1 /* $OpenBSD: cryptodev.c,v 1.52 2002/06/19 07:22:46 deraadt Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 Theo de Raadt 5 * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting 6 * Copyright (c) 2014-2021 The FreeBSD Foundation 7 * All rights reserved. 8 * 9 * Portions of this software were developed by John-Mark Gurney 10 * under sponsorship of the FreeBSD Foundation and 11 * Rubicon Communications, LLC (Netgate). 12 * 13 * Portions of this software were developed by Ararat River 14 * Consulting, LLC under sponsorship of the FreeBSD Foundation. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. The name of the author may not be used to endorse or promote products 26 * derived from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 29 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 30 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 31 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 32 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 33 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 34 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 35 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 36 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 37 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 38 * 39 * Effort sponsored in part by the Defense Advanced Research Projects 40 * Agency (DARPA) and Air Force Research Laboratory, Air Force 41 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 42 */ 43 44 #include <sys/cdefs.h> 45 __FBSDID("$FreeBSD$"); 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/malloc.h> 50 #include <sys/mbuf.h> 51 #include <sys/lock.h> 52 #include <sys/mutex.h> 53 #include <sys/proc.h> 54 #include <sys/sysctl.h> 55 #include <sys/errno.h> 56 #include <sys/random.h> 57 #include <sys/conf.h> 58 #include <sys/kernel.h> 59 #include <sys/module.h> 60 #include <sys/fcntl.h> 61 #include <sys/bus.h> 62 #include <sys/sdt.h> 63 #include <sys/syscallsubr.h> 64 65 #include <opencrypto/cryptodev.h> 66 #include <opencrypto/xform.h> 67 68 SDT_PROVIDER_DECLARE(opencrypto); 69 70 SDT_PROBE_DEFINE1(opencrypto, dev, ioctl, error, "int"/*line number*/); 71 72 #ifdef COMPAT_FREEBSD12 73 /* 74 * Previously, most ioctls were performed against a cloned descriptor 75 * of /dev/crypto obtained via CRIOGET. Now all ioctls are performed 76 * against /dev/crypto directly. 77 */ 78 #define CRIOGET _IOWR('c', 100, uint32_t) 79 #endif 80 81 /* the following are done against the cloned descriptor */ 82 83 #ifdef COMPAT_FREEBSD32 84 #include <sys/mount.h> 85 #include <compat/freebsd32/freebsd32.h> 86 87 struct session_op32 { 88 uint32_t cipher; 89 uint32_t mac; 90 uint32_t keylen; 91 uint32_t key; 92 int mackeylen; 93 uint32_t mackey; 94 uint32_t ses; 95 }; 96 97 struct session2_op32 { 98 uint32_t cipher; 99 uint32_t mac; 100 uint32_t keylen; 101 uint32_t key; 102 int mackeylen; 103 uint32_t mackey; 104 uint32_t ses; 105 int crid; 106 int ivlen; 107 int maclen; 108 int pad[2]; 109 }; 110 111 struct crypt_op32 { 112 uint32_t ses; 113 uint16_t op; 114 uint16_t flags; 115 u_int len; 116 uint32_t src, dst; 117 uint32_t mac; 118 uint32_t iv; 119 }; 120 121 struct crypt_aead32 { 122 uint32_t ses; 123 uint16_t op; 124 uint16_t flags; 125 u_int len; 126 u_int aadlen; 127 u_int ivlen; 128 uint32_t src; 129 uint32_t dst; 130 uint32_t aad; 131 uint32_t tag; 132 uint32_t iv; 133 }; 134 135 #define CIOCGSESSION32 _IOWR('c', 101, struct session_op32) 136 #define CIOCCRYPT32 _IOWR('c', 103, struct crypt_op32) 137 #define CIOCGSESSION232 _IOWR('c', 106, struct session2_op32) 138 #define CIOCCRYPTAEAD32 _IOWR('c', 109, struct crypt_aead32) 139 140 static void 141 session_op_from_32(const struct session_op32 *from, struct session2_op *to) 142 { 143 144 memset(to, 0, sizeof(*to)); 145 CP(*from, *to, cipher); 146 CP(*from, *to, mac); 147 CP(*from, *to, keylen); 148 PTRIN_CP(*from, *to, key); 149 CP(*from, *to, mackeylen); 150 PTRIN_CP(*from, *to, mackey); 151 CP(*from, *to, ses); 152 to->crid = CRYPTOCAP_F_HARDWARE; 153 } 154 155 static void 156 session2_op_from_32(const struct session2_op32 *from, struct session2_op *to) 157 { 158 159 session_op_from_32((const struct session_op32 *)from, to); 160 CP(*from, *to, crid); 161 CP(*from, *to, ivlen); 162 CP(*from, *to, maclen); 163 } 164 165 static void 166 session_op_to_32(const struct session2_op *from, struct session_op32 *to) 167 { 168 169 CP(*from, *to, cipher); 170 CP(*from, *to, mac); 171 CP(*from, *to, keylen); 172 PTROUT_CP(*from, *to, key); 173 CP(*from, *to, mackeylen); 174 PTROUT_CP(*from, *to, mackey); 175 CP(*from, *to, ses); 176 } 177 178 static void 179 session2_op_to_32(const struct session2_op *from, struct session2_op32 *to) 180 { 181 182 session_op_to_32(from, (struct session_op32 *)to); 183 CP(*from, *to, crid); 184 } 185 186 static void 187 crypt_op_from_32(const struct crypt_op32 *from, struct crypt_op *to) 188 { 189 190 CP(*from, *to, ses); 191 CP(*from, *to, op); 192 CP(*from, *to, flags); 193 CP(*from, *to, len); 194 PTRIN_CP(*from, *to, src); 195 PTRIN_CP(*from, *to, dst); 196 PTRIN_CP(*from, *to, mac); 197 PTRIN_CP(*from, *to, iv); 198 } 199 200 static void 201 crypt_op_to_32(const struct crypt_op *from, struct crypt_op32 *to) 202 { 203 204 CP(*from, *to, ses); 205 CP(*from, *to, op); 206 CP(*from, *to, flags); 207 CP(*from, *to, len); 208 PTROUT_CP(*from, *to, src); 209 PTROUT_CP(*from, *to, dst); 210 PTROUT_CP(*from, *to, mac); 211 PTROUT_CP(*from, *to, iv); 212 } 213 214 static void 215 crypt_aead_from_32(const struct crypt_aead32 *from, struct crypt_aead *to) 216 { 217 218 CP(*from, *to, ses); 219 CP(*from, *to, op); 220 CP(*from, *to, flags); 221 CP(*from, *to, len); 222 CP(*from, *to, aadlen); 223 CP(*from, *to, ivlen); 224 PTRIN_CP(*from, *to, src); 225 PTRIN_CP(*from, *to, dst); 226 PTRIN_CP(*from, *to, aad); 227 PTRIN_CP(*from, *to, tag); 228 PTRIN_CP(*from, *to, iv); 229 } 230 231 static void 232 crypt_aead_to_32(const struct crypt_aead *from, struct crypt_aead32 *to) 233 { 234 235 CP(*from, *to, ses); 236 CP(*from, *to, op); 237 CP(*from, *to, flags); 238 CP(*from, *to, len); 239 CP(*from, *to, aadlen); 240 CP(*from, *to, ivlen); 241 PTROUT_CP(*from, *to, src); 242 PTROUT_CP(*from, *to, dst); 243 PTROUT_CP(*from, *to, aad); 244 PTROUT_CP(*from, *to, tag); 245 PTROUT_CP(*from, *to, iv); 246 } 247 #endif 248 249 static void 250 session2_op_from_op(const struct session_op *from, struct session2_op *to) 251 { 252 253 memset(to, 0, sizeof(*to)); 254 memcpy(to, from, sizeof(*from)); 255 to->crid = CRYPTOCAP_F_HARDWARE; 256 } 257 258 static void 259 session2_op_to_op(const struct session2_op *from, struct session_op *to) 260 { 261 262 memcpy(to, from, sizeof(*to)); 263 } 264 265 struct csession { 266 TAILQ_ENTRY(csession) next; 267 crypto_session_t cses; 268 volatile u_int refs; 269 uint32_t ses; 270 struct mtx lock; /* for op submission */ 271 272 const struct enc_xform *txform; 273 int hashsize; 274 int ivsize; 275 276 void *key; 277 void *mackey; 278 }; 279 280 struct cryptop_data { 281 struct csession *cse; 282 283 char *buf; 284 char *obuf; 285 char *aad; 286 bool done; 287 }; 288 289 struct fcrypt { 290 TAILQ_HEAD(csessionlist, csession) csessions; 291 int sesn; 292 struct mtx lock; 293 }; 294 295 static bool use_outputbuffers; 296 SYSCTL_BOOL(_kern_crypto, OID_AUTO, cryptodev_use_output, CTLFLAG_RW, 297 &use_outputbuffers, 0, 298 "Use separate output buffers for /dev/crypto requests."); 299 300 static bool use_separate_aad; 301 SYSCTL_BOOL(_kern_crypto, OID_AUTO, cryptodev_separate_aad, CTLFLAG_RW, 302 &use_separate_aad, 0, 303 "Use separate AAD buffer for /dev/crypto requests."); 304 305 /* 306 * Check a crypto identifier to see if it requested 307 * a software device/driver. This can be done either 308 * by device name/class or through search constraints. 309 */ 310 static int 311 checkforsoftware(int *cridp) 312 { 313 int crid; 314 315 crid = *cridp; 316 317 if (!crypto_devallowsoft) { 318 if (crid & CRYPTOCAP_F_SOFTWARE) { 319 if (crid & CRYPTOCAP_F_HARDWARE) { 320 *cridp = CRYPTOCAP_F_HARDWARE; 321 return 0; 322 } 323 return EINVAL; 324 } 325 if ((crid & CRYPTOCAP_F_HARDWARE) == 0 && 326 (crypto_getcaps(crid) & CRYPTOCAP_F_HARDWARE) == 0) 327 return EINVAL; 328 } 329 return 0; 330 } 331 332 static int 333 cse_create(struct fcrypt *fcr, struct session2_op *sop) 334 { 335 struct crypto_session_params csp; 336 struct csession *cse; 337 const struct enc_xform *txform; 338 const struct auth_hash *thash; 339 void *key = NULL; 340 void *mackey = NULL; 341 crypto_session_t cses; 342 int crid, error; 343 344 switch (sop->cipher) { 345 case 0: 346 txform = NULL; 347 break; 348 case CRYPTO_AES_CBC: 349 txform = &enc_xform_aes_cbc; 350 break; 351 case CRYPTO_AES_XTS: 352 txform = &enc_xform_aes_xts; 353 break; 354 case CRYPTO_NULL_CBC: 355 txform = &enc_xform_null; 356 break; 357 case CRYPTO_CAMELLIA_CBC: 358 txform = &enc_xform_camellia; 359 break; 360 case CRYPTO_AES_ICM: 361 txform = &enc_xform_aes_icm; 362 break; 363 case CRYPTO_AES_NIST_GCM_16: 364 txform = &enc_xform_aes_nist_gcm; 365 break; 366 case CRYPTO_CHACHA20: 367 txform = &enc_xform_chacha20; 368 break; 369 case CRYPTO_AES_CCM_16: 370 txform = &enc_xform_ccm; 371 break; 372 case CRYPTO_CHACHA20_POLY1305: 373 txform = &enc_xform_chacha20_poly1305; 374 break; 375 default: 376 CRYPTDEB("invalid cipher"); 377 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 378 return (EINVAL); 379 } 380 381 switch (sop->mac) { 382 case 0: 383 thash = NULL; 384 break; 385 case CRYPTO_POLY1305: 386 thash = &auth_hash_poly1305; 387 break; 388 case CRYPTO_SHA1_HMAC: 389 thash = &auth_hash_hmac_sha1; 390 break; 391 case CRYPTO_SHA2_224_HMAC: 392 thash = &auth_hash_hmac_sha2_224; 393 break; 394 case CRYPTO_SHA2_256_HMAC: 395 thash = &auth_hash_hmac_sha2_256; 396 break; 397 case CRYPTO_SHA2_384_HMAC: 398 thash = &auth_hash_hmac_sha2_384; 399 break; 400 case CRYPTO_SHA2_512_HMAC: 401 thash = &auth_hash_hmac_sha2_512; 402 break; 403 case CRYPTO_RIPEMD160_HMAC: 404 thash = &auth_hash_hmac_ripemd_160; 405 break; 406 #ifdef COMPAT_FREEBSD12 407 case CRYPTO_AES_128_NIST_GMAC: 408 case CRYPTO_AES_192_NIST_GMAC: 409 case CRYPTO_AES_256_NIST_GMAC: 410 /* Should always be paired with GCM. */ 411 if (sop->cipher != CRYPTO_AES_NIST_GCM_16) { 412 CRYPTDEB("GMAC without GCM"); 413 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 414 return (EINVAL); 415 } 416 break; 417 #endif 418 case CRYPTO_AES_NIST_GMAC: 419 switch (sop->mackeylen * 8) { 420 case 128: 421 thash = &auth_hash_nist_gmac_aes_128; 422 break; 423 case 192: 424 thash = &auth_hash_nist_gmac_aes_192; 425 break; 426 case 256: 427 thash = &auth_hash_nist_gmac_aes_256; 428 break; 429 default: 430 CRYPTDEB("invalid GMAC key length"); 431 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 432 return (EINVAL); 433 } 434 break; 435 case CRYPTO_AES_CCM_CBC_MAC: 436 switch (sop->mackeylen) { 437 case 16: 438 thash = &auth_hash_ccm_cbc_mac_128; 439 break; 440 case 24: 441 thash = &auth_hash_ccm_cbc_mac_192; 442 break; 443 case 32: 444 thash = &auth_hash_ccm_cbc_mac_256; 445 break; 446 default: 447 CRYPTDEB("Invalid CBC MAC key size %d", sop->keylen); 448 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 449 return (EINVAL); 450 } 451 break; 452 case CRYPTO_SHA1: 453 thash = &auth_hash_sha1; 454 break; 455 case CRYPTO_SHA2_224: 456 thash = &auth_hash_sha2_224; 457 break; 458 case CRYPTO_SHA2_256: 459 thash = &auth_hash_sha2_256; 460 break; 461 case CRYPTO_SHA2_384: 462 thash = &auth_hash_sha2_384; 463 break; 464 case CRYPTO_SHA2_512: 465 thash = &auth_hash_sha2_512; 466 break; 467 468 case CRYPTO_NULL_HMAC: 469 thash = &auth_hash_null; 470 break; 471 472 case CRYPTO_BLAKE2B: 473 thash = &auth_hash_blake2b; 474 break; 475 case CRYPTO_BLAKE2S: 476 thash = &auth_hash_blake2s; 477 break; 478 479 default: 480 CRYPTDEB("invalid mac"); 481 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 482 return (EINVAL); 483 } 484 485 if (txform == NULL && thash == NULL) { 486 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 487 return (EINVAL); 488 } 489 490 memset(&csp, 0, sizeof(csp)); 491 if (use_outputbuffers) 492 csp.csp_flags |= CSP_F_SEPARATE_OUTPUT; 493 494 if (sop->cipher == CRYPTO_AES_NIST_GCM_16) { 495 switch (sop->mac) { 496 #ifdef COMPAT_FREEBSD12 497 case CRYPTO_AES_128_NIST_GMAC: 498 case CRYPTO_AES_192_NIST_GMAC: 499 case CRYPTO_AES_256_NIST_GMAC: 500 if (sop->keylen != sop->mackeylen) { 501 SDT_PROBE1(opencrypto, dev, ioctl, error, 502 __LINE__); 503 return (EINVAL); 504 } 505 break; 506 #endif 507 case 0: 508 break; 509 default: 510 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 511 return (EINVAL); 512 } 513 csp.csp_mode = CSP_MODE_AEAD; 514 } else if (sop->cipher == CRYPTO_AES_CCM_16) { 515 switch (sop->mac) { 516 #ifdef COMPAT_FREEBSD12 517 case CRYPTO_AES_CCM_CBC_MAC: 518 if (sop->keylen != sop->mackeylen) { 519 SDT_PROBE1(opencrypto, dev, ioctl, error, 520 __LINE__); 521 return (EINVAL); 522 } 523 thash = NULL; 524 break; 525 #endif 526 case 0: 527 break; 528 default: 529 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 530 return (EINVAL); 531 } 532 csp.csp_mode = CSP_MODE_AEAD; 533 } else if (sop->cipher == CRYPTO_CHACHA20_POLY1305) { 534 if (sop->mac != 0) { 535 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 536 return (EINVAL); 537 } 538 csp.csp_mode = CSP_MODE_AEAD; 539 } else if (txform != NULL && thash != NULL) 540 csp.csp_mode = CSP_MODE_ETA; 541 else if (txform != NULL) 542 csp.csp_mode = CSP_MODE_CIPHER; 543 else 544 csp.csp_mode = CSP_MODE_DIGEST; 545 546 switch (csp.csp_mode) { 547 case CSP_MODE_AEAD: 548 case CSP_MODE_ETA: 549 if (use_separate_aad) 550 csp.csp_flags |= CSP_F_SEPARATE_AAD; 551 break; 552 } 553 554 if (txform != NULL) { 555 csp.csp_cipher_alg = txform->type; 556 csp.csp_cipher_klen = sop->keylen; 557 if (sop->keylen > txform->maxkey || 558 sop->keylen < txform->minkey) { 559 CRYPTDEB("invalid cipher parameters"); 560 error = EINVAL; 561 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 562 goto bail; 563 } 564 565 key = malloc(csp.csp_cipher_klen, M_XDATA, M_WAITOK); 566 error = copyin(sop->key, key, csp.csp_cipher_klen); 567 if (error) { 568 CRYPTDEB("invalid key"); 569 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 570 goto bail; 571 } 572 csp.csp_cipher_key = key; 573 csp.csp_ivlen = txform->ivsize; 574 } 575 576 if (thash != NULL) { 577 csp.csp_auth_alg = thash->type; 578 csp.csp_auth_klen = sop->mackeylen; 579 if (sop->mackeylen > thash->keysize || sop->mackeylen < 0) { 580 CRYPTDEB("invalid mac key length"); 581 error = EINVAL; 582 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 583 goto bail; 584 } 585 586 if (csp.csp_auth_klen != 0) { 587 mackey = malloc(csp.csp_auth_klen, M_XDATA, M_WAITOK); 588 error = copyin(sop->mackey, mackey, csp.csp_auth_klen); 589 if (error) { 590 CRYPTDEB("invalid mac key"); 591 SDT_PROBE1(opencrypto, dev, ioctl, error, 592 __LINE__); 593 goto bail; 594 } 595 csp.csp_auth_key = mackey; 596 } 597 598 if (csp.csp_auth_alg == CRYPTO_AES_NIST_GMAC) 599 csp.csp_ivlen = AES_GCM_IV_LEN; 600 if (csp.csp_auth_alg == CRYPTO_AES_CCM_CBC_MAC) 601 csp.csp_ivlen = AES_CCM_IV_LEN; 602 } 603 604 if (sop->ivlen != 0) { 605 if (csp.csp_ivlen == 0) { 606 CRYPTDEB("does not support an IV"); 607 error = EINVAL; 608 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 609 goto bail; 610 } 611 csp.csp_ivlen = sop->ivlen; 612 } 613 if (sop->maclen != 0) { 614 if (!(thash != NULL || csp.csp_mode == CSP_MODE_AEAD)) { 615 CRYPTDEB("does not support a MAC"); 616 error = EINVAL; 617 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 618 goto bail; 619 } 620 csp.csp_auth_mlen = sop->maclen; 621 } 622 623 crid = sop->crid; 624 error = checkforsoftware(&crid); 625 if (error) { 626 CRYPTDEB("checkforsoftware"); 627 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 628 goto bail; 629 } 630 error = crypto_newsession(&cses, &csp, crid); 631 if (error) { 632 CRYPTDEB("crypto_newsession"); 633 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 634 goto bail; 635 } 636 637 cse = malloc(sizeof(struct csession), M_XDATA, M_WAITOK | M_ZERO); 638 mtx_init(&cse->lock, "cryptodev", "crypto session lock", MTX_DEF); 639 refcount_init(&cse->refs, 1); 640 cse->key = key; 641 cse->mackey = mackey; 642 cse->cses = cses; 643 cse->txform = txform; 644 if (sop->maclen != 0) 645 cse->hashsize = sop->maclen; 646 else if (thash != NULL) 647 cse->hashsize = thash->hashsize; 648 else if (csp.csp_mode == CSP_MODE_AEAD) 649 cse->hashsize = txform->macsize; 650 cse->ivsize = csp.csp_ivlen; 651 652 mtx_lock(&fcr->lock); 653 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 654 cse->ses = fcr->sesn++; 655 mtx_unlock(&fcr->lock); 656 657 sop->ses = cse->ses; 658 659 /* return hardware/driver id */ 660 sop->crid = crypto_ses2hid(cse->cses); 661 bail: 662 if (error) { 663 free(key, M_XDATA); 664 free(mackey, M_XDATA); 665 } 666 return (error); 667 } 668 669 static struct csession * 670 cse_find(struct fcrypt *fcr, u_int ses) 671 { 672 struct csession *cse; 673 674 mtx_lock(&fcr->lock); 675 TAILQ_FOREACH(cse, &fcr->csessions, next) { 676 if (cse->ses == ses) { 677 refcount_acquire(&cse->refs); 678 mtx_unlock(&fcr->lock); 679 return (cse); 680 } 681 } 682 mtx_unlock(&fcr->lock); 683 return (NULL); 684 } 685 686 static void 687 cse_free(struct csession *cse) 688 { 689 690 if (!refcount_release(&cse->refs)) 691 return; 692 crypto_freesession(cse->cses); 693 mtx_destroy(&cse->lock); 694 if (cse->key) 695 free(cse->key, M_XDATA); 696 if (cse->mackey) 697 free(cse->mackey, M_XDATA); 698 free(cse, M_XDATA); 699 } 700 701 static bool 702 cse_delete(struct fcrypt *fcr, u_int ses) 703 { 704 struct csession *cse; 705 706 mtx_lock(&fcr->lock); 707 TAILQ_FOREACH(cse, &fcr->csessions, next) { 708 if (cse->ses == ses) { 709 TAILQ_REMOVE(&fcr->csessions, cse, next); 710 mtx_unlock(&fcr->lock); 711 cse_free(cse); 712 return (true); 713 } 714 } 715 mtx_unlock(&fcr->lock); 716 return (false); 717 } 718 719 static struct cryptop_data * 720 cod_alloc(struct csession *cse, size_t aad_len, size_t len) 721 { 722 struct cryptop_data *cod; 723 724 cod = malloc(sizeof(struct cryptop_data), M_XDATA, M_WAITOK | M_ZERO); 725 726 cod->cse = cse; 727 if (crypto_get_params(cse->cses)->csp_flags & CSP_F_SEPARATE_AAD) { 728 if (aad_len != 0) 729 cod->aad = malloc(aad_len, M_XDATA, M_WAITOK); 730 cod->buf = malloc(len, M_XDATA, M_WAITOK); 731 } else 732 cod->buf = malloc(aad_len + len, M_XDATA, M_WAITOK); 733 if (crypto_get_params(cse->cses)->csp_flags & CSP_F_SEPARATE_OUTPUT) 734 cod->obuf = malloc(len, M_XDATA, M_WAITOK); 735 return (cod); 736 } 737 738 static void 739 cod_free(struct cryptop_data *cod) 740 { 741 742 free(cod->aad, M_XDATA); 743 free(cod->obuf, M_XDATA); 744 free(cod->buf, M_XDATA); 745 free(cod, M_XDATA); 746 } 747 748 static int 749 cryptodev_cb(struct cryptop *crp) 750 { 751 struct cryptop_data *cod = crp->crp_opaque; 752 753 /* 754 * Lock to ensure the wakeup() is not missed by the loops 755 * waiting on cod->done in cryptodev_op() and 756 * cryptodev_aead(). 757 */ 758 mtx_lock(&cod->cse->lock); 759 cod->done = true; 760 mtx_unlock(&cod->cse->lock); 761 wakeup(cod); 762 return (0); 763 } 764 765 static int 766 cryptodev_op(struct csession *cse, const struct crypt_op *cop) 767 { 768 const struct crypto_session_params *csp; 769 struct cryptop_data *cod = NULL; 770 struct cryptop *crp = NULL; 771 char *dst; 772 int error; 773 774 if (cop->len > 256*1024-4) { 775 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 776 return (E2BIG); 777 } 778 779 if (cse->txform) { 780 if ((cop->len % cse->txform->blocksize) != 0) { 781 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 782 return (EINVAL); 783 } 784 } 785 786 if (cop->mac && cse->hashsize == 0) { 787 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 788 return (EINVAL); 789 } 790 791 /* 792 * The COP_F_CIPHER_FIRST flag predates explicit session 793 * modes, but the only way it was used was for EtA so allow it 794 * as long as it is consistent with EtA. 795 */ 796 if (cop->flags & COP_F_CIPHER_FIRST) { 797 if (cop->op != COP_ENCRYPT) { 798 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 799 return (EINVAL); 800 } 801 } 802 803 cod = cod_alloc(cse, 0, cop->len + cse->hashsize); 804 dst = cop->dst; 805 806 crp = crypto_getreq(cse->cses, M_WAITOK); 807 808 error = copyin(cop->src, cod->buf, cop->len); 809 if (error) { 810 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 811 goto bail; 812 } 813 crp->crp_payload_start = 0; 814 crp->crp_payload_length = cop->len; 815 if (cse->hashsize) 816 crp->crp_digest_start = cop->len; 817 818 csp = crypto_get_params(cse->cses); 819 switch (csp->csp_mode) { 820 case CSP_MODE_COMPRESS: 821 switch (cop->op) { 822 case COP_ENCRYPT: 823 crp->crp_op = CRYPTO_OP_COMPRESS; 824 break; 825 case COP_DECRYPT: 826 crp->crp_op = CRYPTO_OP_DECOMPRESS; 827 break; 828 default: 829 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 830 error = EINVAL; 831 goto bail; 832 } 833 break; 834 case CSP_MODE_CIPHER: 835 if (cop->len == 0 || 836 (cop->iv == NULL && cop->len == cse->ivsize)) { 837 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 838 error = EINVAL; 839 goto bail; 840 } 841 switch (cop->op) { 842 case COP_ENCRYPT: 843 crp->crp_op = CRYPTO_OP_ENCRYPT; 844 break; 845 case COP_DECRYPT: 846 crp->crp_op = CRYPTO_OP_DECRYPT; 847 break; 848 default: 849 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 850 error = EINVAL; 851 goto bail; 852 } 853 break; 854 case CSP_MODE_DIGEST: 855 switch (cop->op) { 856 case 0: 857 case COP_ENCRYPT: 858 case COP_DECRYPT: 859 crp->crp_op = CRYPTO_OP_COMPUTE_DIGEST; 860 if (cod->obuf != NULL) 861 crp->crp_digest_start = 0; 862 break; 863 default: 864 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 865 error = EINVAL; 866 goto bail; 867 } 868 break; 869 case CSP_MODE_AEAD: 870 if (cse->ivsize != 0 && cop->iv == NULL) { 871 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 872 error = EINVAL; 873 goto bail; 874 } 875 /* FALLTHROUGH */ 876 case CSP_MODE_ETA: 877 switch (cop->op) { 878 case COP_ENCRYPT: 879 crp->crp_op = CRYPTO_OP_ENCRYPT | 880 CRYPTO_OP_COMPUTE_DIGEST; 881 break; 882 case COP_DECRYPT: 883 crp->crp_op = CRYPTO_OP_DECRYPT | 884 CRYPTO_OP_VERIFY_DIGEST; 885 break; 886 default: 887 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 888 error = EINVAL; 889 goto bail; 890 } 891 break; 892 default: 893 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 894 error = EINVAL; 895 goto bail; 896 } 897 898 crp->crp_flags = CRYPTO_F_CBIMM | (cop->flags & COP_F_BATCH); 899 crypto_use_buf(crp, cod->buf, cop->len + cse->hashsize); 900 if (cod->obuf) 901 crypto_use_output_buf(crp, cod->obuf, cop->len + cse->hashsize); 902 crp->crp_callback = cryptodev_cb; 903 crp->crp_opaque = cod; 904 905 if (cop->iv) { 906 if (cse->ivsize == 0) { 907 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 908 error = EINVAL; 909 goto bail; 910 } 911 error = copyin(cop->iv, crp->crp_iv, cse->ivsize); 912 if (error) { 913 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 914 goto bail; 915 } 916 crp->crp_flags |= CRYPTO_F_IV_SEPARATE; 917 } else if (cse->ivsize != 0) { 918 if (crp->crp_payload_length < cse->ivsize) { 919 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 920 error = EINVAL; 921 goto bail; 922 } 923 crp->crp_iv_start = 0; 924 crp->crp_payload_length -= cse->ivsize; 925 if (crp->crp_payload_length != 0) 926 crp->crp_payload_start = cse->ivsize; 927 dst += cse->ivsize; 928 } 929 930 if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) { 931 error = copyin(cop->mac, cod->buf + crp->crp_digest_start, 932 cse->hashsize); 933 if (error) { 934 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 935 goto bail; 936 } 937 } 938 again: 939 /* 940 * Let the dispatch run unlocked, then, interlock against the 941 * callback before checking if the operation completed and going 942 * to sleep. This insures drivers don't inherit our lock which 943 * results in a lock order reversal between crypto_dispatch forced 944 * entry and the crypto_done callback into us. 945 */ 946 error = crypto_dispatch(crp); 947 if (error != 0) { 948 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 949 goto bail; 950 } 951 952 mtx_lock(&cse->lock); 953 while (!cod->done) 954 mtx_sleep(cod, &cse->lock, PWAIT, "crydev", 0); 955 mtx_unlock(&cse->lock); 956 957 if (crp->crp_etype == EAGAIN) { 958 crp->crp_etype = 0; 959 crp->crp_flags &= ~CRYPTO_F_DONE; 960 cod->done = false; 961 goto again; 962 } 963 964 if (crp->crp_etype != 0) { 965 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 966 error = crp->crp_etype; 967 goto bail; 968 } 969 970 if (cop->dst != NULL) { 971 error = copyout(cod->obuf != NULL ? cod->obuf : 972 cod->buf + crp->crp_payload_start, dst, 973 crp->crp_payload_length); 974 if (error) { 975 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 976 goto bail; 977 } 978 } 979 980 if (cop->mac != NULL && (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) == 0) { 981 error = copyout((cod->obuf != NULL ? cod->obuf : cod->buf) + 982 crp->crp_digest_start, cop->mac, cse->hashsize); 983 if (error) { 984 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 985 goto bail; 986 } 987 } 988 989 bail: 990 crypto_freereq(crp); 991 cod_free(cod); 992 993 return (error); 994 } 995 996 static int 997 cryptodev_aead(struct csession *cse, struct crypt_aead *caead) 998 { 999 const struct crypto_session_params *csp; 1000 struct cryptop_data *cod = NULL; 1001 struct cryptop *crp = NULL; 1002 char *dst; 1003 int error; 1004 1005 if (caead->len > 256*1024-4 || caead->aadlen > 256*1024-4) { 1006 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1007 return (E2BIG); 1008 } 1009 1010 if (cse->txform == NULL || cse->hashsize == 0 || caead->tag == NULL || 1011 (caead->len % cse->txform->blocksize) != 0) { 1012 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1013 return (EINVAL); 1014 } 1015 1016 /* 1017 * The COP_F_CIPHER_FIRST flag predates explicit session 1018 * modes, but the only way it was used was for EtA so allow it 1019 * as long as it is consistent with EtA. 1020 */ 1021 if (caead->flags & COP_F_CIPHER_FIRST) { 1022 if (caead->op != COP_ENCRYPT) { 1023 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1024 return (EINVAL); 1025 } 1026 } 1027 1028 cod = cod_alloc(cse, caead->aadlen, caead->len + cse->hashsize); 1029 dst = caead->dst; 1030 1031 crp = crypto_getreq(cse->cses, M_WAITOK); 1032 1033 if (cod->aad != NULL) 1034 error = copyin(caead->aad, cod->aad, caead->aadlen); 1035 else 1036 error = copyin(caead->aad, cod->buf, caead->aadlen); 1037 if (error) { 1038 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1039 goto bail; 1040 } 1041 crp->crp_aad = cod->aad; 1042 crp->crp_aad_start = 0; 1043 crp->crp_aad_length = caead->aadlen; 1044 1045 if (cod->aad != NULL) 1046 crp->crp_payload_start = 0; 1047 else 1048 crp->crp_payload_start = caead->aadlen; 1049 error = copyin(caead->src, cod->buf + crp->crp_payload_start, 1050 caead->len); 1051 if (error) { 1052 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1053 goto bail; 1054 } 1055 crp->crp_payload_length = caead->len; 1056 if (caead->op == COP_ENCRYPT && cod->obuf != NULL) 1057 crp->crp_digest_start = crp->crp_payload_output_start + 1058 caead->len; 1059 else 1060 crp->crp_digest_start = crp->crp_payload_start + caead->len; 1061 1062 csp = crypto_get_params(cse->cses); 1063 switch (csp->csp_mode) { 1064 case CSP_MODE_AEAD: 1065 case CSP_MODE_ETA: 1066 switch (caead->op) { 1067 case COP_ENCRYPT: 1068 crp->crp_op = CRYPTO_OP_ENCRYPT | 1069 CRYPTO_OP_COMPUTE_DIGEST; 1070 break; 1071 case COP_DECRYPT: 1072 crp->crp_op = CRYPTO_OP_DECRYPT | 1073 CRYPTO_OP_VERIFY_DIGEST; 1074 break; 1075 default: 1076 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1077 error = EINVAL; 1078 goto bail; 1079 } 1080 break; 1081 default: 1082 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1083 error = EINVAL; 1084 goto bail; 1085 } 1086 1087 crp->crp_flags = CRYPTO_F_CBIMM | (caead->flags & COP_F_BATCH); 1088 crypto_use_buf(crp, cod->buf, crp->crp_payload_start + caead->len + 1089 cse->hashsize); 1090 if (cod->obuf != NULL) 1091 crypto_use_output_buf(crp, cod->obuf, caead->len + 1092 cse->hashsize); 1093 crp->crp_callback = cryptodev_cb; 1094 crp->crp_opaque = cod; 1095 1096 if (caead->iv) { 1097 /* 1098 * Permit a 16-byte IV for AES-XTS, but only use the 1099 * first 8 bytes as a block number. 1100 */ 1101 if (csp->csp_mode == CSP_MODE_ETA && 1102 csp->csp_cipher_alg == CRYPTO_AES_XTS && 1103 caead->ivlen == AES_BLOCK_LEN) 1104 caead->ivlen = AES_XTS_IV_LEN; 1105 1106 if (cse->ivsize == 0) { 1107 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1108 error = EINVAL; 1109 goto bail; 1110 } 1111 if (caead->ivlen != cse->ivsize) { 1112 error = EINVAL; 1113 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1114 goto bail; 1115 } 1116 1117 error = copyin(caead->iv, crp->crp_iv, cse->ivsize); 1118 if (error) { 1119 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1120 goto bail; 1121 } 1122 crp->crp_flags |= CRYPTO_F_IV_SEPARATE; 1123 } else { 1124 error = EINVAL; 1125 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1126 goto bail; 1127 } 1128 1129 if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) { 1130 error = copyin(caead->tag, cod->buf + crp->crp_digest_start, 1131 cse->hashsize); 1132 if (error) { 1133 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1134 goto bail; 1135 } 1136 } 1137 again: 1138 /* 1139 * Let the dispatch run unlocked, then, interlock against the 1140 * callback before checking if the operation completed and going 1141 * to sleep. This insures drivers don't inherit our lock which 1142 * results in a lock order reversal between crypto_dispatch forced 1143 * entry and the crypto_done callback into us. 1144 */ 1145 error = crypto_dispatch(crp); 1146 if (error != 0) { 1147 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1148 goto bail; 1149 } 1150 1151 mtx_lock(&cse->lock); 1152 while (!cod->done) 1153 mtx_sleep(cod, &cse->lock, PWAIT, "crydev", 0); 1154 mtx_unlock(&cse->lock); 1155 1156 if (crp->crp_etype == EAGAIN) { 1157 crp->crp_etype = 0; 1158 crp->crp_flags &= ~CRYPTO_F_DONE; 1159 cod->done = false; 1160 goto again; 1161 } 1162 1163 if (crp->crp_etype != 0) { 1164 error = crp->crp_etype; 1165 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1166 goto bail; 1167 } 1168 1169 if (caead->dst != NULL) { 1170 error = copyout(cod->obuf != NULL ? cod->obuf : 1171 cod->buf + crp->crp_payload_start, dst, 1172 crp->crp_payload_length); 1173 if (error) { 1174 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1175 goto bail; 1176 } 1177 } 1178 1179 if ((crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) == 0) { 1180 error = copyout((cod->obuf != NULL ? cod->obuf : cod->buf) + 1181 crp->crp_digest_start, caead->tag, cse->hashsize); 1182 if (error) { 1183 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1184 goto bail; 1185 } 1186 } 1187 1188 bail: 1189 crypto_freereq(crp); 1190 cod_free(cod); 1191 1192 return (error); 1193 } 1194 1195 static int 1196 cryptodev_find(struct crypt_find_op *find) 1197 { 1198 device_t dev; 1199 size_t fnlen = sizeof find->name; 1200 1201 if (find->crid != -1) { 1202 dev = crypto_find_device_byhid(find->crid); 1203 if (dev == NULL) 1204 return (ENOENT); 1205 strncpy(find->name, device_get_nameunit(dev), fnlen); 1206 find->name[fnlen - 1] = '\x0'; 1207 } else { 1208 find->name[fnlen - 1] = '\x0'; 1209 find->crid = crypto_find_driver(find->name); 1210 if (find->crid == -1) 1211 return (ENOENT); 1212 } 1213 return (0); 1214 } 1215 1216 static void 1217 fcrypt_dtor(void *data) 1218 { 1219 struct fcrypt *fcr = data; 1220 struct csession *cse; 1221 1222 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 1223 TAILQ_REMOVE(&fcr->csessions, cse, next); 1224 KASSERT(refcount_load(&cse->refs) == 1, 1225 ("%s: crypto session %p with %d refs", __func__, cse, 1226 refcount_load(&cse->refs))); 1227 cse_free(cse); 1228 } 1229 mtx_destroy(&fcr->lock); 1230 free(fcr, M_XDATA); 1231 } 1232 1233 static int 1234 crypto_open(struct cdev *dev, int oflags, int devtype, struct thread *td) 1235 { 1236 struct fcrypt *fcr; 1237 int error; 1238 1239 fcr = malloc(sizeof(struct fcrypt), M_XDATA, M_WAITOK | M_ZERO); 1240 TAILQ_INIT(&fcr->csessions); 1241 mtx_init(&fcr->lock, "fcrypt", NULL, MTX_DEF); 1242 error = devfs_set_cdevpriv(fcr, fcrypt_dtor); 1243 if (error) 1244 fcrypt_dtor(fcr); 1245 return (error); 1246 } 1247 1248 static int 1249 crypto_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, 1250 struct thread *td) 1251 { 1252 struct fcrypt *fcr; 1253 struct csession *cse; 1254 struct session2_op *sop; 1255 struct crypt_op *cop; 1256 struct crypt_aead *caead; 1257 uint32_t ses; 1258 int error = 0; 1259 union { 1260 struct session2_op sopc; 1261 #ifdef COMPAT_FREEBSD32 1262 struct crypt_op copc; 1263 struct crypt_aead aeadc; 1264 #endif 1265 } thunk; 1266 #ifdef COMPAT_FREEBSD32 1267 u_long cmd32; 1268 void *data32; 1269 1270 cmd32 = 0; 1271 data32 = NULL; 1272 switch (cmd) { 1273 case CIOCGSESSION32: 1274 cmd32 = cmd; 1275 data32 = data; 1276 cmd = CIOCGSESSION; 1277 data = (void *)&thunk.sopc; 1278 session_op_from_32((struct session_op32 *)data32, &thunk.sopc); 1279 break; 1280 case CIOCGSESSION232: 1281 cmd32 = cmd; 1282 data32 = data; 1283 cmd = CIOCGSESSION2; 1284 data = (void *)&thunk.sopc; 1285 session2_op_from_32((struct session2_op32 *)data32, 1286 &thunk.sopc); 1287 break; 1288 case CIOCCRYPT32: 1289 cmd32 = cmd; 1290 data32 = data; 1291 cmd = CIOCCRYPT; 1292 data = (void *)&thunk.copc; 1293 crypt_op_from_32((struct crypt_op32 *)data32, &thunk.copc); 1294 break; 1295 case CIOCCRYPTAEAD32: 1296 cmd32 = cmd; 1297 data32 = data; 1298 cmd = CIOCCRYPTAEAD; 1299 data = (void *)&thunk.aeadc; 1300 crypt_aead_from_32((struct crypt_aead32 *)data32, &thunk.aeadc); 1301 break; 1302 } 1303 #endif 1304 1305 devfs_get_cdevpriv((void **)&fcr); 1306 1307 switch (cmd) { 1308 #ifdef COMPAT_FREEBSD12 1309 case CRIOGET: 1310 /* 1311 * NB: This may fail in cases that the old 1312 * implementation did not if the current process has 1313 * restricted filesystem access (e.g. running in a 1314 * jail that does not expose /dev/crypto or in 1315 * capability mode). 1316 */ 1317 error = kern_openat(td, AT_FDCWD, "/dev/crypto", UIO_SYSSPACE, 1318 O_RDWR, 0); 1319 if (error == 0) 1320 *(uint32_t *)data = td->td_retval[0]; 1321 break; 1322 #endif 1323 case CIOCGSESSION: 1324 case CIOCGSESSION2: 1325 if (cmd == CIOCGSESSION) { 1326 session2_op_from_op((void *)data, &thunk.sopc); 1327 sop = &thunk.sopc; 1328 } else 1329 sop = (struct session2_op *)data; 1330 1331 error = cse_create(fcr, sop); 1332 if (cmd == CIOCGSESSION && error == 0) 1333 session2_op_to_op(sop, (void *)data); 1334 break; 1335 case CIOCFSESSION: 1336 ses = *(uint32_t *)data; 1337 if (!cse_delete(fcr, ses)) { 1338 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1339 return (EINVAL); 1340 } 1341 break; 1342 case CIOCCRYPT: 1343 cop = (struct crypt_op *)data; 1344 cse = cse_find(fcr, cop->ses); 1345 if (cse == NULL) { 1346 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1347 return (EINVAL); 1348 } 1349 error = cryptodev_op(cse, cop); 1350 cse_free(cse); 1351 break; 1352 case CIOCFINDDEV: 1353 error = cryptodev_find((struct crypt_find_op *)data); 1354 break; 1355 case CIOCCRYPTAEAD: 1356 caead = (struct crypt_aead *)data; 1357 cse = cse_find(fcr, caead->ses); 1358 if (cse == NULL) { 1359 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1360 return (EINVAL); 1361 } 1362 error = cryptodev_aead(cse, caead); 1363 cse_free(cse); 1364 break; 1365 default: 1366 error = EINVAL; 1367 SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); 1368 break; 1369 } 1370 1371 #ifdef COMPAT_FREEBSD32 1372 switch (cmd32) { 1373 case CIOCGSESSION32: 1374 if (error == 0) 1375 session_op_to_32((void *)data, data32); 1376 break; 1377 case CIOCGSESSION232: 1378 if (error == 0) 1379 session2_op_to_32((void *)data, data32); 1380 break; 1381 case CIOCCRYPT32: 1382 if (error == 0) 1383 crypt_op_to_32((void *)data, data32); 1384 break; 1385 case CIOCCRYPTAEAD32: 1386 if (error == 0) 1387 crypt_aead_to_32((void *)data, data32); 1388 break; 1389 } 1390 #endif 1391 return (error); 1392 } 1393 1394 static struct cdevsw crypto_cdevsw = { 1395 .d_version = D_VERSION, 1396 .d_open = crypto_open, 1397 .d_ioctl = crypto_ioctl, 1398 .d_name = "crypto", 1399 }; 1400 static struct cdev *crypto_dev; 1401 1402 /* 1403 * Initialization code, both for static and dynamic loading. 1404 */ 1405 static int 1406 cryptodev_modevent(module_t mod, int type, void *unused) 1407 { 1408 switch (type) { 1409 case MOD_LOAD: 1410 if (bootverbose) 1411 printf("crypto: <crypto device>\n"); 1412 crypto_dev = make_dev(&crypto_cdevsw, 0, 1413 UID_ROOT, GID_WHEEL, 0666, 1414 "crypto"); 1415 return 0; 1416 case MOD_UNLOAD: 1417 /*XXX disallow if active sessions */ 1418 destroy_dev(crypto_dev); 1419 return 0; 1420 } 1421 return EINVAL; 1422 } 1423 1424 static moduledata_t cryptodev_mod = { 1425 "cryptodev", 1426 cryptodev_modevent, 1427 0 1428 }; 1429 MODULE_VERSION(cryptodev, 1); 1430 DECLARE_MODULE(cryptodev, cryptodev_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 1431 MODULE_DEPEND(cryptodev, crypto, 1, 1, 1); 1432 MODULE_DEPEND(cryptodev, zlib, 1, 1, 1); 1433