1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2017-2018 Intel Corporation 3 */ 4 #include <rte_malloc.h> 5 #include <rte_hash.h> 6 #include <rte_jhash.h> 7 #include <rte_mbuf.h> 8 #include <rte_cryptodev.h> 9 10 #include "rte_vhost_crypto.h" 11 #include "vhost.h" 12 #include "vhost_user.h" 13 #include "virtio_crypto.h" 14 15 #define INHDR_LEN (sizeof(struct virtio_crypto_inhdr)) 16 #define IV_OFFSET (sizeof(struct rte_crypto_op) + \ 17 sizeof(struct rte_crypto_sym_op)) 18 19 #ifdef RTE_LIBRTE_VHOST_DEBUG 20 #define VC_LOG_ERR(fmt, args...) \ 21 RTE_LOG(ERR, USER1, "[%s] %s() line %u: " fmt "\n", \ 22 "Vhost-Crypto", __func__, __LINE__, ## args) 23 #define VC_LOG_INFO(fmt, args...) \ 24 RTE_LOG(INFO, USER1, "[%s] %s() line %u: " fmt "\n", \ 25 "Vhost-Crypto", __func__, __LINE__, ## args) 26 27 #define VC_LOG_DBG(fmt, args...) \ 28 RTE_LOG(DEBUG, USER1, "[%s] %s() line %u: " fmt "\n", \ 29 "Vhost-Crypto", __func__, __LINE__, ## args) 30 #else 31 #define VC_LOG_ERR(fmt, args...) \ 32 RTE_LOG(ERR, USER1, "[VHOST-Crypto]: " fmt "\n", ## args) 33 #define VC_LOG_INFO(fmt, args...) \ 34 RTE_LOG(INFO, USER1, "[VHOST-Crypto]: " fmt "\n", ## args) 35 #define VC_LOG_DBG(fmt, args...) 36 #endif 37 38 #define VIRTIO_CRYPTO_FEATURES ((1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) | \ 39 (1ULL << VIRTIO_RING_F_INDIRECT_DESC) | \ 40 (1ULL << VIRTIO_RING_F_EVENT_IDX) | \ 41 (1ULL << VIRTIO_NET_F_CTRL_VQ) | \ 42 (1ULL << VIRTIO_F_VERSION_1) | \ 43 (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)) 44 45 #define IOVA_TO_VVA(t, r, a, l, p) \ 46 ((t)(uintptr_t)vhost_iova_to_vva(r->dev, r->vq, a, l, p)) 47 48 /* 49 * vhost_crypto_desc is used to copy original vring_desc to the local buffer 50 * before processing (except the next index). The copy result will be an 51 * array of vhost_crypto_desc elements that follows the sequence of original 52 * vring_desc.next is arranged. 53 */ 54 #define vhost_crypto_desc vring_desc 55 56 static int 57 cipher_algo_transform(uint32_t virtio_cipher_algo, 58 enum rte_crypto_cipher_algorithm *algo) 59 { 60 switch (virtio_cipher_algo) { 61 case VIRTIO_CRYPTO_CIPHER_AES_CBC: 62 *algo = RTE_CRYPTO_CIPHER_AES_CBC; 63 break; 64 case VIRTIO_CRYPTO_CIPHER_AES_CTR: 65 *algo = RTE_CRYPTO_CIPHER_AES_CTR; 66 break; 67 case VIRTIO_CRYPTO_CIPHER_DES_ECB: 68 *algo = -VIRTIO_CRYPTO_NOTSUPP; 69 break; 70 case VIRTIO_CRYPTO_CIPHER_DES_CBC: 71 *algo = RTE_CRYPTO_CIPHER_DES_CBC; 72 break; 73 case VIRTIO_CRYPTO_CIPHER_3DES_ECB: 74 *algo = RTE_CRYPTO_CIPHER_3DES_ECB; 75 break; 76 case VIRTIO_CRYPTO_CIPHER_3DES_CBC: 77 *algo = RTE_CRYPTO_CIPHER_3DES_CBC; 78 break; 79 case VIRTIO_CRYPTO_CIPHER_3DES_CTR: 80 *algo = RTE_CRYPTO_CIPHER_3DES_CTR; 81 break; 82 case VIRTIO_CRYPTO_CIPHER_KASUMI_F8: 83 *algo = RTE_CRYPTO_CIPHER_KASUMI_F8; 84 break; 85 case VIRTIO_CRYPTO_CIPHER_SNOW3G_UEA2: 86 *algo = RTE_CRYPTO_CIPHER_SNOW3G_UEA2; 87 break; 88 case VIRTIO_CRYPTO_CIPHER_AES_F8: 89 *algo = RTE_CRYPTO_CIPHER_AES_F8; 90 break; 91 case VIRTIO_CRYPTO_CIPHER_AES_XTS: 92 *algo = RTE_CRYPTO_CIPHER_AES_XTS; 93 break; 94 case VIRTIO_CRYPTO_CIPHER_ZUC_EEA3: 95 *algo = RTE_CRYPTO_CIPHER_ZUC_EEA3; 96 break; 97 default: 98 return -VIRTIO_CRYPTO_BADMSG; 99 break; 100 } 101 102 return 0; 103 } 104 105 static int 106 auth_algo_transform(uint32_t virtio_auth_algo, 107 enum rte_crypto_auth_algorithm *algo) 108 { 109 switch (virtio_auth_algo) { 110 case VIRTIO_CRYPTO_NO_MAC: 111 *algo = RTE_CRYPTO_AUTH_NULL; 112 break; 113 case VIRTIO_CRYPTO_MAC_HMAC_MD5: 114 *algo = RTE_CRYPTO_AUTH_MD5_HMAC; 115 break; 116 case VIRTIO_CRYPTO_MAC_HMAC_SHA1: 117 *algo = RTE_CRYPTO_AUTH_SHA1_HMAC; 118 break; 119 case VIRTIO_CRYPTO_MAC_HMAC_SHA_224: 120 *algo = RTE_CRYPTO_AUTH_SHA224_HMAC; 121 break; 122 case VIRTIO_CRYPTO_MAC_HMAC_SHA_256: 123 *algo = RTE_CRYPTO_AUTH_SHA256_HMAC; 124 break; 125 case VIRTIO_CRYPTO_MAC_HMAC_SHA_384: 126 *algo = RTE_CRYPTO_AUTH_SHA384_HMAC; 127 break; 128 case VIRTIO_CRYPTO_MAC_HMAC_SHA_512: 129 *algo = RTE_CRYPTO_AUTH_SHA512_HMAC; 130 break; 131 case VIRTIO_CRYPTO_MAC_CMAC_AES: 132 *algo = RTE_CRYPTO_AUTH_AES_CMAC; 133 break; 134 case VIRTIO_CRYPTO_MAC_KASUMI_F9: 135 *algo = RTE_CRYPTO_AUTH_KASUMI_F9; 136 break; 137 case VIRTIO_CRYPTO_MAC_SNOW3G_UIA2: 138 *algo = RTE_CRYPTO_AUTH_SNOW3G_UIA2; 139 break; 140 case VIRTIO_CRYPTO_MAC_GMAC_AES: 141 *algo = RTE_CRYPTO_AUTH_AES_GMAC; 142 break; 143 case VIRTIO_CRYPTO_MAC_CBCMAC_AES: 144 *algo = RTE_CRYPTO_AUTH_AES_CBC_MAC; 145 break; 146 case VIRTIO_CRYPTO_MAC_XCBC_AES: 147 *algo = RTE_CRYPTO_AUTH_AES_XCBC_MAC; 148 break; 149 case VIRTIO_CRYPTO_MAC_CMAC_3DES: 150 case VIRTIO_CRYPTO_MAC_GMAC_TWOFISH: 151 case VIRTIO_CRYPTO_MAC_CBCMAC_KASUMI_F9: 152 return -VIRTIO_CRYPTO_NOTSUPP; 153 default: 154 return -VIRTIO_CRYPTO_BADMSG; 155 } 156 157 return 0; 158 } 159 160 static int get_iv_len(enum rte_crypto_cipher_algorithm algo) 161 { 162 int len; 163 164 switch (algo) { 165 case RTE_CRYPTO_CIPHER_3DES_CBC: 166 len = 8; 167 break; 168 case RTE_CRYPTO_CIPHER_3DES_CTR: 169 len = 8; 170 break; 171 case RTE_CRYPTO_CIPHER_3DES_ECB: 172 len = 8; 173 break; 174 case RTE_CRYPTO_CIPHER_AES_CBC: 175 len = 16; 176 break; 177 178 /* TODO: add common algos */ 179 180 default: 181 len = -1; 182 break; 183 } 184 185 return len; 186 } 187 188 /** 189 * vhost_crypto struct is used to maintain a number of virtio_cryptos and 190 * one DPDK crypto device that deals with all crypto workloads. It is declared 191 * here and defined in vhost_crypto.c 192 */ 193 struct vhost_crypto { 194 /** Used to lookup DPDK Cryptodev Session based on VIRTIO crypto 195 * session ID. 196 */ 197 struct rte_hash *session_map; 198 struct rte_mempool *mbuf_pool; 199 struct rte_mempool *sess_pool; 200 struct rte_mempool *sess_priv_pool; 201 struct rte_mempool *wb_pool; 202 203 /** DPDK cryptodev ID */ 204 uint8_t cid; 205 uint16_t nb_qps; 206 207 uint64_t last_session_id; 208 209 uint64_t cache_session_id; 210 struct rte_cryptodev_sym_session *cache_session; 211 /** socket id for the device */ 212 int socket_id; 213 214 struct virtio_net *dev; 215 216 uint8_t option; 217 } __rte_cache_aligned; 218 219 struct vhost_crypto_writeback_data { 220 uint8_t *src; 221 uint8_t *dst; 222 uint64_t len; 223 struct vhost_crypto_writeback_data *next; 224 }; 225 226 struct vhost_crypto_data_req { 227 struct vring_desc *head; 228 struct virtio_net *dev; 229 struct virtio_crypto_inhdr *inhdr; 230 struct vhost_virtqueue *vq; 231 struct vhost_crypto_writeback_data *wb; 232 struct rte_mempool *wb_pool; 233 uint16_t desc_idx; 234 uint16_t len; 235 uint16_t zero_copy; 236 }; 237 238 static int 239 transform_cipher_param(struct rte_crypto_sym_xform *xform, 240 VhostUserCryptoSessionParam *param) 241 { 242 int ret; 243 244 ret = cipher_algo_transform(param->cipher_algo, &xform->cipher.algo); 245 if (unlikely(ret < 0)) 246 return ret; 247 248 if (param->cipher_key_len > VHOST_USER_CRYPTO_MAX_CIPHER_KEY_LENGTH) { 249 VC_LOG_DBG("Invalid cipher key length\n"); 250 return -VIRTIO_CRYPTO_BADMSG; 251 } 252 253 xform->type = RTE_CRYPTO_SYM_XFORM_CIPHER; 254 xform->cipher.key.length = param->cipher_key_len; 255 if (xform->cipher.key.length > 0) 256 xform->cipher.key.data = param->cipher_key_buf; 257 if (param->dir == VIRTIO_CRYPTO_OP_ENCRYPT) 258 xform->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT; 259 else if (param->dir == VIRTIO_CRYPTO_OP_DECRYPT) 260 xform->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT; 261 else { 262 VC_LOG_DBG("Bad operation type"); 263 return -VIRTIO_CRYPTO_BADMSG; 264 } 265 266 ret = get_iv_len(xform->cipher.algo); 267 if (unlikely(ret < 0)) 268 return ret; 269 xform->cipher.iv.length = (uint16_t)ret; 270 xform->cipher.iv.offset = IV_OFFSET; 271 return 0; 272 } 273 274 static int 275 transform_chain_param(struct rte_crypto_sym_xform *xforms, 276 VhostUserCryptoSessionParam *param) 277 { 278 struct rte_crypto_sym_xform *xform_cipher, *xform_auth; 279 int ret; 280 281 switch (param->chaining_dir) { 282 case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER: 283 xform_auth = xforms; 284 xform_cipher = xforms->next; 285 xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_DECRYPT; 286 xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_VERIFY; 287 break; 288 case VIRTIO_CRYPTO_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH: 289 xform_cipher = xforms; 290 xform_auth = xforms->next; 291 xform_cipher->cipher.op = RTE_CRYPTO_CIPHER_OP_ENCRYPT; 292 xform_auth->auth.op = RTE_CRYPTO_AUTH_OP_GENERATE; 293 break; 294 default: 295 return -VIRTIO_CRYPTO_BADMSG; 296 } 297 298 /* cipher */ 299 ret = cipher_algo_transform(param->cipher_algo, 300 &xform_cipher->cipher.algo); 301 if (unlikely(ret < 0)) 302 return ret; 303 304 if (param->cipher_key_len > VHOST_USER_CRYPTO_MAX_CIPHER_KEY_LENGTH) { 305 VC_LOG_DBG("Invalid cipher key length\n"); 306 return -VIRTIO_CRYPTO_BADMSG; 307 } 308 309 xform_cipher->type = RTE_CRYPTO_SYM_XFORM_CIPHER; 310 xform_cipher->cipher.key.length = param->cipher_key_len; 311 xform_cipher->cipher.key.data = param->cipher_key_buf; 312 ret = get_iv_len(xform_cipher->cipher.algo); 313 if (unlikely(ret < 0)) 314 return ret; 315 xform_cipher->cipher.iv.length = (uint16_t)ret; 316 xform_cipher->cipher.iv.offset = IV_OFFSET; 317 318 /* auth */ 319 xform_auth->type = RTE_CRYPTO_SYM_XFORM_AUTH; 320 ret = auth_algo_transform(param->hash_algo, &xform_auth->auth.algo); 321 if (unlikely(ret < 0)) 322 return ret; 323 324 if (param->auth_key_len > VHOST_USER_CRYPTO_MAX_HMAC_KEY_LENGTH) { 325 VC_LOG_DBG("Invalid auth key length\n"); 326 return -VIRTIO_CRYPTO_BADMSG; 327 } 328 329 xform_auth->auth.digest_length = param->digest_len; 330 xform_auth->auth.key.length = param->auth_key_len; 331 xform_auth->auth.key.data = param->auth_key_buf; 332 333 return 0; 334 } 335 336 static void 337 vhost_crypto_create_sess(struct vhost_crypto *vcrypto, 338 VhostUserCryptoSessionParam *sess_param) 339 { 340 struct rte_crypto_sym_xform xform1 = {0}, xform2 = {0}; 341 struct rte_cryptodev_sym_session *session; 342 int ret; 343 344 switch (sess_param->op_type) { 345 case VIRTIO_CRYPTO_SYM_OP_NONE: 346 case VIRTIO_CRYPTO_SYM_OP_CIPHER: 347 ret = transform_cipher_param(&xform1, sess_param); 348 if (unlikely(ret)) { 349 VC_LOG_ERR("Error transform session msg (%i)", ret); 350 sess_param->session_id = ret; 351 return; 352 } 353 break; 354 case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING: 355 if (unlikely(sess_param->hash_mode != 356 VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH)) { 357 sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP; 358 VC_LOG_ERR("Error transform session message (%i)", 359 -VIRTIO_CRYPTO_NOTSUPP); 360 return; 361 } 362 363 xform1.next = &xform2; 364 365 ret = transform_chain_param(&xform1, sess_param); 366 if (unlikely(ret)) { 367 VC_LOG_ERR("Error transform session message (%i)", ret); 368 sess_param->session_id = ret; 369 return; 370 } 371 372 break; 373 default: 374 VC_LOG_ERR("Algorithm not yet supported"); 375 sess_param->session_id = -VIRTIO_CRYPTO_NOTSUPP; 376 return; 377 } 378 379 session = rte_cryptodev_sym_session_create(vcrypto->sess_pool); 380 if (!session) { 381 VC_LOG_ERR("Failed to create session"); 382 sess_param->session_id = -VIRTIO_CRYPTO_ERR; 383 return; 384 } 385 386 if (rte_cryptodev_sym_session_init(vcrypto->cid, session, &xform1, 387 vcrypto->sess_priv_pool) < 0) { 388 VC_LOG_ERR("Failed to initialize session"); 389 sess_param->session_id = -VIRTIO_CRYPTO_ERR; 390 return; 391 } 392 393 /* insert hash to map */ 394 if (rte_hash_add_key_data(vcrypto->session_map, 395 &vcrypto->last_session_id, session) < 0) { 396 VC_LOG_ERR("Failed to insert session to hash table"); 397 398 if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0) 399 VC_LOG_ERR("Failed to clear session"); 400 else { 401 if (rte_cryptodev_sym_session_free(session) < 0) 402 VC_LOG_ERR("Failed to free session"); 403 } 404 sess_param->session_id = -VIRTIO_CRYPTO_ERR; 405 return; 406 } 407 408 VC_LOG_INFO("Session %"PRIu64" created for vdev %i.", 409 vcrypto->last_session_id, vcrypto->dev->vid); 410 411 sess_param->session_id = vcrypto->last_session_id; 412 vcrypto->last_session_id++; 413 } 414 415 static int 416 vhost_crypto_close_sess(struct vhost_crypto *vcrypto, uint64_t session_id) 417 { 418 struct rte_cryptodev_sym_session *session; 419 uint64_t sess_id = session_id; 420 int ret; 421 422 ret = rte_hash_lookup_data(vcrypto->session_map, &sess_id, 423 (void **)&session); 424 425 if (unlikely(ret < 0)) { 426 VC_LOG_ERR("Failed to delete session %"PRIu64".", session_id); 427 return -VIRTIO_CRYPTO_INVSESS; 428 } 429 430 if (rte_cryptodev_sym_session_clear(vcrypto->cid, session) < 0) { 431 VC_LOG_DBG("Failed to clear session"); 432 return -VIRTIO_CRYPTO_ERR; 433 } 434 435 if (rte_cryptodev_sym_session_free(session) < 0) { 436 VC_LOG_DBG("Failed to free session"); 437 return -VIRTIO_CRYPTO_ERR; 438 } 439 440 if (rte_hash_del_key(vcrypto->session_map, &sess_id) < 0) { 441 VC_LOG_DBG("Failed to delete session from hash table."); 442 return -VIRTIO_CRYPTO_ERR; 443 } 444 445 VC_LOG_INFO("Session %"PRIu64" deleted for vdev %i.", sess_id, 446 vcrypto->dev->vid); 447 448 return 0; 449 } 450 451 static enum rte_vhost_msg_result 452 vhost_crypto_msg_post_handler(int vid, void *msg) 453 { 454 struct virtio_net *dev = get_device(vid); 455 struct vhost_crypto *vcrypto; 456 struct vhu_msg_context *ctx = msg; 457 enum rte_vhost_msg_result ret = RTE_VHOST_MSG_RESULT_OK; 458 459 if (dev == NULL) { 460 VC_LOG_ERR("Invalid vid %i", vid); 461 return RTE_VHOST_MSG_RESULT_ERR; 462 } 463 464 vcrypto = dev->extern_data; 465 if (vcrypto == NULL) { 466 VC_LOG_ERR("Cannot find required data, is it initialized?"); 467 return RTE_VHOST_MSG_RESULT_ERR; 468 } 469 470 switch (ctx->msg.request.master) { 471 case VHOST_USER_CRYPTO_CREATE_SESS: 472 vhost_crypto_create_sess(vcrypto, 473 &ctx->msg.payload.crypto_session); 474 ctx->fd_num = 0; 475 ret = RTE_VHOST_MSG_RESULT_REPLY; 476 break; 477 case VHOST_USER_CRYPTO_CLOSE_SESS: 478 if (vhost_crypto_close_sess(vcrypto, ctx->msg.payload.u64)) 479 ret = RTE_VHOST_MSG_RESULT_ERR; 480 break; 481 default: 482 ret = RTE_VHOST_MSG_RESULT_NOT_HANDLED; 483 break; 484 } 485 486 return ret; 487 } 488 489 static __rte_always_inline struct vhost_crypto_desc * 490 find_write_desc(struct vhost_crypto_desc *head, struct vhost_crypto_desc *desc, 491 uint32_t max_n_descs) 492 { 493 if (desc < head) 494 return NULL; 495 496 while (desc - head < (int)max_n_descs) { 497 if (desc->flags & VRING_DESC_F_WRITE) 498 return desc; 499 desc++; 500 } 501 502 return NULL; 503 } 504 505 static __rte_always_inline struct virtio_crypto_inhdr * 506 reach_inhdr(struct vhost_crypto_data_req *vc_req, 507 struct vhost_crypto_desc *head, 508 uint32_t max_n_descs) 509 { 510 struct virtio_crypto_inhdr *inhdr; 511 struct vhost_crypto_desc *last = head + (max_n_descs - 1); 512 uint64_t dlen = last->len; 513 514 if (unlikely(dlen != sizeof(*inhdr))) 515 return NULL; 516 517 inhdr = IOVA_TO_VVA(struct virtio_crypto_inhdr *, vc_req, last->addr, 518 &dlen, VHOST_ACCESS_WO); 519 if (unlikely(!inhdr || dlen != last->len)) 520 return NULL; 521 522 return inhdr; 523 } 524 525 static __rte_always_inline int 526 move_desc(struct vhost_crypto_desc *head, 527 struct vhost_crypto_desc **cur_desc, 528 uint32_t size, uint32_t max_n_descs) 529 { 530 struct vhost_crypto_desc *desc = *cur_desc; 531 int left = size - desc->len; 532 533 while (desc->flags & VRING_DESC_F_NEXT && left > 0 && 534 desc >= head && 535 desc - head < (int)max_n_descs) { 536 desc++; 537 left -= desc->len; 538 } 539 540 if (unlikely(left > 0)) 541 return -1; 542 543 if (unlikely(head - desc == (int)max_n_descs)) 544 *cur_desc = NULL; 545 else 546 *cur_desc = desc + 1; 547 548 return 0; 549 } 550 551 static __rte_always_inline void * 552 get_data_ptr(struct vhost_crypto_data_req *vc_req, 553 struct vhost_crypto_desc *cur_desc, 554 uint8_t perm) 555 { 556 void *data; 557 uint64_t dlen = cur_desc->len; 558 559 data = IOVA_TO_VVA(void *, vc_req, cur_desc->addr, &dlen, perm); 560 if (unlikely(!data || dlen != cur_desc->len)) { 561 VC_LOG_ERR("Failed to map object"); 562 return NULL; 563 } 564 565 return data; 566 } 567 568 static __rte_always_inline uint32_t 569 copy_data_from_desc(void *dst, struct vhost_crypto_data_req *vc_req, 570 struct vhost_crypto_desc *desc, uint32_t size) 571 { 572 uint64_t remain; 573 uint64_t addr; 574 575 remain = RTE_MIN(desc->len, size); 576 addr = desc->addr; 577 do { 578 uint64_t len; 579 void *src; 580 581 len = remain; 582 src = IOVA_TO_VVA(void *, vc_req, addr, &len, VHOST_ACCESS_RO); 583 if (unlikely(src == NULL || len == 0)) 584 return 0; 585 586 rte_memcpy(dst, src, len); 587 remain -= len; 588 /* cast is needed for 32-bit architecture */ 589 dst = RTE_PTR_ADD(dst, (size_t)len); 590 addr += len; 591 } while (unlikely(remain != 0)); 592 593 return RTE_MIN(desc->len, size); 594 } 595 596 597 static __rte_always_inline int 598 copy_data(void *data, struct vhost_crypto_data_req *vc_req, 599 struct vhost_crypto_desc *head, struct vhost_crypto_desc **cur_desc, 600 uint32_t size, uint32_t max_n_descs) 601 { 602 struct vhost_crypto_desc *desc = *cur_desc; 603 uint32_t left = size; 604 605 do { 606 uint32_t copied; 607 608 copied = copy_data_from_desc(data, vc_req, desc, left); 609 if (copied == 0) 610 return -1; 611 left -= copied; 612 data = RTE_PTR_ADD(data, copied); 613 } while (left != 0 && ++desc < head + max_n_descs); 614 615 if (unlikely(left != 0)) 616 return -1; 617 618 if (unlikely(desc == head + max_n_descs)) 619 *cur_desc = NULL; 620 else 621 *cur_desc = desc + 1; 622 623 return 0; 624 } 625 626 static void 627 write_back_data(struct vhost_crypto_data_req *vc_req) 628 { 629 struct vhost_crypto_writeback_data *wb_data = vc_req->wb, *wb_last; 630 631 while (wb_data) { 632 rte_memcpy(wb_data->dst, wb_data->src, wb_data->len); 633 memset(wb_data->src, 0, wb_data->len); 634 wb_last = wb_data; 635 wb_data = wb_data->next; 636 rte_mempool_put(vc_req->wb_pool, wb_last); 637 } 638 } 639 640 static void 641 free_wb_data(struct vhost_crypto_writeback_data *wb_data, 642 struct rte_mempool *mp) 643 { 644 while (wb_data->next != NULL) 645 free_wb_data(wb_data->next, mp); 646 647 rte_mempool_put(mp, wb_data); 648 } 649 650 /** 651 * The function will allocate a vhost_crypto_writeback_data linked list 652 * containing the source and destination data pointers for the write back 653 * operation after dequeued from Cryptodev PMD queues. 654 * 655 * @param vc_req 656 * The vhost crypto data request pointer 657 * @param cur_desc 658 * The pointer of the current in use descriptor pointer. The content of 659 * cur_desc is expected to be updated after the function execution. 660 * @param end_wb_data 661 * The last write back data element to be returned. It is used only in cipher 662 * and hash chain operations. 663 * @param src 664 * The source data pointer 665 * @param offset 666 * The offset to both source and destination data. For source data the offset 667 * is the number of bytes between src and start point of cipher operation. For 668 * destination data the offset is the number of bytes from *cur_desc->addr 669 * to the point where the src will be written to. 670 * @param write_back_len 671 * The size of the write back length. 672 * @return 673 * The pointer to the start of the write back data linked list. 674 */ 675 static __rte_always_inline struct vhost_crypto_writeback_data * 676 prepare_write_back_data(struct vhost_crypto_data_req *vc_req, 677 struct vhost_crypto_desc *head_desc, 678 struct vhost_crypto_desc **cur_desc, 679 struct vhost_crypto_writeback_data **end_wb_data, 680 uint8_t *src, 681 uint32_t offset, 682 uint64_t write_back_len, 683 uint32_t max_n_descs) 684 { 685 struct vhost_crypto_writeback_data *wb_data, *head; 686 struct vhost_crypto_desc *desc = *cur_desc; 687 uint64_t dlen; 688 uint8_t *dst; 689 int ret; 690 691 ret = rte_mempool_get(vc_req->wb_pool, (void **)&head); 692 if (unlikely(ret < 0)) { 693 VC_LOG_ERR("no memory"); 694 goto error_exit; 695 } 696 697 wb_data = head; 698 699 if (likely(desc->len > offset)) { 700 wb_data->src = src + offset; 701 dlen = desc->len; 702 dst = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, 703 &dlen, VHOST_ACCESS_RW); 704 if (unlikely(!dst || dlen != desc->len)) { 705 VC_LOG_ERR("Failed to map descriptor"); 706 goto error_exit; 707 } 708 709 wb_data->dst = dst + offset; 710 wb_data->len = RTE_MIN(dlen - offset, write_back_len); 711 write_back_len -= wb_data->len; 712 src += offset + wb_data->len; 713 offset = 0; 714 715 if (unlikely(write_back_len)) { 716 ret = rte_mempool_get(vc_req->wb_pool, 717 (void **)&(wb_data->next)); 718 if (unlikely(ret < 0)) { 719 VC_LOG_ERR("no memory"); 720 goto error_exit; 721 } 722 723 wb_data = wb_data->next; 724 } else 725 wb_data->next = NULL; 726 } else 727 offset -= desc->len; 728 729 while (write_back_len && 730 desc >= head_desc && 731 desc - head_desc < (int)max_n_descs) { 732 desc++; 733 if (unlikely(!(desc->flags & VRING_DESC_F_WRITE))) { 734 VC_LOG_ERR("incorrect descriptor"); 735 goto error_exit; 736 } 737 738 if (desc->len <= offset) { 739 offset -= desc->len; 740 continue; 741 } 742 743 dlen = desc->len; 744 dst = IOVA_TO_VVA(uint8_t *, vc_req, desc->addr, &dlen, 745 VHOST_ACCESS_RW) + offset; 746 if (unlikely(dst == NULL || dlen != desc->len)) { 747 VC_LOG_ERR("Failed to map descriptor"); 748 goto error_exit; 749 } 750 751 wb_data->src = src + offset; 752 wb_data->dst = dst; 753 wb_data->len = RTE_MIN(desc->len - offset, write_back_len); 754 write_back_len -= wb_data->len; 755 src += wb_data->len; 756 offset = 0; 757 758 if (write_back_len) { 759 ret = rte_mempool_get(vc_req->wb_pool, 760 (void **)&(wb_data->next)); 761 if (unlikely(ret < 0)) { 762 VC_LOG_ERR("no memory"); 763 goto error_exit; 764 } 765 766 wb_data = wb_data->next; 767 } else 768 wb_data->next = NULL; 769 } 770 771 if (unlikely(desc - head_desc == (int)max_n_descs)) 772 *cur_desc = NULL; 773 else 774 *cur_desc = desc + 1; 775 776 *end_wb_data = wb_data; 777 778 return head; 779 780 error_exit: 781 if (head) 782 free_wb_data(head, vc_req->wb_pool); 783 784 return NULL; 785 } 786 787 static __rte_always_inline uint8_t 788 vhost_crypto_check_cipher_request(struct virtio_crypto_cipher_data_req *req) 789 { 790 if (likely((req->para.iv_len <= VHOST_CRYPTO_MAX_IV_LEN) && 791 (req->para.src_data_len <= RTE_MBUF_DEFAULT_BUF_SIZE) && 792 (req->para.dst_data_len >= req->para.src_data_len) && 793 (req->para.dst_data_len <= RTE_MBUF_DEFAULT_BUF_SIZE))) 794 return VIRTIO_CRYPTO_OK; 795 return VIRTIO_CRYPTO_BADMSG; 796 } 797 798 static __rte_always_inline uint8_t 799 prepare_sym_cipher_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op, 800 struct vhost_crypto_data_req *vc_req, 801 struct virtio_crypto_cipher_data_req *cipher, 802 struct vhost_crypto_desc *head, 803 uint32_t max_n_descs) 804 { 805 struct vhost_crypto_desc *desc = head; 806 struct vhost_crypto_writeback_data *ewb = NULL; 807 struct rte_mbuf *m_src = op->sym->m_src, *m_dst = op->sym->m_dst; 808 uint8_t *iv_data = rte_crypto_op_ctod_offset(op, uint8_t *, IV_OFFSET); 809 uint8_t ret = vhost_crypto_check_cipher_request(cipher); 810 811 if (unlikely(ret != VIRTIO_CRYPTO_OK)) 812 goto error_exit; 813 814 /* prepare */ 815 /* iv */ 816 if (unlikely(copy_data(iv_data, vc_req, head, &desc, 817 cipher->para.iv_len, max_n_descs))) { 818 VC_LOG_ERR("Incorrect virtio descriptor"); 819 ret = VIRTIO_CRYPTO_BADMSG; 820 goto error_exit; 821 } 822 823 switch (vcrypto->option) { 824 case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE: 825 m_src->data_len = cipher->para.src_data_len; 826 m_src->buf_iova = gpa_to_hpa(vcrypto->dev, desc->addr, 827 cipher->para.src_data_len); 828 m_src->buf_addr = get_data_ptr(vc_req, desc, VHOST_ACCESS_RO); 829 if (unlikely(m_src->buf_iova == 0 || 830 m_src->buf_addr == NULL)) { 831 VC_LOG_ERR("zero_copy may fail due to cross page data"); 832 ret = VIRTIO_CRYPTO_ERR; 833 goto error_exit; 834 } 835 836 if (unlikely(move_desc(head, &desc, cipher->para.src_data_len, 837 max_n_descs) < 0)) { 838 VC_LOG_ERR("Incorrect descriptor"); 839 ret = VIRTIO_CRYPTO_ERR; 840 goto error_exit; 841 } 842 843 break; 844 case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE: 845 vc_req->wb_pool = vcrypto->wb_pool; 846 m_src->data_len = cipher->para.src_data_len; 847 if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *), 848 vc_req, head, &desc, cipher->para.src_data_len, 849 max_n_descs) < 0)) { 850 VC_LOG_ERR("Incorrect virtio descriptor"); 851 ret = VIRTIO_CRYPTO_BADMSG; 852 goto error_exit; 853 } 854 break; 855 default: 856 ret = VIRTIO_CRYPTO_BADMSG; 857 goto error_exit; 858 } 859 860 /* dst */ 861 desc = find_write_desc(head, desc, max_n_descs); 862 if (unlikely(!desc)) { 863 VC_LOG_ERR("Cannot find write location"); 864 ret = VIRTIO_CRYPTO_BADMSG; 865 goto error_exit; 866 } 867 868 switch (vcrypto->option) { 869 case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE: 870 m_dst->buf_iova = gpa_to_hpa(vcrypto->dev, 871 desc->addr, cipher->para.dst_data_len); 872 m_dst->buf_addr = get_data_ptr(vc_req, desc, VHOST_ACCESS_RW); 873 if (unlikely(m_dst->buf_iova == 0 || m_dst->buf_addr == NULL)) { 874 VC_LOG_ERR("zero_copy may fail due to cross page data"); 875 ret = VIRTIO_CRYPTO_ERR; 876 goto error_exit; 877 } 878 879 if (unlikely(move_desc(head, &desc, cipher->para.dst_data_len, 880 max_n_descs) < 0)) { 881 VC_LOG_ERR("Incorrect descriptor"); 882 ret = VIRTIO_CRYPTO_ERR; 883 goto error_exit; 884 } 885 886 m_dst->data_len = cipher->para.dst_data_len; 887 break; 888 case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE: 889 vc_req->wb = prepare_write_back_data(vc_req, head, &desc, &ewb, 890 rte_pktmbuf_mtod(m_src, uint8_t *), 0, 891 cipher->para.dst_data_len, max_n_descs); 892 if (unlikely(vc_req->wb == NULL)) { 893 ret = VIRTIO_CRYPTO_ERR; 894 goto error_exit; 895 } 896 897 break; 898 default: 899 ret = VIRTIO_CRYPTO_BADMSG; 900 goto error_exit; 901 } 902 903 /* src data */ 904 op->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 905 op->sess_type = RTE_CRYPTO_OP_WITH_SESSION; 906 907 op->sym->cipher.data.offset = 0; 908 op->sym->cipher.data.length = cipher->para.src_data_len; 909 910 vc_req->inhdr = get_data_ptr(vc_req, desc, VHOST_ACCESS_WO); 911 if (unlikely(vc_req->inhdr == NULL)) { 912 ret = VIRTIO_CRYPTO_BADMSG; 913 goto error_exit; 914 } 915 916 vc_req->inhdr->status = VIRTIO_CRYPTO_OK; 917 vc_req->len = cipher->para.dst_data_len + INHDR_LEN; 918 919 return 0; 920 921 error_exit: 922 if (vc_req->wb) 923 free_wb_data(vc_req->wb, vc_req->wb_pool); 924 925 vc_req->len = INHDR_LEN; 926 return ret; 927 } 928 929 static __rte_always_inline uint8_t 930 vhost_crypto_check_chain_request(struct virtio_crypto_alg_chain_data_req *req) 931 { 932 if (likely((req->para.iv_len <= VHOST_CRYPTO_MAX_IV_LEN) && 933 (req->para.src_data_len <= VHOST_CRYPTO_MAX_DATA_SIZE) && 934 (req->para.dst_data_len >= req->para.src_data_len) && 935 (req->para.dst_data_len <= VHOST_CRYPTO_MAX_DATA_SIZE) && 936 (req->para.cipher_start_src_offset < 937 VHOST_CRYPTO_MAX_DATA_SIZE) && 938 (req->para.len_to_cipher <= VHOST_CRYPTO_MAX_DATA_SIZE) && 939 (req->para.hash_start_src_offset < 940 VHOST_CRYPTO_MAX_DATA_SIZE) && 941 (req->para.len_to_hash <= VHOST_CRYPTO_MAX_DATA_SIZE) && 942 (req->para.cipher_start_src_offset + req->para.len_to_cipher <= 943 req->para.src_data_len) && 944 (req->para.hash_start_src_offset + req->para.len_to_hash <= 945 req->para.src_data_len) && 946 (req->para.dst_data_len + req->para.hash_result_len <= 947 VHOST_CRYPTO_MAX_DATA_SIZE))) 948 return VIRTIO_CRYPTO_OK; 949 return VIRTIO_CRYPTO_BADMSG; 950 } 951 952 static __rte_always_inline uint8_t 953 prepare_sym_chain_op(struct vhost_crypto *vcrypto, struct rte_crypto_op *op, 954 struct vhost_crypto_data_req *vc_req, 955 struct virtio_crypto_alg_chain_data_req *chain, 956 struct vhost_crypto_desc *head, 957 uint32_t max_n_descs) 958 { 959 struct vhost_crypto_desc *desc = head, *digest_desc; 960 struct vhost_crypto_writeback_data *ewb = NULL, *ewb2 = NULL; 961 struct rte_mbuf *m_src = op->sym->m_src, *m_dst = op->sym->m_dst; 962 uint8_t *iv_data = rte_crypto_op_ctod_offset(op, uint8_t *, IV_OFFSET); 963 uint32_t digest_offset; 964 void *digest_addr; 965 uint8_t ret = vhost_crypto_check_chain_request(chain); 966 967 if (unlikely(ret != VIRTIO_CRYPTO_OK)) 968 goto error_exit; 969 970 /* prepare */ 971 /* iv */ 972 if (unlikely(copy_data(iv_data, vc_req, head, &desc, 973 chain->para.iv_len, max_n_descs) < 0)) { 974 VC_LOG_ERR("Incorrect virtio descriptor"); 975 ret = VIRTIO_CRYPTO_BADMSG; 976 goto error_exit; 977 } 978 979 switch (vcrypto->option) { 980 case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE: 981 m_src->data_len = chain->para.src_data_len; 982 m_dst->data_len = chain->para.dst_data_len; 983 984 m_src->buf_iova = gpa_to_hpa(vcrypto->dev, desc->addr, 985 chain->para.src_data_len); 986 m_src->buf_addr = get_data_ptr(vc_req, desc, VHOST_ACCESS_RO); 987 if (unlikely(m_src->buf_iova == 0 || m_src->buf_addr == NULL)) { 988 VC_LOG_ERR("zero_copy may fail due to cross page data"); 989 ret = VIRTIO_CRYPTO_ERR; 990 goto error_exit; 991 } 992 993 if (unlikely(move_desc(head, &desc, chain->para.src_data_len, 994 max_n_descs) < 0)) { 995 VC_LOG_ERR("Incorrect descriptor"); 996 ret = VIRTIO_CRYPTO_ERR; 997 goto error_exit; 998 } 999 break; 1000 case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE: 1001 vc_req->wb_pool = vcrypto->wb_pool; 1002 m_src->data_len = chain->para.src_data_len; 1003 if (unlikely(copy_data(rte_pktmbuf_mtod(m_src, uint8_t *), 1004 vc_req, head, &desc, chain->para.src_data_len, 1005 max_n_descs) < 0)) { 1006 VC_LOG_ERR("Incorrect virtio descriptor"); 1007 ret = VIRTIO_CRYPTO_BADMSG; 1008 goto error_exit; 1009 } 1010 1011 break; 1012 default: 1013 ret = VIRTIO_CRYPTO_BADMSG; 1014 goto error_exit; 1015 } 1016 1017 /* dst */ 1018 desc = find_write_desc(head, desc, max_n_descs); 1019 if (unlikely(!desc)) { 1020 VC_LOG_ERR("Cannot find write location"); 1021 ret = VIRTIO_CRYPTO_BADMSG; 1022 goto error_exit; 1023 } 1024 1025 switch (vcrypto->option) { 1026 case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE: 1027 m_dst->buf_iova = gpa_to_hpa(vcrypto->dev, 1028 desc->addr, chain->para.dst_data_len); 1029 m_dst->buf_addr = get_data_ptr(vc_req, desc, VHOST_ACCESS_RW); 1030 if (unlikely(m_dst->buf_iova == 0 || m_dst->buf_addr == NULL)) { 1031 VC_LOG_ERR("zero_copy may fail due to cross page data"); 1032 ret = VIRTIO_CRYPTO_ERR; 1033 goto error_exit; 1034 } 1035 1036 if (unlikely(move_desc(vc_req->head, &desc, 1037 chain->para.dst_data_len, max_n_descs) < 0)) { 1038 VC_LOG_ERR("Incorrect descriptor"); 1039 ret = VIRTIO_CRYPTO_ERR; 1040 goto error_exit; 1041 } 1042 1043 op->sym->auth.digest.phys_addr = gpa_to_hpa(vcrypto->dev, 1044 desc->addr, chain->para.hash_result_len); 1045 op->sym->auth.digest.data = get_data_ptr(vc_req, desc, 1046 VHOST_ACCESS_RW); 1047 if (unlikely(op->sym->auth.digest.phys_addr == 0)) { 1048 VC_LOG_ERR("zero_copy may fail due to cross page data"); 1049 ret = VIRTIO_CRYPTO_ERR; 1050 goto error_exit; 1051 } 1052 1053 if (unlikely(move_desc(head, &desc, 1054 chain->para.hash_result_len, 1055 max_n_descs) < 0)) { 1056 VC_LOG_ERR("Incorrect descriptor"); 1057 ret = VIRTIO_CRYPTO_ERR; 1058 goto error_exit; 1059 } 1060 1061 break; 1062 case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE: 1063 vc_req->wb = prepare_write_back_data(vc_req, head, &desc, &ewb, 1064 rte_pktmbuf_mtod(m_src, uint8_t *), 1065 chain->para.cipher_start_src_offset, 1066 chain->para.dst_data_len - 1067 chain->para.cipher_start_src_offset, 1068 max_n_descs); 1069 if (unlikely(vc_req->wb == NULL)) { 1070 ret = VIRTIO_CRYPTO_ERR; 1071 goto error_exit; 1072 } 1073 1074 digest_desc = desc; 1075 digest_offset = m_src->data_len; 1076 digest_addr = rte_pktmbuf_mtod_offset(m_src, void *, 1077 digest_offset); 1078 1079 /** create a wb_data for digest */ 1080 ewb->next = prepare_write_back_data(vc_req, head, &desc, 1081 &ewb2, digest_addr, 0, 1082 chain->para.hash_result_len, max_n_descs); 1083 if (unlikely(ewb->next == NULL)) { 1084 ret = VIRTIO_CRYPTO_ERR; 1085 goto error_exit; 1086 } 1087 1088 if (unlikely(copy_data(digest_addr, vc_req, head, &digest_desc, 1089 chain->para.hash_result_len, 1090 max_n_descs) < 0)) { 1091 VC_LOG_ERR("Incorrect virtio descriptor"); 1092 ret = VIRTIO_CRYPTO_BADMSG; 1093 goto error_exit; 1094 } 1095 1096 op->sym->auth.digest.data = digest_addr; 1097 op->sym->auth.digest.phys_addr = rte_pktmbuf_iova_offset(m_src, 1098 digest_offset); 1099 break; 1100 default: 1101 ret = VIRTIO_CRYPTO_BADMSG; 1102 goto error_exit; 1103 } 1104 1105 /* record inhdr */ 1106 vc_req->inhdr = get_data_ptr(vc_req, desc, VHOST_ACCESS_WO); 1107 if (unlikely(vc_req->inhdr == NULL)) { 1108 ret = VIRTIO_CRYPTO_BADMSG; 1109 goto error_exit; 1110 } 1111 1112 vc_req->inhdr->status = VIRTIO_CRYPTO_OK; 1113 1114 op->type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 1115 op->sess_type = RTE_CRYPTO_OP_WITH_SESSION; 1116 1117 op->sym->cipher.data.offset = chain->para.cipher_start_src_offset; 1118 op->sym->cipher.data.length = chain->para.src_data_len - 1119 chain->para.cipher_start_src_offset; 1120 1121 op->sym->auth.data.offset = chain->para.hash_start_src_offset; 1122 op->sym->auth.data.length = chain->para.len_to_hash; 1123 1124 vc_req->len = chain->para.dst_data_len + chain->para.hash_result_len + 1125 INHDR_LEN; 1126 return 0; 1127 1128 error_exit: 1129 if (vc_req->wb) 1130 free_wb_data(vc_req->wb, vc_req->wb_pool); 1131 vc_req->len = INHDR_LEN; 1132 return ret; 1133 } 1134 1135 /** 1136 * Process on descriptor 1137 */ 1138 static __rte_always_inline int 1139 vhost_crypto_process_one_req(struct vhost_crypto *vcrypto, 1140 struct vhost_virtqueue *vq, struct rte_crypto_op *op, 1141 struct vring_desc *head, struct vhost_crypto_desc *descs, 1142 uint16_t desc_idx) 1143 { 1144 struct vhost_crypto_data_req *vc_req = rte_mbuf_to_priv(op->sym->m_src); 1145 struct rte_cryptodev_sym_session *session; 1146 struct virtio_crypto_op_data_req req; 1147 struct virtio_crypto_inhdr *inhdr; 1148 struct vhost_crypto_desc *desc = descs; 1149 struct vring_desc *src_desc; 1150 uint64_t session_id; 1151 uint64_t dlen; 1152 uint32_t nb_descs = 0, max_n_descs, i; 1153 int err; 1154 1155 vc_req->desc_idx = desc_idx; 1156 vc_req->dev = vcrypto->dev; 1157 vc_req->vq = vq; 1158 1159 if (unlikely((head->flags & VRING_DESC_F_INDIRECT) == 0)) { 1160 VC_LOG_ERR("Invalid descriptor"); 1161 return -1; 1162 } 1163 1164 dlen = head->len; 1165 src_desc = IOVA_TO_VVA(struct vring_desc *, vc_req, head->addr, 1166 &dlen, VHOST_ACCESS_RO); 1167 if (unlikely(!src_desc || dlen != head->len)) { 1168 VC_LOG_ERR("Invalid descriptor"); 1169 return -1; 1170 } 1171 head = src_desc; 1172 1173 nb_descs = max_n_descs = dlen / sizeof(struct vring_desc); 1174 if (unlikely(nb_descs > VHOST_CRYPTO_MAX_N_DESC || nb_descs == 0)) { 1175 err = VIRTIO_CRYPTO_ERR; 1176 VC_LOG_ERR("Cannot process num of descriptors %u", nb_descs); 1177 if (nb_descs > 0) { 1178 struct vring_desc *inhdr_desc = head; 1179 while (inhdr_desc->flags & VRING_DESC_F_NEXT) { 1180 if (inhdr_desc->next >= max_n_descs) 1181 return -1; 1182 inhdr_desc = &head[inhdr_desc->next]; 1183 } 1184 if (inhdr_desc->len != sizeof(*inhdr)) 1185 return -1; 1186 inhdr = IOVA_TO_VVA(struct virtio_crypto_inhdr *, 1187 vc_req, inhdr_desc->addr, &dlen, 1188 VHOST_ACCESS_WO); 1189 if (unlikely(!inhdr || dlen != inhdr_desc->len)) 1190 return -1; 1191 inhdr->status = VIRTIO_CRYPTO_ERR; 1192 return -1; 1193 } 1194 } 1195 1196 /* copy descriptors to local variable */ 1197 for (i = 0; i < max_n_descs; i++) { 1198 desc->addr = src_desc->addr; 1199 desc->len = src_desc->len; 1200 desc->flags = src_desc->flags; 1201 desc++; 1202 if (unlikely((src_desc->flags & VRING_DESC_F_NEXT) == 0)) 1203 break; 1204 if (unlikely(src_desc->next >= max_n_descs)) { 1205 err = VIRTIO_CRYPTO_BADMSG; 1206 VC_LOG_ERR("Invalid descriptor"); 1207 goto error_exit; 1208 } 1209 src_desc = &head[src_desc->next]; 1210 } 1211 1212 vc_req->head = head; 1213 vc_req->zero_copy = vcrypto->option; 1214 1215 nb_descs = desc - descs; 1216 desc = descs; 1217 1218 if (unlikely(desc->len < sizeof(req))) { 1219 err = VIRTIO_CRYPTO_BADMSG; 1220 VC_LOG_ERR("Invalid descriptor"); 1221 goto error_exit; 1222 } 1223 1224 if (unlikely(copy_data(&req, vc_req, descs, &desc, sizeof(req), 1225 max_n_descs) < 0)) { 1226 err = VIRTIO_CRYPTO_BADMSG; 1227 VC_LOG_ERR("Invalid descriptor"); 1228 goto error_exit; 1229 } 1230 1231 /* desc is advanced by 1 now */ 1232 max_n_descs -= 1; 1233 1234 switch (req.header.opcode) { 1235 case VIRTIO_CRYPTO_CIPHER_ENCRYPT: 1236 case VIRTIO_CRYPTO_CIPHER_DECRYPT: 1237 session_id = req.header.session_id; 1238 1239 /* one branch to avoid unnecessary table lookup */ 1240 if (vcrypto->cache_session_id != session_id) { 1241 err = rte_hash_lookup_data(vcrypto->session_map, 1242 &session_id, (void **)&session); 1243 if (unlikely(err < 0)) { 1244 err = VIRTIO_CRYPTO_ERR; 1245 VC_LOG_ERR("Failed to find session %"PRIu64, 1246 session_id); 1247 goto error_exit; 1248 } 1249 1250 vcrypto->cache_session = session; 1251 vcrypto->cache_session_id = session_id; 1252 } 1253 1254 session = vcrypto->cache_session; 1255 1256 err = rte_crypto_op_attach_sym_session(op, session); 1257 if (unlikely(err < 0)) { 1258 err = VIRTIO_CRYPTO_ERR; 1259 VC_LOG_ERR("Failed to attach session to op"); 1260 goto error_exit; 1261 } 1262 1263 switch (req.u.sym_req.op_type) { 1264 case VIRTIO_CRYPTO_SYM_OP_NONE: 1265 err = VIRTIO_CRYPTO_NOTSUPP; 1266 break; 1267 case VIRTIO_CRYPTO_SYM_OP_CIPHER: 1268 err = prepare_sym_cipher_op(vcrypto, op, vc_req, 1269 &req.u.sym_req.u.cipher, desc, 1270 max_n_descs); 1271 break; 1272 case VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING: 1273 err = prepare_sym_chain_op(vcrypto, op, vc_req, 1274 &req.u.sym_req.u.chain, desc, 1275 max_n_descs); 1276 break; 1277 } 1278 if (unlikely(err != 0)) { 1279 VC_LOG_ERR("Failed to process sym request"); 1280 goto error_exit; 1281 } 1282 break; 1283 default: 1284 err = VIRTIO_CRYPTO_ERR; 1285 VC_LOG_ERR("Unsupported symmetric crypto request type %u", 1286 req.header.opcode); 1287 goto error_exit; 1288 } 1289 1290 return 0; 1291 1292 error_exit: 1293 1294 inhdr = reach_inhdr(vc_req, descs, max_n_descs); 1295 if (likely(inhdr != NULL)) 1296 inhdr->status = (uint8_t)err; 1297 1298 return -1; 1299 } 1300 1301 static __rte_always_inline struct vhost_virtqueue * 1302 vhost_crypto_finalize_one_request(struct rte_crypto_op *op, 1303 struct vhost_virtqueue *old_vq) 1304 { 1305 struct rte_mbuf *m_src = op->sym->m_src; 1306 struct rte_mbuf *m_dst = op->sym->m_dst; 1307 struct vhost_crypto_data_req *vc_req = rte_mbuf_to_priv(m_src); 1308 struct vhost_virtqueue *vq; 1309 uint16_t used_idx, desc_idx; 1310 1311 if (unlikely(!vc_req)) { 1312 VC_LOG_ERR("Failed to retrieve vc_req"); 1313 return NULL; 1314 } 1315 vq = vc_req->vq; 1316 used_idx = vc_req->desc_idx; 1317 1318 if (old_vq && (vq != old_vq)) 1319 return vq; 1320 1321 if (unlikely(op->status != RTE_CRYPTO_OP_STATUS_SUCCESS)) 1322 vc_req->inhdr->status = VIRTIO_CRYPTO_ERR; 1323 else { 1324 if (vc_req->zero_copy == 0) 1325 write_back_data(vc_req); 1326 } 1327 1328 desc_idx = vq->avail->ring[used_idx]; 1329 vq->used->ring[desc_idx].id = vq->avail->ring[desc_idx]; 1330 vq->used->ring[desc_idx].len = vc_req->len; 1331 1332 rte_mempool_put(m_src->pool, (void *)m_src); 1333 1334 if (m_dst) 1335 rte_mempool_put(m_dst->pool, (void *)m_dst); 1336 1337 return vc_req->vq; 1338 } 1339 1340 static __rte_always_inline uint16_t 1341 vhost_crypto_complete_one_vm_requests(struct rte_crypto_op **ops, 1342 uint16_t nb_ops, int *callfd) 1343 { 1344 uint16_t processed = 1; 1345 struct vhost_virtqueue *vq, *tmp_vq; 1346 1347 if (unlikely(nb_ops == 0)) 1348 return 0; 1349 1350 vq = vhost_crypto_finalize_one_request(ops[0], NULL); 1351 if (unlikely(vq == NULL)) 1352 return 0; 1353 tmp_vq = vq; 1354 1355 while ((processed < nb_ops)) { 1356 tmp_vq = vhost_crypto_finalize_one_request(ops[processed], 1357 tmp_vq); 1358 1359 if (unlikely(vq != tmp_vq)) 1360 break; 1361 1362 processed++; 1363 } 1364 1365 *callfd = vq->callfd; 1366 1367 *(volatile uint16_t *)&vq->used->idx += processed; 1368 1369 return processed; 1370 } 1371 1372 int 1373 rte_vhost_crypto_driver_start(const char *path) 1374 { 1375 uint64_t protocol_features; 1376 int ret; 1377 1378 ret = rte_vhost_driver_set_features(path, VIRTIO_CRYPTO_FEATURES); 1379 if (ret) 1380 return -1; 1381 1382 ret = rte_vhost_driver_get_protocol_features(path, &protocol_features); 1383 if (ret) 1384 return -1; 1385 protocol_features |= (1ULL << VHOST_USER_PROTOCOL_F_CONFIG); 1386 ret = rte_vhost_driver_set_protocol_features(path, protocol_features); 1387 if (ret) 1388 return -1; 1389 1390 return rte_vhost_driver_start(path); 1391 } 1392 1393 int 1394 rte_vhost_crypto_create(int vid, uint8_t cryptodev_id, 1395 struct rte_mempool *sess_pool, 1396 struct rte_mempool *sess_priv_pool, 1397 int socket_id) 1398 { 1399 struct virtio_net *dev = get_device(vid); 1400 struct rte_hash_parameters params = {0}; 1401 struct vhost_crypto *vcrypto; 1402 char name[128]; 1403 int ret; 1404 1405 if (!dev) { 1406 VC_LOG_ERR("Invalid vid %i", vid); 1407 return -EINVAL; 1408 } 1409 1410 vcrypto = rte_zmalloc_socket(NULL, sizeof(*vcrypto), 1411 RTE_CACHE_LINE_SIZE, socket_id); 1412 if (!vcrypto) { 1413 VC_LOG_ERR("Insufficient memory"); 1414 return -ENOMEM; 1415 } 1416 1417 vcrypto->sess_pool = sess_pool; 1418 vcrypto->sess_priv_pool = sess_priv_pool; 1419 vcrypto->cid = cryptodev_id; 1420 vcrypto->cache_session_id = UINT64_MAX; 1421 vcrypto->last_session_id = 1; 1422 vcrypto->dev = dev; 1423 vcrypto->option = RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE; 1424 1425 snprintf(name, 127, "HASH_VHOST_CRYPT_%u", (uint32_t)vid); 1426 params.name = name; 1427 params.entries = VHOST_CRYPTO_SESSION_MAP_ENTRIES; 1428 params.hash_func = rte_jhash; 1429 params.key_len = sizeof(uint64_t); 1430 params.socket_id = socket_id; 1431 vcrypto->session_map = rte_hash_create(¶ms); 1432 if (!vcrypto->session_map) { 1433 VC_LOG_ERR("Failed to creath session map"); 1434 ret = -ENOMEM; 1435 goto error_exit; 1436 } 1437 1438 snprintf(name, 127, "MBUF_POOL_VM_%u", (uint32_t)vid); 1439 vcrypto->mbuf_pool = rte_pktmbuf_pool_create(name, 1440 VHOST_CRYPTO_MBUF_POOL_SIZE, 512, 1441 sizeof(struct vhost_crypto_data_req), 1442 VHOST_CRYPTO_MAX_DATA_SIZE + RTE_PKTMBUF_HEADROOM, 1443 rte_socket_id()); 1444 if (!vcrypto->mbuf_pool) { 1445 VC_LOG_ERR("Failed to creath mbuf pool"); 1446 ret = -ENOMEM; 1447 goto error_exit; 1448 } 1449 1450 snprintf(name, 127, "WB_POOL_VM_%u", (uint32_t)vid); 1451 vcrypto->wb_pool = rte_mempool_create(name, 1452 VHOST_CRYPTO_MBUF_POOL_SIZE, 1453 sizeof(struct vhost_crypto_writeback_data), 1454 128, 0, NULL, NULL, NULL, NULL, 1455 rte_socket_id(), 0); 1456 if (!vcrypto->wb_pool) { 1457 VC_LOG_ERR("Failed to creath mempool"); 1458 ret = -ENOMEM; 1459 goto error_exit; 1460 } 1461 1462 dev->extern_data = vcrypto; 1463 dev->extern_ops.pre_msg_handle = NULL; 1464 dev->extern_ops.post_msg_handle = vhost_crypto_msg_post_handler; 1465 1466 return 0; 1467 1468 error_exit: 1469 rte_hash_free(vcrypto->session_map); 1470 rte_mempool_free(vcrypto->mbuf_pool); 1471 1472 rte_free(vcrypto); 1473 1474 return ret; 1475 } 1476 1477 int 1478 rte_vhost_crypto_free(int vid) 1479 { 1480 struct virtio_net *dev = get_device(vid); 1481 struct vhost_crypto *vcrypto; 1482 1483 if (unlikely(dev == NULL)) { 1484 VC_LOG_ERR("Invalid vid %i", vid); 1485 return -EINVAL; 1486 } 1487 1488 vcrypto = dev->extern_data; 1489 if (unlikely(vcrypto == NULL)) { 1490 VC_LOG_ERR("Cannot find required data, is it initialized?"); 1491 return -ENOENT; 1492 } 1493 1494 rte_hash_free(vcrypto->session_map); 1495 rte_mempool_free(vcrypto->mbuf_pool); 1496 rte_mempool_free(vcrypto->wb_pool); 1497 rte_free(vcrypto); 1498 1499 dev->extern_data = NULL; 1500 dev->extern_ops.pre_msg_handle = NULL; 1501 dev->extern_ops.post_msg_handle = NULL; 1502 1503 return 0; 1504 } 1505 1506 int 1507 rte_vhost_crypto_set_zero_copy(int vid, enum rte_vhost_crypto_zero_copy option) 1508 { 1509 struct virtio_net *dev = get_device(vid); 1510 struct vhost_crypto *vcrypto; 1511 1512 if (unlikely(dev == NULL)) { 1513 VC_LOG_ERR("Invalid vid %i", vid); 1514 return -EINVAL; 1515 } 1516 1517 if (unlikely((uint32_t)option >= 1518 RTE_VHOST_CRYPTO_MAX_ZERO_COPY_OPTIONS)) { 1519 VC_LOG_ERR("Invalid option %i", option); 1520 return -EINVAL; 1521 } 1522 1523 vcrypto = (struct vhost_crypto *)dev->extern_data; 1524 if (unlikely(vcrypto == NULL)) { 1525 VC_LOG_ERR("Cannot find required data, is it initialized?"); 1526 return -ENOENT; 1527 } 1528 1529 if (vcrypto->option == (uint8_t)option) 1530 return 0; 1531 1532 if (!(rte_mempool_full(vcrypto->mbuf_pool)) || 1533 !(rte_mempool_full(vcrypto->wb_pool))) { 1534 VC_LOG_ERR("Cannot update zero copy as mempool is not full"); 1535 return -EINVAL; 1536 } 1537 1538 if (option == RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE) { 1539 char name[128]; 1540 1541 snprintf(name, 127, "WB_POOL_VM_%u", (uint32_t)vid); 1542 vcrypto->wb_pool = rte_mempool_create(name, 1543 VHOST_CRYPTO_MBUF_POOL_SIZE, 1544 sizeof(struct vhost_crypto_writeback_data), 1545 128, 0, NULL, NULL, NULL, NULL, 1546 rte_socket_id(), 0); 1547 if (!vcrypto->wb_pool) { 1548 VC_LOG_ERR("Failed to creath mbuf pool"); 1549 return -ENOMEM; 1550 } 1551 } else { 1552 rte_mempool_free(vcrypto->wb_pool); 1553 vcrypto->wb_pool = NULL; 1554 } 1555 1556 vcrypto->option = (uint8_t)option; 1557 1558 return 0; 1559 } 1560 1561 uint16_t 1562 rte_vhost_crypto_fetch_requests(int vid, uint32_t qid, 1563 struct rte_crypto_op **ops, uint16_t nb_ops) 1564 { 1565 struct rte_mbuf *mbufs[VHOST_CRYPTO_MAX_BURST_SIZE * 2]; 1566 struct vhost_crypto_desc descs[VHOST_CRYPTO_MAX_N_DESC]; 1567 struct virtio_net *dev = get_device(vid); 1568 struct vhost_crypto *vcrypto; 1569 struct vhost_virtqueue *vq; 1570 uint16_t avail_idx; 1571 uint16_t start_idx; 1572 uint16_t count; 1573 uint16_t i = 0; 1574 1575 if (unlikely(dev == NULL)) { 1576 VC_LOG_ERR("Invalid vid %i", vid); 1577 return 0; 1578 } 1579 1580 if (unlikely(qid >= VHOST_MAX_QUEUE_PAIRS)) { 1581 VC_LOG_ERR("Invalid qid %u", qid); 1582 return 0; 1583 } 1584 1585 vcrypto = (struct vhost_crypto *)dev->extern_data; 1586 if (unlikely(vcrypto == NULL)) { 1587 VC_LOG_ERR("Cannot find required data, is it initialized?"); 1588 return 0; 1589 } 1590 1591 vq = dev->virtqueue[qid]; 1592 1593 avail_idx = *((volatile uint16_t *)&vq->avail->idx); 1594 start_idx = vq->last_used_idx; 1595 count = avail_idx - start_idx; 1596 count = RTE_MIN(count, VHOST_CRYPTO_MAX_BURST_SIZE); 1597 count = RTE_MIN(count, nb_ops); 1598 1599 if (unlikely(count == 0)) 1600 return 0; 1601 1602 /* for zero copy, we need 2 empty mbufs for src and dst, otherwise 1603 * we need only 1 mbuf as src and dst 1604 */ 1605 switch (vcrypto->option) { 1606 case RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE: 1607 if (unlikely(rte_mempool_get_bulk(vcrypto->mbuf_pool, 1608 (void **)mbufs, count * 2) < 0)) { 1609 VC_LOG_ERR("Insufficient memory"); 1610 return 0; 1611 } 1612 1613 for (i = 0; i < count; i++) { 1614 uint16_t used_idx = (start_idx + i) & (vq->size - 1); 1615 uint16_t desc_idx = vq->avail->ring[used_idx]; 1616 struct vring_desc *head = &vq->desc[desc_idx]; 1617 struct rte_crypto_op *op = ops[i]; 1618 1619 op->sym->m_src = mbufs[i * 2]; 1620 op->sym->m_dst = mbufs[i * 2 + 1]; 1621 op->sym->m_src->data_off = 0; 1622 op->sym->m_dst->data_off = 0; 1623 1624 if (unlikely(vhost_crypto_process_one_req(vcrypto, vq, 1625 op, head, descs, used_idx) < 0)) 1626 break; 1627 } 1628 1629 if (unlikely(i < count)) 1630 rte_mempool_put_bulk(vcrypto->mbuf_pool, 1631 (void **)&mbufs[i * 2], 1632 (count - i) * 2); 1633 1634 break; 1635 1636 case RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE: 1637 if (unlikely(rte_mempool_get_bulk(vcrypto->mbuf_pool, 1638 (void **)mbufs, count) < 0)) { 1639 VC_LOG_ERR("Insufficient memory"); 1640 return 0; 1641 } 1642 1643 for (i = 0; i < count; i++) { 1644 uint16_t used_idx = (start_idx + i) & (vq->size - 1); 1645 uint16_t desc_idx = vq->avail->ring[used_idx]; 1646 struct vring_desc *head = &vq->desc[desc_idx]; 1647 struct rte_crypto_op *op = ops[i]; 1648 1649 op->sym->m_src = mbufs[i]; 1650 op->sym->m_dst = NULL; 1651 op->sym->m_src->data_off = 0; 1652 1653 if (unlikely(vhost_crypto_process_one_req(vcrypto, vq, 1654 op, head, descs, desc_idx) < 0)) 1655 break; 1656 } 1657 1658 if (unlikely(i < count)) 1659 rte_mempool_put_bulk(vcrypto->mbuf_pool, 1660 (void **)&mbufs[i], 1661 count - i); 1662 1663 break; 1664 1665 } 1666 1667 vq->last_used_idx += i; 1668 1669 return i; 1670 } 1671 1672 uint16_t 1673 rte_vhost_crypto_finalize_requests(struct rte_crypto_op **ops, 1674 uint16_t nb_ops, int *callfds, uint16_t *nb_callfds) 1675 { 1676 struct rte_crypto_op **tmp_ops = ops; 1677 uint16_t count = 0, left = nb_ops; 1678 int callfd; 1679 uint16_t idx = 0; 1680 1681 while (left) { 1682 count = vhost_crypto_complete_one_vm_requests(tmp_ops, left, 1683 &callfd); 1684 if (unlikely(count == 0)) 1685 break; 1686 1687 tmp_ops = &tmp_ops[count]; 1688 left -= count; 1689 1690 callfds[idx++] = callfd; 1691 1692 if (unlikely(idx >= VIRTIO_CRYPTO_MAX_NUM_BURST_VQS)) { 1693 VC_LOG_ERR("Too many vqs"); 1694 break; 1695 } 1696 } 1697 1698 *nb_callfds = idx; 1699 1700 return nb_ops - left; 1701 } 1702