cryptodev.c revision 1.118
1 /* $NetBSD: cryptodev.c,v 1.118 2022/05/22 11:34:29 riastradh Exp $ */ 2 /* $FreeBSD: src/sys/opencrypto/cryptodev.c,v 1.4.2.4 2003/06/03 00:09:02 sam Exp $ */ 3 /* $OpenBSD: cryptodev.c,v 1.53 2002/07/10 22:21:30 mickey Exp $ */ 4 5 /*- 6 * Copyright (c) 2008 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Coyote Point Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 2001 Theo de Raadt 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * Effort sponsored in part by the Defense Advanced Research Projects 61 * Agency (DARPA) and Air Force Research Laboratory, Air Force 62 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 63 * 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: cryptodev.c,v 1.118 2022/05/22 11:34:29 riastradh Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kmem.h> 72 #include <sys/malloc.h> 73 #include <sys/mbuf.h> 74 #include <sys/pool.h> 75 #include <sys/sysctl.h> 76 #include <sys/file.h> 77 #include <sys/filedesc.h> 78 #include <sys/errno.h> 79 #include <sys/md5.h> 80 #include <sys/sha1.h> 81 #include <sys/conf.h> 82 #include <sys/device.h> 83 #include <sys/kauth.h> 84 #include <sys/select.h> 85 #include <sys/poll.h> 86 #include <sys/atomic.h> 87 #include <sys/stat.h> 88 #include <sys/module.h> 89 #include <sys/compat_stub.h> 90 91 #ifdef _KERNEL_OPT 92 #include "opt_ocf.h" 93 #include "opt_compat_netbsd.h" 94 #endif 95 96 #include <opencrypto/cryptodev.h> 97 #include <opencrypto/ocryptodev.h> 98 #include <opencrypto/cryptodev_internal.h> 99 #include <opencrypto/xform.h> 100 101 #include "ioconf.h" 102 103 kmutex_t cryptodev_mtx; 104 105 struct csession { 106 TAILQ_ENTRY(csession) next; 107 u_int64_t sid; 108 u_int32_t ses; 109 110 u_int32_t cipher; /* note: shares name space in crd_alg */ 111 const struct enc_xform *txform; 112 u_int32_t mac; /* note: shares name space in crd_alg */ 113 const struct auth_hash *thash; 114 u_int32_t comp_alg; /* note: shares name space in crd_alg */ 115 const struct comp_algo *tcomp; 116 117 void * key; 118 int keylen; 119 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 120 121 void * mackey; 122 int mackeylen; 123 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 124 125 struct iovec iovec[1]; /* user requests never have more */ 126 struct uio uio; 127 int error; 128 }; 129 130 struct fcrypt { 131 TAILQ_HEAD(csessionlist, csession) csessions; 132 TAILQ_HEAD(crprethead, cryptop) crp_ret_mq; 133 TAILQ_HEAD(krprethead, cryptkop) crp_ret_mkq; 134 int sesn; 135 struct selinfo sinfo; 136 u_int32_t requestid; 137 struct timespec atime; 138 struct timespec mtime; 139 struct timespec btime; 140 }; 141 142 /* For our fixed-size allocations */ 143 static struct pool fcrpl; 144 static struct pool csepl; 145 146 /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ 147 static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l); 148 static int cryptoread(dev_t dev, struct uio *uio, int ioflag); 149 static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); 150 static int cryptoselect(dev_t dev, int rw, struct lwp *l); 151 152 static int crypto_refcount = 0; /* Prevent detaching while in use */ 153 154 /* Declaration of cloned-device (per-ctxt) entrypoints */ 155 static int cryptof_read(struct file *, off_t *, struct uio *, 156 kauth_cred_t, int); 157 static int cryptof_write(struct file *, off_t *, struct uio *, 158 kauth_cred_t, int); 159 static int cryptof_ioctl(struct file *, u_long, void *); 160 static int cryptof_close(struct file *); 161 static int cryptof_poll(struct file *, int); 162 static int cryptof_stat(struct file *, struct stat *); 163 164 static const struct fileops cryptofops = { 165 .fo_name = "cryptof", 166 .fo_read = cryptof_read, 167 .fo_write = cryptof_write, 168 .fo_ioctl = cryptof_ioctl, 169 .fo_fcntl = fnullop_fcntl, 170 .fo_poll = cryptof_poll, 171 .fo_stat = cryptof_stat, 172 .fo_close = cryptof_close, 173 .fo_kqfilter = fnullop_kqfilter, 174 .fo_restart = fnullop_restart, 175 }; 176 177 struct csession *cryptodev_csefind(struct fcrypt *, u_int); 178 static struct csession *csefind(struct fcrypt *, u_int); 179 static int csedelete(struct fcrypt *, struct csession *); 180 static struct csession *cseadd(struct fcrypt *, struct csession *); 181 static struct csession *csecreate(struct fcrypt *, u_int64_t, void *, 182 u_int64_t, void *, u_int64_t, u_int32_t, u_int32_t, u_int32_t, 183 const struct enc_xform *, const struct auth_hash *, 184 const struct comp_algo *); 185 static int csefree(struct csession *); 186 187 static int cryptodev_key(struct crypt_kop *); 188 static int cryptodev_mkey(struct fcrypt *, struct crypt_n_kop *, int); 189 static int cryptodev_msessionfin(struct fcrypt *, int, u_int32_t *); 190 191 static void cryptodev_cb(struct cryptop *); 192 static void cryptodevkey_cb(struct cryptkop *); 193 194 static void cryptodev_mcb(struct cryptop *); 195 static void cryptodevkey_mcb(struct cryptkop *); 196 197 static int cryptodev_getmstatus(struct fcrypt *, struct crypt_result *, 198 int); 199 static int cryptodev_getstatus(struct fcrypt *, struct crypt_result *); 200 201 /* 202 * sysctl-able control variables for /dev/crypto now defined in crypto.c: 203 * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. 204 */ 205 206 /* ARGSUSED */ 207 int 208 cryptof_read(file_t *fp, off_t *poff, 209 struct uio *uio, kauth_cred_t cred, int flags) 210 { 211 return EIO; 212 } 213 214 /* ARGSUSED */ 215 int 216 cryptof_write(file_t *fp, off_t *poff, 217 struct uio *uio, kauth_cred_t cred, int flags) 218 { 219 return EIO; 220 } 221 222 /* ARGSUSED */ 223 int 224 cryptof_ioctl(struct file *fp, u_long cmd, void *data) 225 { 226 struct fcrypt *fcr = fp->f_fcrypt; 227 struct csession *cse; 228 struct session_op *sop; 229 struct session_n_op *snop; 230 struct crypt_op *cop; 231 struct crypt_mop *mop; 232 struct crypt_mkop *mkop; 233 struct crypt_n_op *cnop; 234 struct crypt_n_kop *knop; 235 struct crypt_sgop *sgop; 236 struct crypt_sfop *sfop; 237 struct cryptret *crypt_ret; 238 struct crypt_result *crypt_res; 239 u_int32_t ses; 240 u_int32_t *sesid; 241 int error = 0; 242 size_t count; 243 244 /* backwards compatibility */ 245 file_t *criofp; 246 struct fcrypt *criofcr; 247 int criofd; 248 249 mutex_enter(&cryptodev_mtx); 250 getnanotime(&fcr->atime); 251 mutex_exit(&cryptodev_mtx); 252 253 switch (cmd) { 254 case CRIOGET: /* XXX deprecated, remove after 5.0 */ 255 if ((error = fd_allocfile(&criofp, &criofd)) != 0) 256 return error; 257 criofcr = pool_get(&fcrpl, PR_WAITOK); 258 mutex_enter(&cryptodev_mtx); 259 TAILQ_INIT(&criofcr->csessions); 260 TAILQ_INIT(&criofcr->crp_ret_mq); 261 TAILQ_INIT(&criofcr->crp_ret_mkq); 262 selinit(&criofcr->sinfo); 263 264 /* 265 * Don't ever return session 0, to allow detection of 266 * failed creation attempts with multi-create ioctl. 267 */ 268 criofcr->sesn = 1; 269 criofcr->requestid = 1; 270 crypto_refcount++; 271 mutex_exit(&cryptodev_mtx); 272 (void)fd_clone(criofp, criofd, (FREAD|FWRITE), 273 &cryptofops, criofcr); 274 *(u_int32_t *)data = criofd; 275 return error; 276 break; 277 case CIOCGSESSION: 278 sop = (struct session_op *)data; 279 error = cryptodev_session(fcr, sop); 280 break; 281 case CIOCNGSESSION: 282 sgop = (struct crypt_sgop *)data; 283 if (sgop->count <= 0 284 || SIZE_MAX / sizeof(struct session_n_op) <= sgop->count) { 285 error = EINVAL; 286 break; 287 } 288 snop = kmem_alloc((sgop->count * 289 sizeof(struct session_n_op)), KM_SLEEP); 290 error = copyin(sgop->sessions, snop, sgop->count * 291 sizeof(struct session_n_op)); 292 if (error) { 293 goto mbail; 294 } 295 296 mutex_enter(&cryptodev_mtx); 297 fcr->mtime = fcr->atime; 298 mutex_exit(&cryptodev_mtx); 299 error = cryptodev_msession(fcr, snop, sgop->count); 300 if (error) { 301 goto mbail; 302 } 303 304 error = copyout(snop, sgop->sessions, sgop->count * 305 sizeof(struct session_n_op)); 306 mbail: 307 kmem_free(snop, sgop->count * sizeof(struct session_n_op)); 308 break; 309 case CIOCFSESSION: 310 mutex_enter(&cryptodev_mtx); 311 fcr->mtime = fcr->atime; 312 ses = *(u_int32_t *)data; 313 cse = csefind(fcr, ses); 314 if (cse == NULL) { 315 mutex_exit(&cryptodev_mtx); 316 return EINVAL; 317 } 318 csedelete(fcr, cse); 319 mutex_exit(&cryptodev_mtx); 320 error = csefree(cse); 321 break; 322 case CIOCNFSESSION: 323 mutex_enter(&cryptodev_mtx); 324 fcr->mtime = fcr->atime; 325 mutex_exit(&cryptodev_mtx); 326 sfop = (struct crypt_sfop *)data; 327 if (sfop->count <= 0 328 || SIZE_MAX / sizeof(u_int32_t) <= sfop->count) { 329 error = EINVAL; 330 break; 331 } 332 sesid = kmem_alloc((sfop->count * sizeof(u_int32_t)), 333 KM_SLEEP); 334 error = copyin(sfop->sesid, sesid, 335 (sfop->count * sizeof(u_int32_t))); 336 if (!error) { 337 error = cryptodev_msessionfin(fcr, sfop->count, sesid); 338 } 339 kmem_free(sesid, (sfop->count * sizeof(u_int32_t))); 340 break; 341 case CIOCCRYPT: 342 mutex_enter(&cryptodev_mtx); 343 fcr->mtime = fcr->atime; 344 cop = (struct crypt_op *)data; 345 cse = csefind(fcr, cop->ses); 346 mutex_exit(&cryptodev_mtx); 347 if (cse == NULL) { 348 DPRINTF("csefind failed\n"); 349 return EINVAL; 350 } 351 error = cryptodev_op(cse, cop, curlwp); 352 DPRINTF("cryptodev_op error = %d\n", error); 353 break; 354 case CIOCNCRYPTM: 355 mutex_enter(&cryptodev_mtx); 356 fcr->mtime = fcr->atime; 357 mutex_exit(&cryptodev_mtx); 358 mop = (struct crypt_mop *)data; 359 if (mop->count <= 0 360 || SIZE_MAX / sizeof(struct crypt_n_op) <= mop->count) { 361 error = EINVAL; 362 break; 363 } 364 cnop = kmem_alloc((mop->count * sizeof(struct crypt_n_op)), 365 KM_SLEEP); 366 error = copyin(mop->reqs, cnop, 367 (mop->count * sizeof(struct crypt_n_op))); 368 if(!error) { 369 error = cryptodev_mop(fcr, cnop, mop->count, curlwp); 370 if (!error) { 371 error = copyout(cnop, mop->reqs, 372 (mop->count * sizeof(struct crypt_n_op))); 373 } 374 } 375 kmem_free(cnop, (mop->count * sizeof(struct crypt_n_op))); 376 break; 377 case CIOCKEY: 378 error = cryptodev_key((struct crypt_kop *)data); 379 DPRINTF("cryptodev_key error = %d\n", error); 380 break; 381 case CIOCNFKEYM: 382 mutex_enter(&cryptodev_mtx); 383 fcr->mtime = fcr->atime; 384 mutex_exit(&cryptodev_mtx); 385 mkop = (struct crypt_mkop *)data; 386 if (mkop->count <= 0 387 || SIZE_MAX / sizeof(struct crypt_n_kop) <= mkop->count) { 388 error = EINVAL; 389 break; 390 } 391 knop = kmem_alloc((mkop->count * sizeof(struct crypt_n_kop)), 392 KM_SLEEP); 393 error = copyin(mkop->reqs, knop, 394 (mkop->count * sizeof(struct crypt_n_kop))); 395 if (!error) { 396 error = cryptodev_mkey(fcr, knop, mkop->count); 397 if (!error) 398 error = copyout(knop, mkop->reqs, 399 (mkop->count * sizeof(struct crypt_n_kop))); 400 } 401 kmem_free(knop, (mkop->count * sizeof(struct crypt_n_kop))); 402 break; 403 case CIOCASYMFEAT: 404 error = crypto_getfeat((int *)data); 405 break; 406 case CIOCNCRYPTRETM: 407 mutex_enter(&cryptodev_mtx); 408 fcr->mtime = fcr->atime; 409 mutex_exit(&cryptodev_mtx); 410 crypt_ret = (struct cryptret *)data; 411 count = crypt_ret->count; 412 if (count <= 0 413 || SIZE_MAX / sizeof(struct crypt_result) <= count) { 414 error = EINVAL; 415 break; 416 } 417 crypt_res = kmem_alloc((count * sizeof(struct crypt_result)), 418 KM_SLEEP); 419 error = copyin(crypt_ret->results, crypt_res, 420 (count * sizeof(struct crypt_result))); 421 if (error) 422 goto reterr; 423 crypt_ret->count = cryptodev_getmstatus(fcr, crypt_res, 424 crypt_ret->count); 425 /* sanity check count */ 426 if (crypt_ret->count > count) { 427 printf("%s.%d: error returned count %zd > original " 428 " count %zd\n", 429 __FILE__, __LINE__, crypt_ret->count, count); 430 crypt_ret->count = count; 431 432 } 433 error = copyout(crypt_res, crypt_ret->results, 434 (crypt_ret->count * sizeof(struct crypt_result))); 435 reterr: 436 kmem_free(crypt_res, (count * sizeof(struct crypt_result))); 437 break; 438 case CIOCNCRYPTRET: 439 error = cryptodev_getstatus(fcr, (struct crypt_result *)data); 440 break; 441 default: 442 /* Check for backward compatible commands */ 443 444 MODULE_HOOK_CALL(ocryptof_50_hook, (fp, cmd, data), 445 enosys(), error); 446 if (error == ENOSYS) 447 error = EINVAL; 448 return error; 449 } 450 return error; 451 } 452 453 int 454 cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l) 455 { 456 struct cryptop *crp = NULL; 457 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 458 int error; 459 int iov_len = cop->len; 460 int flags=0; 461 int dst_len; /* copyout size */ 462 463 if (cop->len > 256*1024-4) 464 return E2BIG; 465 466 if (cse->txform) { 467 if (cop->len < cse->txform->blocksize 468 + (cop->iv ? 0 : cse->txform->ivsize) || 469 (cop->len - (cop->iv ? 0 : cse->txform->ivsize)) 470 % cse->txform->blocksize != 0) 471 return EINVAL; 472 } 473 474 if (cse->tcomp == NULL && cse->txform == NULL && cse->thash == NULL) 475 return EINVAL; 476 477 DPRINTF("cryptodev_op[%u]: iov_len %d\n", 478 CRYPTO_SESID2LID(cse->sid), iov_len); 479 if ((cse->tcomp) && cop->dst_len) { 480 if (iov_len < cop->dst_len) { 481 /* Need larger iov to deal with decompress */ 482 iov_len = cop->dst_len; 483 } 484 DPRINTF("cryptodev_op: iov_len -> %d for decompress\n", iov_len); 485 } 486 487 (void)memset(&cse->uio, 0, sizeof(cse->uio)); 488 cse->uio.uio_iovcnt = 1; 489 cse->uio.uio_resid = 0; 490 cse->uio.uio_rw = UIO_WRITE; 491 cse->uio.uio_iov = cse->iovec; 492 UIO_SETUP_SYSSPACE(&cse->uio); 493 memset(&cse->iovec, 0, sizeof(cse->iovec)); 494 495 /* the iov needs to be big enough to handle the uncompressed 496 * data.... */ 497 cse->uio.uio_iov[0].iov_len = iov_len; 498 if (iov_len > 0) 499 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 500 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 501 DPRINTF("lid[%u]: uio.iov_base %p malloced %d bytes\n", 502 CRYPTO_SESID2LID(cse->sid), 503 cse->uio.uio_iov[0].iov_base, iov_len); 504 505 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 506 if (crp == NULL) { 507 error = ENOMEM; 508 goto bail; 509 } 510 DPRINTF("lid[%u]: crp %p\n", CRYPTO_SESID2LID(cse->sid), crp); 511 512 /* crds are always ordered tcomp, thash, then txform */ 513 /* with optional missing links */ 514 515 /* XXX: If we're going to compress then hash or encrypt, we need 516 * to be able to pass on the new size of the data. 517 */ 518 519 if (cse->tcomp) { 520 crdc = crp->crp_desc; 521 } 522 523 if (cse->thash) { 524 crda = crdc ? crdc->crd_next : crp->crp_desc; 525 if (cse->txform && crda) 526 crde = crda->crd_next; 527 } else { 528 if (cse->txform) { 529 crde = crdc ? crdc->crd_next : crp->crp_desc; 530 } else if (!cse->tcomp) { 531 error = EINVAL; 532 goto bail; 533 } 534 } 535 536 DPRINTF("ocf[%u]: iov_len %zu, cop->len %u\n", 537 CRYPTO_SESID2LID(cse->sid), 538 cse->uio.uio_iov[0].iov_len, 539 cop->len); 540 541 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 542 { 543 printf("copyin failed %s %d \n", (char *)cop->src, error); 544 goto bail; 545 } 546 547 if (crdc) { 548 switch (cop->op) { 549 case COP_COMP: 550 crdc->crd_flags |= CRD_F_COMP; 551 break; 552 case COP_DECOMP: 553 crdc->crd_flags &= ~CRD_F_COMP; 554 break; 555 default: 556 break; 557 } 558 /* more data to follow? */ 559 if (cop->flags & COP_F_MORE) { 560 flags |= CRYPTO_F_MORE; 561 } 562 crdc->crd_len = cop->len; 563 crdc->crd_inject = 0; 564 565 crdc->crd_alg = cse->comp_alg; 566 crdc->crd_key = NULL; 567 crdc->crd_klen = 0; 568 DPRINTF("lid[%u]: crdc setup for comp_alg %d.\n", 569 CRYPTO_SESID2LID(cse->sid), crdc->crd_alg); 570 } 571 572 if (crda) { 573 crda->crd_skip = 0; 574 crda->crd_len = cop->len; 575 crda->crd_inject = 0; /* ??? */ 576 577 crda->crd_alg = cse->mac; 578 crda->crd_key = cse->mackey; 579 crda->crd_klen = cse->mackeylen * 8; 580 DPRINTF("crda setup for mac %d.\n", crda->crd_alg); 581 } 582 583 if (crde) { 584 switch (cop->op) { 585 case COP_ENCRYPT: 586 crde->crd_flags |= CRD_F_ENCRYPT; 587 break; 588 case COP_DECRYPT: 589 crde->crd_flags &= ~CRD_F_ENCRYPT; 590 break; 591 default: 592 break; 593 } 594 crde->crd_len = cop->len; 595 crde->crd_inject = 0; 596 597 if (cse->cipher == CRYPTO_AES_GCM_16 && crda) 598 crda->crd_len = 0; 599 else if (cse->cipher == CRYPTO_AES_GMAC) 600 crde->crd_len = 0; 601 602 crde->crd_alg = cse->cipher; 603 crde->crd_key = cse->key; 604 crde->crd_klen = cse->keylen * 8; 605 DPRINTF("crde setup for cipher %d.\n", crde->crd_alg); 606 } 607 608 609 crp->crp_ilen = cop->len; 610 crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | flags; 611 crp->crp_buf = (void *)&cse->uio; 612 crp->crp_callback = cryptodev_cb; 613 crp->crp_sid = cse->sid; 614 crp->crp_opaque = cse; 615 616 if (cop->iv) { 617 if (crde == NULL) { 618 error = EINVAL; 619 goto bail; 620 } 621 if (cse->txform->ivsize == 0) { 622 error = EINVAL; 623 goto bail; 624 } 625 if ((error = copyin(cop->iv, cse->tmp_iv, 626 cse->txform->ivsize))) 627 goto bail; 628 (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); 629 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 630 crde->crd_skip = 0; 631 } else if (crde) { 632 if (cse->txform->ivsize == 0) { 633 crde->crd_skip = 0; 634 } else { 635 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 636 crde->crd_flags |= CRD_F_IV_PRESENT; 637 crde->crd_skip = cse->txform->ivsize; 638 crde->crd_len -= cse->txform->ivsize; 639 } 640 } 641 642 if (cop->mac) { 643 if (crda == NULL) { 644 error = EINVAL; 645 goto bail; 646 } 647 crp->crp_mac = cse->tmp_mac; 648 } 649 650 cv_init(&crp->crp_cv, "crydev"); 651 error = crypto_dispatch(crp); 652 if (error) { 653 DPRINTF("not waiting, error.\n"); 654 cv_destroy(&crp->crp_cv); 655 goto bail; 656 } 657 658 mutex_enter(&cryptodev_mtx); 659 while (!(crp->crp_devflags & CRYPTODEV_F_RET)) { 660 DPRINTF("cse->sid[%d]: sleeping on cv %p for crp %p\n", 661 (uint32_t)cse->sid, &crp->crp_cv, crp); 662 cv_wait(&crp->crp_cv, &cryptodev_mtx); /* XXX cv_wait_sig? */ 663 } 664 mutex_exit(&cryptodev_mtx); 665 cv_destroy(&crp->crp_cv); 666 667 if (crp->crp_etype != 0) { 668 DPRINTF("crp_etype %d\n", crp->crp_etype); 669 error = crp->crp_etype; 670 goto bail; 671 } 672 673 if (cse->error) { 674 DPRINTF("cse->error %d\n", cse->error); 675 error = cse->error; 676 goto bail; 677 } 678 679 dst_len = crp->crp_ilen; 680 /* let the user know how much data was returned */ 681 if (crp->crp_olen) { 682 if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { 683 error = ENOSPC; 684 goto bail; 685 } 686 dst_len = cop->dst_len = crp->crp_olen; 687 } 688 689 if (cop->dst) { 690 DPRINTF("copyout %d bytes to %p\n", dst_len, cop->dst); 691 } 692 if (cop->dst && 693 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 694 { 695 DPRINTF("copyout error %d\n", error); 696 goto bail; 697 } 698 699 if (cop->mac && 700 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 701 DPRINTF("mac copyout error %d\n", error); 702 goto bail; 703 } 704 705 706 bail: 707 if (crp) { 708 crypto_freereq(crp); 709 } 710 if (cse->uio.uio_iov[0].iov_base) { 711 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 712 } 713 714 return error; 715 } 716 717 static void 718 cryptodev_cb(struct cryptop *crp) 719 { 720 struct csession *cse = crp->crp_opaque; 721 int error; 722 723 if ((error = crp->crp_etype) == EAGAIN) { 724 error = crypto_dispatch(crp); 725 if (error == 0) 726 return; 727 } 728 729 mutex_enter(&cryptodev_mtx); 730 cse->error = error; 731 crp->crp_devflags |= CRYPTODEV_F_RET; 732 cv_signal(&crp->crp_cv); 733 mutex_exit(&cryptodev_mtx); 734 } 735 736 static void 737 cryptodev_mcb(struct cryptop *crp) 738 { 739 struct csession *cse = crp->crp_opaque; 740 int error; 741 742 if ((error = crp->crp_etype) == EAGAIN) { 743 error = crypto_dispatch(crp); 744 if (error == 0) 745 return; 746 } 747 748 mutex_enter(&cryptodev_mtx); 749 cse->error = error; 750 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 751 selnotify(&crp->fcrp->sinfo, 0, 0); 752 mutex_exit(&cryptodev_mtx); 753 } 754 755 static void 756 cryptodevkey_cb(struct cryptkop *krp) 757 { 758 759 mutex_enter(&cryptodev_mtx); 760 krp->krp_devflags |= CRYPTODEV_F_RET; 761 cv_signal(&krp->krp_cv); 762 mutex_exit(&cryptodev_mtx); 763 } 764 765 static void 766 cryptodevkey_mcb(struct cryptkop *krp) 767 { 768 769 mutex_enter(&cryptodev_mtx); 770 cv_signal(&krp->krp_cv); 771 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 772 selnotify(&krp->fcrp->sinfo, 0, 0); 773 mutex_exit(&cryptodev_mtx); 774 } 775 776 static int 777 cryptodev_key(struct crypt_kop *kop) 778 { 779 struct cryptkop *krp = NULL; 780 int error = EINVAL; 781 int in, out, size, i; 782 783 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 784 return EFBIG; 785 786 in = kop->crk_iparams; 787 out = kop->crk_oparams; 788 switch (kop->crk_op) { 789 case CRK_MOD_EXP: 790 if (in == 3 && out == 1) 791 break; 792 return EINVAL; 793 case CRK_MOD_EXP_CRT: 794 if (in == 6 && out == 1) 795 break; 796 return EINVAL; 797 case CRK_DSA_SIGN: 798 if (in == 5 && out == 2) 799 break; 800 return EINVAL; 801 case CRK_DSA_VERIFY: 802 if (in == 7 && out == 0) 803 break; 804 return EINVAL; 805 case CRK_DH_COMPUTE_KEY: 806 if (in == 3 && out == 1) 807 break; 808 return EINVAL; 809 case CRK_MOD_ADD: 810 if (in == 3 && out == 1) 811 break; 812 return EINVAL; 813 case CRK_MOD_ADDINV: 814 if (in == 2 && out == 1) 815 break; 816 return EINVAL; 817 case CRK_MOD_SUB: 818 if (in == 3 && out == 1) 819 break; 820 return EINVAL; 821 case CRK_MOD_MULT: 822 if (in == 3 && out == 1) 823 break; 824 return EINVAL; 825 case CRK_MOD_MULTINV: 826 if (in == 2 && out == 1) 827 break; 828 return EINVAL; 829 case CRK_MOD: 830 if (in == 2 && out == 1) 831 break; 832 return EINVAL; 833 default: 834 return EINVAL; 835 } 836 837 krp = crypto_kgetreq(1, PR_WAITOK); 838 if (krp == NULL) { 839 /* limited by opencrypto.crypto_ret_kq.maxlen */ 840 return ENOMEM; 841 } 842 (void)memset(krp, 0, sizeof *krp); 843 cv_init(&krp->krp_cv, "crykdev"); 844 krp->krp_op = kop->crk_op; 845 krp->krp_status = kop->crk_status; 846 krp->krp_iparams = kop->crk_iparams; 847 krp->krp_oparams = kop->crk_oparams; 848 krp->krp_status = 0; 849 krp->krp_callback = cryptodevkey_cb; 850 851 for (i = 0; i < CRK_MAXPARAM; i++) 852 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 853 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 854 size = (krp->krp_param[i].crp_nbits + 7) / 8; 855 if (size == 0) 856 continue; 857 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 858 if (i >= krp->krp_iparams) 859 continue; 860 error = copyin(kop->crk_param[i].crp_p, 861 krp->krp_param[i].crp_p, size); 862 if (error) 863 goto fail; 864 } 865 866 error = crypto_kdispatch(krp); 867 if (error != 0) { 868 goto fail; 869 } 870 871 mutex_enter(&cryptodev_mtx); 872 while (!(krp->krp_devflags & CRYPTODEV_F_RET)) { 873 cv_wait(&krp->krp_cv, &cryptodev_mtx); /* XXX cv_wait_sig? */ 874 } 875 mutex_exit(&cryptodev_mtx); 876 877 if (krp->krp_status != 0) { 878 DPRINTF("krp->krp_status 0x%08x\n", krp->krp_status); 879 error = krp->krp_status; 880 goto fail; 881 } 882 883 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 884 i++) { 885 size = (krp->krp_param[i].crp_nbits + 7) / 8; 886 if (size == 0) 887 continue; 888 error = copyout(krp->krp_param[i].crp_p, 889 kop->crk_param[i].crp_p, size); 890 if (error) { 891 DPRINTF("copyout oparam %d failed, " 892 "error=%d\n", i-krp->krp_iparams, error); 893 goto fail; 894 } 895 } 896 897 fail: 898 kop->crk_status = krp->krp_status; 899 for (i = 0; i < CRK_MAXPARAM; i++) { 900 struct crparam *kp = &(krp->krp_param[i]); 901 if (krp->krp_param[i].crp_p) { 902 size = (kp->crp_nbits + 7) / 8; 903 KASSERT(size > 0); 904 (void)memset(kp->crp_p, 0, size); 905 kmem_free(kp->crp_p, size); 906 } 907 } 908 cv_destroy(&krp->krp_cv); 909 crypto_kfreereq(krp); 910 DPRINTF("error=0x%08x\n", error); 911 return error; 912 } 913 914 /* ARGSUSED */ 915 static int 916 cryptof_close(struct file *fp) 917 { 918 struct fcrypt *fcr = fp->f_fcrypt; 919 struct csession *cse; 920 921 mutex_enter(&cryptodev_mtx); 922 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 923 TAILQ_REMOVE(&fcr->csessions, cse, next); 924 mutex_exit(&cryptodev_mtx); 925 (void)csefree(cse); 926 mutex_enter(&cryptodev_mtx); 927 } 928 seldestroy(&fcr->sinfo); 929 fp->f_fcrypt = NULL; 930 crypto_refcount--; 931 mutex_exit(&cryptodev_mtx); 932 933 pool_put(&fcrpl, fcr); 934 return 0; 935 } 936 937 /* needed for compatibility module */ 938 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 939 { 940 return csefind(fcr, ses); 941 } 942 943 /* csefind: call with cryptodev_mtx held. */ 944 static struct csession * 945 csefind(struct fcrypt *fcr, u_int ses) 946 { 947 struct csession *cse, *cnext, *ret = NULL; 948 949 KASSERT(mutex_owned(&cryptodev_mtx)); 950 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 951 if (cse->ses == ses) 952 ret = cse; 953 954 return ret; 955 } 956 957 /* csedelete: call with cryptodev_mtx held. */ 958 static int 959 csedelete(struct fcrypt *fcr, struct csession *cse_del) 960 { 961 struct csession *cse, *cnext; 962 int ret = 0; 963 964 KASSERT(mutex_owned(&cryptodev_mtx)); 965 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 966 if (cse == cse_del) { 967 TAILQ_REMOVE(&fcr->csessions, cse, next); 968 ret = 1; 969 } 970 } 971 return ret; 972 } 973 974 static struct csession * 975 cseadd(struct fcrypt *fcr, struct csession *cse) 976 { 977 mutex_enter(&cryptodev_mtx); 978 /* don't let session ID wrap! */ 979 if (fcr->sesn + 1 == 0) return NULL; 980 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 981 cse->ses = fcr->sesn++; 982 mutex_exit(&cryptodev_mtx); 983 return cse; 984 } 985 986 static struct csession * 987 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 988 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 989 u_int32_t comp_alg, const struct enc_xform *txform, 990 const struct auth_hash *thash, const struct comp_algo *tcomp) 991 { 992 struct csession *cse; 993 994 cse = pool_get(&csepl, PR_NOWAIT); 995 if (cse == NULL) 996 return NULL; 997 cse->key = key; 998 cse->keylen = keylen/8; 999 cse->mackey = mackey; 1000 cse->mackeylen = mackeylen/8; 1001 cse->sid = sid; 1002 cse->cipher = cipher; 1003 cse->mac = mac; 1004 cse->comp_alg = comp_alg; 1005 cse->txform = txform; 1006 cse->thash = thash; 1007 cse->tcomp = tcomp; 1008 cse->error = 0; 1009 if (cseadd(fcr, cse)) 1010 return cse; 1011 else { 1012 pool_put(&csepl, cse); 1013 return NULL; 1014 } 1015 } 1016 1017 static int 1018 csefree(struct csession *cse) 1019 { 1020 int error; 1021 1022 error = crypto_freesession(cse->sid); 1023 if (cse->key) 1024 free(cse->key, M_XDATA); 1025 if (cse->mackey) 1026 free(cse->mackey, M_XDATA); 1027 pool_put(&csepl, cse); 1028 return error; 1029 } 1030 1031 static int 1032 cryptoopen(dev_t dev, int flag, int mode, 1033 struct lwp *l) 1034 { 1035 file_t *fp; 1036 struct fcrypt *fcr; 1037 int fd, error; 1038 1039 if (crypto_usercrypto == 0) 1040 return ENXIO; 1041 1042 if ((error = fd_allocfile(&fp, &fd)) != 0) 1043 return error; 1044 1045 fcr = pool_get(&fcrpl, PR_WAITOK); 1046 getnanotime(&fcr->btime); 1047 fcr->atime = fcr->mtime = fcr->btime; 1048 mutex_enter(&cryptodev_mtx); 1049 TAILQ_INIT(&fcr->csessions); 1050 TAILQ_INIT(&fcr->crp_ret_mq); 1051 TAILQ_INIT(&fcr->crp_ret_mkq); 1052 selinit(&fcr->sinfo); 1053 /* 1054 * Don't ever return session 0, to allow detection of 1055 * failed creation attempts with multi-create ioctl. 1056 */ 1057 fcr->sesn = 1; 1058 fcr->requestid = 1; 1059 crypto_refcount++; 1060 mutex_exit(&cryptodev_mtx); 1061 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1062 } 1063 1064 static int 1065 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1066 { 1067 return EIO; 1068 } 1069 1070 static int 1071 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1072 { 1073 return EIO; 1074 } 1075 1076 int 1077 cryptoselect(dev_t dev, int rw, struct lwp *l) 1078 { 1079 return 0; 1080 } 1081 1082 /*static*/ 1083 struct cdevsw crypto_cdevsw = { 1084 .d_open = cryptoopen, 1085 .d_close = noclose, 1086 .d_read = cryptoread, 1087 .d_write = cryptowrite, 1088 .d_ioctl = noioctl, 1089 .d_stop = nostop, 1090 .d_tty = notty, 1091 .d_poll = cryptoselect /*nopoll*/, 1092 .d_mmap = nommap, 1093 .d_kqfilter = nokqfilter, 1094 .d_discard = nodiscard, 1095 .d_flag = D_OTHER 1096 }; 1097 1098 int 1099 cryptodev_mop(struct fcrypt *fcr, 1100 struct crypt_n_op * cnop, 1101 int count, struct lwp *l) 1102 { 1103 struct cryptop *crp = NULL; 1104 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1105 int req, error=0; 1106 struct csession *cse; 1107 int flags=0; 1108 int iov_len; 1109 1110 for (req = 0; req < count; req++) { 1111 mutex_enter(&cryptodev_mtx); 1112 cse = csefind(fcr, cnop[req].ses); 1113 if (cse == NULL) { 1114 DPRINTF("csefind failed\n"); 1115 cnop[req].status = EINVAL; 1116 mutex_exit(&cryptodev_mtx); 1117 continue; 1118 } 1119 mutex_exit(&cryptodev_mtx); 1120 1121 if (cnop[req].len > 256*1024-4) { 1122 DPRINTF("length failed\n"); 1123 cnop[req].status = EINVAL; 1124 continue; 1125 } 1126 if (cse->txform) { 1127 if (cnop[req].len < cse->txform->blocksize - 1128 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1129 (cnop[req].len - 1130 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1131 % cse->txform->blocksize) { 1132 cnop[req].status = EINVAL; 1133 continue; 1134 } 1135 } 1136 1137 if (cse->txform == NULL && 1138 cse->thash == NULL && 1139 cse->tcomp == NULL) { 1140 cnop[req].status = EINVAL; 1141 goto bail; 1142 } 1143 1144 /* sanitize */ 1145 if (cnop[req].len <= 0) { 1146 cnop[req].status = ENOMEM; 1147 goto bail; 1148 } 1149 1150 crp = crypto_getreq((cse->txform != NULL) + 1151 (cse->thash != NULL) + 1152 (cse->tcomp != NULL)); 1153 if (crp == NULL) { 1154 cnop[req].status = ENOMEM; 1155 goto bail; 1156 } 1157 1158 iov_len = cnop[req].len; 1159 /* got a compression/decompression max size? */ 1160 if ((cse->tcomp) && cnop[req].dst_len) { 1161 if (iov_len < cnop[req].dst_len) { 1162 /* Need larger iov to deal with decompress */ 1163 iov_len = cnop[req].dst_len; 1164 } 1165 DPRINTF("iov_len -> %d for decompress\n", iov_len); 1166 } 1167 1168 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1169 crp->uio.uio_iovcnt = 1; 1170 crp->uio.uio_resid = 0; 1171 crp->uio.uio_rw = UIO_WRITE; 1172 crp->uio.uio_iov = crp->iovec; 1173 UIO_SETUP_SYSSPACE(&crp->uio); 1174 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1175 crp->uio.uio_iov[0].iov_len = iov_len; 1176 DPRINTF("kmem_alloc(%d) for iov \n", iov_len); 1177 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1178 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1179 1180 if (cse->tcomp) { 1181 crdc = crp->crp_desc; 1182 } 1183 1184 if (cse->thash) { 1185 crda = crdc ? crdc->crd_next : crp->crp_desc; 1186 if (cse->txform && crda) 1187 crde = crda->crd_next; 1188 } else { 1189 if (cse->txform) { 1190 crde = crdc ? crdc->crd_next : crp->crp_desc; 1191 } else if (!cse->tcomp) { 1192 error = EINVAL; 1193 goto bail; 1194 } 1195 } 1196 1197 if ((copyin(cnop[req].src, 1198 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1199 cnop[req].status = EINVAL; 1200 goto bail; 1201 } 1202 1203 if (crdc) { 1204 switch (cnop[req].op) { 1205 case COP_COMP: 1206 crdc->crd_flags |= CRD_F_COMP; 1207 break; 1208 case COP_DECOMP: 1209 crdc->crd_flags &= ~CRD_F_COMP; 1210 break; 1211 default: 1212 break; 1213 } 1214 /* more data to follow? */ 1215 if (cnop[req].flags & COP_F_MORE) { 1216 flags |= CRYPTO_F_MORE; 1217 } 1218 crdc->crd_len = cnop[req].len; 1219 crdc->crd_inject = 0; 1220 1221 crdc->crd_alg = cse->comp_alg; 1222 crdc->crd_key = NULL; 1223 crdc->crd_klen = 0; 1224 DPRINTF("cse->sid[%d]: crdc setup for comp_alg %d" 1225 " len %d.\n", 1226 (uint32_t)cse->sid, crdc->crd_alg, 1227 crdc->crd_len); 1228 } 1229 1230 if (crda) { 1231 crda->crd_skip = 0; 1232 crda->crd_len = cnop[req].len; 1233 crda->crd_inject = 0; /* ??? */ 1234 1235 crda->crd_alg = cse->mac; 1236 crda->crd_key = cse->mackey; 1237 crda->crd_klen = cse->mackeylen * 8; 1238 } 1239 1240 if (crde) { 1241 if (cnop[req].op == COP_ENCRYPT) 1242 crde->crd_flags |= CRD_F_ENCRYPT; 1243 else 1244 crde->crd_flags &= ~CRD_F_ENCRYPT; 1245 crde->crd_len = cnop[req].len; 1246 crde->crd_inject = 0; 1247 1248 crde->crd_alg = cse->cipher; 1249 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1250 if(cnop[req].key && cnop[req].keylen) { 1251 crde->crd_key = malloc(cnop[req].keylen, 1252 M_XDATA, M_WAITOK); 1253 if((error = copyin(cnop[req].key, 1254 crde->crd_key, cnop[req].keylen))) { 1255 cnop[req].status = EINVAL; 1256 goto bail; 1257 } 1258 crde->crd_klen = cnop[req].keylen * 8; 1259 } else { ... } 1260 #endif 1261 crde->crd_key = cse->key; 1262 crde->crd_klen = cse->keylen * 8; 1263 } 1264 1265 crp->crp_ilen = cnop[req].len; 1266 crp->crp_flags = CRYPTO_F_IOV | 1267 (cnop[req].flags & COP_F_BATCH) | flags; 1268 crp->crp_buf = (void *)&crp->uio; 1269 crp->crp_callback = cryptodev_mcb; 1270 crp->crp_sid = cse->sid; 1271 crp->crp_opaque = cse; 1272 crp->fcrp = fcr; 1273 crp->dst = cnop[req].dst; 1274 crp->len = cnop[req].len; /* input len, iov may be larger */ 1275 crp->mac = cnop[req].mac; 1276 DPRINTF("iov_base %p dst %p len %d mac %p\n", 1277 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1278 crp->mac); 1279 1280 if (cnop[req].iv) { 1281 if (crde == NULL) { 1282 cnop[req].status = EINVAL; 1283 goto bail; 1284 } 1285 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1286 cnop[req].status = EINVAL; 1287 goto bail; 1288 } 1289 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1290 cse->txform->ivsize))) { 1291 cnop[req].status = EINVAL; 1292 goto bail; 1293 } 1294 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1295 cse->txform->ivsize); 1296 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1297 crde->crd_skip = 0; 1298 } else if (crde) { 1299 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1300 crde->crd_skip = 0; 1301 } else { 1302 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1303 crde->crd_flags |= CRD_F_IV_PRESENT; 1304 crde->crd_skip = cse->txform->ivsize; 1305 crde->crd_len -= cse->txform->ivsize; 1306 } 1307 } 1308 1309 if (cnop[req].mac) { 1310 if (crda == NULL) { 1311 cnop[req].status = EINVAL; 1312 goto bail; 1313 } 1314 crp->crp_mac=cse->tmp_mac; 1315 } 1316 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1317 crp->crp_reqid = cnop[req].reqid; 1318 crp->crp_usropaque = cnop[req].opaque; 1319 cv_init(&crp->crp_cv, "crydev"); 1320 #ifdef notyet 1321 eagain: 1322 #endif 1323 cnop[req].status = crypto_dispatch(crp); 1324 mutex_enter(&cryptodev_mtx); /* XXX why mutex? */ 1325 1326 switch (cnop[req].status) { 1327 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1328 case EAGAIN: 1329 mutex_exit(&cryptodev_mtx); 1330 goto eagain; 1331 break; 1332 #endif 1333 case 0: 1334 break; 1335 default: 1336 DPRINTF("not waiting, error.\n"); 1337 mutex_exit(&cryptodev_mtx); 1338 cv_destroy(&crp->crp_cv); 1339 goto bail; 1340 } 1341 1342 mutex_exit(&cryptodev_mtx); 1343 cv_destroy(&crp->crp_cv); 1344 bail: 1345 if (cnop[req].status) { 1346 if (crp) { 1347 if (crp->uio.uio_iov[0].iov_base) { 1348 kmem_free(crp->uio.uio_iov[0].iov_base, 1349 crp->uio.uio_iov[0].iov_len); 1350 } 1351 crypto_freereq(crp); 1352 } 1353 error = 0; 1354 } 1355 } 1356 return error; 1357 } 1358 1359 static int 1360 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1361 { 1362 struct cryptkop *krp = NULL; 1363 int error = EINVAL; 1364 int in, out, size, i, req; 1365 1366 for (req = 0; req < count; req++) { 1367 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1368 return EFBIG; 1369 1370 in = kop[req].crk_iparams; 1371 out = kop[req].crk_oparams; 1372 switch (kop[req].crk_op) { 1373 case CRK_MOD_EXP: 1374 if (in == 3 && out == 1) 1375 break; 1376 kop[req].crk_status = EINVAL; 1377 continue; 1378 case CRK_MOD_EXP_CRT: 1379 if (in == 6 && out == 1) 1380 break; 1381 kop[req].crk_status = EINVAL; 1382 continue; 1383 case CRK_DSA_SIGN: 1384 if (in == 5 && out == 2) 1385 break; 1386 kop[req].crk_status = EINVAL; 1387 continue; 1388 case CRK_DSA_VERIFY: 1389 if (in == 7 && out == 0) 1390 break; 1391 kop[req].crk_status = EINVAL; 1392 continue; 1393 case CRK_DH_COMPUTE_KEY: 1394 if (in == 3 && out == 1) 1395 break; 1396 kop[req].crk_status = EINVAL; 1397 continue; 1398 case CRK_MOD_ADD: 1399 if (in == 3 && out == 1) 1400 break; 1401 kop[req].crk_status = EINVAL; 1402 continue; 1403 case CRK_MOD_ADDINV: 1404 if (in == 2 && out == 1) 1405 break; 1406 kop[req].crk_status = EINVAL; 1407 continue; 1408 case CRK_MOD_SUB: 1409 if (in == 3 && out == 1) 1410 break; 1411 kop[req].crk_status = EINVAL; 1412 continue; 1413 case CRK_MOD_MULT: 1414 if (in == 3 && out == 1) 1415 break; 1416 kop[req].crk_status = EINVAL; 1417 continue; 1418 case CRK_MOD_MULTINV: 1419 if (in == 2 && out == 1) 1420 break; 1421 kop[req].crk_status = EINVAL; 1422 continue; 1423 case CRK_MOD: 1424 if (in == 2 && out == 1) 1425 break; 1426 kop[req].crk_status = EINVAL; 1427 continue; 1428 default: 1429 kop[req].crk_status = EINVAL; 1430 continue; 1431 } 1432 1433 krp = crypto_kgetreq(1, PR_WAITOK); 1434 if (krp == NULL) { 1435 /* limited by opencrypto.crypto_ret_kq.maxlen */ 1436 continue; 1437 } 1438 (void)memset(krp, 0, sizeof *krp); 1439 cv_init(&krp->krp_cv, "crykdev"); 1440 krp->krp_op = kop[req].crk_op; 1441 krp->krp_status = kop[req].crk_status; 1442 krp->krp_iparams = kop[req].crk_iparams; 1443 krp->krp_oparams = kop[req].crk_oparams; 1444 krp->krp_status = 0; 1445 krp->krp_callback = cryptodevkey_mcb; 1446 (void)memcpy(krp->crk_param, kop[req].crk_param, 1447 sizeof(kop[req].crk_param)); 1448 1449 krp->krp_flags = 0; 1450 1451 for (i = 0; i < CRK_MAXPARAM; i++) 1452 krp->krp_param[i].crp_nbits = 1453 kop[req].crk_param[i].crp_nbits; 1454 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1455 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1456 if (size == 0) 1457 continue; 1458 krp->krp_param[i].crp_p = 1459 kmem_alloc(size, KM_SLEEP); 1460 if (i >= krp->krp_iparams) 1461 continue; 1462 kop[req].crk_status = 1463 copyin(kop[req].crk_param[i].crp_p, 1464 krp->krp_param[i].crp_p, size); 1465 if (kop[req].crk_status) 1466 goto fail; 1467 } 1468 krp->fcrp = fcr; 1469 1470 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1471 krp->krp_reqid = kop[req].crk_reqid; 1472 krp->krp_usropaque = kop[req].crk_opaque; 1473 1474 kop[req].crk_status = crypto_kdispatch(krp); 1475 if (kop[req].crk_status != 0) { 1476 goto fail; 1477 } 1478 1479 fail: 1480 if(kop[req].crk_status) { 1481 if (krp) { 1482 kop[req].crk_status = krp->krp_status; 1483 for (i = 0; i < CRK_MAXPARAM; i++) { 1484 struct crparam *kp = 1485 &(krp->krp_param[i]); 1486 if (kp->crp_p) { 1487 size = (kp->crp_nbits + 7) / 8; 1488 KASSERT(size > 0); 1489 memset(kp->crp_p, 0, size); 1490 kmem_free(kp->crp_p, size); 1491 } 1492 } 1493 cv_destroy(&krp->krp_cv); 1494 crypto_kfreereq(krp); 1495 } 1496 } 1497 error = 0; 1498 } 1499 DPRINTF("error=0x%08x\n", error); 1500 return error; 1501 } 1502 1503 int 1504 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1505 { 1506 struct cryptoini cria, crie; 1507 struct cryptoini cric; /* compressor */ 1508 struct cryptoini *crihead = NULL; 1509 const struct enc_xform *txform = NULL; 1510 const struct auth_hash *thash = NULL; 1511 const struct comp_algo *tcomp = NULL; 1512 struct csession *cse; 1513 u_int64_t sid; 1514 int error = 0; 1515 1516 DPRINTF("cipher=%d, mac=%d\n", sop->cipher, sop->mac); 1517 1518 /* XXX there must be a way to not embed the list of xforms here */ 1519 switch (sop->cipher) { 1520 case 0: 1521 break; 1522 case CRYPTO_DES_CBC: 1523 txform = &enc_xform_des; 1524 break; 1525 case CRYPTO_3DES_CBC: 1526 txform = &enc_xform_3des; 1527 break; 1528 case CRYPTO_BLF_CBC: 1529 txform = &enc_xform_blf; 1530 break; 1531 case CRYPTO_CAST_CBC: 1532 txform = &enc_xform_cast5; 1533 break; 1534 case CRYPTO_SKIPJACK_CBC: 1535 txform = &enc_xform_skipjack; 1536 break; 1537 case CRYPTO_AES_CBC: 1538 txform = &enc_xform_aes; 1539 break; 1540 case CRYPTO_CAMELLIA_CBC: 1541 txform = &enc_xform_camellia; 1542 break; 1543 case CRYPTO_AES_CTR: 1544 txform = &enc_xform_aes_ctr; 1545 break; 1546 case CRYPTO_AES_GCM_16: 1547 txform = &enc_xform_aes_gcm; 1548 break; 1549 case CRYPTO_AES_GMAC: 1550 txform = &enc_xform_aes_gmac; 1551 break; 1552 case CRYPTO_NULL_CBC: 1553 txform = &enc_xform_null; 1554 break; 1555 case CRYPTO_ARC4: 1556 txform = &enc_xform_arc4; 1557 break; 1558 default: 1559 DPRINTF("Invalid cipher %d\n", sop->cipher); 1560 return EINVAL; 1561 } 1562 1563 switch (sop->comp_alg) { 1564 case 0: 1565 break; 1566 case CRYPTO_DEFLATE_COMP: 1567 tcomp = &comp_algo_deflate; 1568 break; 1569 case CRYPTO_GZIP_COMP: 1570 tcomp = &comp_algo_gzip; 1571 DPRINTF("tcomp for GZIP\n"); 1572 break; 1573 default: 1574 DPRINTF("Invalid compression alg %d\n", sop->comp_alg); 1575 return EINVAL; 1576 } 1577 1578 switch (sop->mac) { 1579 case 0: 1580 break; 1581 case CRYPTO_MD5_HMAC: 1582 thash = &auth_hash_hmac_md5; 1583 break; 1584 case CRYPTO_SHA1_HMAC: 1585 thash = &auth_hash_hmac_sha1; 1586 break; 1587 case CRYPTO_MD5_HMAC_96: 1588 thash = &auth_hash_hmac_md5_96; 1589 break; 1590 case CRYPTO_SHA1_HMAC_96: 1591 thash = &auth_hash_hmac_sha1_96; 1592 break; 1593 case CRYPTO_SHA2_HMAC: 1594 /* XXX switching on key length seems questionable */ 1595 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1596 thash = &auth_hash_hmac_sha2_256; 1597 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1598 thash = &auth_hash_hmac_sha2_384; 1599 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1600 thash = &auth_hash_hmac_sha2_512; 1601 } else { 1602 DPRINTF("Invalid mackeylen %d\n", sop->mackeylen); 1603 return EINVAL; 1604 } 1605 break; 1606 case CRYPTO_SHA2_384_HMAC: 1607 thash = &auth_hash_hmac_sha2_384; 1608 break; 1609 case CRYPTO_SHA2_512_HMAC: 1610 thash = &auth_hash_hmac_sha2_512; 1611 break; 1612 case CRYPTO_RIPEMD160_HMAC: 1613 thash = &auth_hash_hmac_ripemd_160; 1614 break; 1615 case CRYPTO_RIPEMD160_HMAC_96: 1616 thash = &auth_hash_hmac_ripemd_160_96; 1617 break; 1618 case CRYPTO_MD5: 1619 thash = &auth_hash_md5; 1620 break; 1621 case CRYPTO_SHA1: 1622 thash = &auth_hash_sha1; 1623 break; 1624 case CRYPTO_AES_XCBC_MAC_96: 1625 thash = &auth_hash_aes_xcbc_mac_96; 1626 break; 1627 case CRYPTO_AES_128_GMAC: 1628 thash = &auth_hash_gmac_aes_128; 1629 break; 1630 case CRYPTO_AES_192_GMAC: 1631 thash = &auth_hash_gmac_aes_192; 1632 break; 1633 case CRYPTO_AES_256_GMAC: 1634 thash = &auth_hash_gmac_aes_256; 1635 break; 1636 case CRYPTO_NULL_HMAC: 1637 thash = &auth_hash_null; 1638 break; 1639 default: 1640 DPRINTF("Invalid mac %d\n", sop->mac); 1641 return EINVAL; 1642 } 1643 1644 memset(&crie, 0, sizeof(crie)); 1645 memset(&cria, 0, sizeof(cria)); 1646 memset(&cric, 0, sizeof(cric)); 1647 1648 if (tcomp) { 1649 cric.cri_alg = tcomp->type; 1650 cric.cri_klen = 0; 1651 DPRINTF("tcomp->type = %d\n", tcomp->type); 1652 1653 crihead = &cric; 1654 if (txform) { 1655 cric.cri_next = &crie; 1656 } else if (thash) { 1657 cric.cri_next = &cria; 1658 } 1659 } 1660 1661 if (txform) { 1662 crie.cri_alg = txform->type; 1663 crie.cri_klen = sop->keylen * 8; 1664 if (sop->keylen > txform->maxkey || 1665 sop->keylen < txform->minkey) { 1666 DPRINTF("keylen %d not in [%d,%d]\n", 1667 sop->keylen, txform->minkey, txform->maxkey); 1668 error = EINVAL; 1669 goto bail; 1670 } 1671 1672 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1673 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1674 goto bail; 1675 if (!crihead) { 1676 crihead = &crie; 1677 } 1678 if (thash) 1679 crie.cri_next = &cria; 1680 } 1681 1682 if (thash) { 1683 cria.cri_alg = thash->type; 1684 cria.cri_klen = sop->mackeylen * 8; 1685 if (sop->mackeylen != thash->keysize) { 1686 DPRINTF("mackeylen %d != keysize %d\n", 1687 sop->mackeylen, thash->keysize); 1688 error = EINVAL; 1689 goto bail; 1690 } 1691 if (cria.cri_klen) { 1692 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1693 M_WAITOK); 1694 if ((error = copyin(sop->mackey, cria.cri_key, 1695 cria.cri_klen / 8))) { 1696 goto bail; 1697 } 1698 } 1699 if (!crihead) { 1700 crihead = &cria; 1701 } 1702 } 1703 1704 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1705 if (!error) { 1706 DPRINTF("got session %d\n", (uint32_t)sid); 1707 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1708 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1709 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1710 if (cse != NULL) { 1711 sop->ses = cse->ses; 1712 } else { 1713 DPRINTF("csecreate failed\n"); 1714 crypto_freesession(sid); 1715 error = EINVAL; 1716 } 1717 } else { 1718 DPRINTF("SIOCSESSION violates kernel parameters %d\n", error); 1719 } 1720 bail: 1721 if (error) { 1722 if (crie.cri_key) { 1723 memset(crie.cri_key, 0, crie.cri_klen / 8); 1724 free(crie.cri_key, M_XDATA); 1725 } 1726 if (cria.cri_key) { 1727 memset(cria.cri_key, 0, cria.cri_klen / 8); 1728 free(cria.cri_key, M_XDATA); 1729 } 1730 } 1731 return error; 1732 } 1733 1734 int 1735 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1736 int count) 1737 { 1738 int i; 1739 1740 for (i = 0; i < count; i++, sn_ops++) { 1741 struct session_op s_op; 1742 s_op.cipher = sn_ops->cipher; 1743 s_op.mac = sn_ops->mac; 1744 s_op.comp_alg = sn_ops->comp_alg; 1745 s_op.keylen = sn_ops->keylen; 1746 s_op.key = sn_ops->key; 1747 s_op.mackeylen = sn_ops->mackeylen; 1748 s_op.mackey = sn_ops->mackey; 1749 s_op.ses = ~0; 1750 1751 sn_ops->status = cryptodev_session(fcr, &s_op); 1752 1753 sn_ops->ses = s_op.ses; 1754 } 1755 1756 return 0; 1757 } 1758 1759 static int 1760 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1761 { 1762 struct csession *cse; 1763 int req, error = 0; 1764 1765 mutex_enter(&cryptodev_mtx); 1766 for(req = 0; req < count; req++) { 1767 cse = csefind(fcr, sesid[req]); 1768 if (cse == NULL) 1769 continue; 1770 csedelete(fcr, cse); 1771 mutex_exit(&cryptodev_mtx); 1772 error = csefree(cse); 1773 mutex_enter(&cryptodev_mtx); 1774 } 1775 mutex_exit(&cryptodev_mtx); 1776 return error; 1777 } 1778 1779 /* 1780 * collect as many completed requests as are availble, or count completed 1781 * requests whichever is less. 1782 * return the number of requests. 1783 */ 1784 static int 1785 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1786 int count) 1787 { 1788 struct cryptop *crp = NULL; 1789 struct cryptkop *krp = NULL; 1790 struct csession *cse; 1791 int i, size, req = 0; 1792 int completed=0; 1793 1794 /* On queue so nobody else can grab them 1795 * and copyout can be delayed-- no locking */ 1796 TAILQ_HEAD(, cryptop) crp_delfree_q = 1797 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1798 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1799 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1800 1801 /* at this point we do not know which response user is requesting for 1802 * (symmetric or asymmetric) so we copyout one from each i.e if the 1803 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1804 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1805 1806 /* pull off a list of requests while protected from changes */ 1807 mutex_enter(&cryptodev_mtx); 1808 while (req < count) { 1809 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1810 if (crp) { 1811 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1812 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1813 cse = (struct csession *)crp->crp_opaque; 1814 1815 /* see if the session is still valid */ 1816 cse = csefind(fcr, cse->ses); 1817 if (cse != NULL) { 1818 crypt_res[req].status = 0; 1819 } else { 1820 DPRINTF("csefind failed\n"); 1821 crypt_res[req].status = EINVAL; 1822 } 1823 req++; 1824 } 1825 if(req < count) { 1826 crypt_res[req].status = 0; 1827 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1828 if (krp) { 1829 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1830 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1831 req++; 1832 } 1833 } 1834 } 1835 mutex_exit(&cryptodev_mtx); 1836 1837 /* now do all the work outside the mutex */ 1838 for(req=0; req < count ;) { 1839 crp = TAILQ_FIRST(&crp_delfree_q); 1840 if (crp) { 1841 if (crypt_res[req].status != 0) { 1842 /* csefind failed during collection */ 1843 goto bail; 1844 } 1845 cse = (struct csession *)crp->crp_opaque; 1846 crypt_res[req].reqid = crp->crp_reqid; 1847 crypt_res[req].opaque = crp->crp_usropaque; 1848 completed++; 1849 1850 if (crp->crp_etype != 0) { 1851 crypt_res[req].status = crp->crp_etype; 1852 goto bail; 1853 } 1854 1855 if (cse->error) { 1856 crypt_res[req].status = cse->error; 1857 goto bail; 1858 } 1859 1860 if (crp->dst && (crypt_res[req].status = 1861 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1862 crp->len))) 1863 goto bail; 1864 1865 if (crp->mac && (crypt_res[req].status = 1866 copyout(crp->crp_mac, crp->mac, 1867 cse->thash->authsize))) 1868 goto bail; 1869 1870 bail: 1871 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1872 kmem_free(crp->uio.uio_iov[0].iov_base, 1873 crp->uio.uio_iov[0].iov_len); 1874 crypto_freereq(crp); 1875 req++; 1876 } 1877 1878 if (req < count) { 1879 krp = TAILQ_FIRST(&krp_delfree_q); 1880 if (krp) { 1881 crypt_res[req].reqid = krp->krp_reqid; 1882 crypt_res[req].opaque = krp->krp_usropaque; 1883 completed++; 1884 if (krp->krp_status != 0) { 1885 DPRINTF("krp->krp_status 0x%08x\n", 1886 krp->krp_status); 1887 crypt_res[req].status = krp->krp_status; 1888 goto fail; 1889 } 1890 1891 for (i = krp->krp_iparams; i < krp->krp_iparams 1892 + krp->krp_oparams; i++) { 1893 size = (krp->krp_param[i].crp_nbits 1894 + 7) / 8; 1895 if (size == 0) 1896 continue; 1897 crypt_res[req].status = copyout 1898 (krp->krp_param[i].crp_p, 1899 krp->crk_param[i].crp_p, size); 1900 if (crypt_res[req].status) { 1901 DPRINTF("copyout oparam %d failed, " 1902 "error=%d\n", 1903 i - krp->krp_iparams, 1904 crypt_res[req].status); 1905 goto fail; 1906 } 1907 } 1908 fail: 1909 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1910 /* not sure what to do for this */ 1911 /* kop[req].crk_status = krp->krp_status; */ 1912 for (i = 0; i < CRK_MAXPARAM; i++) { 1913 struct crparam *kp = &(krp->krp_param[i]); 1914 if (kp->crp_p) { 1915 size = (kp->crp_nbits + 7) / 8; 1916 KASSERT(size > 0); 1917 (void)memset(kp->crp_p, 0, size); 1918 kmem_free(kp->crp_p, size); 1919 } 1920 } 1921 cv_destroy(&krp->krp_cv); 1922 crypto_kfreereq(krp); 1923 req++; 1924 } 1925 } 1926 } 1927 1928 return completed; 1929 } 1930 1931 static int 1932 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1933 { 1934 struct cryptop *crp = NULL, *cnext; 1935 struct cryptkop *krp = NULL, *knext; 1936 struct csession *cse; 1937 int i, size, req = 0; 1938 1939 mutex_enter(&cryptodev_mtx); 1940 /* Here we dont know for which request the user is requesting the 1941 * response so checking in both the queues */ 1942 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1943 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1944 cse = (struct csession *)crp->crp_opaque; 1945 crypt_res->opaque = crp->crp_usropaque; 1946 cse = csefind(fcr, cse->ses); 1947 if (cse == NULL) { 1948 DPRINTF("csefind failed\n"); 1949 crypt_res->status = EINVAL; 1950 goto bail; 1951 } 1952 1953 if (crp->crp_etype != 0) { 1954 crypt_res->status = crp->crp_etype; 1955 goto bail; 1956 } 1957 1958 if (cse->error) { 1959 crypt_res->status = cse->error; 1960 goto bail; 1961 } 1962 1963 if (crp->dst && (crypt_res->status = 1964 copyout(crp->uio.uio_iov[0].iov_base, 1965 crp->dst, crp->len))) 1966 goto bail; 1967 1968 if (crp->mac && (crypt_res->status = 1969 copyout(crp->crp_mac, crp->mac, 1970 cse->thash->authsize))) 1971 goto bail; 1972 bail: 1973 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1974 1975 mutex_exit(&cryptodev_mtx); 1976 crypto_freereq(crp); 1977 return 0; 1978 } 1979 } 1980 1981 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1982 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1983 crypt_res[req].opaque = krp->krp_usropaque; 1984 if (krp->krp_status != 0) { 1985 DPRINTF("krp->krp_status 0x%08x\n", 1986 krp->krp_status); 1987 crypt_res[req].status = krp->krp_status; 1988 goto fail; 1989 } 1990 1991 for (i = krp->krp_iparams; i < krp->krp_iparams + 1992 krp->krp_oparams; i++) { 1993 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1994 if (size == 0) 1995 continue; 1996 crypt_res[req].status = copyout( 1997 krp->krp_param[i].crp_p, 1998 krp->crk_param[i].crp_p, size); 1999 if (crypt_res[req].status) { 2000 DPRINTF("copyout oparam " 2001 "%d failed, error=%d\n", 2002 i - krp->krp_iparams, 2003 crypt_res[req].status); 2004 goto fail; 2005 } 2006 } 2007 fail: 2008 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 2009 mutex_exit(&cryptodev_mtx); 2010 /* not sure what to do for this */ 2011 /* kop[req].crk_status = krp->krp_status; */ 2012 for (i = 0; i < CRK_MAXPARAM; i++) { 2013 struct crparam *kp = &(krp->krp_param[i]); 2014 if (kp->crp_p) { 2015 size = (kp->crp_nbits + 7) / 8; 2016 KASSERT(size > 0); 2017 memset(kp->crp_p, 0, size); 2018 kmem_free(kp->crp_p, size); 2019 } 2020 } 2021 cv_destroy(&krp->krp_cv); 2022 crypto_kfreereq(krp); 2023 return 0; 2024 } 2025 } 2026 mutex_exit(&cryptodev_mtx); 2027 return EINPROGRESS; 2028 } 2029 2030 static int 2031 cryptof_stat(struct file *fp, struct stat *st) 2032 { 2033 struct fcrypt *fcr = fp->f_fcrypt; 2034 2035 (void)memset(st, 0, sizeof(*st)); 2036 2037 mutex_enter(&cryptodev_mtx); 2038 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2039 st->st_atimespec = fcr->atime; 2040 st->st_mtimespec = fcr->mtime; 2041 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2042 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2043 st->st_gid = kauth_cred_getegid(fp->f_cred); 2044 mutex_exit(&cryptodev_mtx); 2045 2046 return 0; 2047 } 2048 2049 static int 2050 cryptof_poll(struct file *fp, int events) 2051 { 2052 struct fcrypt *fcr = fp->f_fcrypt; 2053 int revents = 0; 2054 2055 if (!(events & (POLLIN | POLLRDNORM))) { 2056 /* only support read and POLLIN */ 2057 return 0; 2058 } 2059 2060 mutex_enter(&cryptodev_mtx); 2061 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2062 /* no completed requests pending, save the poll for later */ 2063 selrecord(curlwp, &fcr->sinfo); 2064 } else { 2065 /* let the app(s) know that there are completed requests */ 2066 revents = events & (POLLIN | POLLRDNORM); 2067 } 2068 mutex_exit(&cryptodev_mtx); 2069 2070 return revents; 2071 } 2072 2073 /* 2074 * Pseudo-device initialization routine for /dev/crypto 2075 */ 2076 void 2077 cryptoattach(int num) 2078 { 2079 2080 crypto_init(); 2081 2082 mutex_init(&cryptodev_mtx, MUTEX_DEFAULT, IPL_NONE); 2083 2084 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2085 NULL, IPL_NONE); 2086 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2087 NULL, IPL_NONE); 2088 2089 /* 2090 * Preallocate space for 64 users, with 5 sessions each. 2091 * (consider that a TLS protocol session requires at least 2092 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2093 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2094 * consuming one session here for each algorithm. 2095 */ 2096 pool_prime(&fcrpl, 64); 2097 pool_prime(&csepl, 64 * 5); 2098 } 2099 2100 void crypto_attach(device_t, device_t, void *); 2101 2102 void 2103 crypto_attach(device_t parent, device_t self, void * opaque) 2104 { 2105 2106 cryptoattach(0); 2107 } 2108 2109 int crypto_detach(device_t, int); 2110 2111 int 2112 crypto_detach(device_t self, int num) 2113 { 2114 2115 pool_destroy(&fcrpl); 2116 pool_destroy(&csepl); 2117 2118 mutex_destroy(&cryptodev_mtx); 2119 2120 return 0; 2121 } 2122 2123 int crypto_match(device_t, cfdata_t, void *); 2124 2125 int 2126 crypto_match(device_t parent, cfdata_t data, void *opaque) 2127 { 2128 2129 return 1; 2130 } 2131 2132 MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto"); 2133 2134 CFDRIVER_DECL(crypto, DV_DULL, NULL); 2135 2136 CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, 2137 NULL, NULL, NULL); 2138 2139 #ifdef _MODULE 2140 static int cryptoloc[] = { -1, -1 }; 2141 2142 static struct cfdata crypto_cfdata[] = { 2143 { 2144 .cf_name = "crypto", 2145 .cf_atname = "crypto", 2146 .cf_unit = 0, 2147 .cf_fstate = 0, 2148 .cf_loc = cryptoloc, 2149 .cf_flags = 0, 2150 .cf_pspec = NULL, 2151 }, 2152 { NULL, NULL, 0, 0, NULL, 0, NULL } 2153 }; 2154 #endif 2155 2156 static int 2157 crypto_modcmd(modcmd_t cmd, void *arg) 2158 { 2159 int error = 0; 2160 #ifdef _MODULE 2161 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 2162 #endif 2163 2164 switch (cmd) { 2165 case MODULE_CMD_INIT: 2166 #ifdef _MODULE 2167 2168 error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, 2169 &crypto_cdevsw, &cmajor); 2170 if (error) { 2171 aprint_error("%s: unable to register devsw, error %d\n", 2172 crypto_cd.cd_name, error); 2173 return error; 2174 } 2175 2176 error = config_cfdriver_attach(&crypto_cd); 2177 if (error) { 2178 devsw_detach(NULL, &crypto_cdevsw); 2179 return error; 2180 } 2181 2182 error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); 2183 if (error) { 2184 config_cfdriver_detach(&crypto_cd); 2185 devsw_detach(NULL, &crypto_cdevsw); 2186 aprint_error("%s: unable to register cfattach\n", 2187 crypto_cd.cd_name); 2188 2189 return error; 2190 } 2191 2192 error = config_cfdata_attach(crypto_cfdata, 1); 2193 if (error) { 2194 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2195 config_cfdriver_detach(&crypto_cd); 2196 devsw_detach(NULL, &crypto_cdevsw); 2197 aprint_error("%s: unable to register cfdata\n", 2198 crypto_cd.cd_name); 2199 2200 return error; 2201 } 2202 2203 (void)config_attach_pseudo(crypto_cfdata); 2204 #endif 2205 2206 return error; 2207 case MODULE_CMD_FINI: 2208 #ifdef _MODULE 2209 if (crypto_refcount != 0) 2210 return EBUSY; 2211 error = config_cfdata_detach(crypto_cfdata); 2212 if (error) { 2213 return error; 2214 } 2215 2216 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2217 config_cfdriver_detach(&crypto_cd); 2218 devsw_detach(NULL, &crypto_cdevsw); 2219 #endif 2220 2221 return error; 2222 #ifdef _MODULE 2223 case MODULE_CMD_AUTOUNLOAD: 2224 #if 0 /* 2225 * XXX Completely disable auto-unload for now, since there is still 2226 * XXX a (small) window where in-module ref-counting doesn't help 2227 */ 2228 if (crypto_refcount != 0) 2229 #endif 2230 return EBUSY; 2231 /* FALLTHROUGH */ 2232 #endif 2233 default: 2234 return ENOTTY; 2235 } 2236 } 2237
Indexes created Mon Sep 22 21:09:42 GMT 2025