1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2016-2017 Intel Corporation 3 */ 4 #include <sys/types.h> 5 #include <netinet/in.h> 6 #include <netinet/ip.h> 7 8 #include <rte_branch_prediction.h> 9 #include <rte_log.h> 10 #include <rte_crypto.h> 11 #include <rte_security.h> 12 #include <rte_cryptodev.h> 13 #include <rte_ethdev.h> 14 #include <rte_mbuf.h> 15 #include <rte_hash.h> 16 17 #include "ipsec.h" 18 #include "esp.h" 19 20 static inline void 21 set_ipsec_conf(struct ipsec_sa *sa, struct rte_security_ipsec_xform *ipsec) 22 { 23 if (ipsec->mode == RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) { 24 struct rte_security_ipsec_tunnel_param *tunnel = 25 &ipsec->tunnel; 26 if (sa->flags == IP4_TUNNEL) { 27 tunnel->type = 28 RTE_SECURITY_IPSEC_TUNNEL_IPV4; 29 tunnel->ipv4.ttl = IPDEFTTL; 30 31 memcpy((uint8_t *)&tunnel->ipv4.src_ip, 32 (uint8_t *)&sa->src.ip.ip4, 4); 33 34 memcpy((uint8_t *)&tunnel->ipv4.dst_ip, 35 (uint8_t *)&sa->dst.ip.ip4, 4); 36 } 37 /* TODO support for Transport and IPV6 tunnel */ 38 } 39 ipsec->esn_soft_limit = IPSEC_OFFLOAD_ESN_SOFTLIMIT; 40 } 41 42 static inline int 43 create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa) 44 { 45 struct rte_cryptodev_info cdev_info; 46 unsigned long cdev_id_qp = 0; 47 int32_t ret = 0; 48 struct cdev_key key = { 0 }; 49 50 key.lcore_id = (uint8_t)rte_lcore_id(); 51 52 key.cipher_algo = (uint8_t)sa->cipher_algo; 53 key.auth_algo = (uint8_t)sa->auth_algo; 54 key.aead_algo = (uint8_t)sa->aead_algo; 55 56 if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) { 57 ret = rte_hash_lookup_data(ipsec_ctx->cdev_map, &key, 58 (void **)&cdev_id_qp); 59 if (ret < 0) { 60 RTE_LOG(ERR, IPSEC, 61 "No cryptodev: core %u, cipher_algo %u, " 62 "auth_algo %u, aead_algo %u\n", 63 key.lcore_id, 64 key.cipher_algo, 65 key.auth_algo, 66 key.aead_algo); 67 return -1; 68 } 69 } 70 71 RTE_LOG_DP(DEBUG, IPSEC, "Create session for SA spi %u on cryptodev " 72 "%u qp %u\n", sa->spi, 73 ipsec_ctx->tbl[cdev_id_qp].id, 74 ipsec_ctx->tbl[cdev_id_qp].qp); 75 76 if (sa->type != RTE_SECURITY_ACTION_TYPE_NONE) { 77 struct rte_security_session_conf sess_conf = { 78 .action_type = sa->type, 79 .protocol = RTE_SECURITY_PROTOCOL_IPSEC, 80 {.ipsec = { 81 .spi = sa->spi, 82 .salt = sa->salt, 83 .options = { 0 }, 84 .direction = sa->direction, 85 .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP, 86 .mode = (sa->flags == IP4_TUNNEL || 87 sa->flags == IP6_TUNNEL) ? 88 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL : 89 RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT, 90 } }, 91 .crypto_xform = sa->xforms, 92 .userdata = NULL, 93 94 }; 95 96 if (sa->type == RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL) { 97 struct rte_security_ctx *ctx = (struct rte_security_ctx *) 98 rte_cryptodev_get_sec_ctx( 99 ipsec_ctx->tbl[cdev_id_qp].id); 100 101 /* Set IPsec parameters in conf */ 102 set_ipsec_conf(sa, &(sess_conf.ipsec)); 103 104 sa->sec_session = rte_security_session_create(ctx, 105 &sess_conf, ipsec_ctx->session_pool); 106 if (sa->sec_session == NULL) { 107 RTE_LOG(ERR, IPSEC, 108 "SEC Session init failed: err: %d\n", ret); 109 return -1; 110 } 111 } else if (sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) { 112 struct rte_flow_error err; 113 struct rte_security_ctx *ctx = (struct rte_security_ctx *) 114 rte_eth_dev_get_sec_ctx( 115 sa->portid); 116 const struct rte_security_capability *sec_cap; 117 int ret = 0; 118 119 sa->sec_session = rte_security_session_create(ctx, 120 &sess_conf, ipsec_ctx->session_pool); 121 if (sa->sec_session == NULL) { 122 RTE_LOG(ERR, IPSEC, 123 "SEC Session init failed: err: %d\n", ret); 124 return -1; 125 } 126 127 sec_cap = rte_security_capabilities_get(ctx); 128 129 /* iterate until ESP tunnel*/ 130 while (sec_cap->action != 131 RTE_SECURITY_ACTION_TYPE_NONE) { 132 133 if (sec_cap->action == sa->type && 134 sec_cap->protocol == 135 RTE_SECURITY_PROTOCOL_IPSEC && 136 sec_cap->ipsec.mode == 137 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL && 138 sec_cap->ipsec.direction == sa->direction) 139 break; 140 sec_cap++; 141 } 142 143 if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) { 144 RTE_LOG(ERR, IPSEC, 145 "No suitable security capability found\n"); 146 return -1; 147 } 148 149 sa->ol_flags = sec_cap->ol_flags; 150 sa->security_ctx = ctx; 151 sa->pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH; 152 153 sa->pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV4; 154 sa->pattern[1].mask = &rte_flow_item_ipv4_mask; 155 if (sa->flags & IP6_TUNNEL) { 156 sa->pattern[1].spec = &sa->ipv6_spec; 157 memcpy(sa->ipv6_spec.hdr.dst_addr, 158 sa->dst.ip.ip6.ip6_b, 16); 159 memcpy(sa->ipv6_spec.hdr.src_addr, 160 sa->src.ip.ip6.ip6_b, 16); 161 } else { 162 sa->pattern[1].spec = &sa->ipv4_spec; 163 sa->ipv4_spec.hdr.dst_addr = sa->dst.ip.ip4; 164 sa->ipv4_spec.hdr.src_addr = sa->src.ip.ip4; 165 } 166 167 sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_ESP; 168 sa->pattern[2].spec = &sa->esp_spec; 169 sa->pattern[2].mask = &rte_flow_item_esp_mask; 170 sa->esp_spec.hdr.spi = rte_cpu_to_be_32(sa->spi); 171 172 sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_END; 173 174 sa->action[0].type = RTE_FLOW_ACTION_TYPE_SECURITY; 175 sa->action[0].conf = sa->sec_session; 176 177 sa->action[1].type = RTE_FLOW_ACTION_TYPE_END; 178 179 sa->attr.egress = (sa->direction == 180 RTE_SECURITY_IPSEC_SA_DIR_EGRESS); 181 sa->attr.ingress = (sa->direction == 182 RTE_SECURITY_IPSEC_SA_DIR_INGRESS); 183 if (sa->attr.ingress) { 184 uint8_t rss_key[40]; 185 struct rte_eth_rss_conf rss_conf = { 186 .rss_key = rss_key, 187 .rss_key_len = 40, 188 }; 189 struct rte_eth_dev *eth_dev; 190 uint16_t queue[RTE_MAX_QUEUES_PER_PORT]; 191 struct rte_flow_action_rss action_rss; 192 unsigned int i; 193 unsigned int j; 194 195 sa->action[2].type = RTE_FLOW_ACTION_TYPE_END; 196 /* Try RSS. */ 197 sa->action[1].type = RTE_FLOW_ACTION_TYPE_RSS; 198 sa->action[1].conf = &action_rss; 199 eth_dev = ctx->device; 200 rte_eth_dev_rss_hash_conf_get(sa->portid, 201 &rss_conf); 202 for (i = 0, j = 0; 203 i < eth_dev->data->nb_rx_queues; ++i) 204 if (eth_dev->data->rx_queues[i]) 205 queue[j++] = i; 206 action_rss = (struct rte_flow_action_rss){ 207 .types = rss_conf.rss_hf, 208 .key_len = rss_conf.rss_key_len, 209 .queue_num = j, 210 .key = rss_key, 211 .queue = queue, 212 }; 213 ret = rte_flow_validate(sa->portid, &sa->attr, 214 sa->pattern, sa->action, 215 &err); 216 if (!ret) 217 goto flow_create; 218 /* Try Queue. */ 219 sa->action[1].type = RTE_FLOW_ACTION_TYPE_QUEUE; 220 sa->action[1].conf = 221 &(struct rte_flow_action_queue){ 222 .index = 0, 223 }; 224 ret = rte_flow_validate(sa->portid, &sa->attr, 225 sa->pattern, sa->action, 226 &err); 227 /* Try End. */ 228 sa->action[1].type = RTE_FLOW_ACTION_TYPE_END; 229 sa->action[1].conf = NULL; 230 ret = rte_flow_validate(sa->portid, &sa->attr, 231 sa->pattern, sa->action, 232 &err); 233 if (ret) 234 goto flow_create_failure; 235 } else if (sa->attr.egress && 236 (sa->ol_flags & 237 RTE_SECURITY_TX_HW_TRAILER_OFFLOAD)) { 238 sa->action[1].type = 239 RTE_FLOW_ACTION_TYPE_PASSTHRU; 240 sa->action[2].type = 241 RTE_FLOW_ACTION_TYPE_END; 242 } 243 flow_create: 244 sa->flow = rte_flow_create(sa->portid, 245 &sa->attr, sa->pattern, sa->action, &err); 246 if (sa->flow == NULL) { 247 flow_create_failure: 248 RTE_LOG(ERR, IPSEC, 249 "Failed to create ipsec flow msg: %s\n", 250 err.message); 251 return -1; 252 } 253 } else if (sa->type == 254 RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) { 255 struct rte_security_ctx *ctx = 256 (struct rte_security_ctx *) 257 rte_eth_dev_get_sec_ctx(sa->portid); 258 const struct rte_security_capability *sec_cap; 259 260 if (ctx == NULL) { 261 RTE_LOG(ERR, IPSEC, 262 "Ethernet device doesn't have security features registered\n"); 263 return -1; 264 } 265 266 /* Set IPsec parameters in conf */ 267 set_ipsec_conf(sa, &(sess_conf.ipsec)); 268 269 /* Save SA as userdata for the security session. When 270 * the packet is received, this userdata will be 271 * retrieved using the metadata from the packet. 272 * 273 * The PMD is expected to set similar metadata for other 274 * operations, like rte_eth_event, which are tied to 275 * security session. In such cases, the userdata could 276 * be obtained to uniquely identify the security 277 * parameters denoted. 278 */ 279 280 sess_conf.userdata = (void *) sa; 281 282 sa->sec_session = rte_security_session_create(ctx, 283 &sess_conf, ipsec_ctx->session_pool); 284 if (sa->sec_session == NULL) { 285 RTE_LOG(ERR, IPSEC, 286 "SEC Session init failed: err: %d\n", ret); 287 return -1; 288 } 289 290 sec_cap = rte_security_capabilities_get(ctx); 291 292 if (sec_cap == NULL) { 293 RTE_LOG(ERR, IPSEC, 294 "No capabilities registered\n"); 295 return -1; 296 } 297 298 /* iterate until ESP tunnel*/ 299 while (sec_cap->action != 300 RTE_SECURITY_ACTION_TYPE_NONE) { 301 302 if (sec_cap->action == sa->type && 303 sec_cap->protocol == 304 RTE_SECURITY_PROTOCOL_IPSEC && 305 sec_cap->ipsec.mode == 306 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL && 307 sec_cap->ipsec.direction == sa->direction) 308 break; 309 sec_cap++; 310 } 311 312 if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) { 313 RTE_LOG(ERR, IPSEC, 314 "No suitable security capability found\n"); 315 return -1; 316 } 317 318 sa->ol_flags = sec_cap->ol_flags; 319 sa->security_ctx = ctx; 320 } 321 } else { 322 sa->crypto_session = rte_cryptodev_sym_session_create( 323 ipsec_ctx->session_pool); 324 rte_cryptodev_sym_session_init(ipsec_ctx->tbl[cdev_id_qp].id, 325 sa->crypto_session, sa->xforms, 326 ipsec_ctx->session_pool); 327 328 rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id, 329 &cdev_info); 330 if (cdev_info.sym.max_nb_sessions_per_qp > 0) { 331 ret = rte_cryptodev_queue_pair_attach_sym_session( 332 ipsec_ctx->tbl[cdev_id_qp].id, 333 ipsec_ctx->tbl[cdev_id_qp].qp, 334 sa->crypto_session); 335 if (ret < 0) { 336 RTE_LOG(ERR, IPSEC, 337 "Session cannot be attached to qp %u\n", 338 ipsec_ctx->tbl[cdev_id_qp].qp); 339 return -1; 340 } 341 } 342 } 343 sa->cdev_id_qp = cdev_id_qp; 344 345 return 0; 346 } 347 348 static inline void 349 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop) 350 { 351 int32_t ret = 0, i; 352 353 cqp->buf[cqp->len++] = cop; 354 355 if (cqp->len == MAX_PKT_BURST) { 356 int enq_size = cqp->len; 357 if ((cqp->in_flight + enq_size) > MAX_INFLIGHT) 358 enq_size -= 359 (int)((cqp->in_flight + enq_size) - MAX_INFLIGHT); 360 361 if (enq_size > 0) 362 ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, 363 cqp->buf, enq_size); 364 if (ret < cqp->len) { 365 RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:" 366 " enqueued %u crypto ops out of %u\n", 367 cqp->id, cqp->qp, 368 ret, cqp->len); 369 for (i = ret; i < cqp->len; i++) 370 rte_pktmbuf_free(cqp->buf[i]->sym->m_src); 371 } 372 cqp->in_flight += ret; 373 cqp->len = 0; 374 } 375 } 376 377 static inline void 378 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 379 struct rte_mbuf *pkts[], struct ipsec_sa *sas[], 380 uint16_t nb_pkts) 381 { 382 int32_t ret = 0, i; 383 struct ipsec_mbuf_metadata *priv; 384 struct rte_crypto_sym_op *sym_cop; 385 struct ipsec_sa *sa; 386 387 for (i = 0; i < nb_pkts; i++) { 388 if (unlikely(sas[i] == NULL)) { 389 rte_pktmbuf_free(pkts[i]); 390 continue; 391 } 392 393 rte_prefetch0(sas[i]); 394 rte_prefetch0(pkts[i]); 395 396 priv = get_priv(pkts[i]); 397 sa = sas[i]; 398 priv->sa = sa; 399 400 switch (sa->type) { 401 case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL: 402 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 403 priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; 404 405 rte_prefetch0(&priv->sym_cop); 406 407 if ((unlikely(sa->sec_session == NULL)) && 408 create_session(ipsec_ctx, sa)) { 409 rte_pktmbuf_free(pkts[i]); 410 continue; 411 } 412 413 sym_cop = get_sym_cop(&priv->cop); 414 sym_cop->m_src = pkts[i]; 415 416 rte_security_attach_session(&priv->cop, 417 sa->sec_session); 418 break; 419 case RTE_SECURITY_ACTION_TYPE_NONE: 420 421 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 422 priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; 423 424 rte_prefetch0(&priv->sym_cop); 425 426 if ((unlikely(sa->crypto_session == NULL)) && 427 create_session(ipsec_ctx, sa)) { 428 rte_pktmbuf_free(pkts[i]); 429 continue; 430 } 431 432 rte_crypto_op_attach_sym_session(&priv->cop, 433 sa->crypto_session); 434 435 ret = xform_func(pkts[i], sa, &priv->cop); 436 if (unlikely(ret)) { 437 rte_pktmbuf_free(pkts[i]); 438 continue; 439 } 440 break; 441 case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL: 442 if ((unlikely(sa->sec_session == NULL)) && 443 create_session(ipsec_ctx, sa)) { 444 rte_pktmbuf_free(pkts[i]); 445 continue; 446 } 447 448 ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i]; 449 if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA) 450 rte_security_set_pkt_metadata( 451 sa->security_ctx, 452 sa->sec_session, pkts[i], NULL); 453 continue; 454 case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO: 455 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 456 priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; 457 458 rte_prefetch0(&priv->sym_cop); 459 460 if ((unlikely(sa->sec_session == NULL)) && 461 create_session(ipsec_ctx, sa)) { 462 rte_pktmbuf_free(pkts[i]); 463 continue; 464 } 465 466 rte_security_attach_session(&priv->cop, 467 sa->sec_session); 468 469 ret = xform_func(pkts[i], sa, &priv->cop); 470 if (unlikely(ret)) { 471 rte_pktmbuf_free(pkts[i]); 472 continue; 473 } 474 475 ipsec_ctx->ol_pkts[ipsec_ctx->ol_pkts_cnt++] = pkts[i]; 476 if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA) 477 rte_security_set_pkt_metadata( 478 sa->security_ctx, 479 sa->sec_session, pkts[i], NULL); 480 continue; 481 } 482 483 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps); 484 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop); 485 } 486 } 487 488 static inline int 489 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 490 struct rte_mbuf *pkts[], uint16_t max_pkts) 491 { 492 int32_t nb_pkts = 0, ret = 0, i, j, nb_cops; 493 struct ipsec_mbuf_metadata *priv; 494 struct rte_crypto_op *cops[max_pkts]; 495 struct ipsec_sa *sa; 496 struct rte_mbuf *pkt; 497 498 for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) { 499 struct cdev_qp *cqp; 500 501 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++]; 502 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps) 503 ipsec_ctx->last_qp %= ipsec_ctx->nb_qps; 504 505 while (ipsec_ctx->ol_pkts_cnt > 0 && nb_pkts < max_pkts) { 506 pkt = ipsec_ctx->ol_pkts[--ipsec_ctx->ol_pkts_cnt]; 507 rte_prefetch0(pkt); 508 priv = get_priv(pkt); 509 sa = priv->sa; 510 ret = xform_func(pkt, sa, &priv->cop); 511 if (unlikely(ret)) { 512 rte_pktmbuf_free(pkt); 513 continue; 514 } 515 pkts[nb_pkts++] = pkt; 516 } 517 518 if (cqp->in_flight == 0) 519 continue; 520 521 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp, 522 cops, max_pkts - nb_pkts); 523 524 cqp->in_flight -= nb_cops; 525 526 for (j = 0; j < nb_cops; j++) { 527 pkt = cops[j]->sym->m_src; 528 rte_prefetch0(pkt); 529 530 priv = get_priv(pkt); 531 sa = priv->sa; 532 533 RTE_ASSERT(sa != NULL); 534 535 if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) { 536 ret = xform_func(pkt, sa, cops[j]); 537 if (unlikely(ret)) { 538 rte_pktmbuf_free(pkt); 539 continue; 540 } 541 } 542 pkts[nb_pkts++] = pkt; 543 } 544 } 545 546 /* return packets */ 547 return nb_pkts; 548 } 549 550 uint16_t 551 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 552 uint16_t nb_pkts, uint16_t len) 553 { 554 struct ipsec_sa *sas[nb_pkts]; 555 556 inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts); 557 558 ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts); 559 560 return ipsec_dequeue(esp_inbound_post, ctx, pkts, len); 561 } 562 563 uint16_t 564 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 565 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len) 566 { 567 struct ipsec_sa *sas[nb_pkts]; 568 569 outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts); 570 571 ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts); 572 573 return ipsec_dequeue(esp_outbound_post, ctx, pkts, len); 574 } 575