examples/ipsec-secgw/sa.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2020 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 #include "sad.h"
  28
  29 #define IPDEFTTL 64
  30
  31 #define IP4_FULL_MASK (sizeof(((struct ip_addr *)NULL)->ip.ip4) * CHAR_BIT)
  32
  33 #define IP6_FULL_MASK (sizeof(((struct ip_addr *)NULL)->ip.ip6.ip6) * CHAR_BIT)
  34
  35 #define MBUF_NO_SEC_OFFLOAD(m) ((m->ol_flags & PKT_RX_SEC_OFFLOAD) == 0)
  36
  37 struct supported_cipher_algo {
  38         const char *keyword;
  39         enum rte_crypto_cipher_algorithm algo;
  40         uint16_t iv_len;
  41         uint16_t block_size;
  42         uint16_t key_len;
  43 };
  44
  45 struct supported_auth_algo {
  46         const char *keyword;
  47         enum rte_crypto_auth_algorithm algo;
  48         uint16_t digest_len;
  49         uint16_t key_len;
  50         uint8_t key_not_req;
  51 };
  52
  53 struct supported_aead_algo {
  54         const char *keyword;
  55         enum rte_crypto_aead_algorithm algo;
  56         uint16_t iv_len;
  57         uint16_t block_size;
  58         uint16_t digest_len;
  59         uint16_t key_len;
  60         uint8_t aad_len;
  61 };
  62
  63
  64 const struct supported_cipher_algo cipher_algos[] = {
  65         {
  66                 .keyword = "null",
  67                 .algo = RTE_CRYPTO_CIPHER_NULL,
  68                 .iv_len = 0,
  69                 .block_size = 4,
  70                 .key_len = 0
  71         },
  72         {
  73                 .keyword = "aes-128-cbc",
  74                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  75                 .iv_len = 16,
  76                 .block_size = 16,
  77                 .key_len = 16
  78         },
  79         {
  80                 .keyword = "aes-192-cbc",
  81                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  82                 .iv_len = 16,
  83                 .block_size = 16,
  84                 .key_len = 24
  85         },
  86         {
  87                 .keyword = "aes-256-cbc",
  88                 .algo = RTE_CRYPTO_CIPHER_AES_CBC,
  89                 .iv_len = 16,
  90                 .block_size = 16,
  91                 .key_len = 32
  92         },
  93         {
  94                 .keyword = "aes-128-ctr",
  95                 .algo = RTE_CRYPTO_CIPHER_AES_CTR,
  96                 .iv_len = 8,
  97                 .block_size = 4,
  98                 .key_len = 20
  99         },
 100         {
 101                 .keyword = "3des-cbc",
 102                 .algo = RTE_CRYPTO_CIPHER_3DES_CBC,
 103                 .iv_len = 8,
 104                 .block_size = 8,
 105                 .key_len = 24
 106         }
 107 };
 108
 109 const struct supported_auth_algo auth_algos[] = {
 110         {
 111                 .keyword = "null",
 112                 .algo = RTE_CRYPTO_AUTH_NULL,
 113                 .digest_len = 0,
 114                 .key_len = 0,
 115                 .key_not_req = 1
 116         },
 117         {
 118                 .keyword = "sha1-hmac",
 119                 .algo = RTE_CRYPTO_AUTH_SHA1_HMAC,
 120                 .digest_len = 12,
 121                 .key_len = 20
 122         },
 123         {
 124                 .keyword = "sha256-hmac",
 125                 .algo = RTE_CRYPTO_AUTH_SHA256_HMAC,
 126                 .digest_len = 16,
 127                 .key_len = 32
 128         }
 129 };
 130
 131 const struct supported_aead_algo aead_algos[] = {
 132         {
 133                 .keyword = "aes-128-gcm",
 134                 .algo = RTE_CRYPTO_AEAD_AES_GCM,
 135                 .iv_len = 8,
 136                 .block_size = 4,
 137                 .key_len = 20,
 138                 .digest_len = 16,
 139                 .aad_len = 8,
 140         },
 141         {
 142                 .keyword = "aes-192-gcm",
 143                 .algo = RTE_CRYPTO_AEAD_AES_GCM,
 144                 .iv_len = 8,
 145                 .block_size = 4,
 146                 .key_len = 28,
 147                 .digest_len = 16,
 148                 .aad_len = 8,
 149         },
 150         {
 151                 .keyword = "aes-256-gcm",
 152                 .algo = RTE_CRYPTO_AEAD_AES_GCM,
 153                 .iv_len = 8,
 154                 .block_size = 4,
 155                 .key_len = 36,
 156                 .digest_len = 16,
 157                 .aad_len = 8,
 158         }
 159 };
 160
 161 #define SA_INIT_NB      128
 162
 163 static uint32_t nb_crypto_sessions;
 164 struct ipsec_sa *sa_out;
 165 uint32_t nb_sa_out;
 166 static uint32_t sa_out_sz;
 167 static struct ipsec_sa_cnt sa_out_cnt;
 168
 169 struct ipsec_sa *sa_in;
 170 uint32_t nb_sa_in;
 171 static uint32_t sa_in_sz;
 172 static struct ipsec_sa_cnt sa_in_cnt;
 173
 174 static const struct supported_cipher_algo *
 175 find_match_cipher_algo(const char *cipher_keyword)
 176 {
 177         size_t i;
 178
 179         for (i = 0; i < RTE_DIM(cipher_algos); i++) {
 180                 const struct supported_cipher_algo *algo =
 181                         &cipher_algos[i];
 182
 183                 if (strcmp(cipher_keyword, algo->keyword) == 0)
 184                         return algo;
 185         }
 186
 187         return NULL;
 188 }
 189
 190 static const struct supported_auth_algo *
 191 find_match_auth_algo(const char *auth_keyword)
 192 {
 193         size_t i;
 194
 195         for (i = 0; i < RTE_DIM(auth_algos); i++) {
 196                 const struct supported_auth_algo *algo =
 197                         &auth_algos[i];
 198
 199                 if (strcmp(auth_keyword, algo->keyword) == 0)
 200                         return algo;
 201         }
 202
 203         return NULL;
 204 }
 205
 206 static const struct supported_aead_algo *
 207 find_match_aead_algo(const char *aead_keyword)
 208 {
 209         size_t i;
 210
 211         for (i = 0; i < RTE_DIM(aead_algos); i++) {
 212                 const struct supported_aead_algo *algo =
 213                         &aead_algos[i];
 214
 215                 if (strcmp(aead_keyword, algo->keyword) == 0)
 216                         return algo;
 217         }
 218
 219         return NULL;
 220 }
 221
 222 /** parse_key_string
 223  *  parse x:x:x:x.... hex number key string into uint8_t *key
 224  *  return:
 225  *  > 0: number of bytes parsed
 226  *  0:   failed
 227  */
 228 static uint32_t
 229 parse_key_string(const char *key_str, uint8_t *key)
 230 {
 231         const char *pt_start = key_str, *pt_end = key_str;
 232         uint32_t nb_bytes = 0;
 233
 234         while (pt_end != NULL) {
 235                 char sub_str[3] = {0};
 236
 237                 pt_end = strchr(pt_start, ':');
 238
 239                 if (pt_end == NULL) {
 240                         if (strlen(pt_start) > 2)
 241                                 return 0;
 242                         strncpy(sub_str, pt_start, 2);
 243                 } else {
 244                         if (pt_end - pt_start > 2)
 245                                 return 0;
 246
 247                         strncpy(sub_str, pt_start, pt_end - pt_start);
 248                         pt_start = pt_end + 1;
 249                 }
 250
 251                 key[nb_bytes++] = strtol(sub_str, NULL, 16);
 252         }
 253
 254         return nb_bytes;
 255 }
 256
 257 static int
 258 extend_sa_arr(struct ipsec_sa **sa_tbl, uint32_t cur_cnt, uint32_t *cur_sz)
 259 {
 260         if (*sa_tbl == NULL) {
 261                 *sa_tbl = calloc(SA_INIT_NB, sizeof(struct ipsec_sa));
 262                 if (*sa_tbl == NULL)
 263                         return -1;
 264                 *cur_sz = SA_INIT_NB;
 265                 return 0;
 266         }
 267
 268         if (cur_cnt >= *cur_sz) {
 269                 *sa_tbl = realloc(*sa_tbl,
 270                         *cur_sz * sizeof(struct ipsec_sa) * 2);
 271                 if (*sa_tbl == NULL)
 272                         return -1;
 273                 /* clean reallocated extra space */
 274                 memset(&(*sa_tbl)[*cur_sz], 0,
 275                         *cur_sz * sizeof(struct ipsec_sa));
 276                 *cur_sz *= 2;
 277         }
 278
 279         return 0;
 280 }
 281
 282 void
 283 parse_sa_tokens(char **tokens, uint32_t n_tokens,
 284         struct parse_status *status)
 285 {
 286         struct ipsec_sa *rule = NULL;
 287         struct rte_ipsec_session *ips;
 288         uint32_t ti; /*token index*/
 289         uint32_t *ri /*rule index*/;
 290         struct ipsec_sa_cnt *sa_cnt;
 291         uint32_t cipher_algo_p = 0;
 292         uint32_t auth_algo_p = 0;
 293         uint32_t aead_algo_p = 0;
 294         uint32_t src_p = 0;
 295         uint32_t dst_p = 0;
 296         uint32_t mode_p = 0;
 297         uint32_t type_p = 0;
 298         uint32_t portid_p = 0;
 299         uint32_t fallback_p = 0;
 300         int16_t status_p = 0;
 301         uint16_t udp_encap_p = 0;
 302
 303         if (strcmp(tokens[0], "in") == 0) {
 304                 ri = &nb_sa_in;
 305                 sa_cnt = &sa_in_cnt;
 306                 if (extend_sa_arr(&sa_in, nb_sa_in, &sa_in_sz) < 0)
 307                         return;
 308                 rule = &sa_in[*ri];
 309                 rule->direction = RTE_SECURITY_IPSEC_SA_DIR_INGRESS;
 310         } else {
 311                 ri = &nb_sa_out;
 312                 sa_cnt = &sa_out_cnt;
 313                 if (extend_sa_arr(&sa_out, nb_sa_out, &sa_out_sz) < 0)
 314                         return;
 315                 rule = &sa_out[*ri];
 316                 rule->direction = RTE_SECURITY_IPSEC_SA_DIR_EGRESS;
 317         }
 318
 319         /* spi number */
 320         APP_CHECK_TOKEN_IS_NUM(tokens, 1, status);
 321         if (status->status < 0)
 322                 return;
 323         if (atoi(tokens[1]) == INVALID_SPI)
 324                 return;
 325         rule->spi = atoi(tokens[1]);
 326         rule->portid = UINT16_MAX;
 327         ips = ipsec_get_primary_session(rule);
 328
 329         for (ti = 2; ti < n_tokens; ti++) {
 330                 if (strcmp(tokens[ti], "mode") == 0) {
 331                         APP_CHECK_PRESENCE(mode_p, tokens[ti], status);
 332                         if (status->status < 0)
 333                                 return;
 334
 335                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 336                         if (status->status < 0)
 337                                 return;
 338
 339                         if (strcmp(tokens[ti], "ipv4-tunnel") == 0) {
 340                                 sa_cnt->nb_v4++;
 341                                 rule->flags = IP4_TUNNEL;
 342                         } else if (strcmp(tokens[ti], "ipv6-tunnel") == 0) {
 343                                 sa_cnt->nb_v6++;
 344                                 rule->flags = IP6_TUNNEL;
 345                         } else if (strcmp(tokens[ti], "transport") == 0) {
 346                                 sa_cnt->nb_v4++;
 347                                 sa_cnt->nb_v6++;
 348                                 rule->flags = TRANSPORT;
 349                         } else {
 350                                 APP_CHECK(0, status, "unrecognized "
 351                                         "input \"%s\"", tokens[ti]);
 352                                 return;
 353                         }
 354
 355                         mode_p = 1;
 356                         continue;
 357                 }
 358
 359                 if (strcmp(tokens[ti], "cipher_algo") == 0) {
 360                         const struct supported_cipher_algo *algo;
 361                         uint32_t key_len;
 362
 363                         APP_CHECK_PRESENCE(cipher_algo_p, tokens[ti],
 364                                 status);
 365                         if (status->status < 0)
 366                                 return;
 367
 368                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 369                         if (status->status < 0)
 370                                 return;
 371
 372                         algo = find_match_cipher_algo(tokens[ti]);
 373
 374                         APP_CHECK(algo != NULL, status, "unrecognized "
 375                                 "input \"%s\"", tokens[ti]);
 376
 377                         if (status->status < 0)
 378                                 return;
 379
 380                         rule->cipher_algo = algo->algo;
 381                         rule->block_size = algo->block_size;
 382                         rule->iv_len = algo->iv_len;
 383                         rule->cipher_key_len = algo->key_len;
 384
 385                         /* for NULL algorithm, no cipher key required */
 386                         if (rule->cipher_algo == RTE_CRYPTO_CIPHER_NULL) {
 387                                 cipher_algo_p = 1;
 388                                 continue;
 389                         }
 390
 391                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 392                         if (status->status < 0)
 393                                 return;
 394
 395                         APP_CHECK(strcmp(tokens[ti], "cipher_key") == 0,
 396                                 status, "unrecognized input \"%s\", "
 397                                 "expect \"cipher_key\"", tokens[ti]);
 398                         if (status->status < 0)
 399                                 return;
 400
 401                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 402                         if (status->status < 0)
 403                                 return;
 404
 405                         key_len = parse_key_string(tokens[ti],
 406                                 rule->cipher_key);
 407                         APP_CHECK(key_len == rule->cipher_key_len, status,
 408                                 "unrecognized input \"%s\"", tokens[ti]);
 409                         if (status->status < 0)
 410                                 return;
 411
 412                         if (algo->algo == RTE_CRYPTO_CIPHER_AES_CBC ||
 413                                 algo->algo == RTE_CRYPTO_CIPHER_3DES_CBC)
 414                                 rule->salt = (uint32_t)rte_rand();
 415
 416                         if (algo->algo == RTE_CRYPTO_CIPHER_AES_CTR) {
 417                                 key_len -= 4;
 418                                 rule->cipher_key_len = key_len;
 419                                 memcpy(&rule->salt,
 420                                         &rule->cipher_key[key_len], 4);
 421                         }
 422
 423                         cipher_algo_p = 1;
 424                         continue;
 425                 }
 426
 427                 if (strcmp(tokens[ti], "auth_algo") == 0) {
 428                         const struct supported_auth_algo *algo;
 429                         uint32_t key_len;
 430
 431                         APP_CHECK_PRESENCE(auth_algo_p, tokens[ti],
 432                                 status);
 433                         if (status->status < 0)
 434                                 return;
 435
 436                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 437                         if (status->status < 0)
 438                                 return;
 439
 440                         algo = find_match_auth_algo(tokens[ti]);
 441                         APP_CHECK(algo != NULL, status, "unrecognized "
 442                                 "input \"%s\"", tokens[ti]);
 443
 444                         if (status->status < 0)
 445                                 return;
 446
 447                         rule->auth_algo = algo->algo;
 448                         rule->auth_key_len = algo->key_len;
 449                         rule->digest_len = algo->digest_len;
 450
 451                         /* NULL algorithm and combined algos do not
 452                          * require auth key
 453                          */
 454                         if (algo->key_not_req) {
 455                                 auth_algo_p = 1;
 456                                 continue;
 457                         }
 458
 459                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 460                         if (status->status < 0)
 461                                 return;
 462
 463                         APP_CHECK(strcmp(tokens[ti], "auth_key") == 0,
 464                                 status, "unrecognized input \"%s\", "
 465                                 "expect \"auth_key\"", tokens[ti]);
 466                         if (status->status < 0)
 467                                 return;
 468
 469                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 470                         if (status->status < 0)
 471                                 return;
 472
 473                         key_len = parse_key_string(tokens[ti],
 474                                 rule->auth_key);
 475                         APP_CHECK(key_len == rule->auth_key_len, status,
 476                                 "unrecognized input \"%s\"", tokens[ti]);
 477                         if (status->status < 0)
 478                                 return;
 479
 480                         auth_algo_p = 1;
 481                         continue;
 482                 }
 483
 484                 if (strcmp(tokens[ti], "aead_algo") == 0) {
 485                         const struct supported_aead_algo *algo;
 486                         uint32_t key_len;
 487
 488                         APP_CHECK_PRESENCE(aead_algo_p, tokens[ti],
 489                                 status);
 490                         if (status->status < 0)
 491                                 return;
 492
 493                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 494                         if (status->status < 0)
 495                                 return;
 496
 497                         algo = find_match_aead_algo(tokens[ti]);
 498
 499                         APP_CHECK(algo != NULL, status, "unrecognized "
 500                                 "input \"%s\"", tokens[ti]);
 501
 502                         if (status->status < 0)
 503                                 return;
 504
 505                         rule->aead_algo = algo->algo;
 506                         rule->cipher_key_len = algo->key_len;
 507                         rule->digest_len = algo->digest_len;
 508                         rule->aad_len = algo->aad_len;
 509                         rule->block_size = algo->block_size;
 510                         rule->iv_len = algo->iv_len;
 511
 512                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 513                         if (status->status < 0)
 514                                 return;
 515
 516                         APP_CHECK(strcmp(tokens[ti], "aead_key") == 0,
 517                                 status, "unrecognized input \"%s\", "
 518                                 "expect \"aead_key\"", tokens[ti]);
 519                         if (status->status < 0)
 520                                 return;
 521
 522                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 523                         if (status->status < 0)
 524                                 return;
 525
 526                         key_len = parse_key_string(tokens[ti],
 527                                 rule->cipher_key);
 528                         APP_CHECK(key_len == rule->cipher_key_len, status,
 529                                 "unrecognized input \"%s\"", tokens[ti]);
 530                         if (status->status < 0)
 531                                 return;
 532
 533                         key_len -= 4;
 534                         rule->cipher_key_len = key_len;
 535                         memcpy(&rule->salt,
 536                                 &rule->cipher_key[key_len], 4);
 537
 538                         aead_algo_p = 1;
 539                         continue;
 540                 }
 541
 542                 if (strcmp(tokens[ti], "src") == 0) {
 543                         APP_CHECK_PRESENCE(src_p, tokens[ti], status);
 544                         if (status->status < 0)
 545                                 return;
 546
 547                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 548                         if (status->status < 0)
 549                                 return;
 550
 551                         if (IS_IP4_TUNNEL(rule->flags)) {
 552                                 struct in_addr ip;
 553
 554                                 APP_CHECK(parse_ipv4_addr(tokens[ti],
 555                                         &ip, NULL) == 0, status,
 556                                         "unrecognized input \"%s\", "
 557                                         "expect valid ipv4 addr",
 558                                         tokens[ti]);
 559                                 if (status->status < 0)
 560                                         return;
 561                                 rule->src.ip.ip4 = rte_bswap32(
 562                                         (uint32_t)ip.s_addr);
 563                         } else if (IS_IP6_TUNNEL(rule->flags)) {
 564                                 struct in6_addr ip;
 565
 566                                 APP_CHECK(parse_ipv6_addr(tokens[ti], &ip,
 567                                         NULL) == 0, status,
 568                                         "unrecognized input \"%s\", "
 569                                         "expect valid ipv6 addr",
 570                                         tokens[ti]);
 571                                 if (status->status < 0)
 572                                         return;
 573                                 memcpy(rule->src.ip.ip6.ip6_b,
 574                                         ip.s6_addr, 16);
 575                         } else if (IS_TRANSPORT(rule->flags)) {
 576                                 APP_CHECK(0, status, "unrecognized input "
 577                                         "\"%s\"", tokens[ti]);
 578                                 return;
 579                         }
 580
 581                         src_p = 1;
 582                         continue;
 583                 }
 584
 585                 if (strcmp(tokens[ti], "dst") == 0) {
 586                         APP_CHECK_PRESENCE(dst_p, tokens[ti], status);
 587                         if (status->status < 0)
 588                                 return;
 589
 590                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 591                         if (status->status < 0)
 592                                 return;
 593
 594                         if (IS_IP4_TUNNEL(rule->flags)) {
 595                                 struct in_addr ip;
 596
 597                                 APP_CHECK(parse_ipv4_addr(tokens[ti],
 598                                         &ip, NULL) == 0, status,
 599                                         "unrecognized input \"%s\", "
 600                                         "expect valid ipv4 addr",
 601                                         tokens[ti]);
 602                                 if (status->status < 0)
 603                                         return;
 604                                 rule->dst.ip.ip4 = rte_bswap32(
 605                                         (uint32_t)ip.s_addr);
 606                         } else if (IS_IP6_TUNNEL(rule->flags)) {
 607                                 struct in6_addr ip;
 608
 609                                 APP_CHECK(parse_ipv6_addr(tokens[ti], &ip,
 610                                         NULL) == 0, status,
 611                                         "unrecognized input \"%s\", "
 612                                         "expect valid ipv6 addr",
 613                                         tokens[ti]);
 614                                 if (status->status < 0)
 615                                         return;
 616                                 memcpy(rule->dst.ip.ip6.ip6_b, ip.s6_addr, 16);
 617                         } else if (IS_TRANSPORT(rule->flags)) {
 618                                 APP_CHECK(0, status, "unrecognized "
 619                                         "input \"%s\"", tokens[ti]);
 620                                 return;
 621                         }
 622
 623                         dst_p = 1;
 624                         continue;
 625                 }
 626
 627                 if (strcmp(tokens[ti], "type") == 0) {
 628                         APP_CHECK_PRESENCE(type_p, tokens[ti], status);
 629                         if (status->status < 0)
 630                                 return;
 631
 632                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 633                         if (status->status < 0)
 634                                 return;
 635
 636                         if (strcmp(tokens[ti], "inline-crypto-offload") == 0)
 637                                 ips->type =
 638                                         RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO;
 639                         else if (strcmp(tokens[ti],
 640                                         "inline-protocol-offload") == 0)
 641                                 ips->type =
 642                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL;
 643                         else if (strcmp(tokens[ti],
 644                                         "lookaside-protocol-offload") == 0)
 645                                 ips->type =
 646                                 RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL;
 647                         else if (strcmp(tokens[ti], "no-offload") == 0)
 648                                 ips->type = RTE_SECURITY_ACTION_TYPE_NONE;
 649                         else if (strcmp(tokens[ti], "cpu-crypto") == 0)
 650                                 ips->type = RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO;
 651                         else {
 652                                 APP_CHECK(0, status, "Invalid input \"%s\"",
 653                                                 tokens[ti]);
 654                                 return;
 655                         }
 656
 657                         type_p = 1;
 658                         continue;
 659                 }
 660
 661                 if (strcmp(tokens[ti], "port_id") == 0) {
 662                         APP_CHECK_PRESENCE(portid_p, tokens[ti], status);
 663                         if (status->status < 0)
 664                                 return;
 665                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 666                         if (status->status < 0)
 667                                 return;
 668                         if (rule->portid == UINT16_MAX)
 669                                 rule->portid = atoi(tokens[ti]);
 670                         else if (rule->portid != atoi(tokens[ti])) {
 671                                 APP_CHECK(0, status,
 672                                         "portid %s not matching with already assigned portid %u",
 673                                         tokens[ti], rule->portid);
 674                                 return;
 675                         }
 676                         portid_p = 1;
 677                         continue;
 678                 }
 679
 680                 if (strcmp(tokens[ti], "fallback") == 0) {
 681                         struct rte_ipsec_session *fb;
 682
 683                         APP_CHECK(app_sa_prm.enable, status, "Fallback session "
 684                                 "not allowed for legacy mode.");
 685                         if (status->status < 0)
 686                                 return;
 687                         APP_CHECK(ips->type ==
 688                                 RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO, status,
 689                                 "Fallback session allowed if primary session "
 690                                 "is of type inline-crypto-offload only.");
 691                         if (status->status < 0)
 692                                 return;
 693                         APP_CHECK(rule->direction ==
 694                                 RTE_SECURITY_IPSEC_SA_DIR_INGRESS, status,
 695                                 "Fallback session not allowed for egress "
 696                                 "rule");
 697                         if (status->status < 0)
 698                                 return;
 699                         APP_CHECK_PRESENCE(fallback_p, tokens[ti], status);
 700                         if (status->status < 0)
 701                                 return;
 702                         INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 703                         if (status->status < 0)
 704                                 return;
 705                         fb = ipsec_get_fallback_session(rule);
 706                         if (strcmp(tokens[ti], "lookaside-none") == 0)
 707                                 fb->type = RTE_SECURITY_ACTION_TYPE_NONE;
 708                         else if (strcmp(tokens[ti], "cpu-crypto") == 0)
 709                                 fb->type = RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO;
 710                         else {
 711                                 APP_CHECK(0, status, "unrecognized fallback "
 712                                         "type %s.", tokens[ti]);
 713                                 return;
 714                         }
 715
 716                         rule->fallback_sessions = 1;
 717                         nb_crypto_sessions++;
 718                         fallback_p = 1;
 719                         continue;
 720                 }
 721                 if (strcmp(tokens[ti], "flow-direction") == 0) {
 722                         switch (ips->type) {
 723                         case RTE_SECURITY_ACTION_TYPE_NONE:
 724                         case RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO:
 725                                 rule->fdir_flag = 1;
 726                                 INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 727                                 if (status->status < 0)
 728                                         return;
 729                                 if (rule->portid == UINT16_MAX)
 730                                         rule->portid = atoi(tokens[ti]);
 731                                 else if (rule->portid != atoi(tokens[ti])) {
 732                                         APP_CHECK(0, status,
 733                                                 "portid %s not matching with already assigned portid %u",
 734                                                 tokens[ti], rule->portid);
 735                                         return;
 736                                 }
 737                                 INCREMENT_TOKEN_INDEX(ti, n_tokens, status);
 738                                 if (status->status < 0)
 739                                         return;
 740                                 rule->fdir_qid = atoi(tokens[ti]);
 741                                 /* validating portid and queueid */
 742                                 status_p = check_flow_params(rule->portid,
 743                                                 rule->fdir_qid);
 744                                 if (status_p < 0) {
 745                                         printf("port id %u / queue id %u is "
 746                                                 "not valid\n", rule->portid,
 747                                                  rule->fdir_qid);
 748                                 }
 749                                 break;
 750                         case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
 751                         case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 752                         case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 753                         default:
 754                                 APP_CHECK(0, status,
 755                                         "flow director not supported for security session type %d",
 756                                         ips->type);
 757                                 return;
 758                         }
 759                         continue;
 760                 }
 761                 if (strcmp(tokens[ti], "udp-encap") == 0) {
 762                         switch (ips->type) {
 763                         case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 764                         case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 765                                 APP_CHECK_PRESENCE(udp_encap_p, tokens[ti],
 766                                                    status);
 767                                 if (status->status < 0)
 768                                         return;
 769
 770                                 rule->udp_encap = 1;
 771                                 app_sa_prm.udp_encap = 1;
 772                                 udp_encap_p = 1;
 773                                 break;
 774                         default:
 775                                 APP_CHECK(0, status,
 776                                         "UDP encapsulation not supported for "
 777                                         "security session type %d",
 778                                         ips->type);
 779                                 return;
 780                         }
 781                         continue;
 782                 }
 783
 784                 /* unrecognizeable input */
 785                 APP_CHECK(0, status, "unrecognized input \"%s\"",
 786                         tokens[ti]);
 787                 return;
 788         }
 789
 790         if (aead_algo_p) {
 791                 APP_CHECK(cipher_algo_p == 0, status,
 792                                 "AEAD used, no need for cipher options");
 793                 if (status->status < 0)
 794                         return;
 795
 796                 APP_CHECK(auth_algo_p == 0, status,
 797                                 "AEAD used, no need for auth options");
 798                 if (status->status < 0)
 799                         return;
 800         } else {
 801                 APP_CHECK(cipher_algo_p == 1, status, "missing cipher or AEAD options");
 802                 if (status->status < 0)
 803                         return;
 804
 805                 APP_CHECK(auth_algo_p == 1, status, "missing auth or AEAD options");
 806                 if (status->status < 0)
 807                         return;
 808         }
 809
 810         APP_CHECK(mode_p == 1, status, "missing mode option");
 811         if (status->status < 0)
 812                 return;
 813
 814         if ((ips->type != RTE_SECURITY_ACTION_TYPE_NONE && ips->type !=
 815                         RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO) && (portid_p == 0))
 816                 printf("Missing portid option, falling back to non-offload\n");
 817
 818         if (!type_p || (!portid_p && ips->type !=
 819                         RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO)) {
 820                 ips->type = RTE_SECURITY_ACTION_TYPE_NONE;
 821         }
 822
 823         nb_crypto_sessions++;
 824         *ri = *ri + 1;
 825 }
 826
 827 static void
 828 print_one_sa_rule(const struct ipsec_sa *sa, int inbound)
 829 {
 830         uint32_t i;
 831         uint8_t a, b, c, d;
 832         const struct rte_ipsec_session *ips;
 833         const struct rte_ipsec_session *fallback_ips;
 834
 835         printf("\tspi_%s(%3u):", inbound?"in":"out", sa->spi);
 836
 837         for (i = 0; i < RTE_DIM(cipher_algos); i++) {
 838                 if (cipher_algos[i].algo == sa->cipher_algo &&
 839                                 cipher_algos[i].key_len == sa->cipher_key_len) {
 840                         printf("%s ", cipher_algos[i].keyword);
 841                         break;
 842                 }
 843         }
 844
 845         for (i = 0; i < RTE_DIM(auth_algos); i++) {
 846                 if (auth_algos[i].algo == sa->auth_algo) {
 847                         printf("%s ", auth_algos[i].keyword);
 848                         break;
 849                 }
 850         }
 851
 852         for (i = 0; i < RTE_DIM(aead_algos); i++) {
 853                 if (aead_algos[i].algo == sa->aead_algo &&
 854                                 aead_algos[i].key_len-4 == sa->cipher_key_len) {
 855                         printf("%s ", aead_algos[i].keyword);
 856                         break;
 857                 }
 858         }
 859
 860         printf("mode:");
 861
 862         switch (WITHOUT_TRANSPORT_VERSION(sa->flags)) {
 863         case IP4_TUNNEL:
 864                 printf("IP4Tunnel ");
 865                 uint32_t_to_char(sa->src.ip.ip4, &a, &b, &c, &d);
 866                 printf("%hhu.%hhu.%hhu.%hhu ", d, c, b, a);
 867                 uint32_t_to_char(sa->dst.ip.ip4, &a, &b, &c, &d);
 868                 printf("%hhu.%hhu.%hhu.%hhu", d, c, b, a);
 869                 break;
 870         case IP6_TUNNEL:
 871                 printf("IP6Tunnel ");
 872                 for (i = 0; i < 16; i++) {
 873                         if (i % 2 && i != 15)
 874                                 printf("%.2x:", sa->src.ip.ip6.ip6_b[i]);
 875                         else
 876                                 printf("%.2x", sa->src.ip.ip6.ip6_b[i]);
 877                 }
 878                 printf(" ");
 879                 for (i = 0; i < 16; i++) {
 880                         if (i % 2 && i != 15)
 881                                 printf("%.2x:", sa->dst.ip.ip6.ip6_b[i]);
 882                         else
 883                                 printf("%.2x", sa->dst.ip.ip6.ip6_b[i]);
 884                 }
 885                 break;
 886         case TRANSPORT:
 887                 printf("Transport ");
 888                 break;
 889         }
 890
 891         ips = &sa->sessions[IPSEC_SESSION_PRIMARY];
 892         printf(" type:");
 893         switch (ips->type) {
 894         case RTE_SECURITY_ACTION_TYPE_NONE:
 895                 printf("no-offload ");
 896                 break;
 897         case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO:
 898                 printf("inline-crypto-offload ");
 899                 break;
 900         case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
 901                 printf("inline-protocol-offload ");
 902                 break;
 903         case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
 904                 printf("lookaside-protocol-offload ");
 905                 break;
 906         case RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO:
 907                 printf("cpu-crypto-accelerated ");
 908                 break;
 909         }
 910
 911         fallback_ips = &sa->sessions[IPSEC_SESSION_FALLBACK];
 912         if (fallback_ips != NULL && sa->fallback_sessions > 0) {
 913                 printf("inline fallback: ");
 914                 switch (fallback_ips->type) {
 915                 case RTE_SECURITY_ACTION_TYPE_NONE:
 916                         printf("lookaside-none");
 917                         break;
 918                 case RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO:
 919                         printf("cpu-crypto-accelerated");
 920                         break;
 921                 default:
 922                         printf("invalid");
 923                         break;
 924                 }
 925         }
 926         if (sa->fdir_flag == 1)
 927                 printf("flow-direction port %d queue %d", sa->portid,
 928                                 sa->fdir_qid);
 929
 930         printf("\n");
 931 }
 932
 933 static struct sa_ctx *
 934 sa_create(const char *name, int32_t socket_id, uint32_t nb_sa)
 935 {
 936         char s[PATH_MAX];
 937         struct sa_ctx *sa_ctx;
 938         uint32_t mz_size;
 939         const struct rte_memzone *mz;
 940
 941         snprintf(s, sizeof(s), "%s_%u", name, socket_id);
 942
 943         /* Create SA context */
 944         printf("Creating SA context with %u maximum entries on socket %d\n",
 945                         nb_sa, socket_id);
 946
 947         mz_size = sizeof(struct ipsec_xf) * nb_sa;
 948         mz = rte_memzone_reserve(s, mz_size, socket_id,
 949                         RTE_MEMZONE_1GB | RTE_MEMZONE_SIZE_HINT_ONLY);
 950         if (mz == NULL) {
 951                 printf("Failed to allocate SA XFORM memory\n");
 952                 rte_errno = ENOMEM;
 953                 return NULL;
 954         }
 955
 956         sa_ctx = rte_zmalloc(NULL, sizeof(struct sa_ctx) +
 957                 sizeof(struct ipsec_sa) * nb_sa, RTE_CACHE_LINE_SIZE);
 958
 959         if (sa_ctx == NULL) {
 960                 printf("Failed to allocate SA CTX memory\n");
 961                 rte_errno = ENOMEM;
 962                 rte_memzone_free(mz);
 963                 return NULL;
 964         }
 965
 966         sa_ctx->xf = (struct ipsec_xf *)mz->addr;
 967         sa_ctx->nb_sa = nb_sa;
 968
 969         return sa_ctx;
 970 }
 971
 972 static int
 973 check_eth_dev_caps(uint16_t portid, uint32_t inbound)
 974 {
 975         struct rte_eth_dev_info dev_info;
 976         int retval;
 977
 978         retval = rte_eth_dev_info_get(portid, &dev_info);
 979         if (retval != 0) {
 980                 RTE_LOG(ERR, IPSEC,
 981                         "Error during getting device (port %u) info: %s\n",
 982                         portid, strerror(-retval));
 983
 984                 return retval;
 985         }
 986
 987         if (inbound) {
 988                 if ((dev_info.rx_offload_capa &
 989                                 RTE_ETH_RX_OFFLOAD_SECURITY) == 0) {
 990                         RTE_LOG(WARNING, PORT,
 991                                 "hardware RX IPSec offload is not supported\n");
 992                         return -EINVAL;
 993                 }
 994
 995         } else { /* outbound */
 996                 if ((dev_info.tx_offload_capa &
 997                                 RTE_ETH_TX_OFFLOAD_SECURITY) == 0) {
 998                         RTE_LOG(WARNING, PORT,
 999                                 "hardware TX IPSec offload is not supported\n");
1000                         return -EINVAL;
1001                 }
1002         }
1003         return 0;
1004 }
1005
1006 /*
1007  * Helper function, tries to determine next_proto for SPI
1008  * by searching though SP rules.
1009  */
1010 static int
1011 get_spi_proto(uint32_t spi, enum rte_security_ipsec_sa_direction dir,
1012                 struct ip_addr ip_addr[2], uint32_t mask[2])
1013 {
1014         int32_t rc4, rc6;
1015
1016         rc4 = sp4_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS,
1017                                 ip_addr, mask);
1018         rc6 = sp6_spi_present(spi, dir == RTE_SECURITY_IPSEC_SA_DIR_INGRESS,
1019                                 ip_addr, mask);
1020
1021         if (rc4 >= 0) {
1022                 if (rc6 >= 0) {
1023                         RTE_LOG(ERR, IPSEC,
1024                                 "%s: SPI %u used simultaeously by "
1025                                 "IPv4(%d) and IPv6 (%d) SP rules\n",
1026                                 __func__, spi, rc4, rc6);
1027                         return -EINVAL;
1028                 } else
1029                         return IPPROTO_IPIP;
1030         } else if (rc6 < 0) {
1031                 RTE_LOG(ERR, IPSEC,
1032                         "%s: SPI %u is not used by any SP rule\n",
1033                         __func__, spi);
1034                 return -EINVAL;
1035         } else
1036                 return IPPROTO_IPV6;
1037 }
1038
1039 /*
1040  * Helper function for getting source and destination IP addresses
1041  * from SP. Needed for inline crypto transport mode, as addresses are not
1042  * provided in config file for that mode. It checks if SP for current SA exists,
1043  * and based on what type of protocol is returned, it stores appropriate
1044  * addresses got from SP into SA.
1045  */
1046 static int
1047 sa_add_address_inline_crypto(struct ipsec_sa *sa)
1048 {
1049         int protocol;
1050         struct ip_addr ip_addr[2];
1051         uint32_t mask[2];
1052
1053         protocol = get_spi_proto(sa->spi, sa->direction, ip_addr, mask);
1054         if (protocol < 0)
1055                 return protocol;
1056         else if (protocol == IPPROTO_IPIP) {
1057                 sa->flags |= IP4_TRANSPORT;
1058                 if (mask[0] == IP4_FULL_MASK &&
1059                                 mask[1] == IP4_FULL_MASK &&
1060                                 ip_addr[0].ip.ip4 != 0 &&
1061                                 ip_addr[1].ip.ip4 != 0) {
1062
1063                         sa->src.ip.ip4 = ip_addr[0].ip.ip4;
1064                         sa->dst.ip.ip4 = ip_addr[1].ip.ip4;
1065                 } else {
1066                         RTE_LOG(ERR, IPSEC,
1067                         "%s: No valid address or mask entry in"
1068                         " IPv4 SP rule for SPI %u\n",
1069                         __func__, sa->spi);
1070                         return -EINVAL;
1071                 }
1072         } else if (protocol == IPPROTO_IPV6) {
1073                 sa->flags |= IP6_TRANSPORT;
1074                 if (mask[0] == IP6_FULL_MASK &&
1075                                 mask[1] == IP6_FULL_MASK &&
1076                                 (ip_addr[0].ip.ip6.ip6[0] != 0 ||
1077                                 ip_addr[0].ip.ip6.ip6[1] != 0) &&
1078                                 (ip_addr[1].ip.ip6.ip6[0] != 0 ||
1079                                 ip_addr[1].ip.ip6.ip6[1] != 0)) {
1080
1081                         sa->src.ip.ip6 = ip_addr[0].ip.ip6;
1082                         sa->dst.ip.ip6 = ip_addr[1].ip.ip6;
1083                 } else {
1084                         RTE_LOG(ERR, IPSEC,
1085                         "%s: No valid address or mask entry in"
1086                         " IPv6 SP rule for SPI %u\n",
1087                         __func__, sa->spi);
1088                         return -EINVAL;
1089                 }
1090         }
1091         return 0;
1092 }
1093
1094 static int
1095 sa_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
1096                 uint32_t nb_entries, uint32_t inbound,
1097                 struct socket_ctx *skt_ctx)
1098 {
1099         struct ipsec_sa *sa;
1100         uint32_t i, idx;
1101         uint16_t iv_length, aad_length;
1102         int inline_status;
1103         int32_t rc;
1104         struct rte_ipsec_session *ips;
1105
1106         /* for ESN upper 32 bits of SQN also need to be part of AAD */
1107         aad_length = (app_sa_prm.enable_esn != 0) ? sizeof(uint32_t) : 0;
1108
1109         for (i = 0; i < nb_entries; i++) {
1110                 idx = i;
1111                 sa = &sa_ctx->sa[idx];
1112                 if (sa->spi != 0) {
1113                         printf("Index %u already in use by SPI %u\n",
1114                                         idx, sa->spi);
1115                         return -EINVAL;
1116                 }
1117                 *sa = entries[i];
1118
1119                 if (inbound) {
1120                         rc = ipsec_sad_add(&sa_ctx->sad, sa);
1121                         if (rc != 0)
1122                                 return rc;
1123                 }
1124
1125                 sa->seq = 0;
1126                 ips = ipsec_get_primary_session(sa);
1127
1128                 if (ips->type == RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL ||
1129                         ips->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
1130                         if (check_eth_dev_caps(sa->portid, inbound))
1131                                 return -EINVAL;
1132                 }
1133
1134                 switch (WITHOUT_TRANSPORT_VERSION(sa->flags)) {
1135                 case IP4_TUNNEL:
1136                         sa->src.ip.ip4 = rte_cpu_to_be_32(sa->src.ip.ip4);
1137                         sa->dst.ip.ip4 = rte_cpu_to_be_32(sa->dst.ip.ip4);
1138                         break;
1139                 case TRANSPORT:
1140                         if (ips->type ==
1141                                 RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
1142                                 inline_status =
1143                                         sa_add_address_inline_crypto(sa);
1144                                 if (inline_status < 0)
1145                                         return inline_status;
1146                         }
1147                         break;
1148                 }
1149
1150                 if (sa->aead_algo == RTE_CRYPTO_AEAD_AES_GCM) {
1151                         iv_length = 12;
1152
1153                         sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AEAD;
1154                         sa_ctx->xf[idx].a.aead.algo = sa->aead_algo;
1155                         sa_ctx->xf[idx].a.aead.key.data = sa->cipher_key;
1156                         sa_ctx->xf[idx].a.aead.key.length =
1157                                 sa->cipher_key_len;
1158                         sa_ctx->xf[idx].a.aead.op = (inbound == 1) ?
1159                                 RTE_CRYPTO_AEAD_OP_DECRYPT :
1160                                 RTE_CRYPTO_AEAD_OP_ENCRYPT;
1161                         sa_ctx->xf[idx].a.next = NULL;
1162                         sa_ctx->xf[idx].a.aead.iv.offset = IV_OFFSET;
1163                         sa_ctx->xf[idx].a.aead.iv.length = iv_length;
1164                         sa_ctx->xf[idx].a.aead.aad_length =
1165                                 sa->aad_len + aad_length;
1166                         sa_ctx->xf[idx].a.aead.digest_length =
1167                                 sa->digest_len;
1168
1169                         sa->xforms = &sa_ctx->xf[idx].a;
1170                 } else {
1171                         switch (sa->cipher_algo) {
1172                         case RTE_CRYPTO_CIPHER_NULL:
1173                         case RTE_CRYPTO_CIPHER_3DES_CBC:
1174                         case RTE_CRYPTO_CIPHER_AES_CBC:
1175                                 iv_length = sa->iv_len;
1176                                 break;
1177                         case RTE_CRYPTO_CIPHER_AES_CTR:
1178                                 iv_length = 16;
1179                                 break;
1180                         default:
1181                                 RTE_LOG(ERR, IPSEC_ESP,
1182                                                 "unsupported cipher algorithm %u\n",
1183                                                 sa->cipher_algo);
1184                                 return -EINVAL;
1185                         }
1186
1187                         if (inbound) {
1188                                 sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
1189                                 sa_ctx->xf[idx].b.cipher.algo = sa->cipher_algo;
1190                                 sa_ctx->xf[idx].b.cipher.key.data = sa->cipher_key;
1191                                 sa_ctx->xf[idx].b.cipher.key.length =
1192                                         sa->cipher_key_len;
1193                                 sa_ctx->xf[idx].b.cipher.op =
1194                                         RTE_CRYPTO_CIPHER_OP_DECRYPT;
1195                                 sa_ctx->xf[idx].b.next = NULL;
1196                                 sa_ctx->xf[idx].b.cipher.iv.offset = IV_OFFSET;
1197                                 sa_ctx->xf[idx].b.cipher.iv.length = iv_length;
1198
1199                                 sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_AUTH;
1200                                 sa_ctx->xf[idx].a.auth.algo = sa->auth_algo;
1201                                 sa_ctx->xf[idx].a.auth.key.data = sa->auth_key;
1202                                 sa_ctx->xf[idx].a.auth.key.length =
1203                                         sa->auth_key_len;
1204                                 sa_ctx->xf[idx].a.auth.digest_length =
1205                                         sa->digest_len;
1206                                 sa_ctx->xf[idx].a.auth.op =
1207                                         RTE_CRYPTO_AUTH_OP_VERIFY;
1208                         } else { /* outbound */
1209                                 sa_ctx->xf[idx].a.type = RTE_CRYPTO_SYM_XFORM_CIPHER;
1210                                 sa_ctx->xf[idx].a.cipher.algo = sa->cipher_algo;
1211                                 sa_ctx->xf[idx].a.cipher.key.data = sa->cipher_key;
1212                                 sa_ctx->xf[idx].a.cipher.key.length =
1213                                         sa->cipher_key_len;
1214                                 sa_ctx->xf[idx].a.cipher.op =
1215                                         RTE_CRYPTO_CIPHER_OP_ENCRYPT;
1216                                 sa_ctx->xf[idx].a.next = NULL;
1217                                 sa_ctx->xf[idx].a.cipher.iv.offset = IV_OFFSET;
1218                                 sa_ctx->xf[idx].a.cipher.iv.length = iv_length;
1219
1220                                 sa_ctx->xf[idx].b.type = RTE_CRYPTO_SYM_XFORM_AUTH;
1221                                 sa_ctx->xf[idx].b.auth.algo = sa->auth_algo;
1222                                 sa_ctx->xf[idx].b.auth.key.data = sa->auth_key;
1223                                 sa_ctx->xf[idx].b.auth.key.length =
1224                                         sa->auth_key_len;
1225                                 sa_ctx->xf[idx].b.auth.digest_length =
1226                                         sa->digest_len;
1227                                 sa_ctx->xf[idx].b.auth.op =
1228                                         RTE_CRYPTO_AUTH_OP_GENERATE;
1229                         }
1230
1231                         sa_ctx->xf[idx].a.next = &sa_ctx->xf[idx].b;
1232                         sa_ctx->xf[idx].b.next = NULL;
1233                         sa->xforms = &sa_ctx->xf[idx].a;
1234                 }
1235
1236                 if (ips->type ==
1237                         RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL ||
1238                         ips->type ==
1239                         RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) {
1240                         rc = create_inline_session(skt_ctx, sa, ips);
1241                         if (rc != 0) {
1242                                 RTE_LOG(ERR, IPSEC_ESP,
1243                                         "create_inline_session() failed\n");
1244                                 return -EINVAL;
1245                         }
1246                 }
1247
1248                 if (sa->fdir_flag && inbound) {
1249                         rc = create_ipsec_esp_flow(sa);
1250                         if (rc != 0)
1251                                 RTE_LOG(ERR, IPSEC_ESP,
1252                                         "create_ipsec_esp_flow() failed\n");
1253                 }
1254                 print_one_sa_rule(sa, inbound);
1255         }
1256
1257         return 0;
1258 }
1259
1260 static inline int
1261 sa_out_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
1262                 uint32_t nb_entries, struct socket_ctx *skt_ctx)
1263 {
1264         return sa_add_rules(sa_ctx, entries, nb_entries, 0, skt_ctx);
1265 }
1266
1267 static inline int
1268 sa_in_add_rules(struct sa_ctx *sa_ctx, const struct ipsec_sa entries[],
1269                 uint32_t nb_entries, struct socket_ctx *skt_ctx)
1270 {
1271         return sa_add_rules(sa_ctx, entries, nb_entries, 1, skt_ctx);
1272 }
1273
1274 /*
1275  * helper function, fills parameters that are identical for all SAs
1276  */
1277 static void
1278 fill_ipsec_app_sa_prm(struct rte_ipsec_sa_prm *prm,
1279         const struct app_sa_prm *app_prm)
1280 {
1281         memset(prm, 0, sizeof(*prm));
1282
1283         prm->flags = app_prm->flags;
1284         prm->ipsec_xform.options.esn = app_prm->enable_esn;
1285         prm->ipsec_xform.replay_win_sz = app_prm->window_size;
1286 }
1287
1288 static int
1289 fill_ipsec_sa_prm(struct rte_ipsec_sa_prm *prm, const struct ipsec_sa *ss,
1290         const struct rte_ipv4_hdr *v4, struct rte_ipv6_hdr *v6)
1291 {
1292         int32_t rc;
1293
1294         /*
1295          * Try to get SPI next proto by searching that SPI in SPD.
1296          * probably not the optimal way, but there seems nothing
1297          * better right now.
1298          */
1299         rc = get_spi_proto(ss->spi, ss->direction, NULL, NULL);
1300         if (rc < 0)
1301                 return rc;
1302
1303         fill_ipsec_app_sa_prm(prm, &app_sa_prm);
1304         prm->userdata = (uintptr_t)ss;
1305
1306         /* setup ipsec xform */
1307         prm->ipsec_xform.spi = ss->spi;
1308         prm->ipsec_xform.salt = ss->salt;
1309         prm->ipsec_xform.direction = ss->direction;
1310         prm->ipsec_xform.proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP;
1311         prm->ipsec_xform.mode = (IS_TRANSPORT(ss->flags)) ?
1312                 RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT :
1313                 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL;
1314         prm->ipsec_xform.options.ecn = 1;
1315         prm->ipsec_xform.options.copy_dscp = 1;
1316
1317         if (IS_IP4_TUNNEL(ss->flags)) {
1318                 prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV4;
1319                 prm->tun.hdr_len = sizeof(*v4);
1320                 prm->tun.next_proto = rc;
1321                 prm->tun.hdr = v4;
1322         } else if (IS_IP6_TUNNEL(ss->flags)) {
1323                 prm->ipsec_xform.tunnel.type = RTE_SECURITY_IPSEC_TUNNEL_IPV6;
1324                 prm->tun.hdr_len = sizeof(*v6);
1325                 prm->tun.next_proto = rc;
1326                 prm->tun.hdr = v6;
1327         } else {
1328                 /* transport mode */
1329                 prm->trs.proto = rc;
1330         }
1331
1332         /* setup crypto section */
1333         prm->crypto_xform = ss->xforms;
1334         return 0;
1335 }
1336
1337 static int
1338 fill_ipsec_session(struct rte_ipsec_session *ss, struct rte_ipsec_sa *sa)
1339 {
1340         int32_t rc = 0;
1341
1342         ss->sa = sa;
1343
1344         if (ss->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO ||
1345                 ss->type == RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) {
1346                 if (ss->security.ses != NULL) {
1347                         rc = rte_ipsec_session_prepare(ss);
1348                         if (rc != 0)
1349                                 memset(ss, 0, sizeof(*ss));
1350                 }
1351         }
1352
1353         return rc;
1354 }
1355
1356 /*
1357  * Initialise related rte_ipsec_sa object.
1358  */
1359 static int
1360 ipsec_sa_init(struct ipsec_sa *lsa, struct rte_ipsec_sa *sa, uint32_t sa_size)
1361 {
1362         int rc;
1363         struct rte_ipsec_sa_prm prm;
1364         struct rte_ipsec_session *ips;
1365         struct rte_ipv4_hdr v4  = {
1366                 .version_ihl = IPVERSION << 4 |
1367                         sizeof(v4) / RTE_IPV4_IHL_MULTIPLIER,
1368                 .time_to_live = IPDEFTTL,
1369                 .next_proto_id = IPPROTO_ESP,
1370                 .src_addr = lsa->src.ip.ip4,
1371                 .dst_addr = lsa->dst.ip.ip4,
1372         };
1373         struct rte_ipv6_hdr v6 = {
1374                 .vtc_flow = htonl(IP6_VERSION << 28),
1375                 .proto = IPPROTO_ESP,
1376         };
1377
1378         if (IS_IP6_TUNNEL(lsa->flags)) {
1379                 memcpy(v6.src_addr, lsa->src.ip.ip6.ip6_b, sizeof(v6.src_addr));
1380                 memcpy(v6.dst_addr, lsa->dst.ip.ip6.ip6_b, sizeof(v6.dst_addr));
1381         }
1382
1383         rc = fill_ipsec_sa_prm(&prm, lsa, &v4, &v6);
1384         if (rc == 0)
1385                 rc = rte_ipsec_sa_init(sa, &prm, sa_size);
1386         if (rc < 0)
1387                 return rc;
1388
1389         /* init primary processing session */
1390         ips = ipsec_get_primary_session(lsa);
1391         rc = fill_ipsec_session(ips, sa);
1392         if (rc != 0)
1393                 return rc;
1394
1395         /* init inline fallback processing session */
1396         if (lsa->fallback_sessions == 1)
1397                 rc = fill_ipsec_session(ipsec_get_fallback_session(lsa), sa);
1398
1399         return rc;
1400 }
1401
1402 /*
1403  * Allocate space and init rte_ipsec_sa strcutures,
1404  * one per session.
1405  */
1406 static int
1407 ipsec_satbl_init(struct sa_ctx *ctx, uint32_t nb_ent, int32_t socket)
1408 {
1409         int32_t rc, sz;
1410         uint32_t i, idx;
1411         size_t tsz;
1412         struct rte_ipsec_sa *sa;
1413         struct ipsec_sa *lsa;
1414         struct rte_ipsec_sa_prm prm;
1415
1416         /* determine SA size */
1417         idx = 0;
1418         fill_ipsec_sa_prm(&prm, ctx->sa + idx, NULL, NULL);
1419         sz = rte_ipsec_sa_size(&prm);
1420         if (sz < 0) {
1421                 RTE_LOG(ERR, IPSEC, "%s(%p, %u, %d): "
1422                         "failed to determine SA size, error code: %d\n",
1423                         __func__, ctx, nb_ent, socket, sz);
1424                 return sz;
1425         }
1426
1427         tsz = sz * nb_ent;
1428
1429         ctx->satbl = rte_zmalloc_socket(NULL, tsz, RTE_CACHE_LINE_SIZE, socket);
1430         if (ctx->satbl == NULL) {
1431                 RTE_LOG(ERR, IPSEC,
1432                         "%s(%p, %u, %d): failed to allocate %zu bytes\n",
1433                         __func__,  ctx, nb_ent, socket, tsz);
1434                 return -ENOMEM;
1435         }
1436
1437         rc = 0;
1438         for (i = 0; i != nb_ent && rc == 0; i++) {
1439
1440                 idx = i;
1441
1442                 sa = (struct rte_ipsec_sa *)((uintptr_t)ctx->satbl + sz * i);
1443                 lsa = ctx->sa + idx;
1444
1445                 rc = ipsec_sa_init(lsa, sa, sz);
1446         }
1447
1448         return rc;
1449 }
1450
1451 static int
1452 sa_cmp(const void *p, const void *q)
1453 {
1454         uint32_t spi1 = ((const struct ipsec_sa *)p)->spi;
1455         uint32_t spi2 = ((const struct ipsec_sa *)q)->spi;
1456
1457         return (int)(spi1 - spi2);
1458 }
1459
1460 /*
1461  * Walk through all SA rules to find an SA with given SPI
1462  */
1463 int
1464 sa_spi_present(struct sa_ctx *sa_ctx, uint32_t spi, int inbound)
1465 {
1466         uint32_t num;
1467         struct ipsec_sa *sa;
1468         struct ipsec_sa tmpl;
1469         const struct ipsec_sa *sar;
1470
1471         sar = sa_ctx->sa;
1472         if (inbound != 0)
1473                 num = nb_sa_in;
1474         else
1475                 num = nb_sa_out;
1476
1477         tmpl.spi = spi;
1478
1479         sa = bsearch(&tmpl, sar, num, sizeof(struct ipsec_sa), sa_cmp);
1480         if (sa != NULL)
1481                 return RTE_PTR_DIFF(sa, sar) / sizeof(struct ipsec_sa);
1482
1483         return -ENOENT;
1484 }
1485
1486 void
1487 sa_init(struct socket_ctx *ctx, int32_t socket_id)
1488 {
1489         int32_t rc;
1490         const char *name;
1491
1492         if (ctx == NULL)
1493                 rte_exit(EXIT_FAILURE, "NULL context.\n");
1494
1495         if (ctx->sa_in != NULL)
1496                 rte_exit(EXIT_FAILURE, "Inbound SA DB for socket %u already "
1497                                 "initialized\n", socket_id);
1498
1499         if (ctx->sa_out != NULL)
1500                 rte_exit(EXIT_FAILURE, "Outbound SA DB for socket %u already "
1501                                 "initialized\n", socket_id);
1502
1503         if (nb_sa_in > 0) {
1504                 name = "sa_in";
1505                 ctx->sa_in = sa_create(name, socket_id, nb_sa_in);
1506                 if (ctx->sa_in == NULL)
1507                         rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
1508                                 "context %s in socket %d\n", rte_errno,
1509                                 name, socket_id);
1510
1511                 rc = ipsec_sad_create(name, &ctx->sa_in->sad, socket_id,
1512                                 &sa_in_cnt);
1513                 if (rc != 0)
1514                         rte_exit(EXIT_FAILURE, "failed to init SAD\n");
1515
1516                 sa_in_add_rules(ctx->sa_in, sa_in, nb_sa_in, ctx);
1517
1518                 if (app_sa_prm.enable != 0) {
1519                         rc = ipsec_satbl_init(ctx->sa_in, nb_sa_in,
1520                                 socket_id);
1521                         if (rc != 0)
1522                                 rte_exit(EXIT_FAILURE,
1523                                         "failed to init inbound SAs\n");
1524                 }
1525         } else
1526                 RTE_LOG(WARNING, IPSEC, "No SA Inbound rule specified\n");
1527
1528         if (nb_sa_out > 0) {
1529                 name = "sa_out";
1530                 ctx->sa_out = sa_create(name, socket_id, nb_sa_out);
1531                 if (ctx->sa_out == NULL)
1532                         rte_exit(EXIT_FAILURE, "Error [%d] creating SA "
1533                                 "context %s in socket %d\n", rte_errno,
1534                                 name, socket_id);
1535
1536                 sa_out_add_rules(ctx->sa_out, sa_out, nb_sa_out, ctx);
1537
1538                 if (app_sa_prm.enable != 0) {
1539                         rc = ipsec_satbl_init(ctx->sa_out, nb_sa_out,
1540                                 socket_id);
1541                         if (rc != 0)
1542                                 rte_exit(EXIT_FAILURE,
1543                                         "failed to init outbound SAs\n");
1544                 }
1545         } else
1546                 RTE_LOG(WARNING, IPSEC, "No SA Outbound rule "
1547                         "specified\n");
1548 }
1549
1550 int
1551 inbound_sa_check(struct sa_ctx *sa_ctx, struct rte_mbuf *m, uint32_t sa_idx)
1552 {
1553         struct ipsec_mbuf_metadata *priv;
1554         struct ipsec_sa *sa;
1555
1556         priv = get_priv(m);
1557         sa = priv->sa;
1558         if (sa != NULL)
1559                 return (sa_ctx->sa[sa_idx].spi == sa->spi);
1560
1561         RTE_LOG(ERR, IPSEC, "SA not saved in private data\n");
1562         return 0;
1563 }
1564
1565 void
1566 inbound_sa_lookup(struct sa_ctx *sa_ctx, struct rte_mbuf *pkts[],
1567                 void *sa_arr[], uint16_t nb_pkts)
1568 {
1569         uint32_t i;
1570         void *result_sa;
1571         struct ipsec_sa *sa;
1572
1573         sad_lookup(&sa_ctx->sad, pkts, sa_arr, nb_pkts);
1574
1575         /*
1576          * Mark need for inline offload fallback on the LSB of SA pointer.
1577          * Thanks to packet grouping mechanism which ipsec_process is using
1578          * packets marked for fallback processing will form separate group.
1579          *
1580          * Because it is not safe to use SA pointer it is casted to generic
1581          * pointer to prevent from unintentional use. Use ipsec_mask_saptr
1582          * to get valid struct pointer.
1583          */
1584         for (i = 0; i < nb_pkts; i++) {
1585                 if (sa_arr[i] == NULL)
1586                         continue;
1587
1588                 result_sa = sa = sa_arr[i];
1589                 if (MBUF_NO_SEC_OFFLOAD(pkts[i]) &&
1590                         sa->fallback_sessions > 0) {
1591                         uintptr_t intsa = (uintptr_t)sa;
1592                         intsa |= IPSEC_SA_OFFLOAD_FALLBACK_FLAG;
1593                         result_sa = (void *)intsa;
1594                 }
1595                 sa_arr[i] = result_sa;
1596         }
1597 }
1598
1599 void
1600 outbound_sa_lookup(struct sa_ctx *sa_ctx, uint32_t sa_idx[],
1601                 void *sa[], uint16_t nb_pkts)
1602 {
1603         uint32_t i;
1604
1605         for (i = 0; i < nb_pkts; i++)
1606                 sa[i] = &sa_ctx->sa[sa_idx[i]];
1607 }
1608
1609 /*
1610  * Select HW offloads to be used.
1611  */
1612 int
1613 sa_check_offloads(uint16_t port_id, uint64_t *rx_offloads,
1614                 uint64_t *tx_offloads)
1615 {
1616         struct ipsec_sa *rule;
1617         uint32_t idx_sa;
1618         enum rte_security_session_action_type rule_type;
1619
1620         *rx_offloads = 0;
1621         *tx_offloads = 0;
1622
1623         /* Check for inbound rules that use offloads and use this port */
1624         for (idx_sa = 0; idx_sa < nb_sa_in; idx_sa++) {
1625                 rule = &sa_in[idx_sa];
1626                 rule_type = ipsec_get_action_type(rule);
1627                 if ((rule_type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO ||
1628                                 rule_type ==
1629                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
1630                                 && rule->portid == port_id)
1631                         *rx_offloads |= RTE_ETH_RX_OFFLOAD_SECURITY;
1632         }
1633
1634         /* Check for outbound rules that use offloads and use this port */
1635         for (idx_sa = 0; idx_sa < nb_sa_out; idx_sa++) {
1636                 rule = &sa_out[idx_sa];
1637                 rule_type = ipsec_get_action_type(rule);
1638                 if ((rule_type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO ||
1639                                 rule_type ==
1640                                 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL)
1641                                 && rule->portid == port_id)
1642                         *tx_offloads |= RTE_ETH_TX_OFFLOAD_SECURITY;
1643         }
1644         return 0;
1645 }
1646
1647 void
1648 sa_sort_arr(void)
1649 {
1650         qsort(sa_in, nb_sa_in, sizeof(struct ipsec_sa), sa_cmp);
1651         qsort(sa_out, nb_sa_out, sizeof(struct ipsec_sa), sa_cmp);
1652 }
1653
1654 uint32_t
1655 get_nb_crypto_sessions(void)
1656 {
1657         return nb_crypto_sessions;
1658 }