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, int is_tun)
 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, bi1;
 159           vlib_buffer_t *b0, *b1;
 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;
 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           if (n_left_from > 1)
 192             {
 193               bi1 = from[1];
 194               b1 = vlib_get_buffer (vm, bi1);
 195
 196               CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD);
 197               CLIB_PREFETCH (b1->data - CLIB_CACHE_LINE_BYTES,
 198                              CLIB_CACHE_LINE_BYTES, STORE);
 199             }
 200
 201           op = ops[0];
 202           ops += 1;
 203           ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED);
 204
 205           dpdk_op_priv_t *priv = crypto_op_get_priv (op);
 206           /* store bi in op private */
 207           priv->bi = bi0;
 208
 209           u16 op_len =
 210             sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]);
 211           CLIB_PREFETCH (op, op_len, STORE);
 212
 213           if (is_tun)
 214             {
 215               u32 tmp;
 216               /* we are on a ipsec tunnel's feature arc */
 217               sa_index0 = *(u32 *) vnet_feature_next_with_data (&tmp, b0,
 218                                                                 sizeof
 219                                                                 (sa_index0));
 220             }
 221           else
 222             sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
 223
 224           if (sa_index0 != last_sa_index)
 225             {
 226               sa0 = pool_elt_at_index (im->sad, sa_index0);
 227
 228               cipher_alg =
 229                 vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg);
 230               auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg);
 231
 232               is_aead = (cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD);
 233
 234               if (is_aead)
 235                 auth_alg = cipher_alg;
 236
 237               res_idx = get_resource (cwm, sa0);
 238
 239               if (PREDICT_FALSE (res_idx == (u16) ~ 0))
 240                 {
 241                   clib_warning ("unsupported SA by thread index %u",
 242                                 thread_idx);
 243                   if (is_ip6)
 244                     vlib_node_increment_counter (vm,
 245                                                  dpdk_esp6_encrypt_node.index,
 246                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 247                   else
 248                     vlib_node_increment_counter (vm,
 249                                                  dpdk_esp4_encrypt_node.index,
 250                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 251                   to_next[0] = bi0;
 252                   to_next += 1;
 253                   n_left_to_next -= 1;
 254                   goto trace;
 255                 }
 256               res = vec_elt_at_index (dcm->resource, res_idx);
 257
 258               error = crypto_get_session (&session, sa_index0, res, cwm, 1);
 259               if (PREDICT_FALSE (error || !session))
 260                 {
 261                   clib_warning ("failed to get crypto session");
 262                   if (is_ip6)
 263                     vlib_node_increment_counter (vm,
 264                                                  dpdk_esp6_encrypt_node.index,
 265                                                  ESP_ENCRYPT_ERROR_SESSION,
 266                                                  1);
 267                   else
 268                     vlib_node_increment_counter (vm,
 269                                                  dpdk_esp4_encrypt_node.index,
 270                                                  ESP_ENCRYPT_ERROR_SESSION,
 271                                                  1);
 272                   to_next[0] = bi0;
 273                   to_next += 1;
 274                   n_left_to_next -= 1;
 275                   goto trace;
 276                 }
 277
 278               last_sa_index = sa_index0;
 279             }
 280
 281           if (PREDICT_FALSE (esp_seq_advance (sa0)))
 282             {
 283               clib_warning ("sequence number counter has cycled SPI %u",
 284                             sa0->spi);
 285               if (is_ip6)
 286                 vlib_node_increment_counter (vm,
 287                                              dpdk_esp6_encrypt_node.index,
 288                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
 289               else
 290                 vlib_node_increment_counter (vm,
 291                                              dpdk_esp4_encrypt_node.index,
 292                                              ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1);
 293               //TODO: rekey SA
 294               to_next[0] = bi0;
 295               to_next += 1;
 296               n_left_to_next -= 1;
 297               goto trace;
 298             }
 299
 300           orig_sz = b0->current_length;
 301
 302           /* TODO multi-seg support - total_length_not_including_first_buffer */
 303           vlib_increment_combined_counter
 304             (&ipsec_sa_counters, thread_index, sa_index0,
 305              1, b0->current_length);
 306
 307           res->ops[res->n_ops] = op;
 308           res->bi[res->n_ops] = bi0;
 309           res->n_ops += 1;
 310
 311           dpdk_gcm_cnt_blk *icb = &priv->cb;
 312
 313           crypto_set_icb (icb, sa0->salt, sa0->seq, sa0->seq_hi);
 314
 315           iv_size = cipher_alg->iv_len;
 316           trunc_size = auth_alg->trunc_size;
 317
 318           /* if UDP encapsulation is used adjust the address of the IP header */
 319           if (ipsec_sa_is_set_UDP_ENCAP (sa0) && !is_ip6)
 320             udp_encap_adv = sizeof (udp_header_t);
 321
 322           if (ipsec_sa_is_set_IS_TUNNEL (sa0))
 323             {
 324               rewrite_len = 0;
 325               if (!is_ip6 && !ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))       /* ip4inip4 */
 326                 {
 327                   /* in tunnel mode send it back to FIB */
 328                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP4_LOOKUP;
 329                   u8 adv = sizeof (ip4_header_t) + udp_encap_adv +
 330                     sizeof (esp_header_t) + iv_size;
 331                   vlib_buffer_advance (b0, -adv);
 332                   oh0 = vlib_buffer_get_current (b0);
 333                   ouh0 = vlib_buffer_get_current (b0);
 334                   next_hdr_type = IP_PROTOCOL_IP_IN_IP;
 335                   /*
 336                    * oh0->ip4.ip_version_and_header_length = 0x45;
 337                    * oh0->ip4.tos = ih0->ip4.tos;
 338                    * oh0->ip4.fragment_id = 0;
 339                    * oh0->ip4.flags_and_fragment_offset = 0;
 340                    */
 341                   oh0->ip4.checksum_data_64[0] =
 342                     clib_host_to_net_u64 (0x45ULL << 56);
 343                   /*
 344                    * oh0->ip4.ttl = 254;
 345                    * oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 346                    */
 347                   oh0->ip4.checksum_data_32[2] =
 348                     clib_host_to_net_u32 (0xfe320000);
 349
 350                   oh0->ip4.src_address.as_u32 =
 351                     sa0->tunnel_src_addr.ip4.as_u32;
 352                   oh0->ip4.dst_address.as_u32 =
 353                     sa0->tunnel_dst_addr.ip4.as_u32;
 354
 355                   if (ipsec_sa_is_set_UDP_ENCAP (sa0))
 356                     {
 357                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
 358                       esp0 = &ouh0->esp;
 359                     }
 360                   else
 361                     esp0 = &oh0->esp;
 362                   esp0->spi = clib_host_to_net_u32 (sa0->spi);
 363                   esp0->seq = clib_host_to_net_u32 (sa0->seq);
 364                 }
 365               else if (is_ip6 && ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
 366                 {
 367                   /* ip6inip6 */
 368                   /* in tunnel mode send it back to FIB */
 369                   priv->next = DPDK_CRYPTO_INPUT_NEXT_IP6_LOOKUP;
 370
 371                   u8 adv =
 372                     sizeof (ip6_header_t) + sizeof (esp_header_t) + iv_size;
 373                   vlib_buffer_advance (b0, -adv);
 374                   ih6_0 = (ip6_and_esp_header_t *) ih0;
 375                   oh6_0 = vlib_buffer_get_current (b0);
 376
 377                   next_hdr_type = IP_PROTOCOL_IPV6;
 378
 379                   oh6_0->ip6.ip_version_traffic_class_and_flow_label =
 380                     ih6_0->ip6.ip_version_traffic_class_and_flow_label;
 381
 382                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
 383                   oh6_0->ip6.hop_limit = 254;
 384                   oh6_0->ip6.src_address.as_u64[0] =
 385                     sa0->tunnel_src_addr.ip6.as_u64[0];
 386                   oh6_0->ip6.src_address.as_u64[1] =
 387                     sa0->tunnel_src_addr.ip6.as_u64[1];
 388                   oh6_0->ip6.dst_address.as_u64[0] =
 389                     sa0->tunnel_dst_addr.ip6.as_u64[0];
 390                   oh6_0->ip6.dst_address.as_u64[1] =
 391                     sa0->tunnel_dst_addr.ip6.as_u64[1];
 392                   esp0 = &oh6_0->esp;
 393                   oh6_0->esp.spi = clib_host_to_net_u32 (sa0->spi);
 394                   oh6_0->esp.seq = clib_host_to_net_u32 (sa0->seq);
 395                 }
 396               else              /* unsupported ip4inip6, ip6inip4 */
 397                 {
 398                   if (is_ip6)
 399                     vlib_node_increment_counter (vm,
 400                                                  dpdk_esp6_encrypt_node.index,
 401                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 402                   else
 403                     vlib_node_increment_counter (vm,
 404                                                  dpdk_esp4_encrypt_node.index,
 405                                                  ESP_ENCRYPT_ERROR_NOSUP, 1);
 406                   to_next[0] = bi0;
 407                   to_next += 1;
 408                   n_left_to_next -= 1;
 409                   goto trace;
 410                 }
 411               vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0;
 412             }
 413           else                  /* transport mode */
 414             {
 415               priv->next = DPDK_CRYPTO_INPUT_NEXT_INTERFACE_OUTPUT;
 416               rewrite_len = vnet_buffer (b0)->ip.save_rewrite_length;
 417               u16 adv = sizeof (esp_header_t) + iv_size + udp_encap_adv;
 418               vlib_buffer_advance (b0, -adv - rewrite_len);
 419               u8 *src = ((u8 *) ih0) - rewrite_len;
 420               u8 *dst = vlib_buffer_get_current (b0);
 421               oh0 = vlib_buffer_get_current (b0) + rewrite_len;
 422
 423               if (is_ip6)
 424                 {
 425                   orig_sz -= sizeof (ip6_header_t);
 426                   ih6_0 = (ip6_and_esp_header_t *) ih0;
 427                   next_hdr_type = ih6_0->ip6.protocol;
 428                   memmove (dst, src, rewrite_len + sizeof (ip6_header_t));
 429                   oh6_0 = (ip6_and_esp_header_t *) oh0;
 430                   oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
 431                   esp0 = &oh6_0->esp;
 432                 }
 433               else              /* ipv4 */
 434                 {
 435                   u16 ip_size = ip4_header_bytes (&ih0->ip4);
 436                   orig_sz -= ip_size;
 437                   next_hdr_type = ih0->ip4.protocol;
 438                   memmove (dst, src, rewrite_len + ip_size);
 439                   oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 440                   esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
 441                   if (ipsec_sa_is_set_UDP_ENCAP (sa0))
 442                     {
 443                       oh0->ip4.protocol = IP_PROTOCOL_UDP;
 444                       esp0 = (esp_header_t *)
 445                         (((u8 *) oh0) + ip_size + udp_encap_adv);
 446                     }
 447                   else
 448                     {
 449                       oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
 450                       esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size);
 451                     }
 452                 }
 453               esp0->spi = clib_host_to_net_u32 (sa0->spi);
 454               esp0->seq = clib_host_to_net_u32 (sa0->seq);
 455             }
 456
 457           if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
 458             {
 459               ouh0->udp.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
 460               ouh0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
 461               ouh0->udp.checksum = 0;
 462             }
 463           ASSERT (is_pow2 (cipher_alg->boundary));
 464           u16 mask = cipher_alg->boundary - 1;
 465           u16 pad_payload_len = ((orig_sz + 2) + mask) & ~mask;
 466           u8 pad_bytes = pad_payload_len - 2 - orig_sz;
 467
 468           u8 *padding =
 469             vlib_buffer_put_uninit (b0, pad_bytes + 2 + trunc_size);
 470
 471           /* The extra pad bytes would be overwritten by the digest */
 472           if (pad_bytes)
 473             clib_memcpy_fast (padding, pad_data, 16);
 474
 475           f0 = (esp_footer_t *) (padding + pad_bytes);
 476           f0->pad_length = pad_bytes;
 477           f0->next_header = next_hdr_type;
 478
 479           if (is_ip6)
 480             {
 481               u16 len = b0->current_length - sizeof (ip6_header_t);
 482               oh6_0->ip6.payload_length =
 483                 clib_host_to_net_u16 (len - rewrite_len);
 484             }
 485           else
 486             {
 487               oh0->ip4.length =
 488                 clib_host_to_net_u16 (b0->current_length - rewrite_len);
 489               oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
 490               if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0)
 491                 {
 492                   ouh0->udp.length =
 493                     clib_host_to_net_u16 (clib_net_to_host_u16
 494                                           (ouh0->ip4.length) -
 495                                           ip4_header_bytes (&ouh0->ip4));
 496                 }
 497             }
 498
 499           b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
 500
 501           /* mbuf packet starts at ESP header */
 502           mb0->data_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
 503           mb0->pkt_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0);
 504           mb0->data_off = ((void *) esp0) - mb0->buf_addr;
 505
 506           u32 cipher_off, cipher_len, auth_len = 0;
 507           u32 *aad = NULL;
 508
 509           u8 *digest = vlib_buffer_get_tail (b0) - trunc_size;
 510           u64 digest_paddr =
 511             mb0->buf_physaddr + digest - ((u8 *) mb0->buf_addr);
 512
 513           if (!is_aead && cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC)
 514             {
 515               cipher_off = sizeof (esp_header_t);
 516               cipher_len = iv_size + pad_payload_len;
 517             }
 518           else                  /* CTR/GCM */
 519             {
 520               u32 *esp_iv = (u32 *) (esp0 + 1);
 521               esp_iv[0] = sa0->seq;
 522               esp_iv[1] = sa0->seq_hi;
 523
 524               cipher_off = sizeof (esp_header_t) + iv_size;
 525               cipher_len = pad_payload_len;
 526             }
 527
 528           if (is_aead)
 529             {
 530               aad = (u32 *) priv->aad;
 531               aad[0] = clib_host_to_net_u32 (sa0->spi);
 532               aad[1] = clib_host_to_net_u32 (sa0->seq);
 533
 534               /* aad[3] should always be 0 */
 535               if (PREDICT_FALSE (ipsec_sa_is_set_USE_ESN (sa0)))
 536                 aad[2] = clib_host_to_net_u32 (sa0->seq_hi);
 537               else
 538                 aad[2] = 0;
 539             }
 540           else
 541             {
 542               auth_len =
 543                 vlib_buffer_get_tail (b0) - ((u8 *) esp0) - trunc_size;
 544               if (ipsec_sa_is_set_USE_ESN (sa0))
 545                 {
 546                   u32 *_digest = (u32 *) digest;
 547                   _digest[0] = clib_host_to_net_u32 (sa0->seq_hi);
 548                   auth_len += 4;
 549                 }
 550             }
 551
 552           crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len,
 553                            0, auth_len, (u8 *) aad, digest, digest_paddr);
 554
 555         trace:
 556           if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
 557             {
 558               esp_encrypt_trace_t *tr =
 559                 vlib_add_trace (vm, node, b0, sizeof (*tr));
 560               tr->crypto_alg = sa0->crypto_alg;
 561               tr->integ_alg = sa0->integ_alg;
 562               u8 *p = vlib_buffer_get_current (b0);
 563               if (!ipsec_sa_is_set_IS_TUNNEL (sa0))
 564                 p += vnet_buffer (b0)->ip.save_rewrite_length;
 565               clib_memcpy_fast (tr->packet_data, p, sizeof (tr->packet_data));
 566             }
 567         }
 568       vlib_put_next_frame (vm, node, next_index, n_left_to_next);
 569     }
 570   if (is_ip6)
 571     {
 572       vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index,
 573                                    ESP_ENCRYPT_ERROR_RX_PKTS,
 574                                    from_frame->n_vectors);
 575
 576       crypto_enqueue_ops (vm, cwm, dpdk_esp6_encrypt_node.index,
 577                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa);
 578     }
 579   else
 580     {
 581       vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index,
 582                                    ESP_ENCRYPT_ERROR_RX_PKTS,
 583                                    from_frame->n_vectors);
 584
 585       crypto_enqueue_ops (vm, cwm, dpdk_esp4_encrypt_node.index,
 586                           ESP_ENCRYPT_ERROR_ENQ_FAIL, numa);
 587     }
 588
 589   crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops);
 590
 591   return from_frame->n_vectors;
 592 }
 593
 594 VLIB_NODE_FN (dpdk_esp4_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, 0 /*is_ip6 */ , 0);
 599 }
 600
 601 /* *INDENT-OFF* */
 602 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_node) = {
 603   .name = "dpdk-esp4-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 VLIB_NODE_FN (dpdk_esp6_encrypt_node) (vlib_main_t * vm,
 618                                        vlib_node_runtime_t * node,
 619                                        vlib_frame_t * from_frame)
 620 {
 621   return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 0);
 622 }
 623
 624 /* *INDENT-OFF* */
 625 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_node) = {
 626   .name = "dpdk-esp6-encrypt",
 627   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
 628   .vector_size = sizeof (u32),
 629   .format_trace = format_esp_encrypt_trace,
 630   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
 631   .error_strings = esp_encrypt_error_strings,
 632   .n_next_nodes = 1,
 633   .next_nodes =
 634     {
 635       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
 636     }
 637 };
 638 /* *INDENT-ON* */
 639
 640 VLIB_NODE_FN (dpdk_esp4_encrypt_tun_node) (vlib_main_t * vm,
 641                                            vlib_node_runtime_t * node,
 642                                            vlib_frame_t * from_frame)
 643 {
 644   return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ , 1);
 645 }
 646
 647 /* *INDENT-OFF* */
 648 VLIB_REGISTER_NODE (dpdk_esp4_encrypt_tun_node) = {
 649   .name = "dpdk-esp4-encrypt-tun",
 650   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
 651   .vector_size = sizeof (u32),
 652   .format_trace = format_esp_encrypt_trace,
 653   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
 654   .error_strings = esp_encrypt_error_strings,
 655   .n_next_nodes = 1,
 656   .next_nodes =
 657     {
 658       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
 659     }
 660 };
 661
 662 VNET_FEATURE_INIT (dpdk_esp4_encrypt_tun_feat_node, static) =
 663 {
 664   .arc_name = "ip4-output",
 665   .node_name = "dpdk-esp4-encrypt-tun",
 666   .runs_before = VNET_FEATURES ("adj-midchain-tx"),
 667 };
 668 /* *INDENT-ON* */
 669
 670 VLIB_NODE_FN (dpdk_esp6_encrypt_tun_node) (vlib_main_t * vm,
 671                                            vlib_node_runtime_t * node,
 672                                            vlib_frame_t * from_frame)
 673 {
 674   return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 1);
 675 }
 676
 677 /* *INDENT-OFF* */
 678 VLIB_REGISTER_NODE (dpdk_esp6_encrypt_tun_node) = {
 679   .name = "dpdk-esp6-encrypt-tun",
 680   .flags = VLIB_NODE_FLAG_IS_OUTPUT,
 681   .vector_size = sizeof (u32),
 682   .format_trace = format_esp_encrypt_trace,
 683   .n_errors = ARRAY_LEN (esp_encrypt_error_strings),
 684   .error_strings = esp_encrypt_error_strings,
 685   .n_next_nodes = 1,
 686   .next_nodes =
 687     {
 688       [ESP_ENCRYPT_NEXT_DROP] = "error-drop",
 689     }
 690 };
 691
 692 VNET_FEATURE_INIT (dpdk_esp6_encrypt_tun_feat_node, static) =
 693 {
 694   .arc_name = "ip6-output",
 695   .node_name = "dpdk-esp6-encrypt-tun",
 696   .runs_before = VNET_FEATURES ("adj-midchain-tx"),
 697 };
 698 /* *INDENT-ON* */
 699
 700 /*
 701  * fd.io coding-style-patch-verification: ON
 702  *
 703  * Local Variables:
 704  * eval: (c-set-style "gnu")
 705  * End:
 706  */