1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2016-2017 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #include <sys/types.h> 34 #include <netinet/in.h> 35 #include <netinet/ip.h> 36 37 #include <rte_branch_prediction.h> 38 #include <rte_log.h> 39 #include <rte_crypto.h> 40 #include <rte_security.h> 41 #include <rte_cryptodev.h> 42 #include <rte_ethdev.h> 43 #include <rte_mbuf.h> 44 #include <rte_hash.h> 45 46 #include "ipsec.h" 47 #include "esp.h" 48 49 static inline int 50 create_session(struct ipsec_ctx *ipsec_ctx, struct ipsec_sa *sa) 51 { 52 struct rte_cryptodev_info cdev_info; 53 unsigned long cdev_id_qp = 0; 54 int32_t ret = 0; 55 struct cdev_key key = { 0 }; 56 57 key.lcore_id = (uint8_t)rte_lcore_id(); 58 59 key.cipher_algo = (uint8_t)sa->cipher_algo; 60 key.auth_algo = (uint8_t)sa->auth_algo; 61 key.aead_algo = (uint8_t)sa->aead_algo; 62 63 if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) { 64 ret = rte_hash_lookup_data(ipsec_ctx->cdev_map, &key, 65 (void **)&cdev_id_qp); 66 if (ret < 0) { 67 RTE_LOG(ERR, IPSEC, 68 "No cryptodev: core %u, cipher_algo %u, " 69 "auth_algo %u, aead_algo %u\n", 70 key.lcore_id, 71 key.cipher_algo, 72 key.auth_algo, 73 key.aead_algo); 74 return -1; 75 } 76 } 77 78 RTE_LOG_DP(DEBUG, IPSEC, "Create session for SA spi %u on cryptodev " 79 "%u qp %u\n", sa->spi, 80 ipsec_ctx->tbl[cdev_id_qp].id, 81 ipsec_ctx->tbl[cdev_id_qp].qp); 82 83 if (sa->type != RTE_SECURITY_ACTION_TYPE_NONE) { 84 struct rte_security_session_conf sess_conf = { 85 .action_type = sa->type, 86 .protocol = RTE_SECURITY_PROTOCOL_IPSEC, 87 .ipsec = { 88 .spi = sa->spi, 89 .salt = sa->salt, 90 .options = { 0 }, 91 .direction = sa->direction, 92 .proto = RTE_SECURITY_IPSEC_SA_PROTO_ESP, 93 .mode = (sa->flags == IP4_TUNNEL || 94 sa->flags == IP6_TUNNEL) ? 95 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL : 96 RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT, 97 }, 98 .crypto_xform = sa->xforms 99 100 }; 101 102 if (sa->type == RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL) { 103 struct rte_security_ctx *ctx = (struct rte_security_ctx *) 104 rte_cryptodev_get_sec_ctx( 105 ipsec_ctx->tbl[cdev_id_qp].id); 106 107 if (sess_conf.ipsec.mode == 108 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL) { 109 struct rte_security_ipsec_tunnel_param *tunnel = 110 &sess_conf.ipsec.tunnel; 111 if (sa->flags == IP4_TUNNEL) { 112 tunnel->type = 113 RTE_SECURITY_IPSEC_TUNNEL_IPV4; 114 tunnel->ipv4.ttl = IPDEFTTL; 115 116 memcpy((uint8_t *)&tunnel->ipv4.src_ip, 117 (uint8_t *)&sa->src.ip.ip4, 4); 118 119 memcpy((uint8_t *)&tunnel->ipv4.dst_ip, 120 (uint8_t *)&sa->dst.ip.ip4, 4); 121 } 122 /* TODO support for Transport and IPV6 tunnel */ 123 } 124 125 sa->sec_session = rte_security_session_create(ctx, 126 &sess_conf, ipsec_ctx->session_pool); 127 if (sa->sec_session == NULL) { 128 RTE_LOG(ERR, IPSEC, 129 "SEC Session init failed: err: %d\n", ret); 130 return -1; 131 } 132 } else if (sa->type == RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO) { 133 struct rte_flow_error err; 134 struct rte_security_ctx *ctx = (struct rte_security_ctx *) 135 rte_eth_dev_get_sec_ctx( 136 sa->portid); 137 const struct rte_security_capability *sec_cap; 138 139 sa->sec_session = rte_security_session_create(ctx, 140 &sess_conf, ipsec_ctx->session_pool); 141 if (sa->sec_session == NULL) { 142 RTE_LOG(ERR, IPSEC, 143 "SEC Session init failed: err: %d\n", ret); 144 return -1; 145 } 146 147 sec_cap = rte_security_capabilities_get(ctx); 148 149 /* iterate until ESP tunnel*/ 150 while (sec_cap->action != 151 RTE_SECURITY_ACTION_TYPE_NONE) { 152 153 if (sec_cap->action == sa->type && 154 sec_cap->protocol == 155 RTE_SECURITY_PROTOCOL_IPSEC && 156 sec_cap->ipsec.mode == 157 RTE_SECURITY_IPSEC_SA_MODE_TUNNEL && 158 sec_cap->ipsec.direction == sa->direction) 159 break; 160 sec_cap++; 161 } 162 163 if (sec_cap->action == RTE_SECURITY_ACTION_TYPE_NONE) { 164 RTE_LOG(ERR, IPSEC, 165 "No suitable security capability found\n"); 166 return -1; 167 } 168 169 sa->ol_flags = sec_cap->ol_flags; 170 sa->security_ctx = ctx; 171 sa->pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH; 172 173 sa->pattern[1].type = RTE_FLOW_ITEM_TYPE_IPV4; 174 sa->pattern[1].mask = &rte_flow_item_ipv4_mask; 175 if (sa->flags & IP6_TUNNEL) { 176 sa->pattern[1].spec = &sa->ipv6_spec; 177 memcpy(sa->ipv6_spec.hdr.dst_addr, 178 sa->dst.ip.ip6.ip6_b, 16); 179 memcpy(sa->ipv6_spec.hdr.src_addr, 180 sa->src.ip.ip6.ip6_b, 16); 181 } else { 182 sa->pattern[1].spec = &sa->ipv4_spec; 183 sa->ipv4_spec.hdr.dst_addr = sa->dst.ip.ip4; 184 sa->ipv4_spec.hdr.src_addr = sa->src.ip.ip4; 185 } 186 187 sa->pattern[2].type = RTE_FLOW_ITEM_TYPE_ESP; 188 sa->pattern[2].spec = &sa->esp_spec; 189 sa->pattern[2].mask = &rte_flow_item_esp_mask; 190 sa->esp_spec.hdr.spi = sa->spi; 191 192 sa->pattern[3].type = RTE_FLOW_ITEM_TYPE_END; 193 194 sa->action[0].type = RTE_FLOW_ACTION_TYPE_SECURITY; 195 sa->action[0].conf = sa->sec_session; 196 197 sa->action[1].type = RTE_FLOW_ACTION_TYPE_END; 198 199 sa->attr.egress = (sa->direction == 200 RTE_SECURITY_IPSEC_SA_DIR_EGRESS); 201 sa->flow = rte_flow_create(sa->portid, 202 &sa->attr, sa->pattern, sa->action, &err); 203 if (sa->flow == NULL) { 204 RTE_LOG(ERR, IPSEC, 205 "Failed to create ipsec flow msg: %s\n", 206 err.message); 207 return -1; 208 } 209 } 210 } else { 211 sa->crypto_session = rte_cryptodev_sym_session_create( 212 ipsec_ctx->session_pool); 213 rte_cryptodev_sym_session_init(ipsec_ctx->tbl[cdev_id_qp].id, 214 sa->crypto_session, sa->xforms, 215 ipsec_ctx->session_pool); 216 217 rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id, 218 &cdev_info); 219 if (cdev_info.sym.max_nb_sessions_per_qp > 0) { 220 ret = rte_cryptodev_queue_pair_attach_sym_session( 221 ipsec_ctx->tbl[cdev_id_qp].id, 222 ipsec_ctx->tbl[cdev_id_qp].qp, 223 sa->crypto_session); 224 if (ret < 0) { 225 RTE_LOG(ERR, IPSEC, 226 "Session cannot be attached to qp %u\n", 227 ipsec_ctx->tbl[cdev_id_qp].qp); 228 return -1; 229 } 230 } 231 } 232 sa->cdev_id_qp = cdev_id_qp; 233 234 return 0; 235 } 236 237 static inline void 238 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop) 239 { 240 int32_t ret, i; 241 242 cqp->buf[cqp->len++] = cop; 243 244 if (cqp->len == MAX_PKT_BURST) { 245 ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, 246 cqp->buf, cqp->len); 247 if (ret < cqp->len) { 248 RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:" 249 " enqueued %u crypto ops out of %u\n", 250 cqp->id, cqp->qp, 251 ret, cqp->len); 252 for (i = ret; i < cqp->len; i++) 253 rte_pktmbuf_free(cqp->buf[i]->sym->m_src); 254 } 255 cqp->in_flight += ret; 256 cqp->len = 0; 257 } 258 } 259 260 static inline void 261 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 262 struct rte_mbuf *pkts[], struct ipsec_sa *sas[], 263 uint16_t nb_pkts) 264 { 265 int32_t ret = 0, i; 266 struct ipsec_mbuf_metadata *priv; 267 struct rte_crypto_sym_op *sym_cop; 268 struct ipsec_sa *sa; 269 struct cdev_qp *cqp; 270 271 for (i = 0; i < nb_pkts; i++) { 272 if (unlikely(sas[i] == NULL)) { 273 rte_pktmbuf_free(pkts[i]); 274 continue; 275 } 276 277 rte_prefetch0(sas[i]); 278 rte_prefetch0(pkts[i]); 279 280 priv = get_priv(pkts[i]); 281 sa = sas[i]; 282 priv->sa = sa; 283 284 switch (sa->type) { 285 case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL: 286 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 287 priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; 288 289 rte_prefetch0(&priv->sym_cop); 290 291 if ((unlikely(sa->sec_session == NULL)) && 292 create_session(ipsec_ctx, sa)) { 293 rte_pktmbuf_free(pkts[i]); 294 continue; 295 } 296 297 sym_cop = get_sym_cop(&priv->cop); 298 sym_cop->m_src = pkts[i]; 299 300 rte_security_attach_session(&priv->cop, 301 sa->sec_session); 302 break; 303 case RTE_SECURITY_ACTION_TYPE_NONE: 304 305 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 306 priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; 307 308 rte_prefetch0(&priv->sym_cop); 309 310 if ((unlikely(sa->crypto_session == NULL)) && 311 create_session(ipsec_ctx, sa)) { 312 rte_pktmbuf_free(pkts[i]); 313 continue; 314 } 315 316 rte_crypto_op_attach_sym_session(&priv->cop, 317 sa->crypto_session); 318 319 ret = xform_func(pkts[i], sa, &priv->cop); 320 if (unlikely(ret)) { 321 rte_pktmbuf_free(pkts[i]); 322 continue; 323 } 324 break; 325 case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL: 326 break; 327 case RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO: 328 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 329 priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; 330 331 rte_prefetch0(&priv->sym_cop); 332 333 if ((unlikely(sa->sec_session == NULL)) && 334 create_session(ipsec_ctx, sa)) { 335 rte_pktmbuf_free(pkts[i]); 336 continue; 337 } 338 339 rte_security_attach_session(&priv->cop, 340 sa->sec_session); 341 342 ret = xform_func(pkts[i], sa, &priv->cop); 343 if (unlikely(ret)) { 344 rte_pktmbuf_free(pkts[i]); 345 continue; 346 } 347 348 cqp = &ipsec_ctx->tbl[sa->cdev_id_qp]; 349 cqp->ol_pkts[cqp->ol_pkts_cnt++] = pkts[i]; 350 if (sa->ol_flags & RTE_SECURITY_TX_OLOAD_NEED_MDATA) 351 rte_security_set_pkt_metadata( 352 sa->security_ctx, 353 sa->sec_session, pkts[i], NULL); 354 continue; 355 } 356 357 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps); 358 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop); 359 } 360 } 361 362 static inline int 363 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 364 struct rte_mbuf *pkts[], uint16_t max_pkts) 365 { 366 int32_t nb_pkts = 0, ret = 0, i, j, nb_cops; 367 struct ipsec_mbuf_metadata *priv; 368 struct rte_crypto_op *cops[max_pkts]; 369 struct ipsec_sa *sa; 370 struct rte_mbuf *pkt; 371 372 for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) { 373 struct cdev_qp *cqp; 374 375 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++]; 376 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps) 377 ipsec_ctx->last_qp %= ipsec_ctx->nb_qps; 378 379 while (cqp->ol_pkts_cnt > 0 && nb_pkts < max_pkts) { 380 pkt = cqp->ol_pkts[--cqp->ol_pkts_cnt]; 381 rte_prefetch0(pkt); 382 priv = get_priv(pkt); 383 sa = priv->sa; 384 ret = xform_func(pkt, sa, &priv->cop); 385 if (unlikely(ret)) { 386 rte_pktmbuf_free(pkt); 387 continue; 388 } 389 pkts[nb_pkts++] = pkt; 390 } 391 392 if (cqp->in_flight == 0) 393 continue; 394 395 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp, 396 cops, max_pkts - nb_pkts); 397 398 cqp->in_flight -= nb_cops; 399 400 for (j = 0; j < nb_cops; j++) { 401 pkt = cops[j]->sym->m_src; 402 rte_prefetch0(pkt); 403 404 priv = get_priv(pkt); 405 sa = priv->sa; 406 407 RTE_ASSERT(sa != NULL); 408 409 if (sa->type == RTE_SECURITY_ACTION_TYPE_NONE) { 410 ret = xform_func(pkt, sa, cops[j]); 411 if (unlikely(ret)) { 412 rte_pktmbuf_free(pkt); 413 continue; 414 } 415 } 416 pkts[nb_pkts++] = pkt; 417 } 418 } 419 420 /* return packets */ 421 return nb_pkts; 422 } 423 424 uint16_t 425 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 426 uint16_t nb_pkts, uint16_t len) 427 { 428 struct ipsec_sa *sas[nb_pkts]; 429 430 inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts); 431 432 ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts); 433 434 return ipsec_dequeue(esp_inbound_post, ctx, pkts, len); 435 } 436 437 uint16_t 438 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 439 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len) 440 { 441 struct ipsec_sa *sas[nb_pkts]; 442 443 outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts); 444 445 ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts); 446 447 return ipsec_dequeue(esp_outbound_post, ctx, pkts, len); 448 } 449