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 = 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(" type:");
 695         switch (sa->type) {
 696         case RTE_SECURITY_ACTION_TYPE_NONE:
 697                 printf("no-offload ");
 698                 break;
 699         case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
 700                 printf("inline-crypto-offload ");
 701                 break;
 702         case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 703                 printf("inline-protocol-offload ");
 704                 break;
 705         case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 706                 printf("lookaside-protocol-offload ");
 707                 break;
 708         }
 709         printf("\n");
 710 }
 711
 712 struct sa_ctx {
 713         void *satbl; /* pointer to array of rte_ipsec_sa objects*/
 714         struct ipsec_sa sa[IPSEC_SA_MAX_ENTRIES];
 715         union {
 716                 struct {
 717                         struct rte_crypto_sym_xform a;
 718                         struct rte_crypto_sym_xform b;
 719                 };
 720         } xf[IPSEC_SA_MAX_ENTRIES];
 721 };
 722
 723 static struct sa_ctx *
 724 sa_create(const char *name, int32_t socket_id)
 725 {
 726         char s[PATH_MAX];
 727         struct sa_ctx *sa_ctx;
 728         uint32_t mz_size;
 729         const struct rte_memzone *mz;
 730
 731         snprintf(s, sizeof(s), "%s_%u", name, socket_id);
 732
 733         /* Create SA array table */
 734         printf("Creating SA context with %u maximum entries on socket %d\n",
 735                         IPSEC_SA_MAX_ENTRIES, socket_id);
 736
 737         mz_size = sizeof(struct sa_ctx);
 738         mz = rte_memzone_reserve(s, mz_size, socket_id,
 739                         RTE_MEMZONE_1GB | RTE_MEMZONE_SIZE_HINT_ONLY);
 740         if (mz == NULL) {
 741                 printf("Failed to allocate SA DB memory\n");
 742                 rte_errno = -ENOMEM;
 743                 return NULL;
 744         }
 745
 746         sa_ctx = (struct sa_ctx *)mz->addr;
 747
 748         return sa_ctx;
 749 }
 750
 751 static int
 752 check_eth_dev_caps(uint16_t portid, uint32_t inbound)
 753 {
 754         struct rte_eth_dev_info dev_info;
 755
 756         rte_eth_dev_info_get(portid, &dev_info);
 757
 758         if (inbound) {
 759                 if ((dev_info.rx_offload_capa &
 760                                 DEV_RX_OFFLOAD_SECURITY) == 0) {
 761                         RTE_LOG(WARNING, PORT,
 762                                 "hardware RX IPSec offload is not supported\n");
 763                         return -EINVAL;
 764                 }
 765
 766         } else { /* outbound */
 767                 if ((dev_info.tx_offload_capa &
 768                                 DEV_TX_OFFLOAD_SECURITY) == 0) {
 769                         RTE_LOG(WARNING, PORT,
 770                                 "hardware TX IPSec offload is not supported\n");
 771                         return -EINVAL;
 772                 }
 773         }
 774         return 0;
 775 }
 776
 777
 778 static int
 779 sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
 780                 uint32_t nb_entries, uint32_t inbound)
 781 {
 782         struct ipsec_sa *sa;
 783         uint32_t i, idx;
 784         uint16_t iv_length, aad_length;
 785
 786         /* for ESN upper 32 bits of SQN also need to be part of AAD */
 787         aad_length = (app_sa_prm.enable_esn != 0) ? sizeof(uint32_t) : 0;
 788
 789         for (i = 0; i < nb_entries; i++) {
 790                 idx = SPI2IDX(entries[i].spi);
 791                 sa = &sa_ctx->sa[idx];
 792                 if (sa->spi != 0) {
 793                         printf("Index %u already in use by SPI %u\n",
 794                                         idx, sa->spi);
 795                         return -EINVAL;
 796                 }
 797                 *sa = entries[i];
 798                 sa->seq = 0;
 799
 800                 if (sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL ||
 801                         sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
 802                         if (check_eth_dev_caps(sa->portid, inbound))
 803                                 return -EINVAL;
 804                 }
 805
 806                 sa->direction = (inbound == 1) ?
 807                                 RTE_SECURITY_IPSEC_SA_DIR_INGRESS :
 808                                 RTE_SECURITY_IPSEC_SA_DIR_EGRESS;
 809
 810                 switch (sa->flags) {
 811                 case IP4_TUNNEL:
 812                         sa->src.ip.ip4 = rte_cpu_to_be_32(sa->src.ip.ip4);
 813                         sa->dst.ip.ip4 = rte_cpu_to_be_32(sa->dst.ip.ip4);
 814                 }
 815
 816                 if (sa->aead_algo == RTE_CRYPTO_AEAD_AES_GCM) {
 817                         iv_length = 16;
 818
 819                         sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AEAD;
 820                         sa_ctx->xf[idx].a.aead.algo = sa->aead_algo;
 821                         sa_ctx->xf[idx].a.aead.key.data = sa->cipher_key;
 822                         sa_ctx->xf[idx].a.aead.key.length =
 823                                 sa->cipher_key_len;
 824                         sa_ctx->xf[idx].a.aead.op = (inbound == 1) ?
 825                                 RTE_CRYPTO_AEAD_OP_DECRYPT :
 826                                 RTE_CRYPTO_AEAD_OP_ENCRYPT;
 827                         sa_ctx->xf[idx].a.next = NULL;
 828                         sa_ctx->xf[idx].a.aead.iv.offset = IV_OFFSET;
 829                         sa_ctx->xf[idx].a.aead.iv.length = iv_length;
 830                         sa_ctx->xf[idx].a.aead.aad_length =
 831                                 sa->aad_len + aad_length;
 832                         sa_ctx->xf[idx].a.aead.digest_length =
 833                                 sa->digest_len;
 834
 835                         sa->xforms = &sa_ctx->xf[idx].a;
 836
 837                         print_one_sa_rule(sa, inbound);
 838                 } else {
 839                         switch (sa->cipher_algo) {
 840                         case RTE_CRYPTO_CIPHER_NULL:
 841                         case RTE_CRYPTO_CIPHER_3DES_CBC:
 842                         case RTE_CRYPTO_CIPHER_AES_CBC:
 843                                 iv_length = sa->iv_len;
 844                                 break;
 845                         case RTE_CRYPTO_CIPHER_AES_CTR:
 846                                 iv_length = 16;
 847                                 break;
 848                         default:
 849                                 RTE_LOG(ERR, IPSEC_ESP,
 850                                                 "unsupported cipher algorithm %u\n",
 851                                                 sa->cipher_algo);
 852                                 return -EINVAL;
 853                         }
 854
 855                         if (inbound) {
 856                                 sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
 857                                 sa_ctx->xf[idx].b.cipher.algo = sa->cipher_algo;
 858                                 sa_ctx->xf[idx].b.cipher.key.data = sa->cipher_key;
 859                                 sa_ctx->xf[idx].b.cipher.key.length =
 860                                         sa->cipher_key_len;
 861                                 sa_ctx->xf[idx].b.cipher.op =
 862                                         RTE_CRYPTO_CIPHER_OP_DECRYPT;
 863                                 sa_ctx->xf[idx].b.next = NULL;
 864                                 sa_ctx->xf[idx].b.cipher.iv.offset = IV_OFFSET;
 865                                 sa_ctx->xf[idx].b.cipher.iv.length = iv_length;
 866
 867                                 sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AUTH;
 868                                 sa_ctx->xf[idx].a.auth.algo = sa->auth_algo;
 869                                 sa_ctx->xf[idx].a.auth.key.data = sa->auth_key;
 870                                 sa_ctx->xf[idx].a.auth.key.length =
 871                                         sa->auth_key_len;
 872                                 sa_ctx->xf[idx].a.auth.digest_length =
 873                                         sa->digest_len;
 874                                 sa_ctx->xf[idx].a.auth.op =
 875                                         RTE_CRYPTO_AUTH_OP_VERIFY;
 876                         } else { /* outbound */
 877                                 sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
 878                                 sa_ctx->xf[idx].a.cipher.algo = sa->cipher_algo;
 879                                 sa_ctx->xf[idx].a.cipher.key.data = sa->cipher_key;
 880                                 sa_ctx->xf[idx].a.cipher.key.length =
 881                                         sa->cipher_key_len;
 882                                 sa_ctx->xf[idx].a.cipher.op =
 883                                         RTE_CRYPTO_CIPHER_OP_ENCRYPT;
 884                                 sa_ctx->xf[idx].a.next = NULL;
 885                                 sa_ctx->xf[idx].a.cipher.iv.offset = IV_OFFSET;
 886                                 sa_ctx->xf[idx].a.cipher.iv.length = iv_length;
 887
 888                                 sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_AUTH;
 889                                 sa_ctx->xf[idx].b.auth.algo = sa->auth_algo;
 890                                 sa_ctx->xf[idx].b.auth.key.data = sa->auth_key;
 891                                 sa_ctx->xf[idx].b.auth.key.length =
 892                                         sa->auth_key_len;
 893                                 sa_ctx->xf[idx].b.auth.digest_length =
 894                                         sa->digest_len;
 895                                 sa_ctx->xf[idx].b.auth.op =
 896                                         RTE_CRYPTO_AUTH_OP_GENERATE;
 897                         }
 898
 899                         sa_ctx->xf[idx].a.next = &sa_ctx->xf[idx].b;
 900                         sa_ctx->xf[idx].b.next = NULL;
 901                         sa->xforms = &sa_ctx->xf[idx].a;
 902
 903                         print_one_sa_rule(sa, inbound);
 904                 }
 905         }
 906
 907         return 0;
 908 }
 909
 910 static inline int
 911 sa_out_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
 912                 uint32_t nb_entries)
 913 {
 914         return sa_add_rules(sa_ctx, entries, nb_entries, 0);
 915 }
 916
 917 static inline int
 918 sa_in_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
 919                 uint32_t nb_entries)
 920 {
 921         return sa_add_rules(sa_ctx, entries, nb_entries, 1);
 922 }
 923
 924 /*
 925  * helper function, fills parameters that are identical for all SAs
 926  */
 927 static void
 928 fill_ipsec_app_sa_prm(struct rte_ipsec_sa_prm *prm,
 929         const struct app_sa_prm *app_prm)
 930 {
 931         memset(prm, 0, sizeof(*prm));
 932
 933         prm->flags = app_prm->flags;
 934         prm->ipsec_xform.options.esn = app_prm->enable_esn;
 935         prm->replay_win_sz = app_prm->window_size;
 936 }
 937
 938 /*
 939  * Helper function, tries to determine next_proto for SPI
 940  * by searching though SP rules.
 941  */
 942 static int
 943 get_spi_proto(uint32_t spi, enum rte_security_ipsec_sa_direction dir)
 944 {
 945         int32_t rc4, rc6;
 946
 947         rc4 = sp4_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 948         rc6 = sp6_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS);
 949
 950         if (rc4 >= 0) {
 951                 if (rc6 >= 0) {
 952                         RTE_LOG(ERR, IPSEC,
 953                                 "%s: SPI %u used simultaeously by "
 954                                 "IPv4(%d) and IPv6 (%d) SP rules\n",
 955                                 __func__, spi, rc4, rc6);
 956                         return -EINVAL;
 957                 } else
 958                         return IPPROTO_IPIP;
 959         } else if (rc6 < 0) {
 960                 RTE_LOG(ERR, IPSEC,
 961                         "%s: SPI %u is not used by any SP rule\n",
 962                         __func__, spi);
 963                 return -EINVAL;
 964         } else
 965                 return IPPROTO_IPV6;
 966 }
 967
 968 static int
 969 fill_ipsec_sa_prm(struct rte_ipsec_sa_prm *prm, const struct ipsec_sa *ss,
 970         const struct ipv4_hdr *v4, struct ipv6_hdr *v6)
 971 {
 972         int32_t rc;
 973
 974         /*
 975          * Try to get SPI next proto by searching that SPI in SPD.
 976          * probably not the optimal way, but there seems nothing
 977          * better right now.
 978          */
 979         rc = get_spi_proto(ss->spi, ss->direction);
 980         if (rc < 0)
 981                 return rc;
 982
 983         fill_ipsec_app_sa_prm(prm, &app_sa_prm);
 984         prm->userdata = (uintptr_t)ss;
 985
 986         /* setup ipsec xform */
 987         prm->ipsec_xform.spi = ss->spi;
 988         prm->ipsec_xform.salt = ss->salt;
 989         prm->ipsec_xform.direction = ss->direction;
 990         prm->ipsec_xform.proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP;
 991         prm->ipsec_xform.mode = (ss->flags == TRANSPORT) ?
 992                 RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT :
 993                 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL;
 994
 995         if (ss->flags == IP4_TUNNEL) {
 996                 prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV4;
 997                 prm->tun.hdr_len = sizeof(*v4);
 998                 prm->tun.next_proto = rc;
 999                 prm->tun.hdr = v4;
1000         } else if (ss->flags == IP6_TUNNEL) {
1001                 prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV6;
1002                 prm->tun.hdr_len = sizeof(*v6);
1003                 prm->tun.next_proto = rc;
1004                 prm->tun.hdr = v6;
1005         } else {
1006                 /* transport mode */
1007                 prm->trs.proto = rc;
1008         }
1009
1010         /* setup crypto section */
1011         prm->crypto_xform = ss->xforms;
1012         return 0;
1013 }
1014
1015 static void
1016 fill_ipsec_session(struct rte_ipsec_session *ss, struct rte_ipsec_sa *sa,
1017         const struct ipsec_sa *lsa)
1018 {
1019         ss->sa = sa;
1020         ss->type = lsa->type;
1021
1022         /* setup crypto section */
1023         if (ss->type == RTE_SECURITY_ACTION_TYPE_NONE) {
1024                 ss->crypto.ses = lsa->crypto_session;
1025         /* setup session action type */
1026         } else {
1027                 ss->security.ses = lsa->sec_session;
1028                 ss->security.ctx = lsa->security_ctx;
1029                 ss->security.ol_flags = lsa->ol_flags;
1030         }
1031 }
1032
1033 /*
1034  * Initialise related rte_ipsec_sa object.
1035  */
1036 static int
1037 ipsec_sa_init(struct ipsec_sa *lsa, struct rte_ipsec_sa *sa, uint32_t sa_size)
1038 {
1039         int rc;
1040         struct rte_ipsec_sa_prm prm;
1041         struct ipv4_hdr v4  = {
1042                 .version_ihl = IPVERSION << 4 |
1043                         sizeof(v4) / IPV4_IHL_MULTIPLIER,
1044                 .time_to_live = IPDEFTTL,
1045                 .next_proto_id = IPPROTO_ESP,
1046                 .src_addr = lsa->src.ip.ip4,
1047                 .dst_addr = lsa->dst.ip.ip4,
1048         };
1049         struct ipv6_hdr v6 = {
1050                 .vtc_flow = htonl(IP6_VERSION << 28),
1051                 .proto = IPPROTO_ESP,
1052         };
1053
1054         if (lsa->flags == IP6_TUNNEL) {
1055                 memcpy(v6.src_addr, lsa->src.ip.ip6.ip6_b, sizeof(v6.src_addr));
1056                 memcpy(v6.dst_addr, lsa->dst.ip.ip6.ip6_b, sizeof(v6.dst_addr));
1057         }
1058
1059         rc = fill_ipsec_sa_prm(&prm, lsa, &v4, &v6);
1060         if (rc == 0)
1061                 rc = rte_ipsec_sa_init(sa, &prm, sa_size);
1062         if (rc < 0)
1063                 return rc;
1064
1065         fill_ipsec_session(&lsa->ips, sa, lsa);
1066         return 0;
1067 }
1068
1069 /*
1070  * Allocate space and init rte_ipsec_sa strcutures,
1071  * one per session.
1072  */
1073 static int
1074 ipsec_satbl_init(struct sa_ctx *ctx, const struct ipsec_sa *ent,
1075         uint32_t nb_ent, int32_t socket)
1076 {
1077         int32_t rc, sz;
1078         uint32_t i, idx;
1079         size_t tsz;
1080         struct rte_ipsec_sa *sa;
1081         struct ipsec_sa *lsa;
1082         struct rte_ipsec_sa_prm prm;
1083
1084         /* determine SA size */
1085         idx = SPI2IDX(ent[0].spi);
1086         fill_ipsec_sa_prm(&prm, ctx->sa + idx, NULL, NULL);
1087         sz = rte_ipsec_sa_size(&prm);
1088         if (sz < 0) {
1089                 RTE_LOG(ERR, IPSEC, "%s(%p, %u, %d): "
1090                         "failed to determine SA size, error code: %d\n",
1091                         __func__, ctx, nb_ent, socket, sz);
1092                 return sz;
1093         }
1094
1095         tsz = sz * nb_ent;
1096
1097         ctx->satbl = rte_zmalloc_socket(NULL, tsz, RTE_CACHE_LINE_SIZE, socket);
1098         if (ctx->satbl == NULL) {
1099                 RTE_LOG(ERR, IPSEC,
1100                         "%s(%p, %u, %d): failed to allocate %zu bytes\n",
1101                         __func__,  ctx, nb_ent, socket, tsz);
1102                 return -ENOMEM;
1103         }
1104
1105         rc = 0;
1106         for (i = 0; i != nb_ent && rc == 0; i++) {
1107
1108                 idx = SPI2IDX(ent[i].spi);
1109
1110                 sa = (struct rte_ipsec_sa *)((uintptr_t)ctx->satbl + sz * i);
1111                 lsa = ctx->sa + idx;
1112
1113                 rc = ipsec_sa_init(lsa, sa, sz);
1114         }
1115
1116         return rc;
1117 }
1118
1119 void
1120 sa_init(struct socket_ctx *ctx, int32_t socket_id)
1121 {
1122         int32_t rc;
1123         const char *name;
1124
1125         if (ctx == NULL)
1126                 rte_exit(EXIT_FAILURE, "NULL context.\n");
1127
1128         if (ctx->sa_in != NULL)
1129                 rte_exit(EXIT_FAILURE, "Inbound SA DB for socket %u already "
1130                                 "initialized\n", socket_id);
1131
1132         if (ctx->sa_out != NULL)
1133                 rte_exit(EXIT_FAILURE, "Outbound SA DB for socket %u already "
1134                                 "initialized\n", socket_id);
1135
1136         if (nb_sa_in > 0) {
1137                 name = "sa_in";
1138                 ctx->sa_in = sa_create(name, socket_id);
1139                 if (ctx->sa_in == NULL)
1140                         rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
1141                                 "context %s in socket %d\n", rte_errno,
1142                                 name, socket_id);
1143
1144                 sa_in_add_rules(ctx->sa_in, sa_in, nb_sa_in);
1145
1146                 if (app_sa_prm.enable != 0) {
1147                         rc = ipsec_satbl_init(ctx->sa_in, sa_in, nb_sa_in,
1148                                 socket_id);
1149                         if (rc != 0)
1150                                 rte_exit(EXIT_FAILURE,
1151                                         "failed to init inbound SAs\n");
1152                 }
1153         } else
1154                 RTE_LOG(WARNING, IPSEC, "No SA Inbound rule specified\n");
1155
1156         if (nb_sa_out > 0) {
1157                 name = "sa_out";
1158                 ctx->sa_out = sa_create(name, socket_id);
1159                 if (ctx->sa_out == NULL)
1160                         rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
1161                                 "context %s in socket %d\n", rte_errno,
1162                                 name, socket_id);
1163
1164                 sa_out_add_rules(ctx->sa_out, sa_out, nb_sa_out);
1165
1166                 if (app_sa_prm.enable != 0) {
1167                         rc = ipsec_satbl_init(ctx->sa_out, sa_out, nb_sa_out,
1168                                 socket_id);
1169                         if (rc != 0)
1170                                 rte_exit(EXIT_FAILURE,
1171                                         "failed to init outbound SAs\n");
1172                 }
1173         } else
1174                 RTE_LOG(WARNING, IPSEC, "No SA Outbound rule "
1175                         "specified\n");
1176 }
1177
1178 int
1179 inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx)
1180 {
1181         struct ipsec_mbuf_metadata *priv;
1182         struct ipsec_sa *sa;
1183
1184         priv = get_priv(m);
1185         sa = priv->sa;
1186         if (sa != NULL)
1187                 return (sa_ctx->sa[sa_idx].spi == sa->spi);
1188
1189         RTE_LOG(ERR, IPSEC, "SA not saved in private data\n");
1190         return 0;
1191 }
1192
1193 static inline void
1194 single_inbound_lookup(struct ipsec_sa *sadb, struct rte_mbuf *pkt,
1195                 struct ipsec_sa **sa_ret)
1196 {
1197         struct esp_hdr *esp;
1198         struct ip *ip;
1199         uint32_t *src4_addr;
1200         uint8_t *src6_addr;
1201         struct ipsec_sa *sa;
1202
1203         *sa_ret = NULL;
1204
1205         ip = rte_pktmbuf_mtod(pkt, struct ip *);
1206         if (ip->ip_v == IPVERSION)
1207                 esp = (struct esp_hdr *)(ip + 1);
1208         else
1209                 esp = (struct esp_hdr *)(((struct ip6_hdr *)ip) + 1);
1210
1211         if (esp->spi == INVALID_SPI)
1212                 return;
1213
1214         sa = &sadb[SPI2IDX(rte_be_to_cpu_32(esp->spi))];
1215         if (rte_be_to_cpu_32(esp->spi) != sa->spi)
1216                 return;
1217
1218         switch (sa->flags) {
1219         case IP4_TUNNEL:
1220                 src4_addr = RTE_PTR_ADD(ip, offsetof(struct ip, ip_src));
1221                 if ((ip->ip_v == IPVERSION) &&
1222                                 (sa->src.ip.ip4 == *src4_addr) &&
1223                                 (sa->dst.ip.ip4 == *(src4_addr + 1)))
1224                         *sa_ret = sa;
1225                 break;
1226         case IP6_TUNNEL:
1227                 src6_addr = RTE_PTR_ADD(ip, offsetof(struct ip6_hdr, ip6_src));
1228                 if ((ip->ip_v == IP6_VERSION) &&
1229                                 !memcmp(&sa->src.ip.ip6.ip6, src6_addr, 16) &&
1230                                 !memcmp(&sa->dst.ip.ip6.ip6, src6_addr + 16, 16))
1231                         *sa_ret = sa;
1232                 break;
1233         case TRANSPORT:
1234                 *sa_ret = sa;
1235         }
1236 }
1237
1238 void
1239 inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
1240                 struct ipsec_sa *sa[], uint16_t nb_pkts)
1241 {
1242         uint32_t i;
1243
1244         for (i = 0; i < nb_pkts; i++)
1245                 single_inbound_lookup(sa_ctx->sa, pkts[i], &sa[i]);
1246 }
1247
1248 void
1249 outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
1250                 struct ipsec_sa *sa[], uint16_t nb_pkts)
1251 {
1252         uint32_t i;
1253
1254         for (i = 0; i < nb_pkts; i++)
1255                 sa[i] = &sa_ctx->sa[sa_idx[i]];
1256 }
1257
1258 /*
1259  * Select HW offloads to be used.
1260  */
1261 int
1262 sa_check_offloads(uint16_t port_id, uint64_t *rx_offloads,
1263                 uint64_t *tx_offloads)
1264 {
1265         struct ipsec_sa *rule;
1266         uint32_t idx_sa;
1267
1268         *rx_offloads = 0;
1269         *tx_offloads = 0;
1270
1271         /* Check for inbound rules that use offloads and use this port */
1272         for (idx_sa = 0; idx_sa < nb_sa_in; idx_sa++) {
1273                 rule = &sa_in[idx_sa];
1274                 if ((rule->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO ||
1275                                 rule->type ==
1276                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
1277                                 && rule->portid == port_id)
1278                         *rx_offloads |= DEV_RX_OFFLOAD_SECURITY;
1279         }
1280
1281         /* Check for outbound rules that use offloads and use this port */
1282         for (idx_sa = 0; idx_sa < nb_sa_out; idx_sa++) {
1283                 rule = &sa_out[idx_sa];
1284                 if ((rule->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO ||
1285                                 rule->type ==
1286                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
1287                                 && rule->portid == port_id)
1288                         *tx_offloads |= DEV_TX_OFFLOAD_SECURITY;
1289         }
1290         return 0;
1291 }