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