379                   if (is_ip6)
 380                     vlib_node_increment_counter (vm,
 381                                                  dpdk_esp6_encrypt_node.index,
 382                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 383                   else
 384                     vlib_node_increment_counter (vm,
 385                                                  dpdk_esp4_encrypt_node.index,
 386                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 387                   to_next[0] = bi0;
 388                   to_next += 1;
 389                   n_left_to_next -= 1;
 390                   goto trace;
 391                 }
 392               vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
 393             }
 394           else                  /* transport mode */
 395             {
 396               priv->next = DPDK_CRYPTO_INPUT_NEXT_INTERFACE_OUTPUT;
 397               rewrite_len = vnet_buffer (b0)->ip.save_rewrite_length;
 398               u16 adv = sizeof (esp_header_t) + iv_size + udp_encap_adv;
 399               vlib_buffer_advance (b0, -adv - rewrite_len);
 400               u8 *src = ((u8 *) ih0) - rewrite_len;
 401               u8 *dst = vlib_buffer_get_current (b0);
 402               oh0 = vlib_buffer_get_current (b0) + rewrite_len;
 403
 404               if (is_ip6)
 405                 {
 406                   orig_sz -= sizeof (ip6_header_t);
 407                   ih6_0 = (ip6_and_esp_header_t *) ih0;
 408                   next_hdr_type = ih6_0->ip6.protocol;
 409                   memmove (dst, src, rewrite_len + sizeof (ip6_header_t));
 410                   oh6_0 = (ip6_and_esp_header_t *) oh0;
 411                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
 412                   esp0 = &oh6_0->esp;
 413                 }
 414               else              /* ipv4 */
 415                 {
 416                   u16 ip_size = ip4_header_bytes (&ih0->ip4);
 417                   orig_sz -= ip_size;
 418                   next_hdr_type = ih0->ip4.protocol;
 419                   memmove (dst, src, rewrite_len + ip_size);
 420                   oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 421                   esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
 422                   if (ipsec_sa_is_set_UDP_ENCAP (sa0))
 423                     {
 424                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
 425                       esp0 = (esp_header_t *)
 426                         (((u8 *) oh0) + ip_size + udp_encap_adv);
 427                     }
 428                   else
 429                     {
 430                       oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 431                       esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
 432                     }
 433                 }
 434               esp0->spi = clib_host_to_net_u32 (sa0->spi);
 435               esp0->seq = clib_host_to_net_u32 (sa0->seq);
 436             }
 437
 438           if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
 439             {
 440               ouh0->udp.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
 441               ouh0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
 442               ouh0->udp.checksum = 0;
 443             }
 444           ASSERT (is_pow2 (cipher_alg->boundary));
 445           u16 mask = cipher_alg->boundary - 1;
 446           u16 pad_payload_len = ((orig_sz + 2) + mask) & ~mask;
 447           u8 pad_bytes = pad_payload_len - 2 - orig_sz;
 448
 449           u8 *padding =
 450             vlib_buffer_put_uninit (b0, pad_bytes + 2 + trunc_size);
 451
 452           /* The extra pad bytes would be overwritten by the digest */
 453           if (pad_bytes)
 454             clib_memcpy_fast (padding, pad_data, 16);
 455
 456           f0 = (esp_footer_t *) (padding + pad_bytes);
 457           f0->pad_length = pad_bytes;
 458           f0->next_header = next_hdr_type;
 459
 460           if (is_ip6)
 461             {
 462               u16 len = b0->current_length - sizeof (ip6_header_t);
 463               oh6_0->ip6.payload_length =
 464                 clib_host_to_net_u16 (len - rewrite_len);
 465             }
 466           else
 467             {
 468               oh0->ip4.length =
 469                 clib_host_to_net_u16 (b0->current_length - rewrite_len);
 470               oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
 471               if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
 472                 {
 473                   ouh0->udp.length =
 474                     clib_host_to_net_u16 (clib_net_to_host_u16
 475                                           (ouh0->ip4.length) -
 476                                           ip4_header_bytes (&ouh0->ip4));
 477                 }
 478             }
 479
 480           b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
 481
 482           /* mbuf packet starts at ESP header */
 483           mb0->data_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
 484           mb0->pkt_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
 485           mb0->data_off = ((void *) esp0) - mb0->buf_addr;
 486
 487           u32 cipher_off, cipher_len, auth_len = 0;
 488           u32 *aad = NULL;
 489
 490           u8 *digest = vlib_buffer_get_tail (b0) - trunc_size;
 491           u64 digest_paddr =
 492             mb0->buf_physaddr + digest - ((u8 *) mb0->buf_addr);
 493
 494           if (!is_aead && cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC)
 495             {
 496               cipher_off = sizeof (esp_header_t);
 497               cipher_len = iv_size + pad_payload_len;
 498             }
 499           else                  /* CTR/GCM */
 500             {
 501               u32 *esp_iv = (u32 *) (esp0 + 1);
 502               esp_iv[0] = sa0->seq;
 503               esp_iv[1] = sa0->seq_hi;
 504
 505               cipher_off = sizeof (esp_header_t) + iv_size;
 506               cipher_len = pad_payload_len;
 507             }
 508
 509           if (is_aead)
 510             {
 511               aad = (u32 *) priv->aad;
 512               aad[0] = clib_host_to_net_u32 (sa0->spi);
 513               aad[1] = clib_host_to_net_u32 (sa0->seq);
 514
 515               /* aad[3] should always be 0 */
 516               if (PREDICT_FALSE (ipsec_sa_is_set_USE_EXTENDED_SEQ_NUM (sa0)))
 517                 aad[2] = clib_host_to_net_u32 (sa0->seq_hi);
 518               else
 519                 aad[2] = 0;
 520             }
 521           else
 522             {
 523               auth_len =
 524                 vlib_buffer_get_tail (b0) - ((u8 *) esp0) - trunc_size;
 525               if (ipsec_sa_is_set_USE_EXTENDED_SEQ_NUM (sa0))
 526                 {
 527                   u32 *_digest = (u32 *) digest;
 528                   _digest[0] = clib_host_to_net_u32 (sa0->seq_hi);
 529                   auth_len += 4;
 530                 }
 531             }
 532
 533           crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len,
 534                            0, auth_len, (u8 *) aad, digest, digest_paddr);
 535
 536         trace:
 537           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
 538             {
 539               esp_encrypt_trace_t *tr =
 540                 vlib_add_trace (vm, node, b0, sizeof (*tr));
 541               tr->crypto_alg = sa0->crypto_alg;
 542               tr->integ_alg = sa0->integ_alg;
 543               u8 *p = vlib_buffer_get_current (b0);
 544               if (!ipsec_sa_is_set_IS_TUNNEL (sa0))
 545                 p += vnet_buffer (b0)->ip.save_rewrite_length;
 546               clib_memcpy_fast (tr->packet_data, p, sizeof (tr->packet_data));
 547             }
 548         }
 549       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 550     }
 551   if (is_ip6)
 552     {
 553       vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
 554                                    ESP_ENCRYPT_ERROR_RX_PKTS,
 555                                    from_frame->n_vectors);
 556
 557       crypto_enqueue_ops (vm, cwm, dpdk_esp6_encrypt_node.index,
 558                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa);
 559     }
 560   else
 561     {
 562       vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
 563                                    ESP_ENCRYPT_ERROR_RX_PKTS,
 564                                    from_frame->n_vectors);
 565
 566       crypto_enqueue_ops (vm, cwm, dpdk_esp4_encrypt_node.index,
 567                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa);
 568     }
 569
 570   crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops);
 571
 572   return from_frame->n_vectors;
 573 }
 574
 575 VLIB_NODE_FN (dpdk_esp4_encrypt_node) (vlib_main_t * vm,
 576                                        vlib_node_runtime_t * node,
 577                                        vlib_frame_t * from_frame)
 578 {
 579   return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ );
 580 }
 581
 582 /* *INDENT-OFF* */
 583 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_node) = {
 584   .name = "dpdk-esp4-encrypt",
 585   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
 586   .vector_size = sizeof (u32),
 587   .format_trace = format_esp_encrypt_trace,
 588   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
 589   .error_strings = esp_encrypt_error_strings,
 590   .n_next_nodes = 1,
 591   .next_nodes =
 592     {
 593       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
 594     }
 595 };
 596 /* *INDENT-ON* */
 597
 598 VLIB_NODE_FN (dpdk_esp6_encrypt_node) (vlib_main_t * vm,
 599                                        vlib_node_runtime_t * node,
 600                                        vlib_frame_t * from_frame)
 601 {
 602   return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ );
 603 }
 604
 605 /* *INDENT-OFF* */
 606 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_node) = {
 607   .name = "dpdk-esp6-encrypt",
 608   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
 609   .vector_size = sizeof (u32),
 610   .format_trace = format_esp_encrypt_trace,
 611   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
 612   .error_strings = esp_encrypt_error_strings,
 613   .n_next_nodes = 1,
 614   .next_nodes =
 615     {
 616       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
 617     }
 618 };
 619 /* *INDENT-ON* */
 620
 621 /*
 622  * fd.io coding-style-patch-verification: ON
 623  *
 624  * Local Variables:
 625  * eval: (c-set-style "gnu")
 626  * End:
 627  */