examples/ipsec-secgw/sa.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2017 Intel Corporation
   3  */
   4
   5 /*
   6  * Security Associations
   7  */
   8 #include <sys/types.h>
   9 #include <netinet/in.h>
  10 #include <netinet/ip.h>
  11 #include <netinet/ip6.h>
  12
  13 #include <rte_memzone.h>
  14 #include <rte_crypto.h>
  15 #include <rte_security.h>
  16 #include <rte_cryptodev.h>
  17 #include <rte_byteorder.h>
  18 #include <rte_errno.h>
  19 #include <rte_ip.h>
  20 #include <rte_random.h>
  21 #include <rte_ethdev.h>
  22 #include <rte_malloc.h>
  23
  24 #include "ipsec.h"
  25 #include "esp.h"
  26 #include "parser.h"
  27
  28 #define IPDEFTTL 64
  29
  30 struct supported_cipher_algo {
  31         const char *keyword;
  32         enum rte_crypto_cipher_algorithm algo;
  33         uint16_t iv_len;
  34         uint16_t block_size;
  35         uint16_t key_len;
  36 };
  37
  38 struct supported_auth_algo {
  39         const char *keyword;
  40         enum rte_crypto_auth_algorithm algo;
  41         uint16_t digest_len;
  42         uint16_t key_len;
  43         uint8_t key_not_req;
  44 };
  45
  46 struct supported_aead_algo {
  47         const char *keyword;
  48         enum rte_crypto_aead_algorithm algo;
  49         uint16_t iv_len;
  50         uint16_t block_size;
  51         uint16_t digest_len;
  52         uint16_t key_len;
  53         uint8_t aad_len;
  54 };
  55
  56
  57 const struct supported_cipher_algo cipher_algos[] = {
  58         {
  59                 .keyword = "null",
  60                 .algo = RTE_CRYPTO_CIPHER_NULL,
  61                 .iv_len = 0,
  62                 .block_size = 4,
  63                 .key_len = 0
  64         },
  65         {
  66                 .keyword = "aes-128-cbc",
  67                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  68                 .iv_len = 16,
  69                 .block_size = 16,
  70                 .key_len = 16
  71         },
  72         {
  73                 .keyword = "aes-256-cbc",
  74                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  75                 .iv_len = 16,
  76                 .block_size = 16,
  77                 .key_len = 32
  78         },
  79         {
  80                 .keyword = "aes-128-ctr",
  81                 .algo = RTE_CRYPTO_CIPHER_AES_CTR,
  82                 .iv_len = 8,
  83                 .block_size = 16, /* XXX AESNI MB limition, should be 4 */
  84                 .key_len = 20
  85         },
  86         {
  87                 .keyword = "3des-cbc",
  88                 .algo = RTE_CRYPTO_CIPHER_3DES_CBC,
  89                 .iv_len = 8,
  90                 .block_size = 8,
  91                 .key_len = 24
  92         }
  93 };
  94
  95 const struct supported_auth_algo auth_algos[] = {
  96         {
  97                 .keyword = "null",
  98                 .algo = RTE_CRYPTO_AUTH_NULL,
  99                 .digest_len = 0,
 100                 .key_len = 0,
 101                 .key_not_req = 1
 102         },
 103         {
 104                 .keyword = "sha1-hmac",
 105                 .algo = RTE_CRYPTO_AUTH_SHA1_HMAC,
 106                 .digest_len = 12,
 107                 .key_len = 20
 108         },
 109         {
 110                 .keyword = "sha256-hmac",
 111                 .algo = RTE_CRYPTO_AUTH_SHA256_HMAC,
 112                 .digest_len = 12,
 113                 .key_len = 32
 114         }
 115 };
 116
 117 const struct supported_aead_algo aead_algos[] = {
 118         {
 119                 .keyword = "aes-128-gcm",
 120                 .algo = RTE_CRYPTO_AEAD_AES_GCM,
 121                 .iv_len = 8,
 122                 .block_size = 4,
 123                 .key_len = 20,
 124                 .digest_len = 16,
 125                 .aad_len = 8,
 126         }
 127 };
 128
 129 struct ipsec_sa sa_out[IPSEC_SA_MAX_ENTRIES];
 130 uint32_t nb_sa_out;
 131
 132 struct ipsec_sa sa_in[IPSEC_SA_MAX_ENTRIES];
 133 uint32_t nb_sa_in;
 134
 135 static const struct supported_cipher_algo *
 136 find_match_cipher_algo(const char *cipher_keyword)
 137 {
 138         size_t i;
 139
 140         for (i = 0; i < RTE_DIM(cipher_algos); i++) {
 141                 const struct supported_cipher_algo *algo =
 142                         &cipher_algos[i];
 143
 144                 if (strcmp(cipher_keyword, algo->keyword) == 0)
 145                         return algo;
 146         }
 147
 148         return NULL;
 149 }
 150
 151 static const struct supported_auth_algo *
 152 find_match_auth_algo(const char *auth_keyword)
 153 {
 154         size_t i;
 155
 156         for (i = 0; i < RTE_DIM(auth_algos); i++) {
 157                 const struct supported_auth_algo *algo =
 158                         &auth_algos[i];
 159
 160                 if (strcmp(auth_keyword, algo->keyword) == 0)
 161                         return algo;
 162         }
 163
 164         return NULL;
 165 }
 166
 167 static const struct supported_aead_algo *
 168 find_match_aead_algo(const char *aead_keyword)
 169 {
 170         size_t i;
 171
 172         for (i = 0; i < RTE_DIM(aead_algos); i++) {
 173                 const struct supported_aead_algo *algo =
 174                         &aead_algos[i];
 175
 176                 if (strcmp(aead_keyword, algo->keyword) == 0)
 177                         return algo;
 178         }
 179
 180         return NULL;
 181 }
 182
 183 /** parse_key_string
 184  *  parse x:x:x:x.... hex number key string into uint8_t *key
 185  *  return:
 186  *  > 0: number of bytes parsed
 187  *  0:   failed
 188  */
 189 static uint32_t
 190 parse_key_string(const char *key_str, uint8_t *key)
 191 {
 192         const char *pt_start = key_str, *pt_end = key_str;
 193         uint32_t nb_bytes = 0;
 194
 195         while (pt_end != NULL) {
 196                 char sub_str[3] = {0};
 197
 198                 pt_end = strchr(pt_start, ':');
 199
 200                 if (pt_end == NULL) {
 201                         if (strlen(pt_start) > 2)
 202                                 return 0;
 203                         strncpy(sub_str, pt_start, 2);
 204                 } else {
 205                         if (pt_end - pt_start > 2)
 206                                 return 0;
 207
 208                         strncpy(sub_str, pt_start, pt_end - pt_start);
 209                         pt_start = pt_end + 1;
 210                 }
 211
 212                 key[nb_bytes++] = strtol(sub_str, NULL, 16);
 213         }
 214
 215         return nb_bytes;
 216 }
 217
 218 void
 219 parse_sa_tokens(char **tokens, uint32_t n_tokens,
 220         struct parse_status *status)
 221 {
 222         struct ipsec_sa *rule = NULL;
 223         uint32_t ti; /*token index*/
 224         uint32_t *ri /*rule index*/;
 225         uint32_t cipher_algo_p = 0;
 226         uint32_t auth_algo_p = 0;
 227         uint32_t aead_algo_p = 0;
 228         uint32_t src_p = 0;
 229         uint32_t dst_p = 0;
 230         uint32_t mode_p = 0;
 231         uint32_t type_p = 0;
 232         uint32_t portid_p = 0;
 233
 234         if (strcmp(tokens[0], "in") == 0) {
 235                 ri = &nb_sa_in;
 236
 237                 APP_CHECK(*ri <= IPSEC_SA_MAX_ENTRIES - 1, status,
 238                         "too many sa rules, abort insertion\n");
 239                 if (status->status < 0)
 240                         return;
 241
 242                 rule = &sa_in[*ri];
 243         } else {
 244                 ri = &nb_sa_out;
 245
 246                 APP_CHECK(*ri <= IPSEC_SA_MAX_ENTRIES - 1, status,
 247                         "too many sa rules, abort insertion\n");
 248                 if (status->status < 0)
 249                         return;
 250
 251                 rule = &sa_out[*ri];
 252         }
 253
 254         /* spi number */
 255         APP_CHECK_TOKEN_IS_NUM(tokens, 1, status);
 256         if (status->status < 0)
 257                 return;
 258         if (atoi(tokens[1]) == INVALID_SPI)
 259                 return;
 260         rule->spi = atoi(tokens[1]);
 261
 262         for (ti = 2; ti < n_tokens; ti++) {
 263                 if (strcmp(tokens[ti], "mode") == 0) {
 264                         APP_CHECK_PRESENCE(mode_p, tokens[ti], status);
 265                         if (status->status < 0)
 266                                 return;
 267
 268                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 269                         if (status->status < 0)
 270                                 return;
 271
 272                         if (strcmp(tokens[ti], "ipv4-tunnel") == 0)
 273                                 rule->flags = IP4_TUNNEL;
 274                         else if (strcmp(tokens[ti], "ipv6-tunnel") == 0)
 275                                 rule->flags = IP6_TUNNEL;
 276                         else if (strcmp(tokens[ti], "transport") == 0)
 277                                 rule->flags = TRANSPORT;
 278                         else {
 279                                 APP_CHECK(0, status, "unrecognized "
 280                                         "input \"%s\"", tokens[ti]);
 281                                 return;
 282                         }
 283
 284                         mode_p = 1;
 285                         continue;
 286                 }
 287
 288                 if (strcmp(tokens[ti], "cipher_algo") == 0) {
 289                         const struct supported_cipher_algo *algo;
 290                         uint32_t key_len;
 291
 292                         APP_CHECK_PRESENCE(cipher_algo_p, tokens[ti],
 293                                 status);
 294                         if (status->status < 0)
 295                                 return;
 296
 297                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 298                         if (status->status < 0)
 299                                 return;
 300
 301                         algo = find_match_cipher_algo(tokens[ti]);
 302
 303                         APP_CHECK(algo != NULL, status, "unrecognized "
 304                                 "input \"%s\"", tokens[ti]);
 305
 306                         rule->cipher_algo = algo->algo;
 307                         rule->block_size = algo->block_size;
 308                         rule->iv_len = algo->iv_len;
 309                         rule->cipher_key_len = algo->key_len;
 310
 311                         /* for NULL algorithm, no cipher key required */
 312                         if (rule->cipher_algo == RTE_CRYPTO_CIPHER_NULL) {
 313                                 cipher_algo_p = 1;
 314                                 continue;
 315                         }
 316
 317                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 318                         if (status->status < 0)
 319                                 return;
 320
 321                         APP_CHECK(strcmp(tokens[ti], "cipher_key") == 0,
 322                                 status, "unrecognized input \"%s\", "
 323                                 "expect \"cipher_key\"", tokens[ti]);
 324                         if (status->status < 0)
 325                                 return;
 326
 327                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 328                         if (status->status < 0)
 329                                 return;
 330
 331                         key_len = parse_key_string(tokens[ti],
 332                                 rule->cipher_key);
 333                         APP_CHECK(key_len == rule->cipher_key_len, status,
 334                                 "unrecognized input \"%s\"", tokens[ti]);
 335                         if (status->status < 0)
 336                                 return;
 337
 338                         if (algo->algo == RTE_CRYPTO_CIPHER_AES_CBC ||
 339                                 algo->algo == RTE_CRYPTO_CIPHER_3DES_CBC)
 340                                 rule->salt = (uint32_t)rte_rand();
 341
 342                         if (algo->algo == RTE_CRYPTO_CIPHER_AES_CTR) {
 343                                 key_len -= 4;
 344                                 rule->cipher_key_len = key_len;
 345                                 memcpy(&rule->salt,
 346                                         &rule->cipher_key[key_len], 4);
 347                         }
 348
 349                         cipher_algo_p = 1;
 350                         continue;
 351                 }
 352
 353                 if (strcmp(tokens[ti], "auth_algo") == 0) {
 354                         const struct supported_auth_algo *algo;
 355                         uint32_t key_len;
 356
 357                         APP_CHECK_PRESENCE(auth_algo_p, tokens[ti],
 358                                 status);
 359                         if (status->status < 0)
 360                                 return;
 361
 362                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 363                         if (status->status < 0)
 364                                 return;
 365
 366                         algo = find_match_auth_algo(tokens[ti]);
 367                         APP_CHECK(algo != NULL, status, "unrecognized "
 368                                 "input \"%s\"", tokens[ti]);
 369
 370                         rule->auth_algo = algo->algo;
 371                         rule->auth_key_len = algo->key_len;
 372                         rule->digest_len = algo->digest_len;
 373
 374                         /* NULL algorithm and combined algos do not
 375                          * require auth key
 376                          */
 377                         if (algo->key_not_req) {
 378                                 auth_algo_p = 1;
 379                                 continue;
 380                         }
 381
 382                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 383                         if (status->status < 0)
 384                                 return;
 385
 386                         APP_CHECK(strcmp(tokens[ti], "auth_key") == 0,
 387                                 status, "unrecognized input \"%s\", "
 388                                 "expect \"auth_key\"", tokens[ti]);
 389                         if (status->status < 0)
 390                                 return;
 391
 392                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 393                         if (status->status < 0)
 394                                 return;
 395
 396                         key_len = parse_key_string(tokens[ti],
 397                                 rule->auth_key);
 398                         APP_CHECK(key_len == rule->auth_key_len, status,
 399                                 "unrecognized input \"%s\"", tokens[ti]);
 400                         if (status->status < 0)
 401                                 return;
 402
 403                         auth_algo_p = 1;
 404                         continue;
 405                 }
 406
 407                 if (strcmp(tokens[ti], "aead_algo") == 0) {
 408                         const struct supported_aead_algo *algo;
 409                         uint32_t key_len;
 410
 411                         APP_CHECK_PRESENCE(aead_algo_p, tokens[ti],
 412                                 status);
 413                         if (status->status < 0)
 414                                 return;
 415
 416                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 417                         if (status->status < 0)
 418                                 return;
 419
 420                         algo = find_match_aead_algo(tokens[ti]);
 421
 422                         APP_CHECK(algo != NULL, status, "unrecognized "
 423                                 "input \"%s\"", tokens[ti]);
 424
 425                         rule->aead_algo = algo->algo;
 426                         rule->cipher_key_len = algo->key_len;
 427                         rule->digest_len = algo->digest_len;
 428                         rule->aad_len = algo->aad_len;
 429                         rule->block_size = algo->block_size;
 430                         rule->iv_len = algo->iv_len;
 431
 432                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 433                         if (status->status < 0)
 434                                 return;
 435
 436                         APP_CHECK(strcmp(tokens[ti], "aead_key") == 0,
 437                                 status, "unrecognized input \"%s\", "
 438                                 "expect \"aead_key\"", tokens[ti]);
 439                         if (status->status < 0)
 440                                 return;
 441
 442                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 443                         if (status->status < 0)
 444                                 return;
 445
 446                         key_len = parse_key_string(tokens[ti],
 447                                 rule->cipher_key);
 448                         APP_CHECK(key_len == rule->cipher_key_len, status,
 449                                 "unrecognized input \"%s\"", tokens[ti]);
 450                         if (status->status < 0)
 451                                 return;
 452
 453                         key_len -= 4;
 454                         rule->cipher_key_len = key_len;
 455                         memcpy(&rule->salt,
 456                                 &rule->cipher_key[key_len], 4);
 457
 458                         aead_algo_p = 1;
 459                         continue;
 460                 }
 461
 462                 if (strcmp(tokens[ti], "src") == 0) {
 463                         APP_CHECK_PRESENCE(src_p, tokens[ti], status);
 464                         if (status->status < 0)
 465                                 return;
 466
 467                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 468                         if (status->status < 0)
 469                                 return;
 470
 471                         if (rule->flags == IP4_TUNNEL) {
 472                                 struct in_addr ip;
 473
 474                                 APP_CHECK(parse_ipv4_addr(tokens[ti],
 475                                         &ip, NULL) == 0, status,
 476                                         "unrecognized input \"%s\", "
 477                                         "expect valid ipv4 addr",
 478                                         tokens[ti]);
 479                                 if (status->status < 0)
 480                                         return;
 481                                 rule->src.ip.ip4 = rte_bswap32(
 482                                         (uint32_t)ip.s_addr);
 483                         } else if (rule->flags == IP6_TUNNEL) {
 484                                 struct in6_addr ip;
 485
 486                                 APP_CHECK(parse_ipv6_addr(tokens[ti], &ip,
 487                                         NULL) == 0, status,
 488                                         "unrecognized input \"%s\", "
 489                                         "expect valid ipv6 addr",
 490                                         tokens[ti]);
 491                                 if (status->status < 0)
 492                                         return;
 493                                 memcpy(rule->src.ip.ip6.ip6_b,
 494                                         ip.s6_addr, 16);
 495                         } else if (rule->flags == TRANSPORT) {
 496                                 APP_CHECK(0, status, "unrecognized input "
 497                                         "\"%s\"", tokens[ti]);
 498                                 return;
 499                         }
 500
 501                         src_p = 1;
 502                         continue;
 503                 }
 504
 505                 if (strcmp(tokens[ti], "dst") == 0) {
 506                         APP_CHECK_PRESENCE(dst_p, tokens[ti], status);
 507                         if (status->status < 0)
 508                                 return;
 509
 510                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 511                         if (status->status < 0)
 512                                 return;
 513
 514                         if (rule->flags == IP4_TUNNEL) {
 515                                 struct in_addr ip;
 516
 517                                 APP_CHECK(parse_ipv4_addr(tokens[ti],
 518                                         &ip, NULL) == 0, status,
 519                                         "unrecognized input \"%s\", "
 520                                         "expect valid ipv4 addr",
 521                                         tokens[ti]);
 522                                 if (status->status < 0)
 523                                         return;
 524                                 rule->dst.ip.ip4 = rte_bswap32(
 525                                         (uint32_t)ip.s_addr);
 526                         } else if (rule->flags == IP6_TUNNEL) {
 527                                 struct in6_addr ip;
 528
 529                                 APP_CHECK(parse_ipv6_addr(tokens[ti], &ip,
 530                                         NULL) == 0, status,
 531                                         "unrecognized input \"%s\", "
 532                                         "expect valid ipv6 addr",
 533                                         tokens[ti]);
 534                                 if (status->status < 0)
 535                                         return;
 536                                 memcpy(rule->dst.ip.ip6.ip6_b, ip.s6_addr, 16);
 537                         } else if (rule->flags == TRANSPORT) {
 538                                 APP_CHECK(0, status, "unrecognized "
 539                                         "input \"%s\"", tokens[ti]);
 540                                 return;
 541                         }
 542
 543                         dst_p = 1;
 544                         continue;
 545                 }
 546
 547                 if (strcmp(tokens[ti], "type") == 0) {
 548                         APP_CHECK_PRESENCE(type_p, tokens[ti], status);
 549                         if (status->status < 0)
 550                                 return;
 551
 552                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 553                         if (status->status < 0)
 554                                 return;
 555
 556                         if (strcmp(tokens[ti], "inline-crypto-offload") == 0)
 557                                 rule->type =
 558                                         RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO;
 559                         else if (strcmp(tokens[ti],
 560                                         "inline-protocol-offload") == 0)
 561                                 rule->type =
 562                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL;
 563                         else if (strcmp(tokens[ti],
 564                                         "lookaside-protocol-offload") == 0)
 565                                 rule->type =
 566                                 RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL;
 567                         else if (strcmp(tokens[ti], "no-offload") == 0)
 568                                 rule->type = RTE_SECURITY_ACTION_TYPE_NONE;
 569                         else {
 570                                 APP_CHECK(0, status, "Invalid input \"%s\"",
 571                                                 tokens[ti]);
 572                                 return;
 573                         }
 574
 575                         type_p = 1;
 576                         continue;
 577                 }
 578
 579                 if (strcmp(tokens[ti], "port_id") == 0) {
 580                         APP_CHECK_PRESENCE(portid_p, tokens[ti], status);
 581                         if (status->status < 0)
 582                                 return;
 583                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 584                         if (status->status < 0)
 585                                 return;
 586                         rule->portid = atoi(tokens[ti]);
 587                         if (status->status < 0)
 588                                 return;
 589                         portid_p = 1;
 590                         continue;
 591                 }
 592
 593                 /* unrecognizeable input */
 594                 APP_CHECK(0, status, "unrecognized input \"%s\"",
 595                         tokens[ti]);
 596                 return;
 597         }
 598
 599         if (aead_algo_p) {
 600                 APP_CHECK(cipher_algo_p == 0, status,
 601                                 "AEAD used, no need for cipher options");
 602                 if (status->status < 0)
 603                         return;
 604
 605                 APP_CHECK(auth_algo_p == 0, status,
 606                                 "AEAD used, no need for auth options");
 607                 if (status->status < 0)
 608                         return;
 609         } else {
 610                 APP_CHECK(cipher_algo_p == 1, status, "missing cipher or AEAD options");
 611                 if (status->status < 0)
 612                         return;
 613
 614                 APP_CHECK(auth_algo_p == 1, status, "missing auth or AEAD options");
 615                 if (status->status < 0)
 616                         return;
 617         }
 618
 619         APP_CHECK(mode_p == 1, status, "missing mode option");
 620         if (status->status < 0)
 621                 return;
 622
 623         if ((rule->type != RTE_SECURITY_ACTION_TYPE_NONE) && (portid_p == 0))
 624                 printf("Missing portid option, falling back to non-offload\n");
 625
 626         if (!type_p || !portid_p) {
 627                 rule->type = RTE_SECURITY_ACTION_TYPE_NONE;
 628                 rule->portid = -1;
 629         }
 630
 631         *ri = *ri + 1;
 632 }
 633
 634 static inline void
 635 print_one_sa_rule(const struct ipsec_sa *sa, int inbound)
 636 {
 637         uint32_t i;
 638         uint8_t a, b, c, d;
 639
 640         printf("\tspi_%s(%3u):", inbound?"in":"out", sa->spi);
 641
 642         for (i = 0; i < RTE_DIM(cipher_algos); i++) {
 643                 if (cipher_algos[i].algo == sa->cipher_algo &&
 644                                 cipher_algos[i].key_len == sa->cipher_key_len) {
 645                         printf("%s ", cipher_algos[i].keyword);
 646                         break;
 647                 }
 648         }
 649
 650         for (i = 0; i < RTE_DIM(auth_algos); i++) {
 651                 if (auth_algos[i].algo == sa->auth_algo) {
 652                         printf("%s ", auth_algos[i].keyword);
 653                         break;
 654                 }
 655         }
 656
 657         for (i = 0; i < RTE_DIM(aead_algos); i++) {
 658                 if (aead_algos[i].algo == sa->aead_algo) {
 659                         printf("%s ", aead_algos[i].keyword);
 660                         break;
 661                 }
 662         }
 663
 664         printf("mode:");
 665
 666         switch (sa->flags) {
 667         case IP4_TUNNEL:
 668                 printf("IP4Tunnel ");
 669                 uint32_t_to_char(sa->src.ip.ip4, &a, &b, &c, &d);
 670                 printf("%hhu.%hhu.%hhu.%hhu ", d, c, b, a);
 671                 uint32_t_to_char(sa->dst.ip.ip4, &a, &b, &c, &d);
 672                 printf("%hhu.%hhu.%hhu.%hhu", d, c, b, a);
 673                 break;
 674         case IP6_TUNNEL:
 675                 printf("IP6Tunnel ");
 676                 for (i = 0; i < 16; i++) {
 677                         if (i % 2 && i != 15)
 678                                 printf("%.2x:", sa->src.ip.ip6.ip6_b[i]);
 679                         else
 680                                 printf("%.2x", sa->src.ip.ip6.ip6_b[i]);
 681                 }
 682                 printf(" ");
 683                 for (i = 0; i < 16; i++) {
 684                         if (i % 2 && i != 15)
 685                                 printf("%.2x:", sa->dst.ip.ip6.ip6_b[i]);
 686                         else
 687                                 printf("%.2x", sa->dst.ip.ip6.ip6_b[i]);
 688                 }
 689                 break;
 690         case TRANSPORT:
 691                 printf("Transport");
 692                 break;
 693         }
 694         printf("\n");
 695 }
 696
 697 struct sa_ctx {
 698         void *satbl; /* pointer to array of rte_ipsec_sa objects*/
 699         struct ipsec_sa sa[IPSEC_SA_MAX_ENTRIES];
 700         union {
 701                 struct {
 702                         struct rte_crypto_sym_xform a;
 703                         struct rte_crypto_sym_xform b;
 704                 };
 705         } xf[IPSEC_SA_MAX_ENTRIES];
 706 };
 707
 708 static struct sa_ctx *
 709 sa_create(const char *name, int32_t socket_id)
 710 {
 711         char s[PATH_MAX];
 712         struct sa_ctx *sa_ctx;
 713         uint32_t mz_size;
 714         const struct rte_memzone *mz;
 715
 716         snprintf(s, sizeof(s), "%s_%u", name, socket_id);
 717
 718         /* Create SA array table */
 719         printf("Creating SA context with %u maximum entries\n",
 720                         IPSEC_SA_MAX_ENTRIES);
 721
 722         mz_size = sizeof(struct sa_ctx);
 723         mz = rte_memzone_reserve(s, mz_size, socket_id,
 724                         RTE_MEMZONE_1GB | RTE_MEMZONE_SIZE_HINT_ONLY);
 725         if (mz == NULL) {
 726                 printf("Failed to allocate SA DB memory\n");
 727                 rte_errno = -ENOMEM;
 728                 return NULL;
 729         }
 730
 731         sa_ctx = (struct sa_ctx *)mz->addr;
 732
 733         return sa_ctx;
 734 }
 735
 736 static int
 737 check_eth_dev_caps(uint16_t portid, uint32_t inbound)
 738 {
 739         struct rte_eth_dev_info dev_info;
 740
 741         rte_eth_dev_info_get(portid, &dev_info);
 742
 743         if (inbound) {
 744                 if ((dev_info.rx_offload_capa &
 745                                 DEV_RX_OFFLOAD_SECURITY) == 0) {
 746                         RTE_LOG(WARNING, PORT,
 747                                 "hardware RX IPSec offload is not supported\n");
 748                         return -EINVAL;
 749                 }
 750
 751         } else { /* outbound */
 752                 if ((dev_info.tx_offload_capa &
 753                                 DEV_TX_OFFLOAD_SECURITY) == 0) {
 754                         RTE_LOG(WARNING, PORT,
 755                                 "hardware TX IPSec offload is not supported\n");
 756                         return -EINVAL;
 757                 }
 758         }
 759         return 0;
 760 }
 761
 762
 763 static int
 764 sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
 765                 uint32_t nb_entries, uint32_t inbound)
 766 {
 767         struct ipsec_sa *sa;
 768         uint32_t i, idx;
 769         uint16_t iv_length, aad_length;
 770
 771         /* for ESN upper 32 bits of SQN also need to be part of AAD */
 772         aad_length = (app_sa_prm.enable_esn != 0) ? sizeof(uint32_t) : 0;
 773
 774         for (i = 0; i < nb_entries; i++) {
 775                 idx = SPI2IDX(entries[i].spi);
 776                 sa = &sa_ctx->sa[idx];
 777                 if (sa->spi != 0) {
 778                         printf("Index %u already in use by SPI %u\n",
 779                                         idx, sa->spi);
 780                         return -EINVAL;
 781                 }
 782                 *sa = entries[i];
 783                 sa->seq = 0;
 784
 785                 if (sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL ||
 786                         sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
 787                         if (check_eth_dev_caps(sa->portid, inbound))
 788                                 return -EINVAL;
 789                 }
 790
 791                 sa->direction = (inbound == 1) ?
 792                                 RTE_SECURITY_IPSEC_SA_DIR_INGRESS :
 793                                 RTE_SECURITY_IPSEC_SA_DIR_EGRESS;
 794
 795                 switch (sa->flags) {
 796                 case IP4_TUNNEL:
 797                         sa->src.ip.ip4 = rte_cpu_to_be_32(sa->src.ip.ip4);
 798                         sa->dst.ip.ip4 = rte_cpu_to_be_32(sa->dst.ip.ip4);
 799                 }
 800
 801                 if (sa->aead_algo == RTE_CRYPTO_AEAD_AES_GCM) {
 802                         iv_length = 16;
 803
 804                         sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AEAD;
 805                         sa_ctx->xf[idx].a.aead.algo = sa->aead_algo;
 806                         sa_ctx->xf[idx].a.aead.key.data = sa->cipher_key;
 807                         sa_ctx->xf[idx].a.aead.key.length =
 808                                 sa->cipher_key_len;
 809                         sa_ctx->xf[idx].a.aead.op = (inbound == 1) ?
 810                                 RTE_CRYPTO_AEAD_OP_DECRYPT :
 811                                 RTE_CRYPTO_AEAD_OP_ENCRYPT;
 812                         sa_ctx->xf[idx].a.next = NULL;
 813                         sa_ctx->xf[idx].a.aead.iv.offset = IV_OFFSET;
 814                         sa_ctx->xf[idx].a.aead.iv.length = iv_length;
 815                         sa_ctx->xf[idx].a.aead.aad_length =
 816                                 sa->aad_len + aad_length;
 817                         sa_ctx->xf[idx].a.aead.digest_length =
 818                                 sa->digest_len;
 819
 820                         sa->xforms = &sa_ctx->xf[idx].a;
 821
 822                         print_one_sa_rule(sa, inbound);
 823                 } else {
 824                         switch (sa->cipher_algo) {
 825                         case RTE_CRYPTO_CIPHER_NULL:
 826                         case RTE_CRYPTO_CIPHER_3DES_CBC:
 827                         case RTE_CRYPTO_CIPHER_AES_CBC:
 828                                 iv_length = sa->iv_len;
 829                                 break;
 830                         case RTE_CRYPTO_CIPHER_AES_CTR:
 831                                 iv_length = 16;
 832                                 break;
 833                         default:
 834                                 RTE_LOG(ERR, IPSEC_ESP,
 835                                                 "unsupported cipher algorithm %u\n",
 836                                                 sa->cipher_algo);
 837                                 return -EINVAL;
 838                         }
 839
 840                         if (inbound) {
 841                                 sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
 842                                 sa_ctx->xf[idx].b.cipher.algo = sa->cipher_algo;
 843                                 sa_ctx->xf[idx].b.cipher.key.data = sa->cipher_key;
 844                                 sa_ctx->xf[idx].b.cipher.key.length =
 845                                         sa->cipher_key_len;
 846                                 sa_ctx->xf[idx].b.cipher.op =
 847                                         RTE_CRYPTO_CIPHER_OP_DECRYPT;
 848                                 sa_ctx->xf[idx].b.next = NULL;
 849                                 sa_ctx->xf[idx].b.cipher.iv.offset = IV_OFFSET;
 850                                 sa_ctx->xf[idx].b.cipher.iv.length = iv_length;
 851
 852                                 sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AUTH;
 853                                 sa_ctx->xf[idx].a.auth.algo = sa->auth_algo;
 854                                 sa_ctx->xf[idx].a.auth.key.data = sa->auth_key;
 855                                 sa_ctx->xf[idx].a.auth.key.length =
 856                                         sa->auth_key_len;
 857                                 sa_ctx->xf[idx].a.auth.digest_length =
 858                                         sa->digest_len;
 859                                 sa_ctx->xf[idx].a.auth.op =
 860                                         RTE_CRYPTO_AUTH_OP_VERIFY;
 861                         } else { /* outbound */
 862                                 sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
 863                                 sa_ctx->xf[idx].a.cipher.algo = sa->cipher_algo;
 864                                 sa_ctx->xf[idx].a.cipher.key.data = sa->cipher_key;
 865                                 sa_ctx->xf[idx].a.cipher.key.length =
 866                                         sa->cipher_key_len;
 867                                 sa_ctx->xf[idx].a.cipher.op =
 868                                         RTE_CRYPTO_CIPHER_OP_ENCRYPT;
 869                                 sa_ctx->xf[idx].a.next = NULL;
 870                                 sa_ctx->xf[idx].a.cipher.iv.offset = IV_OFFSET;
 871                                 sa_ctx->xf[idx].a.cipher.iv.length = iv_length;
 872
 873                                 sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_AUTH;
 874                                 sa_ctx->xf[idx].b.auth.algo = sa->auth_algo;
 875                                 sa_ctx->xf[idx].b.auth.key.data = sa->auth_key;
 876                                 sa_ctx->xf[idx].b.auth.key.length =
 877                                         sa->auth_key_len;
 878                                 sa_ctx->xf[idx].b.auth.digest_length =
 879                                         sa->digest_len;
 880                                 sa_ctx->xf[idx].b.auth.op =
 881                                         RTE_CRYPTO_AUTH_OP_GENERATE;
 882                         }
 883
 884                         sa_ctx->xf[idx].a.next = &sa_ctx->xf[idx].b;
 885                         sa_ctx->xf[idx].b.next = NULL;
 886                         sa->xforms = &sa_ctx->xf[idx].a;
 887
 888                         print_one_sa_rule(sa, inbound);
 889                 }
 890         }
 891
 892         return 0;
 893 }
 894
 895 static inline int
 896 sa_out_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
 897                 uint32_t nb_entries)
 898 {
 899         return sa_add_rules(sa_ctx, entries, nb_entries, 0);
 900 }
 901
 902 static inline int
 903 sa_in_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
 904                 uint32_t nb_entries)
 905 {
 906         return sa_add_rules(sa_ctx, entries, nb_entries, 1);
 907 }
 908
 909 /*
 910  * helper function, fills parameters that are identical for all SAs
 911  */
 912 static void
 913 fill_ipsec_app_sa_prm(struct rte_ipsec_sa_prm *prm,
 914         const struct app_sa_prm *app_prm)
 915 {
 916         memset(prm, 0, sizeof(*prm));
 917
 918         prm->flags = app_prm->flags;
 919         prm->ipsec_xform.options.esn = app_prm->enable_esn;
 920         prm->replay_win_sz = app_prm->window_size;
 921 }
 922
 923 /*
 924  * Helper function, tries to determine next_proto for SPI
 925  * by searching though SP rules.
 926  */
 927 static int
 928 get_spi_proto(uint32_t spi, enum rte_security_ipsec_sa_direction dir)
 929 {
 930         int32_t rc4, rc6;
 931
 932         rc4 = sp4_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 933         rc6 = sp6_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 934
 935         if (rc4 >= 0) {
 936                 if (rc6 >= 0) {
 937                         RTE_LOG(ERR, IPSEC,
 938                                 "%s: SPI %u used simultaeously by "
 939                                 "IPv4(%d) and IPv6 (%d) SP rules\n",
 940                                 __func__, spi, rc4, rc6);
 941                         return -EINVAL;
 942                 } else
 943                         return IPPROTO_IPIP;
 944         } else if (rc6 < 0) {
 945                 RTE_LOG(ERR, IPSEC,
 946                         "%s: SPI %u is not used by any SP rule\n",
 947                         __func__, spi);
 948                 return -EINVAL;
 949         } else
 950                 return IPPROTO_IPV6;
 951 }
 952
 953 static int
 954 fill_ipsec_sa_prm(struct rte_ipsec_sa_prm *prm, const struct ipsec_sa *ss,
 955         const struct ipv4_hdr *v4, struct ipv6_hdr *v6)
 956 {
 957         int32_t rc;
 958
 959         /*
 960          * Try to get SPI next proto by searching that SPI in SPD.
 961          * probably not the optimal way, but there seems nothing
 962          * better right now.
 963          */
 964         rc = get_spi_proto(ss->spi, ss->direction);
 965         if (rc < 0)
 966                 return rc;
 967
 968         fill_ipsec_app_sa_prm(prm, &app_sa_prm);
 969         prm->userdata = (uintptr_t)ss;
 970
 971         /* setup ipsec xform */
 972         prm->ipsec_xform.spi = ss->spi;
 973         prm->ipsec_xform.salt = ss->salt;
 974         prm->ipsec_xform.direction = ss->direction;
 975         prm->ipsec_xform.proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP;
 976         prm->ipsec_xform.mode = (ss->flags == TRANSPORT) ?
 977                 RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT :
 978                 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL;
 979
 980         if (ss->flags == IP4_TUNNEL) {
 981                 prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV4;
 982                 prm->tun.hdr_len = sizeof(*v4);
 983                 prm->tun.next_proto = rc;
 984                 prm->tun.hdr = v4;
 985         } else if (ss->flags == IP6_TUNNEL) {
 986                 prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV6;
 987                 prm->tun.hdr_len = sizeof(*v6);
 988                 prm->tun.next_proto = rc;
 989                 prm->tun.hdr = v6;
 990         } else {
 991                 /* transport mode */
 992                 prm->trs.proto = rc;
 993         }
 994
 995         /* setup crypto section */
 996         prm->crypto_xform = ss->xforms;
 997         return 0;
 998 }
 999
1000 static void
1001 fill_ipsec_session(struct rte_ipsec_session *ss, struct rte_ipsec_sa *sa,
1002         const struct ipsec_sa *lsa)
1003 {
1004         ss->sa = sa;
1005         ss->type = lsa->type;
1006
1007         /* setup crypto section */
1008         if (ss->type == RTE_SECURITY_ACTION_TYPE_NONE) {
1009                 ss->crypto.ses = lsa->crypto_session;
1010         /* setup session action type */
1011         } else {
1012                 ss->security.ses = lsa->sec_session;
1013                 ss->security.ctx = lsa->security_ctx;
1014                 ss->security.ol_flags = lsa->ol_flags;
1015         }
1016 }
1017
1018 /*
1019  * Initialise related rte_ipsec_sa object.
1020  */
1021 static int
1022 ipsec_sa_init(struct ipsec_sa *lsa, struct rte_ipsec_sa *sa, uint32_t sa_size)
1023 {
1024         int rc;
1025         struct rte_ipsec_sa_prm prm;
1026         struct ipv4_hdr v4  = {
1027                 .version_ihl = IPVERSION << 4 |
1028                         sizeof(v4) / IPV4_IHL_MULTIPLIER,
1029                 .time_to_live = IPDEFTTL,
1030                 .next_proto_id = IPPROTO_ESP,
1031                 .src_addr = lsa->src.ip.ip4,
1032                 .dst_addr = lsa->dst.ip.ip4,
1033         };
1034         struct ipv6_hdr v6 = {
1035                 .vtc_flow = htonl(IP6_VERSION << 28),
1036                 .proto = IPPROTO_ESP,
1037         };
1038
1039         if (lsa->flags == IP6_TUNNEL) {
1040                 memcpy(v6.src_addr, lsa->src.ip.ip6.ip6_b, sizeof(v6.src_addr));
1041                 memcpy(v6.dst_addr, lsa->dst.ip.ip6.ip6_b, sizeof(v6.dst_addr));
1042         }
1043
1044         rc = fill_ipsec_sa_prm(&prm, lsa, &v4, &v6);
1045         if (rc == 0)
1046                 rc = rte_ipsec_sa_init(sa, &prm, sa_size);
1047         if (rc < 0)
1048                 return rc;
1049
1050         fill_ipsec_session(&lsa->ips, sa, lsa);
1051         return 0;
1052 }
1053
1054 /*
1055  * Allocate space and init rte_ipsec_sa strcutures,
1056  * one per session.
1057  */
1058 static int
1059 ipsec_satbl_init(struct sa_ctx *ctx, const struct ipsec_sa *ent,
1060         uint32_t nb_ent, int32_t socket)
1061 {
1062         int32_t rc, sz;
1063         uint32_t i, idx;
1064         size_t tsz;
1065         struct rte_ipsec_sa *sa;
1066         struct ipsec_sa *lsa;
1067         struct rte_ipsec_sa_prm prm;
1068
1069         /* determine SA size */
1070         idx = SPI2IDX(ent[0].spi);
1071         fill_ipsec_sa_prm(&prm, ctx->sa + idx, NULL, NULL);
1072         sz = rte_ipsec_sa_size(&prm);
1073         if (sz < 0) {
1074                 RTE_LOG(ERR, IPSEC, "%s(%p, %u, %d): "
1075                         "failed to determine SA size, error code: %d\n",
1076                         __func__, ctx, nb_ent, socket, sz);
1077                 return sz;
1078         }
1079
1080         tsz = sz * nb_ent;
1081
1082         ctx->satbl = rte_zmalloc_socket(NULL, tsz, RTE_CACHE_LINE_SIZE, socket);
1083         if (ctx->satbl == NULL) {
1084                 RTE_LOG(ERR, IPSEC,
1085                         "%s(%p, %u, %d): failed to allocate %zu bytes\n",
1086                         __func__,  ctx, nb_ent, socket, tsz);
1087                 return -ENOMEM;
1088         }
1089
1090         rc = 0;
1091         for (i = 0; i != nb_ent && rc == 0; i++) {
1092
1093                 idx = SPI2IDX(ent[i].spi);
1094
1095                 sa = (struct rte_ipsec_sa *)((uintptr_t)ctx->satbl + sz * i);
1096                 lsa = ctx->sa + idx;
1097
1098                 rc = ipsec_sa_init(lsa, sa, sz);
1099         }
1100
1101         return rc;
1102 }
1103
1104 void
1105 sa_init(struct socket_ctx *ctx, int32_t socket_id)
1106 {
1107         int32_t rc;
1108         const char *name;
1109
1110         if (ctx == NULL)
1111                 rte_exit(EXIT_FAILURE, "NULL context.\n");
1112
1113         if (ctx->sa_in != NULL)
1114                 rte_exit(EXIT_FAILURE, "Inbound SA DB for socket %u already "
1115                                 "initialized\n", socket_id);
1116
1117         if (ctx->sa_out != NULL)
1118                 rte_exit(EXIT_FAILURE, "Outbound SA DB for socket %u already "
1119                                 "initialized\n", socket_id);
1120
1121         if (nb_sa_in > 0) {
1122                 name = "sa_in";
1123                 ctx->sa_in = sa_create(name, socket_id);
1124                 if (ctx->sa_in == NULL)
1125                         rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
1126                                 "context %s in socket %d\n", rte_errno,
1127                                 name, socket_id);
1128
1129                 sa_in_add_rules(ctx->sa_in, sa_in, nb_sa_in);
1130
1131                 if (app_sa_prm.enable != 0) {
1132                         rc = ipsec_satbl_init(ctx->sa_in, sa_in, nb_sa_in,
1133                                 socket_id);
1134                         if (rc != 0)
1135                                 rte_exit(EXIT_FAILURE,
1136                                         "failed to init inbound SAs\n");
1137                 }
1138         } else
1139                 RTE_LOG(WARNING, IPSEC, "No SA Inbound rule specified\n");
1140
1141         if (nb_sa_out > 0) {
1142                 name = "sa_out";
1143                 ctx->sa_out = sa_create(name, socket_id);
1144                 if (ctx->sa_out == NULL)
1145                         rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
1146                                 "context %s in socket %d\n", rte_errno,
1147                                 name, socket_id);
1148
1149                 sa_out_add_rules(ctx->sa_out, sa_out, nb_sa_out);
1150
1151                 if (app_sa_prm.enable != 0) {
1152                         rc = ipsec_satbl_init(ctx->sa_out, sa_out, nb_sa_out,
1153                                 socket_id);
1154                         if (rc != 0)
1155                                 rte_exit(EXIT_FAILURE,
1156                                         "failed to init outbound SAs\n");
1157                 }
1158         } else
1159                 RTE_LOG(WARNING, IPSEC, "No SA Outbound rule "
1160                         "specified\n");
1161 }
1162
1163 int
1164 inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx)
1165 {
1166         struct ipsec_mbuf_metadata *priv;
1167         struct ipsec_sa *sa;
1168
1169         priv = get_priv(m);
1170         sa = priv->sa;
1171         if (sa != NULL)
1172                 return (sa_ctx->sa[sa_idx].spi == sa->spi);
1173
1174         RTE_LOG(ERR, IPSEC, "SA not saved in private data\n");
1175         return 0;
1176 }
1177
1178 static inline void
1179 single_inbound_lookup(struct ipsec_sa *sadb, struct rte_mbuf *pkt,
1180                 struct ipsec_sa **sa_ret)
1181 {
1182         struct esp_hdr *esp;
1183         struct ip *ip;
1184         uint32_t *src4_addr;
1185         uint8_t *src6_addr;
1186         struct ipsec_sa *sa;
1187
1188         *sa_ret = NULL;
1189
1190         ip = rte_pktmbuf_mtod(pkt, struct ip *);
1191         if (ip->ip_v == IPVERSION)
1192                 esp = (struct esp_hdr *)(ip + 1);
1193         else
1194                 esp = (struct esp_hdr *)(((struct ip6_hdr *)ip) + 1);
1195
1196         if (esp->spi == INVALID_SPI)
1197                 return;
1198
1199         sa = &sadb[SPI2IDX(rte_be_to_cpu_32(esp->spi))];
1200         if (rte_be_to_cpu_32(esp->spi) != sa->spi)
1201                 return;
1202
1203         switch (sa->flags) {
1204         case IP4_TUNNEL:
1205                 src4_addr = RTE_PTR_ADD(ip, offsetof(struct ip, ip_src));
1206                 if ((ip->ip_v == IPVERSION) &&
1207                                 (sa->src.ip.ip4 == *src4_addr) &&
1208                                 (sa->dst.ip.ip4 == *(src4_addr + 1)))
1209                         *sa_ret = sa;
1210                 break;
1211         case IP6_TUNNEL:
1212                 src6_addr = RTE_PTR_ADD(ip, offsetof(struct ip6_hdr, ip6_src));
1213                 if ((ip->ip_v == IP6_VERSION) &&
1214                                 !memcmp(&sa->src.ip.ip6.ip6, src6_addr, 16) &&
1215                                 !memcmp(&sa->dst.ip.ip6.ip6, src6_addr + 16, 16))
1216                         *sa_ret = sa;
1217                 break;
1218         case TRANSPORT:
1219                 *sa_ret = sa;
1220         }
1221 }
1222
1223 void
1224 inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
1225                 struct ipsec_sa *sa[], uint16_t nb_pkts)
1226 {
1227         uint32_t i;
1228
1229         for (i = 0; i < nb_pkts; i++)
1230                 single_inbound_lookup(sa_ctx->sa, pkts[i], &sa[i]);
1231 }
1232
1233 void
1234 outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
1235                 struct ipsec_sa *sa[], uint16_t nb_pkts)
1236 {
1237         uint32_t i;
1238
1239         for (i = 0; i < nb_pkts; i++)
1240                 sa[i] = &sa_ctx->sa[sa_idx[i]];
1241 }
1242
1243 /*
1244  * Select HW offloads to be used.
1245  */
1246 int
1247 sa_check_offloads(uint16_t port_id, uint64_t *rx_offloads,
1248                 uint64_t *tx_offloads)
1249 {
1250         struct ipsec_sa *rule;
1251         uint32_t idx_sa;
1252
1253         *rx_offloads = 0;
1254         *tx_offloads = 0;
1255
1256         /* Check for inbound rules that use offloads and use this port */
1257         for (idx_sa = 0; idx_sa < nb_sa_in; idx_sa++) {
1258                 rule = &sa_in[idx_sa];
1259                 if ((rule->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO ||
1260                                 rule->type ==
1261                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
1262                                 && rule->portid == port_id)
1263                         *rx_offloads |= DEV_RX_OFFLOAD_SECURITY;
1264         }
1265
1266         /* Check for outbound rules that use offloads and use this port */
1267         for (idx_sa = 0; idx_sa < nb_sa_out; idx_sa++) {
1268                 rule = &sa_out[idx_sa];
1269                 if ((rule->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO ||
1270                                 rule->type ==
1271                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
1272                                 && rule->portid == port_id)
1273                         *tx_offloads |= DEV_TX_OFFLOAD_SECURITY;
1274         }
1275         return 0;
1276 }