cryptodev.c revision 1.122
1 /* $NetBSD: cryptodev.c,v 1.122 2022/05/22 11:40:03 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 1.122 2022/05/22 11:40:03 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 void 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 void 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 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 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; 721 722 mutex_enter(&cryptodev_mtx); 723 cse->error = crp->crp_etype; 724 crp->crp_devflags |= CRYPTODEV_F_RET; 725 cv_signal(&crp->crp_cv); 726 mutex_exit(&cryptodev_mtx); 727 } 728 729 static void 730 cryptodev_mcb(struct cryptop *crp) 731 { 732 struct csession *cse = crp->crp_opaque; 733 734 mutex_enter(&cryptodev_mtx); 735 cse->error = crp->crp_etype; 736 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 737 selnotify(&crp->fcrp->sinfo, 0, 0); 738 mutex_exit(&cryptodev_mtx); 739 } 740 741 static void 742 cryptodevkey_cb(struct cryptkop *krp) 743 { 744 745 mutex_enter(&cryptodev_mtx); 746 krp->krp_devflags |= CRYPTODEV_F_RET; 747 cv_signal(&krp->krp_cv); 748 mutex_exit(&cryptodev_mtx); 749 } 750 751 static void 752 cryptodevkey_mcb(struct cryptkop *krp) 753 { 754 755 mutex_enter(&cryptodev_mtx); 756 cv_signal(&krp->krp_cv); 757 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 758 selnotify(&krp->fcrp->sinfo, 0, 0); 759 mutex_exit(&cryptodev_mtx); 760 } 761 762 static int 763 cryptodev_key(struct crypt_kop *kop) 764 { 765 struct cryptkop *krp = NULL; 766 int error = EINVAL; 767 int in, out, size, i; 768 769 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 770 return EFBIG; 771 772 in = kop->crk_iparams; 773 out = kop->crk_oparams; 774 switch (kop->crk_op) { 775 case CRK_MOD_EXP: 776 if (in == 3 && out == 1) 777 break; 778 return EINVAL; 779 case CRK_MOD_EXP_CRT: 780 if (in == 6 && out == 1) 781 break; 782 return EINVAL; 783 case CRK_DSA_SIGN: 784 if (in == 5 && out == 2) 785 break; 786 return EINVAL; 787 case CRK_DSA_VERIFY: 788 if (in == 7 && out == 0) 789 break; 790 return EINVAL; 791 case CRK_DH_COMPUTE_KEY: 792 if (in == 3 && out == 1) 793 break; 794 return EINVAL; 795 case CRK_MOD_ADD: 796 if (in == 3 && out == 1) 797 break; 798 return EINVAL; 799 case CRK_MOD_ADDINV: 800 if (in == 2 && out == 1) 801 break; 802 return EINVAL; 803 case CRK_MOD_SUB: 804 if (in == 3 && out == 1) 805 break; 806 return EINVAL; 807 case CRK_MOD_MULT: 808 if (in == 3 && out == 1) 809 break; 810 return EINVAL; 811 case CRK_MOD_MULTINV: 812 if (in == 2 && out == 1) 813 break; 814 return EINVAL; 815 case CRK_MOD: 816 if (in == 2 && out == 1) 817 break; 818 return EINVAL; 819 default: 820 return EINVAL; 821 } 822 823 krp = crypto_kgetreq(1, PR_WAITOK); 824 if (krp == NULL) { 825 /* limited by opencrypto.crypto_ret_kq.maxlen */ 826 return ENOMEM; 827 } 828 (void)memset(krp, 0, sizeof *krp); 829 cv_init(&krp->krp_cv, "crykdev"); 830 krp->krp_op = kop->crk_op; 831 krp->krp_status = kop->crk_status; 832 krp->krp_iparams = kop->crk_iparams; 833 krp->krp_oparams = kop->crk_oparams; 834 krp->krp_status = 0; 835 krp->krp_callback = cryptodevkey_cb; 836 837 for (i = 0; i < CRK_MAXPARAM; i++) 838 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 839 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 840 size = (krp->krp_param[i].crp_nbits + 7) / 8; 841 if (size == 0) 842 continue; 843 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 844 if (i >= krp->krp_iparams) 845 continue; 846 error = copyin(kop->crk_param[i].crp_p, 847 krp->krp_param[i].crp_p, size); 848 if (error) 849 goto fail; 850 } 851 852 error = crypto_kdispatch(krp); 853 if (error != 0) { 854 goto fail; 855 } 856 857 mutex_enter(&cryptodev_mtx); 858 while (!(krp->krp_devflags & CRYPTODEV_F_RET)) { 859 cv_wait(&krp->krp_cv, &cryptodev_mtx); /* XXX cv_wait_sig? */ 860 } 861 mutex_exit(&cryptodev_mtx); 862 863 if (krp->krp_status != 0) { 864 DPRINTF("krp->krp_status 0x%08x\n", krp->krp_status); 865 error = krp->krp_status; 866 goto fail; 867 } 868 869 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 870 i++) { 871 size = (krp->krp_param[i].crp_nbits + 7) / 8; 872 if (size == 0) 873 continue; 874 error = copyout(krp->krp_param[i].crp_p, 875 kop->crk_param[i].crp_p, size); 876 if (error) { 877 DPRINTF("copyout oparam %d failed, " 878 "error=%d\n", i-krp->krp_iparams, error); 879 goto fail; 880 } 881 } 882 883 fail: 884 kop->crk_status = krp->krp_status; 885 for (i = 0; i < CRK_MAXPARAM; i++) { 886 struct crparam *kp = &(krp->krp_param[i]); 887 if (krp->krp_param[i].crp_p) { 888 size = (kp->crp_nbits + 7) / 8; 889 KASSERT(size > 0); 890 (void)memset(kp->crp_p, 0, size); 891 kmem_free(kp->crp_p, size); 892 } 893 } 894 cv_destroy(&krp->krp_cv); 895 crypto_kfreereq(krp); 896 DPRINTF("error=0x%08x\n", error); 897 return error; 898 } 899 900 /* ARGSUSED */ 901 static int 902 cryptof_close(struct file *fp) 903 { 904 struct fcrypt *fcr = fp->f_fcrypt; 905 struct csession *cse; 906 907 mutex_enter(&cryptodev_mtx); 908 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 909 TAILQ_REMOVE(&fcr->csessions, cse, next); 910 mutex_exit(&cryptodev_mtx); 911 csefree(cse); 912 mutex_enter(&cryptodev_mtx); 913 } 914 seldestroy(&fcr->sinfo); 915 fp->f_fcrypt = NULL; 916 crypto_refcount--; 917 mutex_exit(&cryptodev_mtx); 918 919 pool_put(&fcrpl, fcr); 920 return 0; 921 } 922 923 /* needed for compatibility module */ 924 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 925 { 926 return csefind(fcr, ses); 927 } 928 929 /* csefind: call with cryptodev_mtx held. */ 930 static struct csession * 931 csefind(struct fcrypt *fcr, u_int ses) 932 { 933 struct csession *cse, *cnext, *ret = NULL; 934 935 KASSERT(mutex_owned(&cryptodev_mtx)); 936 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 937 if (cse->ses == ses) 938 ret = cse; 939 940 return ret; 941 } 942 943 /* csedelete: call with cryptodev_mtx held. */ 944 static int 945 csedelete(struct fcrypt *fcr, struct csession *cse_del) 946 { 947 struct csession *cse, *cnext; 948 int ret = 0; 949 950 KASSERT(mutex_owned(&cryptodev_mtx)); 951 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 952 if (cse == cse_del) { 953 TAILQ_REMOVE(&fcr->csessions, cse, next); 954 ret = 1; 955 } 956 } 957 return ret; 958 } 959 960 static struct csession * 961 cseadd(struct fcrypt *fcr, struct csession *cse) 962 { 963 mutex_enter(&cryptodev_mtx); 964 /* don't let session ID wrap! */ 965 if (fcr->sesn + 1 == 0) return NULL; 966 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 967 cse->ses = fcr->sesn++; 968 mutex_exit(&cryptodev_mtx); 969 return cse; 970 } 971 972 static struct csession * 973 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 974 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 975 u_int32_t comp_alg, const struct enc_xform *txform, 976 const struct auth_hash *thash, const struct comp_algo *tcomp) 977 { 978 struct csession *cse; 979 980 cse = pool_get(&csepl, PR_NOWAIT); 981 if (cse == NULL) 982 return NULL; 983 cse->key = key; 984 cse->keylen = keylen/8; 985 cse->mackey = mackey; 986 cse->mackeylen = mackeylen/8; 987 cse->sid = sid; 988 cse->cipher = cipher; 989 cse->mac = mac; 990 cse->comp_alg = comp_alg; 991 cse->txform = txform; 992 cse->thash = thash; 993 cse->tcomp = tcomp; 994 cse->error = 0; 995 if (cseadd(fcr, cse)) 996 return cse; 997 else { 998 pool_put(&csepl, cse); 999 return NULL; 1000 } 1001 } 1002 1003 static void 1004 csefree(struct csession *cse) 1005 { 1006 1007 crypto_freesession(cse->sid); 1008 if (cse->key) 1009 free(cse->key, M_XDATA); 1010 if (cse->mackey) 1011 free(cse->mackey, M_XDATA); 1012 pool_put(&csepl, cse); 1013 } 1014 1015 static int 1016 cryptoopen(dev_t dev, int flag, int mode, 1017 struct lwp *l) 1018 { 1019 file_t *fp; 1020 struct fcrypt *fcr; 1021 int fd, error; 1022 1023 if (crypto_usercrypto == 0) 1024 return ENXIO; 1025 1026 if ((error = fd_allocfile(&fp, &fd)) != 0) 1027 return error; 1028 1029 fcr = pool_get(&fcrpl, PR_WAITOK); 1030 getnanotime(&fcr->btime); 1031 fcr->atime = fcr->mtime = fcr->btime; 1032 mutex_enter(&cryptodev_mtx); 1033 TAILQ_INIT(&fcr->csessions); 1034 TAILQ_INIT(&fcr->crp_ret_mq); 1035 TAILQ_INIT(&fcr->crp_ret_mkq); 1036 selinit(&fcr->sinfo); 1037 /* 1038 * Don't ever return session 0, to allow detection of 1039 * failed creation attempts with multi-create ioctl. 1040 */ 1041 fcr->sesn = 1; 1042 fcr->requestid = 1; 1043 crypto_refcount++; 1044 mutex_exit(&cryptodev_mtx); 1045 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1046 } 1047 1048 static int 1049 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1050 { 1051 return EIO; 1052 } 1053 1054 static int 1055 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1056 { 1057 return EIO; 1058 } 1059 1060 int 1061 cryptoselect(dev_t dev, int rw, struct lwp *l) 1062 { 1063 return 0; 1064 } 1065 1066 /*static*/ 1067 struct cdevsw crypto_cdevsw = { 1068 .d_open = cryptoopen, 1069 .d_close = noclose, 1070 .d_read = cryptoread, 1071 .d_write = cryptowrite, 1072 .d_ioctl = noioctl, 1073 .d_stop = nostop, 1074 .d_tty = notty, 1075 .d_poll = cryptoselect /*nopoll*/, 1076 .d_mmap = nommap, 1077 .d_kqfilter = nokqfilter, 1078 .d_discard = nodiscard, 1079 .d_flag = D_OTHER 1080 }; 1081 1082 int 1083 cryptodev_mop(struct fcrypt *fcr, 1084 struct crypt_n_op * cnop, 1085 int count, struct lwp *l) 1086 { 1087 struct cryptop *crp = NULL; 1088 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1089 int req, error=0; 1090 struct csession *cse; 1091 int flags=0; 1092 int iov_len; 1093 1094 for (req = 0; req < count; req++) { 1095 mutex_enter(&cryptodev_mtx); 1096 cse = csefind(fcr, cnop[req].ses); 1097 if (cse == NULL) { 1098 DPRINTF("csefind failed\n"); 1099 cnop[req].status = EINVAL; 1100 mutex_exit(&cryptodev_mtx); 1101 continue; 1102 } 1103 mutex_exit(&cryptodev_mtx); 1104 1105 if (cnop[req].len > 256*1024-4) { 1106 DPRINTF("length failed\n"); 1107 cnop[req].status = EINVAL; 1108 continue; 1109 } 1110 if (cse->txform) { 1111 if (cnop[req].len < cse->txform->blocksize - 1112 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1113 (cnop[req].len - 1114 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1115 % cse->txform->blocksize) { 1116 cnop[req].status = EINVAL; 1117 continue; 1118 } 1119 } 1120 1121 if (cse->txform == NULL && 1122 cse->thash == NULL && 1123 cse->tcomp == NULL) { 1124 cnop[req].status = EINVAL; 1125 goto bail; 1126 } 1127 1128 /* sanitize */ 1129 if (cnop[req].len <= 0) { 1130 cnop[req].status = ENOMEM; 1131 goto bail; 1132 } 1133 1134 crp = crypto_getreq((cse->txform != NULL) + 1135 (cse->thash != NULL) + 1136 (cse->tcomp != NULL)); 1137 if (crp == NULL) { 1138 cnop[req].status = ENOMEM; 1139 goto bail; 1140 } 1141 1142 iov_len = cnop[req].len; 1143 /* got a compression/decompression max size? */ 1144 if ((cse->tcomp) && cnop[req].dst_len) { 1145 if (iov_len < cnop[req].dst_len) { 1146 /* Need larger iov to deal with decompress */ 1147 iov_len = cnop[req].dst_len; 1148 } 1149 DPRINTF("iov_len -> %d for decompress\n", iov_len); 1150 } 1151 1152 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1153 crp->uio.uio_iovcnt = 1; 1154 crp->uio.uio_resid = 0; 1155 crp->uio.uio_rw = UIO_WRITE; 1156 crp->uio.uio_iov = crp->iovec; 1157 UIO_SETUP_SYSSPACE(&crp->uio); 1158 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1159 crp->uio.uio_iov[0].iov_len = iov_len; 1160 DPRINTF("kmem_alloc(%d) for iov \n", iov_len); 1161 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1162 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1163 1164 if (cse->tcomp) { 1165 crdc = crp->crp_desc; 1166 } 1167 1168 if (cse->thash) { 1169 crda = crdc ? crdc->crd_next : crp->crp_desc; 1170 if (cse->txform && crda) 1171 crde = crda->crd_next; 1172 } else { 1173 if (cse->txform) { 1174 crde = crdc ? crdc->crd_next : crp->crp_desc; 1175 } else if (!cse->tcomp) { 1176 error = EINVAL; 1177 goto bail; 1178 } 1179 } 1180 1181 if ((copyin(cnop[req].src, 1182 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1183 cnop[req].status = EINVAL; 1184 goto bail; 1185 } 1186 1187 if (crdc) { 1188 switch (cnop[req].op) { 1189 case COP_COMP: 1190 crdc->crd_flags |= CRD_F_COMP; 1191 break; 1192 case COP_DECOMP: 1193 crdc->crd_flags &= ~CRD_F_COMP; 1194 break; 1195 default: 1196 break; 1197 } 1198 /* more data to follow? */ 1199 if (cnop[req].flags & COP_F_MORE) { 1200 flags |= CRYPTO_F_MORE; 1201 } 1202 crdc->crd_len = cnop[req].len; 1203 crdc->crd_inject = 0; 1204 1205 crdc->crd_alg = cse->comp_alg; 1206 crdc->crd_key = NULL; 1207 crdc->crd_klen = 0; 1208 DPRINTF("cse->sid[%d]: crdc setup for comp_alg %d" 1209 " len %d.\n", 1210 (uint32_t)cse->sid, crdc->crd_alg, 1211 crdc->crd_len); 1212 } 1213 1214 if (crda) { 1215 crda->crd_skip = 0; 1216 crda->crd_len = cnop[req].len; 1217 crda->crd_inject = 0; /* ??? */ 1218 1219 crda->crd_alg = cse->mac; 1220 crda->crd_key = cse->mackey; 1221 crda->crd_klen = cse->mackeylen * 8; 1222 } 1223 1224 if (crde) { 1225 if (cnop[req].op == COP_ENCRYPT) 1226 crde->crd_flags |= CRD_F_ENCRYPT; 1227 else 1228 crde->crd_flags &= ~CRD_F_ENCRYPT; 1229 crde->crd_len = cnop[req].len; 1230 crde->crd_inject = 0; 1231 1232 crde->crd_alg = cse->cipher; 1233 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1234 if(cnop[req].key && cnop[req].keylen) { 1235 crde->crd_key = malloc(cnop[req].keylen, 1236 M_XDATA, M_WAITOK); 1237 if((error = copyin(cnop[req].key, 1238 crde->crd_key, cnop[req].keylen))) { 1239 cnop[req].status = EINVAL; 1240 goto bail; 1241 } 1242 crde->crd_klen = cnop[req].keylen * 8; 1243 } else { ... } 1244 #endif 1245 crde->crd_key = cse->key; 1246 crde->crd_klen = cse->keylen * 8; 1247 } 1248 1249 crp->crp_ilen = cnop[req].len; 1250 crp->crp_flags = CRYPTO_F_IOV | 1251 (cnop[req].flags & COP_F_BATCH) | flags; 1252 crp->crp_buf = (void *)&crp->uio; 1253 crp->crp_callback = cryptodev_mcb; 1254 crp->crp_sid = cse->sid; 1255 crp->crp_opaque = cse; 1256 crp->fcrp = fcr; 1257 crp->dst = cnop[req].dst; 1258 crp->len = cnop[req].len; /* input len, iov may be larger */ 1259 crp->mac = cnop[req].mac; 1260 DPRINTF("iov_base %p dst %p len %d mac %p\n", 1261 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1262 crp->mac); 1263 1264 if (cnop[req].iv) { 1265 if (crde == NULL) { 1266 cnop[req].status = EINVAL; 1267 goto bail; 1268 } 1269 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1270 cnop[req].status = EINVAL; 1271 goto bail; 1272 } 1273 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1274 cse->txform->ivsize))) { 1275 cnop[req].status = EINVAL; 1276 goto bail; 1277 } 1278 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1279 cse->txform->ivsize); 1280 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1281 crde->crd_skip = 0; 1282 } else if (crde) { 1283 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1284 crde->crd_skip = 0; 1285 } else { 1286 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1287 crde->crd_flags |= CRD_F_IV_PRESENT; 1288 crde->crd_skip = cse->txform->ivsize; 1289 crde->crd_len -= cse->txform->ivsize; 1290 } 1291 } 1292 1293 if (cnop[req].mac) { 1294 if (crda == NULL) { 1295 cnop[req].status = EINVAL; 1296 goto bail; 1297 } 1298 crp->crp_mac=cse->tmp_mac; 1299 } 1300 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1301 crp->crp_reqid = cnop[req].reqid; 1302 crp->crp_usropaque = cnop[req].opaque; 1303 cv_init(&crp->crp_cv, "crydev"); 1304 #ifdef notyet 1305 eagain: 1306 #endif 1307 cnop[req].status = crypto_dispatch(crp); 1308 mutex_enter(&cryptodev_mtx); /* XXX why mutex? */ 1309 1310 switch (cnop[req].status) { 1311 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1312 case EAGAIN: 1313 mutex_exit(&cryptodev_mtx); 1314 goto eagain; 1315 break; 1316 #endif 1317 case 0: 1318 break; 1319 default: 1320 DPRINTF("not waiting, error.\n"); 1321 mutex_exit(&cryptodev_mtx); 1322 cv_destroy(&crp->crp_cv); 1323 goto bail; 1324 } 1325 1326 mutex_exit(&cryptodev_mtx); 1327 cv_destroy(&crp->crp_cv); 1328 bail: 1329 if (cnop[req].status) { 1330 if (crp) { 1331 if (crp->uio.uio_iov[0].iov_base) { 1332 kmem_free(crp->uio.uio_iov[0].iov_base, 1333 crp->uio.uio_iov[0].iov_len); 1334 } 1335 crypto_freereq(crp); 1336 } 1337 error = 0; 1338 } 1339 } 1340 return error; 1341 } 1342 1343 static int 1344 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1345 { 1346 struct cryptkop *krp = NULL; 1347 int error = EINVAL; 1348 int in, out, size, i, req; 1349 1350 for (req = 0; req < count; req++) { 1351 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1352 return EFBIG; 1353 1354 in = kop[req].crk_iparams; 1355 out = kop[req].crk_oparams; 1356 switch (kop[req].crk_op) { 1357 case CRK_MOD_EXP: 1358 if (in == 3 && out == 1) 1359 break; 1360 kop[req].crk_status = EINVAL; 1361 continue; 1362 case CRK_MOD_EXP_CRT: 1363 if (in == 6 && out == 1) 1364 break; 1365 kop[req].crk_status = EINVAL; 1366 continue; 1367 case CRK_DSA_SIGN: 1368 if (in == 5 && out == 2) 1369 break; 1370 kop[req].crk_status = EINVAL; 1371 continue; 1372 case CRK_DSA_VERIFY: 1373 if (in == 7 && out == 0) 1374 break; 1375 kop[req].crk_status = EINVAL; 1376 continue; 1377 case CRK_DH_COMPUTE_KEY: 1378 if (in == 3 && out == 1) 1379 break; 1380 kop[req].crk_status = EINVAL; 1381 continue; 1382 case CRK_MOD_ADD: 1383 if (in == 3 && out == 1) 1384 break; 1385 kop[req].crk_status = EINVAL; 1386 continue; 1387 case CRK_MOD_ADDINV: 1388 if (in == 2 && out == 1) 1389 break; 1390 kop[req].crk_status = EINVAL; 1391 continue; 1392 case CRK_MOD_SUB: 1393 if (in == 3 && out == 1) 1394 break; 1395 kop[req].crk_status = EINVAL; 1396 continue; 1397 case CRK_MOD_MULT: 1398 if (in == 3 && out == 1) 1399 break; 1400 kop[req].crk_status = EINVAL; 1401 continue; 1402 case CRK_MOD_MULTINV: 1403 if (in == 2 && out == 1) 1404 break; 1405 kop[req].crk_status = EINVAL; 1406 continue; 1407 case CRK_MOD: 1408 if (in == 2 && out == 1) 1409 break; 1410 kop[req].crk_status = EINVAL; 1411 continue; 1412 default: 1413 kop[req].crk_status = EINVAL; 1414 continue; 1415 } 1416 1417 krp = crypto_kgetreq(1, PR_WAITOK); 1418 if (krp == NULL) { 1419 /* limited by opencrypto.crypto_ret_kq.maxlen */ 1420 continue; 1421 } 1422 (void)memset(krp, 0, sizeof *krp); 1423 cv_init(&krp->krp_cv, "crykdev"); 1424 krp->krp_op = kop[req].crk_op; 1425 krp->krp_status = kop[req].crk_status; 1426 krp->krp_iparams = kop[req].crk_iparams; 1427 krp->krp_oparams = kop[req].crk_oparams; 1428 krp->krp_status = 0; 1429 krp->krp_callback = cryptodevkey_mcb; 1430 (void)memcpy(krp->crk_param, kop[req].crk_param, 1431 sizeof(kop[req].crk_param)); 1432 1433 krp->krp_flags = 0; 1434 1435 for (i = 0; i < CRK_MAXPARAM; i++) 1436 krp->krp_param[i].crp_nbits = 1437 kop[req].crk_param[i].crp_nbits; 1438 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1439 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1440 if (size == 0) 1441 continue; 1442 krp->krp_param[i].crp_p = 1443 kmem_alloc(size, KM_SLEEP); 1444 if (i >= krp->krp_iparams) 1445 continue; 1446 kop[req].crk_status = 1447 copyin(kop[req].crk_param[i].crp_p, 1448 krp->krp_param[i].crp_p, size); 1449 if (kop[req].crk_status) 1450 goto fail; 1451 } 1452 krp->fcrp = fcr; 1453 1454 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1455 krp->krp_reqid = kop[req].crk_reqid; 1456 krp->krp_usropaque = kop[req].crk_opaque; 1457 1458 kop[req].crk_status = crypto_kdispatch(krp); 1459 if (kop[req].crk_status != 0) { 1460 goto fail; 1461 } 1462 1463 fail: 1464 if(kop[req].crk_status) { 1465 if (krp) { 1466 kop[req].crk_status = krp->krp_status; 1467 for (i = 0; i < CRK_MAXPARAM; i++) { 1468 struct crparam *kp = 1469 &(krp->krp_param[i]); 1470 if (kp->crp_p) { 1471 size = (kp->crp_nbits + 7) / 8; 1472 KASSERT(size > 0); 1473 memset(kp->crp_p, 0, size); 1474 kmem_free(kp->crp_p, size); 1475 } 1476 } 1477 cv_destroy(&krp->krp_cv); 1478 crypto_kfreereq(krp); 1479 } 1480 } 1481 error = 0; 1482 } 1483 DPRINTF("error=0x%08x\n", error); 1484 return error; 1485 } 1486 1487 int 1488 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1489 { 1490 struct cryptoini cria, crie; 1491 struct cryptoini cric; /* compressor */ 1492 struct cryptoini *crihead = NULL; 1493 const struct enc_xform *txform = NULL; 1494 const struct auth_hash *thash = NULL; 1495 const struct comp_algo *tcomp = NULL; 1496 struct csession *cse; 1497 u_int64_t sid; 1498 int error = 0; 1499 1500 DPRINTF("cipher=%d, mac=%d\n", sop->cipher, sop->mac); 1501 1502 /* XXX there must be a way to not embed the list of xforms here */ 1503 switch (sop->cipher) { 1504 case 0: 1505 break; 1506 case CRYPTO_DES_CBC: 1507 txform = &enc_xform_des; 1508 break; 1509 case CRYPTO_3DES_CBC: 1510 txform = &enc_xform_3des; 1511 break; 1512 case CRYPTO_BLF_CBC: 1513 txform = &enc_xform_blf; 1514 break; 1515 case CRYPTO_CAST_CBC: 1516 txform = &enc_xform_cast5; 1517 break; 1518 case CRYPTO_SKIPJACK_CBC: 1519 txform = &enc_xform_skipjack; 1520 break; 1521 case CRYPTO_AES_CBC: 1522 txform = &enc_xform_aes; 1523 break; 1524 case CRYPTO_CAMELLIA_CBC: 1525 txform = &enc_xform_camellia; 1526 break; 1527 case CRYPTO_AES_CTR: 1528 txform = &enc_xform_aes_ctr; 1529 break; 1530 case CRYPTO_AES_GCM_16: 1531 txform = &enc_xform_aes_gcm; 1532 break; 1533 case CRYPTO_AES_GMAC: 1534 txform = &enc_xform_aes_gmac; 1535 break; 1536 case CRYPTO_NULL_CBC: 1537 txform = &enc_xform_null; 1538 break; 1539 case CRYPTO_ARC4: 1540 txform = &enc_xform_arc4; 1541 break; 1542 default: 1543 DPRINTF("Invalid cipher %d\n", sop->cipher); 1544 return EINVAL; 1545 } 1546 1547 switch (sop->comp_alg) { 1548 case 0: 1549 break; 1550 case CRYPTO_DEFLATE_COMP: 1551 tcomp = &comp_algo_deflate; 1552 break; 1553 case CRYPTO_GZIP_COMP: 1554 tcomp = &comp_algo_gzip; 1555 DPRINTF("tcomp for GZIP\n"); 1556 break; 1557 default: 1558 DPRINTF("Invalid compression alg %d\n", sop->comp_alg); 1559 return EINVAL; 1560 } 1561 1562 switch (sop->mac) { 1563 case 0: 1564 break; 1565 case CRYPTO_MD5_HMAC: 1566 thash = &auth_hash_hmac_md5; 1567 break; 1568 case CRYPTO_SHA1_HMAC: 1569 thash = &auth_hash_hmac_sha1; 1570 break; 1571 case CRYPTO_MD5_HMAC_96: 1572 thash = &auth_hash_hmac_md5_96; 1573 break; 1574 case CRYPTO_SHA1_HMAC_96: 1575 thash = &auth_hash_hmac_sha1_96; 1576 break; 1577 case CRYPTO_SHA2_HMAC: 1578 /* XXX switching on key length seems questionable */ 1579 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1580 thash = &auth_hash_hmac_sha2_256; 1581 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1582 thash = &auth_hash_hmac_sha2_384; 1583 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1584 thash = &auth_hash_hmac_sha2_512; 1585 } else { 1586 DPRINTF("Invalid mackeylen %d\n", sop->mackeylen); 1587 return EINVAL; 1588 } 1589 break; 1590 case CRYPTO_SHA2_384_HMAC: 1591 thash = &auth_hash_hmac_sha2_384; 1592 break; 1593 case CRYPTO_SHA2_512_HMAC: 1594 thash = &auth_hash_hmac_sha2_512; 1595 break; 1596 case CRYPTO_RIPEMD160_HMAC: 1597 thash = &auth_hash_hmac_ripemd_160; 1598 break; 1599 case CRYPTO_RIPEMD160_HMAC_96: 1600 thash = &auth_hash_hmac_ripemd_160_96; 1601 break; 1602 case CRYPTO_MD5: 1603 thash = &auth_hash_md5; 1604 break; 1605 case CRYPTO_SHA1: 1606 thash = &auth_hash_sha1; 1607 break; 1608 case CRYPTO_AES_XCBC_MAC_96: 1609 thash = &auth_hash_aes_xcbc_mac_96; 1610 break; 1611 case CRYPTO_AES_128_GMAC: 1612 thash = &auth_hash_gmac_aes_128; 1613 break; 1614 case CRYPTO_AES_192_GMAC: 1615 thash = &auth_hash_gmac_aes_192; 1616 break; 1617 case CRYPTO_AES_256_GMAC: 1618 thash = &auth_hash_gmac_aes_256; 1619 break; 1620 case CRYPTO_NULL_HMAC: 1621 thash = &auth_hash_null; 1622 break; 1623 default: 1624 DPRINTF("Invalid mac %d\n", sop->mac); 1625 return EINVAL; 1626 } 1627 1628 memset(&crie, 0, sizeof(crie)); 1629 memset(&cria, 0, sizeof(cria)); 1630 memset(&cric, 0, sizeof(cric)); 1631 1632 if (tcomp) { 1633 cric.cri_alg = tcomp->type; 1634 cric.cri_klen = 0; 1635 DPRINTF("tcomp->type = %d\n", tcomp->type); 1636 1637 crihead = &cric; 1638 if (txform) { 1639 cric.cri_next = &crie; 1640 } else if (thash) { 1641 cric.cri_next = &cria; 1642 } 1643 } 1644 1645 if (txform) { 1646 crie.cri_alg = txform->type; 1647 crie.cri_klen = sop->keylen * 8; 1648 if (sop->keylen > txform->maxkey || 1649 sop->keylen < txform->minkey) { 1650 DPRINTF("keylen %d not in [%d,%d]\n", 1651 sop->keylen, txform->minkey, txform->maxkey); 1652 error = EINVAL; 1653 goto bail; 1654 } 1655 1656 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1657 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1658 goto bail; 1659 if (!crihead) { 1660 crihead = &crie; 1661 } 1662 if (thash) 1663 crie.cri_next = &cria; 1664 } 1665 1666 if (thash) { 1667 cria.cri_alg = thash->type; 1668 cria.cri_klen = sop->mackeylen * 8; 1669 if (sop->mackeylen != thash->keysize) { 1670 DPRINTF("mackeylen %d != keysize %d\n", 1671 sop->mackeylen, thash->keysize); 1672 error = EINVAL; 1673 goto bail; 1674 } 1675 if (cria.cri_klen) { 1676 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1677 M_WAITOK); 1678 if ((error = copyin(sop->mackey, cria.cri_key, 1679 cria.cri_klen / 8))) { 1680 goto bail; 1681 } 1682 } 1683 if (!crihead) { 1684 crihead = &cria; 1685 } 1686 } 1687 1688 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1689 if (!error) { 1690 DPRINTF("got session %d\n", (uint32_t)sid); 1691 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1692 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1693 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1694 if (cse != NULL) { 1695 sop->ses = cse->ses; 1696 } else { 1697 DPRINTF("csecreate failed\n"); 1698 crypto_freesession(sid); 1699 error = EINVAL; 1700 } 1701 } else { 1702 DPRINTF("SIOCSESSION violates kernel parameters %d\n", error); 1703 } 1704 bail: 1705 if (error) { 1706 if (crie.cri_key) { 1707 memset(crie.cri_key, 0, crie.cri_klen / 8); 1708 free(crie.cri_key, M_XDATA); 1709 } 1710 if (cria.cri_key) { 1711 memset(cria.cri_key, 0, cria.cri_klen / 8); 1712 free(cria.cri_key, M_XDATA); 1713 } 1714 } 1715 return error; 1716 } 1717 1718 int 1719 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1720 int count) 1721 { 1722 int i; 1723 1724 for (i = 0; i < count; i++, sn_ops++) { 1725 struct session_op s_op; 1726 s_op.cipher = sn_ops->cipher; 1727 s_op.mac = sn_ops->mac; 1728 s_op.comp_alg = sn_ops->comp_alg; 1729 s_op.keylen = sn_ops->keylen; 1730 s_op.key = sn_ops->key; 1731 s_op.mackeylen = sn_ops->mackeylen; 1732 s_op.mackey = sn_ops->mackey; 1733 s_op.ses = ~0; 1734 1735 sn_ops->status = cryptodev_session(fcr, &s_op); 1736 1737 sn_ops->ses = s_op.ses; 1738 } 1739 1740 return 0; 1741 } 1742 1743 static void 1744 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1745 { 1746 struct csession *cse; 1747 int req; 1748 1749 mutex_enter(&cryptodev_mtx); 1750 for(req = 0; req < count; req++) { 1751 cse = csefind(fcr, sesid[req]); 1752 if (cse == NULL) 1753 continue; 1754 csedelete(fcr, cse); 1755 mutex_exit(&cryptodev_mtx); 1756 csefree(cse); 1757 mutex_enter(&cryptodev_mtx); 1758 } 1759 mutex_exit(&cryptodev_mtx); 1760 } 1761 1762 /* 1763 * collect as many completed requests as are availble, or count completed 1764 * requests whichever is less. 1765 * return the number of requests. 1766 */ 1767 static int 1768 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1769 int count) 1770 { 1771 struct cryptop *crp = NULL; 1772 struct cryptkop *krp = NULL; 1773 struct csession *cse; 1774 int i, size, req = 0; 1775 int completed=0; 1776 1777 /* On queue so nobody else can grab them 1778 * and copyout can be delayed-- no locking */ 1779 TAILQ_HEAD(, cryptop) crp_delfree_q = 1780 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1781 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1782 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1783 1784 /* at this point we do not know which response user is requesting for 1785 * (symmetric or asymmetric) so we copyout one from each i.e if the 1786 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1787 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1788 1789 /* pull off a list of requests while protected from changes */ 1790 mutex_enter(&cryptodev_mtx); 1791 while (req < count) { 1792 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1793 if (crp) { 1794 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1795 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1796 cse = (struct csession *)crp->crp_opaque; 1797 1798 /* see if the session is still valid */ 1799 cse = csefind(fcr, cse->ses); 1800 if (cse != NULL) { 1801 crypt_res[req].status = 0; 1802 } else { 1803 DPRINTF("csefind failed\n"); 1804 crypt_res[req].status = EINVAL; 1805 } 1806 req++; 1807 } 1808 if(req < count) { 1809 crypt_res[req].status = 0; 1810 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1811 if (krp) { 1812 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1813 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1814 req++; 1815 } 1816 } 1817 } 1818 mutex_exit(&cryptodev_mtx); 1819 1820 /* now do all the work outside the mutex */ 1821 for(req=0; req < count ;) { 1822 crp = TAILQ_FIRST(&crp_delfree_q); 1823 if (crp) { 1824 if (crypt_res[req].status != 0) { 1825 /* csefind failed during collection */ 1826 goto bail; 1827 } 1828 cse = (struct csession *)crp->crp_opaque; 1829 crypt_res[req].reqid = crp->crp_reqid; 1830 crypt_res[req].opaque = crp->crp_usropaque; 1831 completed++; 1832 1833 if (crp->crp_etype != 0) { 1834 crypt_res[req].status = crp->crp_etype; 1835 goto bail; 1836 } 1837 1838 if (cse->error) { 1839 crypt_res[req].status = cse->error; 1840 goto bail; 1841 } 1842 1843 if (crp->dst && (crypt_res[req].status = 1844 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1845 crp->len))) 1846 goto bail; 1847 1848 if (crp->mac && (crypt_res[req].status = 1849 copyout(crp->crp_mac, crp->mac, 1850 cse->thash->authsize))) 1851 goto bail; 1852 1853 bail: 1854 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1855 kmem_free(crp->uio.uio_iov[0].iov_base, 1856 crp->uio.uio_iov[0].iov_len); 1857 crypto_freereq(crp); 1858 req++; 1859 } 1860 1861 if (req < count) { 1862 krp = TAILQ_FIRST(&krp_delfree_q); 1863 if (krp) { 1864 crypt_res[req].reqid = krp->krp_reqid; 1865 crypt_res[req].opaque = krp->krp_usropaque; 1866 completed++; 1867 if (krp->krp_status != 0) { 1868 DPRINTF("krp->krp_status 0x%08x\n", 1869 krp->krp_status); 1870 crypt_res[req].status = krp->krp_status; 1871 goto fail; 1872 } 1873 1874 for (i = krp->krp_iparams; i < krp->krp_iparams 1875 + krp->krp_oparams; i++) { 1876 size = (krp->krp_param[i].crp_nbits 1877 + 7) / 8; 1878 if (size == 0) 1879 continue; 1880 crypt_res[req].status = copyout 1881 (krp->krp_param[i].crp_p, 1882 krp->crk_param[i].crp_p, size); 1883 if (crypt_res[req].status) { 1884 DPRINTF("copyout oparam %d failed, " 1885 "error=%d\n", 1886 i - krp->krp_iparams, 1887 crypt_res[req].status); 1888 goto fail; 1889 } 1890 } 1891 fail: 1892 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1893 /* not sure what to do for this */ 1894 /* kop[req].crk_status = krp->krp_status; */ 1895 for (i = 0; i < CRK_MAXPARAM; i++) { 1896 struct crparam *kp = &(krp->krp_param[i]); 1897 if (kp->crp_p) { 1898 size = (kp->crp_nbits + 7) / 8; 1899 KASSERT(size > 0); 1900 (void)memset(kp->crp_p, 0, size); 1901 kmem_free(kp->crp_p, size); 1902 } 1903 } 1904 cv_destroy(&krp->krp_cv); 1905 crypto_kfreereq(krp); 1906 req++; 1907 } 1908 } 1909 } 1910 1911 return completed; 1912 } 1913 1914 static int 1915 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1916 { 1917 struct cryptop *crp = NULL, *cnext; 1918 struct cryptkop *krp = NULL, *knext; 1919 struct csession *cse; 1920 int i, size, req = 0; 1921 1922 mutex_enter(&cryptodev_mtx); 1923 /* Here we dont know for which request the user is requesting the 1924 * response so checking in both the queues */ 1925 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1926 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1927 cse = (struct csession *)crp->crp_opaque; 1928 crypt_res->opaque = crp->crp_usropaque; 1929 cse = csefind(fcr, cse->ses); 1930 if (cse == NULL) { 1931 DPRINTF("csefind failed\n"); 1932 crypt_res->status = EINVAL; 1933 goto bail; 1934 } 1935 1936 if (crp->crp_etype != 0) { 1937 crypt_res->status = crp->crp_etype; 1938 goto bail; 1939 } 1940 1941 if (cse->error) { 1942 crypt_res->status = cse->error; 1943 goto bail; 1944 } 1945 1946 if (crp->dst && (crypt_res->status = 1947 copyout(crp->uio.uio_iov[0].iov_base, 1948 crp->dst, crp->len))) 1949 goto bail; 1950 1951 if (crp->mac && (crypt_res->status = 1952 copyout(crp->crp_mac, crp->mac, 1953 cse->thash->authsize))) 1954 goto bail; 1955 bail: 1956 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1957 1958 mutex_exit(&cryptodev_mtx); 1959 crypto_freereq(crp); 1960 return 0; 1961 } 1962 } 1963 1964 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1965 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1966 crypt_res[req].opaque = krp->krp_usropaque; 1967 if (krp->krp_status != 0) { 1968 DPRINTF("krp->krp_status 0x%08x\n", 1969 krp->krp_status); 1970 crypt_res[req].status = krp->krp_status; 1971 goto fail; 1972 } 1973 1974 for (i = krp->krp_iparams; i < krp->krp_iparams + 1975 krp->krp_oparams; i++) { 1976 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1977 if (size == 0) 1978 continue; 1979 crypt_res[req].status = copyout( 1980 krp->krp_param[i].crp_p, 1981 krp->crk_param[i].crp_p, size); 1982 if (crypt_res[req].status) { 1983 DPRINTF("copyout oparam " 1984 "%d failed, error=%d\n", 1985 i - krp->krp_iparams, 1986 crypt_res[req].status); 1987 goto fail; 1988 } 1989 } 1990 fail: 1991 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1992 mutex_exit(&cryptodev_mtx); 1993 /* not sure what to do for this */ 1994 /* kop[req].crk_status = krp->krp_status; */ 1995 for (i = 0; i < CRK_MAXPARAM; i++) { 1996 struct crparam *kp = &(krp->krp_param[i]); 1997 if (kp->crp_p) { 1998 size = (kp->crp_nbits + 7) / 8; 1999 KASSERT(size > 0); 2000 memset(kp->crp_p, 0, size); 2001 kmem_free(kp->crp_p, size); 2002 } 2003 } 2004 cv_destroy(&krp->krp_cv); 2005 crypto_kfreereq(krp); 2006 return 0; 2007 } 2008 } 2009 mutex_exit(&cryptodev_mtx); 2010 return EINPROGRESS; 2011 } 2012 2013 static int 2014 cryptof_stat(struct file *fp, struct stat *st) 2015 { 2016 struct fcrypt *fcr = fp->f_fcrypt; 2017 2018 (void)memset(st, 0, sizeof(*st)); 2019 2020 mutex_enter(&cryptodev_mtx); 2021 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2022 st->st_atimespec = fcr->atime; 2023 st->st_mtimespec = fcr->mtime; 2024 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2025 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2026 st->st_gid = kauth_cred_getegid(fp->f_cred); 2027 mutex_exit(&cryptodev_mtx); 2028 2029 return 0; 2030 } 2031 2032 static int 2033 cryptof_poll(struct file *fp, int events) 2034 { 2035 struct fcrypt *fcr = fp->f_fcrypt; 2036 int revents = 0; 2037 2038 if (!(events & (POLLIN | POLLRDNORM))) { 2039 /* only support read and POLLIN */ 2040 return 0; 2041 } 2042 2043 mutex_enter(&cryptodev_mtx); 2044 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2045 /* no completed requests pending, save the poll for later */ 2046 selrecord(curlwp, &fcr->sinfo); 2047 } else { 2048 /* let the app(s) know that there are completed requests */ 2049 revents = events & (POLLIN | POLLRDNORM); 2050 } 2051 mutex_exit(&cryptodev_mtx); 2052 2053 return revents; 2054 } 2055 2056 /* 2057 * Pseudo-device initialization routine for /dev/crypto 2058 */ 2059 void 2060 cryptoattach(int num) 2061 { 2062 2063 crypto_init(); 2064 2065 mutex_init(&cryptodev_mtx, MUTEX_DEFAULT, IPL_NONE); 2066 2067 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2068 NULL, IPL_NONE); 2069 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2070 NULL, IPL_NONE); 2071 2072 /* 2073 * Preallocate space for 64 users, with 5 sessions each. 2074 * (consider that a TLS protocol session requires at least 2075 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2076 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2077 * consuming one session here for each algorithm. 2078 */ 2079 pool_prime(&fcrpl, 64); 2080 pool_prime(&csepl, 64 * 5); 2081 } 2082 2083 void crypto_attach(device_t, device_t, void *); 2084 2085 void 2086 crypto_attach(device_t parent, device_t self, void * opaque) 2087 { 2088 2089 cryptoattach(0); 2090 } 2091 2092 int crypto_detach(device_t, int); 2093 2094 int 2095 crypto_detach(device_t self, int num) 2096 { 2097 2098 pool_destroy(&fcrpl); 2099 pool_destroy(&csepl); 2100 2101 mutex_destroy(&cryptodev_mtx); 2102 2103 return 0; 2104 } 2105 2106 int crypto_match(device_t, cfdata_t, void *); 2107 2108 int 2109 crypto_match(device_t parent, cfdata_t data, void *opaque) 2110 { 2111 2112 return 1; 2113 } 2114 2115 MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto"); 2116 2117 CFDRIVER_DECL(crypto, DV_DULL, NULL); 2118 2119 CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, 2120 NULL, NULL, NULL); 2121 2122 #ifdef _MODULE 2123 static int cryptoloc[] = { -1, -1 }; 2124 2125 static struct cfdata crypto_cfdata[] = { 2126 { 2127 .cf_name = "crypto", 2128 .cf_atname = "crypto", 2129 .cf_unit = 0, 2130 .cf_fstate = 0, 2131 .cf_loc = cryptoloc, 2132 .cf_flags = 0, 2133 .cf_pspec = NULL, 2134 }, 2135 { NULL, NULL, 0, 0, NULL, 0, NULL } 2136 }; 2137 #endif 2138 2139 static int 2140 crypto_modcmd(modcmd_t cmd, void *arg) 2141 { 2142 int error = 0; 2143 #ifdef _MODULE 2144 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 2145 #endif 2146 2147 switch (cmd) { 2148 case MODULE_CMD_INIT: 2149 #ifdef _MODULE 2150 2151 error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, 2152 &crypto_cdevsw, &cmajor); 2153 if (error) { 2154 aprint_error("%s: unable to register devsw, error %d\n", 2155 crypto_cd.cd_name, error); 2156 return error; 2157 } 2158 2159 error = config_cfdriver_attach(&crypto_cd); 2160 if (error) { 2161 devsw_detach(NULL, &crypto_cdevsw); 2162 return error; 2163 } 2164 2165 error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); 2166 if (error) { 2167 config_cfdriver_detach(&crypto_cd); 2168 devsw_detach(NULL, &crypto_cdevsw); 2169 aprint_error("%s: unable to register cfattach\n", 2170 crypto_cd.cd_name); 2171 2172 return error; 2173 } 2174 2175 error = config_cfdata_attach(crypto_cfdata, 1); 2176 if (error) { 2177 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2178 config_cfdriver_detach(&crypto_cd); 2179 devsw_detach(NULL, &crypto_cdevsw); 2180 aprint_error("%s: unable to register cfdata\n", 2181 crypto_cd.cd_name); 2182 2183 return error; 2184 } 2185 2186 (void)config_attach_pseudo(crypto_cfdata); 2187 #endif 2188 2189 return error; 2190 case MODULE_CMD_FINI: 2191 #ifdef _MODULE 2192 if (crypto_refcount != 0) 2193 return EBUSY; 2194 error = config_cfdata_detach(crypto_cfdata); 2195 if (error) { 2196 return error; 2197 } 2198 2199 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2200 config_cfdriver_detach(&crypto_cd); 2201 devsw_detach(NULL, &crypto_cdevsw); 2202 #endif 2203 2204 return error; 2205 #ifdef _MODULE 2206 case MODULE_CMD_AUTOUNLOAD: 2207 #if 0 /* 2208 * XXX Completely disable auto-unload for now, since there is still 2209 * XXX a (small) window where in-module ref-counting doesn't help 2210 */ 2211 if (crypto_refcount != 0) 2212 #endif 2213 return EBUSY; 2214 /* FALLTHROUGH */ 2215 #endif 2216 default: 2217 return ENOTTY; 2218 } 2219 } 2220
Indexes created Tue Sep 23 07:09:52 GMT 2025