cryptodev.c revision 1.115
1 /* $NetBSD: cryptodev.c,v 1.115 2022/05/21 23:11:03 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 1.115 2022/05/21 23:11:03 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 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 int cryptodev_cb(struct cryptop *); 192 static int cryptodevkey_cb(struct cryptkop *); 193 194 static int cryptodev_mcb(struct cryptop *); 195 static int 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 DPRINTF("cryptodev_op[%u]: iov_len %d\n", 475 CRYPTO_SESID2LID(cse->sid), iov_len); 476 if ((cse->tcomp) && cop->dst_len) { 477 if (iov_len < cop->dst_len) { 478 /* Need larger iov to deal with decompress */ 479 iov_len = cop->dst_len; 480 } 481 DPRINTF("cryptodev_op: iov_len -> %d for decompress\n", iov_len); 482 } 483 484 (void)memset(&cse->uio, 0, sizeof(cse->uio)); 485 cse->uio.uio_iovcnt = 1; 486 cse->uio.uio_resid = 0; 487 cse->uio.uio_rw = UIO_WRITE; 488 cse->uio.uio_iov = cse->iovec; 489 UIO_SETUP_SYSSPACE(&cse->uio); 490 memset(&cse->iovec, 0, sizeof(cse->iovec)); 491 492 /* the iov needs to be big enough to handle the uncompressed 493 * data.... */ 494 cse->uio.uio_iov[0].iov_len = iov_len; 495 if (iov_len > 0) 496 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 497 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 498 DPRINTF("lid[%u]: uio.iov_base %p malloced %d bytes\n", 499 CRYPTO_SESID2LID(cse->sid), 500 cse->uio.uio_iov[0].iov_base, iov_len); 501 502 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 503 if (crp == NULL) { 504 error = ENOMEM; 505 goto bail; 506 } 507 DPRINTF("lid[%u]: crp %p\n", CRYPTO_SESID2LID(cse->sid), crp); 508 509 /* crds are always ordered tcomp, thash, then txform */ 510 /* with optional missing links */ 511 512 /* XXX: If we're going to compress then hash or encrypt, we need 513 * to be able to pass on the new size of the data. 514 */ 515 516 if (cse->tcomp) { 517 crdc = crp->crp_desc; 518 } 519 520 if (cse->thash) { 521 crda = crdc ? crdc->crd_next : crp->crp_desc; 522 if (cse->txform && crda) 523 crde = crda->crd_next; 524 } else { 525 if (cse->txform) { 526 crde = crdc ? crdc->crd_next : crp->crp_desc; 527 } else if (!cse->tcomp) { 528 error = EINVAL; 529 goto bail; 530 } 531 } 532 533 DPRINTF("ocf[%u]: iov_len %zu, cop->len %u\n", 534 CRYPTO_SESID2LID(cse->sid), 535 cse->uio.uio_iov[0].iov_len, 536 cop->len); 537 538 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 539 { 540 printf("copyin failed %s %d \n", (char *)cop->src, error); 541 goto bail; 542 } 543 544 if (crdc) { 545 switch (cop->op) { 546 case COP_COMP: 547 crdc->crd_flags |= CRD_F_COMP; 548 break; 549 case COP_DECOMP: 550 crdc->crd_flags &= ~CRD_F_COMP; 551 break; 552 default: 553 break; 554 } 555 /* more data to follow? */ 556 if (cop->flags & COP_F_MORE) { 557 flags |= CRYPTO_F_MORE; 558 } 559 crdc->crd_len = cop->len; 560 crdc->crd_inject = 0; 561 562 crdc->crd_alg = cse->comp_alg; 563 crdc->crd_key = NULL; 564 crdc->crd_klen = 0; 565 DPRINTF("lid[%u]: crdc setup for comp_alg %d.\n", 566 CRYPTO_SESID2LID(cse->sid), crdc->crd_alg); 567 } 568 569 if (crda) { 570 crda->crd_skip = 0; 571 crda->crd_len = cop->len; 572 crda->crd_inject = 0; /* ??? */ 573 574 crda->crd_alg = cse->mac; 575 crda->crd_key = cse->mackey; 576 crda->crd_klen = cse->mackeylen * 8; 577 DPRINTF("crda setup for mac %d.\n", crda->crd_alg); 578 } 579 580 if (crde) { 581 switch (cop->op) { 582 case COP_ENCRYPT: 583 crde->crd_flags |= CRD_F_ENCRYPT; 584 break; 585 case COP_DECRYPT: 586 crde->crd_flags &= ~CRD_F_ENCRYPT; 587 break; 588 default: 589 break; 590 } 591 crde->crd_len = cop->len; 592 crde->crd_inject = 0; 593 594 if (cse->cipher == CRYPTO_AES_GCM_16 && crda) 595 crda->crd_len = 0; 596 else if (cse->cipher == CRYPTO_AES_GMAC) 597 crde->crd_len = 0; 598 599 crde->crd_alg = cse->cipher; 600 crde->crd_key = cse->key; 601 crde->crd_klen = cse->keylen * 8; 602 DPRINTF("crde setup for cipher %d.\n", crde->crd_alg); 603 } 604 605 606 crp->crp_ilen = cop->len; 607 crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | flags; 608 crp->crp_buf = (void *)&cse->uio; 609 crp->crp_callback = cryptodev_cb; 610 crp->crp_sid = cse->sid; 611 crp->crp_opaque = cse; 612 613 if (cop->iv) { 614 if (crde == NULL) { 615 error = EINVAL; 616 goto bail; 617 } 618 if (cse->txform->ivsize == 0) { 619 error = EINVAL; 620 goto bail; 621 } 622 if ((error = copyin(cop->iv, cse->tmp_iv, 623 cse->txform->ivsize))) 624 goto bail; 625 (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); 626 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 627 crde->crd_skip = 0; 628 } else if (crde) { 629 if (cse->txform->ivsize == 0) { 630 crde->crd_skip = 0; 631 } else { 632 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 633 crde->crd_flags |= CRD_F_IV_PRESENT; 634 crde->crd_skip = cse->txform->ivsize; 635 crde->crd_len -= cse->txform->ivsize; 636 } 637 } 638 639 if (cop->mac) { 640 if (crda == NULL) { 641 error = EINVAL; 642 goto bail; 643 } 644 crp->crp_mac = cse->tmp_mac; 645 } 646 647 cv_init(&crp->crp_cv, "crydev"); 648 error = crypto_dispatch(crp); 649 if (error) { 650 DPRINTF("not waiting, error.\n"); 651 cv_destroy(&crp->crp_cv); 652 goto bail; 653 } 654 655 mutex_enter(&cryptodev_mtx); 656 while (!(crp->crp_devflags & CRYPTODEV_F_RET)) { 657 DPRINTF("cse->sid[%d]: sleeping on cv %p for crp %p\n", 658 (uint32_t)cse->sid, &crp->crp_cv, crp); 659 cv_wait(&crp->crp_cv, &cryptodev_mtx); /* XXX cv_wait_sig? */ 660 } 661 mutex_exit(&cryptodev_mtx); 662 cv_destroy(&crp->crp_cv); 663 664 if (crp->crp_etype != 0) { 665 DPRINTF("crp_etype %d\n", crp->crp_etype); 666 error = crp->crp_etype; 667 goto bail; 668 } 669 670 if (cse->error) { 671 DPRINTF("cse->error %d\n", cse->error); 672 error = cse->error; 673 goto bail; 674 } 675 676 dst_len = crp->crp_ilen; 677 /* let the user know how much data was returned */ 678 if (crp->crp_olen) { 679 if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { 680 error = ENOSPC; 681 goto bail; 682 } 683 dst_len = cop->dst_len = crp->crp_olen; 684 } 685 686 if (cop->dst) { 687 DPRINTF("copyout %d bytes to %p\n", dst_len, cop->dst); 688 } 689 if (cop->dst && 690 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 691 { 692 DPRINTF("copyout error %d\n", error); 693 goto bail; 694 } 695 696 if (cop->mac && 697 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 698 DPRINTF("mac copyout error %d\n", error); 699 goto bail; 700 } 701 702 703 bail: 704 if (crp) { 705 crypto_freereq(crp); 706 } 707 if (cse->uio.uio_iov[0].iov_base) { 708 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 709 } 710 711 return error; 712 } 713 714 static int 715 cryptodev_cb(struct cryptop *crp) 716 { 717 struct csession *cse = crp->crp_opaque; 718 int error = 0; 719 720 mutex_enter(&cryptodev_mtx); 721 cse->error = crp->crp_etype; 722 if (crp->crp_etype == EAGAIN) { 723 /* always drop mutex to call dispatch routine */ 724 mutex_exit(&cryptodev_mtx); 725 error = crypto_dispatch(crp); 726 mutex_enter(&cryptodev_mtx); 727 } 728 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 729 crp->crp_devflags |= CRYPTODEV_F_RET; 730 cv_signal(&crp->crp_cv); 731 } 732 mutex_exit(&cryptodev_mtx); 733 return 0; 734 } 735 736 static int 737 cryptodev_mcb(struct cryptop *crp) 738 { 739 struct csession *cse = crp->crp_opaque; 740 741 mutex_enter(&cryptodev_mtx); 742 cse->error = crp->crp_etype; 743 if (crp->crp_etype == EAGAIN) { 744 mutex_exit(&cryptodev_mtx); 745 (void)crypto_dispatch(crp); 746 mutex_enter(&cryptodev_mtx); 747 } 748 749 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 750 selnotify(&crp->fcrp->sinfo, 0, 0); 751 mutex_exit(&cryptodev_mtx); 752 return 0; 753 } 754 755 static int 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 return 0; 764 } 765 766 static int 767 cryptodevkey_mcb(struct cryptkop *krp) 768 { 769 770 mutex_enter(&cryptodev_mtx); 771 cv_signal(&krp->krp_cv); 772 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 773 selnotify(&krp->fcrp->sinfo, 0, 0); 774 mutex_exit(&cryptodev_mtx); 775 return 0; 776 } 777 778 static int 779 cryptodev_key(struct crypt_kop *kop) 780 { 781 struct cryptkop *krp = NULL; 782 int error = EINVAL; 783 int in, out, size, i; 784 785 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 786 return EFBIG; 787 788 in = kop->crk_iparams; 789 out = kop->crk_oparams; 790 switch (kop->crk_op) { 791 case CRK_MOD_EXP: 792 if (in == 3 && out == 1) 793 break; 794 return EINVAL; 795 case CRK_MOD_EXP_CRT: 796 if (in == 6 && out == 1) 797 break; 798 return EINVAL; 799 case CRK_DSA_SIGN: 800 if (in == 5 && out == 2) 801 break; 802 return EINVAL; 803 case CRK_DSA_VERIFY: 804 if (in == 7 && out == 0) 805 break; 806 return EINVAL; 807 case CRK_DH_COMPUTE_KEY: 808 if (in == 3 && out == 1) 809 break; 810 return EINVAL; 811 case CRK_MOD_ADD: 812 if (in == 3 && out == 1) 813 break; 814 return EINVAL; 815 case CRK_MOD_ADDINV: 816 if (in == 2 && out == 1) 817 break; 818 return EINVAL; 819 case CRK_MOD_SUB: 820 if (in == 3 && out == 1) 821 break; 822 return EINVAL; 823 case CRK_MOD_MULT: 824 if (in == 3 && out == 1) 825 break; 826 return EINVAL; 827 case CRK_MOD_MULTINV: 828 if (in == 2 && out == 1) 829 break; 830 return EINVAL; 831 case CRK_MOD: 832 if (in == 2 && out == 1) 833 break; 834 return EINVAL; 835 default: 836 return EINVAL; 837 } 838 839 krp = crypto_kgetreq(1, PR_WAITOK); 840 if (krp == NULL) { 841 /* limited by opencrypto.crypto_ret_kq.maxlen */ 842 return ENOMEM; 843 } 844 (void)memset(krp, 0, sizeof *krp); 845 cv_init(&krp->krp_cv, "crykdev"); 846 krp->krp_op = kop->crk_op; 847 krp->krp_status = kop->crk_status; 848 krp->krp_iparams = kop->crk_iparams; 849 krp->krp_oparams = kop->crk_oparams; 850 krp->krp_status = 0; 851 krp->krp_callback = cryptodevkey_cb; 852 853 for (i = 0; i < CRK_MAXPARAM; i++) 854 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 855 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 856 size = (krp->krp_param[i].crp_nbits + 7) / 8; 857 if (size == 0) 858 continue; 859 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 860 if (i >= krp->krp_iparams) 861 continue; 862 error = copyin(kop->crk_param[i].crp_p, 863 krp->krp_param[i].crp_p, size); 864 if (error) 865 goto fail; 866 } 867 868 error = crypto_kdispatch(krp); 869 if (error != 0) { 870 goto fail; 871 } 872 873 mutex_enter(&cryptodev_mtx); 874 while (!(krp->krp_devflags & CRYPTODEV_F_RET)) { 875 cv_wait(&krp->krp_cv, &cryptodev_mtx); /* XXX cv_wait_sig? */ 876 } 877 mutex_exit(&cryptodev_mtx); 878 879 if (krp->krp_status != 0) { 880 DPRINTF("krp->krp_status 0x%08x\n", krp->krp_status); 881 error = krp->krp_status; 882 goto fail; 883 } 884 885 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 886 i++) { 887 size = (krp->krp_param[i].crp_nbits + 7) / 8; 888 if (size == 0) 889 continue; 890 error = copyout(krp->krp_param[i].crp_p, 891 kop->crk_param[i].crp_p, size); 892 if (error) { 893 DPRINTF("copyout oparam %d failed, " 894 "error=%d\n", i-krp->krp_iparams, error); 895 goto fail; 896 } 897 } 898 899 fail: 900 kop->crk_status = krp->krp_status; 901 for (i = 0; i < CRK_MAXPARAM; i++) { 902 struct crparam *kp = &(krp->krp_param[i]); 903 if (krp->krp_param[i].crp_p) { 904 size = (kp->crp_nbits + 7) / 8; 905 KASSERT(size > 0); 906 (void)memset(kp->crp_p, 0, size); 907 kmem_free(kp->crp_p, size); 908 } 909 } 910 cv_destroy(&krp->krp_cv); 911 crypto_kfreereq(krp); 912 DPRINTF("error=0x%08x\n", error); 913 return error; 914 } 915 916 /* ARGSUSED */ 917 static int 918 cryptof_close(struct file *fp) 919 { 920 struct fcrypt *fcr = fp->f_fcrypt; 921 struct csession *cse; 922 923 mutex_enter(&cryptodev_mtx); 924 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 925 TAILQ_REMOVE(&fcr->csessions, cse, next); 926 mutex_exit(&cryptodev_mtx); 927 (void)csefree(cse); 928 mutex_enter(&cryptodev_mtx); 929 } 930 seldestroy(&fcr->sinfo); 931 fp->f_fcrypt = NULL; 932 crypto_refcount--; 933 mutex_exit(&cryptodev_mtx); 934 935 pool_put(&fcrpl, fcr); 936 return 0; 937 } 938 939 /* needed for compatibility module */ 940 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 941 { 942 return csefind(fcr, ses); 943 } 944 945 /* csefind: call with cryptodev_mtx held. */ 946 static struct csession * 947 csefind(struct fcrypt *fcr, u_int ses) 948 { 949 struct csession *cse, *cnext, *ret = NULL; 950 951 KASSERT(mutex_owned(&cryptodev_mtx)); 952 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 953 if (cse->ses == ses) 954 ret = cse; 955 956 return ret; 957 } 958 959 /* csedelete: call with cryptodev_mtx held. */ 960 static int 961 csedelete(struct fcrypt *fcr, struct csession *cse_del) 962 { 963 struct csession *cse, *cnext; 964 int ret = 0; 965 966 KASSERT(mutex_owned(&cryptodev_mtx)); 967 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 968 if (cse == cse_del) { 969 TAILQ_REMOVE(&fcr->csessions, cse, next); 970 ret = 1; 971 } 972 } 973 return ret; 974 } 975 976 static struct csession * 977 cseadd(struct fcrypt *fcr, struct csession *cse) 978 { 979 mutex_enter(&cryptodev_mtx); 980 /* don't let session ID wrap! */ 981 if (fcr->sesn + 1 == 0) return NULL; 982 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 983 cse->ses = fcr->sesn++; 984 mutex_exit(&cryptodev_mtx); 985 return cse; 986 } 987 988 static struct csession * 989 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 990 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 991 u_int32_t comp_alg, const struct enc_xform *txform, 992 const struct auth_hash *thash, const struct comp_algo *tcomp) 993 { 994 struct csession *cse; 995 996 cse = pool_get(&csepl, PR_NOWAIT); 997 if (cse == NULL) 998 return NULL; 999 cse->key = key; 1000 cse->keylen = keylen/8; 1001 cse->mackey = mackey; 1002 cse->mackeylen = mackeylen/8; 1003 cse->sid = sid; 1004 cse->cipher = cipher; 1005 cse->mac = mac; 1006 cse->comp_alg = comp_alg; 1007 cse->txform = txform; 1008 cse->thash = thash; 1009 cse->tcomp = tcomp; 1010 cse->error = 0; 1011 if (cseadd(fcr, cse)) 1012 return cse; 1013 else { 1014 pool_put(&csepl, cse); 1015 return NULL; 1016 } 1017 } 1018 1019 static int 1020 csefree(struct csession *cse) 1021 { 1022 int error; 1023 1024 error = crypto_freesession(cse->sid); 1025 if (cse->key) 1026 free(cse->key, M_XDATA); 1027 if (cse->mackey) 1028 free(cse->mackey, M_XDATA); 1029 pool_put(&csepl, cse); 1030 return error; 1031 } 1032 1033 static int 1034 cryptoopen(dev_t dev, int flag, int mode, 1035 struct lwp *l) 1036 { 1037 file_t *fp; 1038 struct fcrypt *fcr; 1039 int fd, error; 1040 1041 if (crypto_usercrypto == 0) 1042 return ENXIO; 1043 1044 if ((error = fd_allocfile(&fp, &fd)) != 0) 1045 return error; 1046 1047 fcr = pool_get(&fcrpl, PR_WAITOK); 1048 getnanotime(&fcr->btime); 1049 fcr->atime = fcr->mtime = fcr->btime; 1050 mutex_enter(&cryptodev_mtx); 1051 TAILQ_INIT(&fcr->csessions); 1052 TAILQ_INIT(&fcr->crp_ret_mq); 1053 TAILQ_INIT(&fcr->crp_ret_mkq); 1054 selinit(&fcr->sinfo); 1055 /* 1056 * Don't ever return session 0, to allow detection of 1057 * failed creation attempts with multi-create ioctl. 1058 */ 1059 fcr->sesn = 1; 1060 fcr->requestid = 1; 1061 crypto_refcount++; 1062 mutex_exit(&cryptodev_mtx); 1063 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1064 } 1065 1066 static int 1067 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1068 { 1069 return EIO; 1070 } 1071 1072 static int 1073 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1074 { 1075 return EIO; 1076 } 1077 1078 int 1079 cryptoselect(dev_t dev, int rw, struct lwp *l) 1080 { 1081 return 0; 1082 } 1083 1084 /*static*/ 1085 struct cdevsw crypto_cdevsw = { 1086 .d_open = cryptoopen, 1087 .d_close = noclose, 1088 .d_read = cryptoread, 1089 .d_write = cryptowrite, 1090 .d_ioctl = noioctl, 1091 .d_stop = nostop, 1092 .d_tty = notty, 1093 .d_poll = cryptoselect /*nopoll*/, 1094 .d_mmap = nommap, 1095 .d_kqfilter = nokqfilter, 1096 .d_discard = nodiscard, 1097 .d_flag = D_OTHER 1098 }; 1099 1100 int 1101 cryptodev_mop(struct fcrypt *fcr, 1102 struct crypt_n_op * cnop, 1103 int count, struct lwp *l) 1104 { 1105 struct cryptop *crp = NULL; 1106 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1107 int req, error=0; 1108 struct csession *cse; 1109 int flags=0; 1110 int iov_len; 1111 1112 for (req = 0; req < count; req++) { 1113 mutex_enter(&cryptodev_mtx); 1114 cse = csefind(fcr, cnop[req].ses); 1115 if (cse == NULL) { 1116 DPRINTF("csefind failed\n"); 1117 cnop[req].status = EINVAL; 1118 mutex_exit(&cryptodev_mtx); 1119 continue; 1120 } 1121 mutex_exit(&cryptodev_mtx); 1122 1123 if (cnop[req].len > 256*1024-4) { 1124 DPRINTF("length failed\n"); 1125 cnop[req].status = EINVAL; 1126 continue; 1127 } 1128 if (cse->txform) { 1129 if (cnop[req].len < cse->txform->blocksize - 1130 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1131 (cnop[req].len - 1132 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1133 % cse->txform->blocksize) { 1134 cnop[req].status = EINVAL; 1135 continue; 1136 } 1137 } 1138 1139 /* sanitize */ 1140 if (cnop[req].len <= 0) { 1141 cnop[req].status = ENOMEM; 1142 goto bail; 1143 } 1144 1145 crp = crypto_getreq((cse->txform != NULL) + 1146 (cse->thash != NULL) + 1147 (cse->tcomp != NULL)); 1148 if (crp == NULL) { 1149 cnop[req].status = ENOMEM; 1150 goto bail; 1151 } 1152 1153 iov_len = cnop[req].len; 1154 /* got a compression/decompression max size? */ 1155 if ((cse->tcomp) && cnop[req].dst_len) { 1156 if (iov_len < cnop[req].dst_len) { 1157 /* Need larger iov to deal with decompress */ 1158 iov_len = cnop[req].dst_len; 1159 } 1160 DPRINTF("iov_len -> %d for decompress\n", iov_len); 1161 } 1162 1163 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1164 crp->uio.uio_iovcnt = 1; 1165 crp->uio.uio_resid = 0; 1166 crp->uio.uio_rw = UIO_WRITE; 1167 crp->uio.uio_iov = crp->iovec; 1168 UIO_SETUP_SYSSPACE(&crp->uio); 1169 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1170 crp->uio.uio_iov[0].iov_len = iov_len; 1171 DPRINTF("kmem_alloc(%d) for iov \n", iov_len); 1172 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1173 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1174 1175 if (cse->tcomp) { 1176 crdc = crp->crp_desc; 1177 } 1178 1179 if (cse->thash) { 1180 crda = crdc ? crdc->crd_next : crp->crp_desc; 1181 if (cse->txform && crda) 1182 crde = crda->crd_next; 1183 } else { 1184 if (cse->txform) { 1185 crde = crdc ? crdc->crd_next : crp->crp_desc; 1186 } else if (!cse->tcomp) { 1187 error = EINVAL; 1188 goto bail; 1189 } 1190 } 1191 1192 if ((copyin(cnop[req].src, 1193 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1194 cnop[req].status = EINVAL; 1195 goto bail; 1196 } 1197 1198 if (crdc) { 1199 switch (cnop[req].op) { 1200 case COP_COMP: 1201 crdc->crd_flags |= CRD_F_COMP; 1202 break; 1203 case COP_DECOMP: 1204 crdc->crd_flags &= ~CRD_F_COMP; 1205 break; 1206 default: 1207 break; 1208 } 1209 /* more data to follow? */ 1210 if (cnop[req].flags & COP_F_MORE) { 1211 flags |= CRYPTO_F_MORE; 1212 } 1213 crdc->crd_len = cnop[req].len; 1214 crdc->crd_inject = 0; 1215 1216 crdc->crd_alg = cse->comp_alg; 1217 crdc->crd_key = NULL; 1218 crdc->crd_klen = 0; 1219 DPRINTF("cse->sid[%d]: crdc setup for comp_alg %d" 1220 " len %d.\n", 1221 (uint32_t)cse->sid, crdc->crd_alg, 1222 crdc->crd_len); 1223 } 1224 1225 if (crda) { 1226 crda->crd_skip = 0; 1227 crda->crd_len = cnop[req].len; 1228 crda->crd_inject = 0; /* ??? */ 1229 1230 crda->crd_alg = cse->mac; 1231 crda->crd_key = cse->mackey; 1232 crda->crd_klen = cse->mackeylen * 8; 1233 } 1234 1235 if (crde) { 1236 if (cnop[req].op == COP_ENCRYPT) 1237 crde->crd_flags |= CRD_F_ENCRYPT; 1238 else 1239 crde->crd_flags &= ~CRD_F_ENCRYPT; 1240 crde->crd_len = cnop[req].len; 1241 crde->crd_inject = 0; 1242 1243 crde->crd_alg = cse->cipher; 1244 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1245 if(cnop[req].key && cnop[req].keylen) { 1246 crde->crd_key = malloc(cnop[req].keylen, 1247 M_XDATA, M_WAITOK); 1248 if((error = copyin(cnop[req].key, 1249 crde->crd_key, cnop[req].keylen))) { 1250 cnop[req].status = EINVAL; 1251 goto bail; 1252 } 1253 crde->crd_klen = cnop[req].keylen * 8; 1254 } else { ... } 1255 #endif 1256 crde->crd_key = cse->key; 1257 crde->crd_klen = cse->keylen * 8; 1258 } 1259 1260 crp->crp_ilen = cnop[req].len; 1261 crp->crp_flags = CRYPTO_F_IOV | 1262 (cnop[req].flags & COP_F_BATCH) | flags; 1263 crp->crp_buf = (void *)&crp->uio; 1264 crp->crp_callback = cryptodev_mcb; 1265 crp->crp_sid = cse->sid; 1266 crp->crp_opaque = cse; 1267 crp->fcrp = fcr; 1268 crp->dst = cnop[req].dst; 1269 crp->len = cnop[req].len; /* input len, iov may be larger */ 1270 crp->mac = cnop[req].mac; 1271 DPRINTF("iov_base %p dst %p len %d mac %p\n", 1272 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1273 crp->mac); 1274 1275 if (cnop[req].iv) { 1276 if (crde == NULL) { 1277 cnop[req].status = EINVAL; 1278 goto bail; 1279 } 1280 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1281 cnop[req].status = EINVAL; 1282 goto bail; 1283 } 1284 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1285 cse->txform->ivsize))) { 1286 cnop[req].status = EINVAL; 1287 goto bail; 1288 } 1289 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1290 cse->txform->ivsize); 1291 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1292 crde->crd_skip = 0; 1293 } else if (crde) { 1294 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1295 crde->crd_skip = 0; 1296 } else { 1297 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1298 crde->crd_flags |= CRD_F_IV_PRESENT; 1299 crde->crd_skip = cse->txform->ivsize; 1300 crde->crd_len -= cse->txform->ivsize; 1301 } 1302 } 1303 1304 if (cnop[req].mac) { 1305 if (crda == NULL) { 1306 cnop[req].status = EINVAL; 1307 goto bail; 1308 } 1309 crp->crp_mac=cse->tmp_mac; 1310 } 1311 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1312 crp->crp_reqid = cnop[req].reqid; 1313 crp->crp_usropaque = cnop[req].opaque; 1314 cv_init(&crp->crp_cv, "crydev"); 1315 #ifdef notyet 1316 eagain: 1317 #endif 1318 cnop[req].status = crypto_dispatch(crp); 1319 mutex_enter(&cryptodev_mtx); /* XXX why mutex? */ 1320 1321 switch (cnop[req].status) { 1322 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1323 case EAGAIN: 1324 mutex_exit(&cryptodev_mtx); 1325 goto eagain; 1326 break; 1327 #endif 1328 case 0: 1329 break; 1330 default: 1331 DPRINTF("not waiting, error.\n"); 1332 mutex_exit(&cryptodev_mtx); 1333 cv_destroy(&crp->crp_cv); 1334 goto bail; 1335 } 1336 1337 mutex_exit(&cryptodev_mtx); 1338 cv_destroy(&crp->crp_cv); 1339 bail: 1340 if (cnop[req].status) { 1341 if (crp) { 1342 if (crp->uio.uio_iov[0].iov_base) { 1343 kmem_free(crp->uio.uio_iov[0].iov_base, 1344 crp->uio.uio_iov[0].iov_len); 1345 } 1346 crypto_freereq(crp); 1347 } 1348 error = 0; 1349 } 1350 } 1351 return error; 1352 } 1353 1354 static int 1355 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1356 { 1357 struct cryptkop *krp = NULL; 1358 int error = EINVAL; 1359 int in, out, size, i, req; 1360 1361 for (req = 0; req < count; req++) { 1362 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1363 return EFBIG; 1364 1365 in = kop[req].crk_iparams; 1366 out = kop[req].crk_oparams; 1367 switch (kop[req].crk_op) { 1368 case CRK_MOD_EXP: 1369 if (in == 3 && out == 1) 1370 break; 1371 kop[req].crk_status = EINVAL; 1372 continue; 1373 case CRK_MOD_EXP_CRT: 1374 if (in == 6 && out == 1) 1375 break; 1376 kop[req].crk_status = EINVAL; 1377 continue; 1378 case CRK_DSA_SIGN: 1379 if (in == 5 && out == 2) 1380 break; 1381 kop[req].crk_status = EINVAL; 1382 continue; 1383 case CRK_DSA_VERIFY: 1384 if (in == 7 && out == 0) 1385 break; 1386 kop[req].crk_status = EINVAL; 1387 continue; 1388 case CRK_DH_COMPUTE_KEY: 1389 if (in == 3 && out == 1) 1390 break; 1391 kop[req].crk_status = EINVAL; 1392 continue; 1393 case CRK_MOD_ADD: 1394 if (in == 3 && out == 1) 1395 break; 1396 kop[req].crk_status = EINVAL; 1397 continue; 1398 case CRK_MOD_ADDINV: 1399 if (in == 2 && out == 1) 1400 break; 1401 kop[req].crk_status = EINVAL; 1402 continue; 1403 case CRK_MOD_SUB: 1404 if (in == 3 && out == 1) 1405 break; 1406 kop[req].crk_status = EINVAL; 1407 continue; 1408 case CRK_MOD_MULT: 1409 if (in == 3 && out == 1) 1410 break; 1411 kop[req].crk_status = EINVAL; 1412 continue; 1413 case CRK_MOD_MULTINV: 1414 if (in == 2 && out == 1) 1415 break; 1416 kop[req].crk_status = EINVAL; 1417 continue; 1418 case CRK_MOD: 1419 if (in == 2 && out == 1) 1420 break; 1421 kop[req].crk_status = EINVAL; 1422 continue; 1423 default: 1424 kop[req].crk_status = EINVAL; 1425 continue; 1426 } 1427 1428 krp = crypto_kgetreq(1, PR_WAITOK); 1429 if (krp == NULL) { 1430 /* limited by opencrypto.crypto_ret_kq.maxlen */ 1431 continue; 1432 } 1433 (void)memset(krp, 0, sizeof *krp); 1434 cv_init(&krp->krp_cv, "crykdev"); 1435 krp->krp_op = kop[req].crk_op; 1436 krp->krp_status = kop[req].crk_status; 1437 krp->krp_iparams = kop[req].crk_iparams; 1438 krp->krp_oparams = kop[req].crk_oparams; 1439 krp->krp_status = 0; 1440 krp->krp_callback = cryptodevkey_mcb; 1441 (void)memcpy(krp->crk_param, kop[req].crk_param, 1442 sizeof(kop[req].crk_param)); 1443 1444 krp->krp_flags = 0; 1445 1446 for (i = 0; i < CRK_MAXPARAM; i++) 1447 krp->krp_param[i].crp_nbits = 1448 kop[req].crk_param[i].crp_nbits; 1449 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1450 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1451 if (size == 0) 1452 continue; 1453 krp->krp_param[i].crp_p = 1454 kmem_alloc(size, KM_SLEEP); 1455 if (i >= krp->krp_iparams) 1456 continue; 1457 kop[req].crk_status = 1458 copyin(kop[req].crk_param[i].crp_p, 1459 krp->krp_param[i].crp_p, size); 1460 if (kop[req].crk_status) 1461 goto fail; 1462 } 1463 krp->fcrp = fcr; 1464 1465 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1466 krp->krp_reqid = kop[req].crk_reqid; 1467 krp->krp_usropaque = kop[req].crk_opaque; 1468 1469 kop[req].crk_status = crypto_kdispatch(krp); 1470 if (kop[req].crk_status != 0) { 1471 goto fail; 1472 } 1473 1474 fail: 1475 if(kop[req].crk_status) { 1476 if (krp) { 1477 kop[req].crk_status = krp->krp_status; 1478 for (i = 0; i < CRK_MAXPARAM; i++) { 1479 struct crparam *kp = 1480 &(krp->krp_param[i]); 1481 if (kp->crp_p) { 1482 size = (kp->crp_nbits + 7) / 8; 1483 KASSERT(size > 0); 1484 memset(kp->crp_p, 0, size); 1485 kmem_free(kp->crp_p, size); 1486 } 1487 } 1488 cv_destroy(&krp->krp_cv); 1489 crypto_kfreereq(krp); 1490 } 1491 } 1492 error = 0; 1493 } 1494 DPRINTF("error=0x%08x\n", error); 1495 return error; 1496 } 1497 1498 int 1499 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1500 { 1501 struct cryptoini cria, crie; 1502 struct cryptoini cric; /* compressor */ 1503 struct cryptoini *crihead = NULL; 1504 const struct enc_xform *txform = NULL; 1505 const struct auth_hash *thash = NULL; 1506 const struct comp_algo *tcomp = NULL; 1507 struct csession *cse; 1508 u_int64_t sid; 1509 int error = 0; 1510 1511 DPRINTF("cipher=%d, mac=%d\n", sop->cipher, sop->mac); 1512 1513 /* XXX there must be a way to not embed the list of xforms here */ 1514 switch (sop->cipher) { 1515 case 0: 1516 break; 1517 case CRYPTO_DES_CBC: 1518 txform = &enc_xform_des; 1519 break; 1520 case CRYPTO_3DES_CBC: 1521 txform = &enc_xform_3des; 1522 break; 1523 case CRYPTO_BLF_CBC: 1524 txform = &enc_xform_blf; 1525 break; 1526 case CRYPTO_CAST_CBC: 1527 txform = &enc_xform_cast5; 1528 break; 1529 case CRYPTO_SKIPJACK_CBC: 1530 txform = &enc_xform_skipjack; 1531 break; 1532 case CRYPTO_AES_CBC: 1533 txform = &enc_xform_aes; 1534 break; 1535 case CRYPTO_CAMELLIA_CBC: 1536 txform = &enc_xform_camellia; 1537 break; 1538 case CRYPTO_AES_CTR: 1539 txform = &enc_xform_aes_ctr; 1540 break; 1541 case CRYPTO_AES_GCM_16: 1542 txform = &enc_xform_aes_gcm; 1543 break; 1544 case CRYPTO_AES_GMAC: 1545 txform = &enc_xform_aes_gmac; 1546 break; 1547 case CRYPTO_NULL_CBC: 1548 txform = &enc_xform_null; 1549 break; 1550 case CRYPTO_ARC4: 1551 txform = &enc_xform_arc4; 1552 break; 1553 default: 1554 DPRINTF("Invalid cipher %d\n", sop->cipher); 1555 return EINVAL; 1556 } 1557 1558 switch (sop->comp_alg) { 1559 case 0: 1560 break; 1561 case CRYPTO_DEFLATE_COMP: 1562 tcomp = &comp_algo_deflate; 1563 break; 1564 case CRYPTO_GZIP_COMP: 1565 tcomp = &comp_algo_gzip; 1566 DPRINTF("tcomp for GZIP\n"); 1567 break; 1568 default: 1569 DPRINTF("Invalid compression alg %d\n", sop->comp_alg); 1570 return EINVAL; 1571 } 1572 1573 switch (sop->mac) { 1574 case 0: 1575 break; 1576 case CRYPTO_MD5_HMAC: 1577 thash = &auth_hash_hmac_md5; 1578 break; 1579 case CRYPTO_SHA1_HMAC: 1580 thash = &auth_hash_hmac_sha1; 1581 break; 1582 case CRYPTO_MD5_HMAC_96: 1583 thash = &auth_hash_hmac_md5_96; 1584 break; 1585 case CRYPTO_SHA1_HMAC_96: 1586 thash = &auth_hash_hmac_sha1_96; 1587 break; 1588 case CRYPTO_SHA2_HMAC: 1589 /* XXX switching on key length seems questionable */ 1590 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1591 thash = &auth_hash_hmac_sha2_256; 1592 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1593 thash = &auth_hash_hmac_sha2_384; 1594 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1595 thash = &auth_hash_hmac_sha2_512; 1596 } else { 1597 DPRINTF("Invalid mackeylen %d\n", sop->mackeylen); 1598 return EINVAL; 1599 } 1600 break; 1601 case CRYPTO_SHA2_384_HMAC: 1602 thash = &auth_hash_hmac_sha2_384; 1603 break; 1604 case CRYPTO_SHA2_512_HMAC: 1605 thash = &auth_hash_hmac_sha2_512; 1606 break; 1607 case CRYPTO_RIPEMD160_HMAC: 1608 thash = &auth_hash_hmac_ripemd_160; 1609 break; 1610 case CRYPTO_RIPEMD160_HMAC_96: 1611 thash = &auth_hash_hmac_ripemd_160_96; 1612 break; 1613 case CRYPTO_MD5: 1614 thash = &auth_hash_md5; 1615 break; 1616 case CRYPTO_SHA1: 1617 thash = &auth_hash_sha1; 1618 break; 1619 case CRYPTO_AES_XCBC_MAC_96: 1620 thash = &auth_hash_aes_xcbc_mac_96; 1621 break; 1622 case CRYPTO_AES_128_GMAC: 1623 thash = &auth_hash_gmac_aes_128; 1624 break; 1625 case CRYPTO_AES_192_GMAC: 1626 thash = &auth_hash_gmac_aes_192; 1627 break; 1628 case CRYPTO_AES_256_GMAC: 1629 thash = &auth_hash_gmac_aes_256; 1630 break; 1631 case CRYPTO_NULL_HMAC: 1632 thash = &auth_hash_null; 1633 break; 1634 default: 1635 DPRINTF("Invalid mac %d\n", sop->mac); 1636 return EINVAL; 1637 } 1638 1639 memset(&crie, 0, sizeof(crie)); 1640 memset(&cria, 0, sizeof(cria)); 1641 memset(&cric, 0, sizeof(cric)); 1642 1643 if (tcomp) { 1644 cric.cri_alg = tcomp->type; 1645 cric.cri_klen = 0; 1646 DPRINTF("tcomp->type = %d\n", tcomp->type); 1647 1648 crihead = &cric; 1649 if (txform) { 1650 cric.cri_next = &crie; 1651 } else if (thash) { 1652 cric.cri_next = &cria; 1653 } 1654 } 1655 1656 if (txform) { 1657 crie.cri_alg = txform->type; 1658 crie.cri_klen = sop->keylen * 8; 1659 if (sop->keylen > txform->maxkey || 1660 sop->keylen < txform->minkey) { 1661 DPRINTF("keylen %d not in [%d,%d]\n", 1662 sop->keylen, txform->minkey, txform->maxkey); 1663 error = EINVAL; 1664 goto bail; 1665 } 1666 1667 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1668 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1669 goto bail; 1670 if (!crihead) { 1671 crihead = &crie; 1672 } 1673 if (thash) 1674 crie.cri_next = &cria; 1675 } 1676 1677 if (thash) { 1678 cria.cri_alg = thash->type; 1679 cria.cri_klen = sop->mackeylen * 8; 1680 if (sop->mackeylen != thash->keysize) { 1681 DPRINTF("mackeylen %d != keysize %d\n", 1682 sop->mackeylen, thash->keysize); 1683 error = EINVAL; 1684 goto bail; 1685 } 1686 if (cria.cri_klen) { 1687 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1688 M_WAITOK); 1689 if ((error = copyin(sop->mackey, cria.cri_key, 1690 cria.cri_klen / 8))) { 1691 goto bail; 1692 } 1693 } 1694 if (!crihead) { 1695 crihead = &cria; 1696 } 1697 } 1698 1699 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1700 if (!error) { 1701 DPRINTF("got session %d\n", (uint32_t)sid); 1702 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1703 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1704 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1705 if (cse != NULL) { 1706 sop->ses = cse->ses; 1707 } else { 1708 DPRINTF("csecreate failed\n"); 1709 crypto_freesession(sid); 1710 error = EINVAL; 1711 } 1712 } else { 1713 DPRINTF("SIOCSESSION violates kernel parameters %d\n", error); 1714 } 1715 bail: 1716 if (error) { 1717 if (crie.cri_key) { 1718 memset(crie.cri_key, 0, crie.cri_klen / 8); 1719 free(crie.cri_key, M_XDATA); 1720 } 1721 if (cria.cri_key) { 1722 memset(cria.cri_key, 0, cria.cri_klen / 8); 1723 free(cria.cri_key, M_XDATA); 1724 } 1725 } 1726 return error; 1727 } 1728 1729 int 1730 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1731 int count) 1732 { 1733 int i; 1734 1735 for (i = 0; i < count; i++, sn_ops++) { 1736 struct session_op s_op; 1737 s_op.cipher = sn_ops->cipher; 1738 s_op.mac = sn_ops->mac; 1739 s_op.comp_alg = sn_ops->comp_alg; 1740 s_op.keylen = sn_ops->keylen; 1741 s_op.key = sn_ops->key; 1742 s_op.mackeylen = sn_ops->mackeylen; 1743 s_op.mackey = sn_ops->mackey; 1744 s_op.ses = ~0; 1745 1746 sn_ops->status = cryptodev_session(fcr, &s_op); 1747 1748 sn_ops->ses = s_op.ses; 1749 } 1750 1751 return 0; 1752 } 1753 1754 static int 1755 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1756 { 1757 struct csession *cse; 1758 int req, error = 0; 1759 1760 mutex_enter(&cryptodev_mtx); 1761 for(req = 0; req < count; req++) { 1762 cse = csefind(fcr, sesid[req]); 1763 if (cse == NULL) 1764 continue; 1765 csedelete(fcr, cse); 1766 mutex_exit(&cryptodev_mtx); 1767 error = csefree(cse); 1768 mutex_enter(&cryptodev_mtx); 1769 } 1770 mutex_exit(&cryptodev_mtx); 1771 return error; 1772 } 1773 1774 /* 1775 * collect as many completed requests as are availble, or count completed 1776 * requests whichever is less. 1777 * return the number of requests. 1778 */ 1779 static int 1780 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1781 int count) 1782 { 1783 struct cryptop *crp = NULL; 1784 struct cryptkop *krp = NULL; 1785 struct csession *cse; 1786 int i, size, req = 0; 1787 int completed=0; 1788 1789 /* On queue so nobody else can grab them 1790 * and copyout can be delayed-- no locking */ 1791 TAILQ_HEAD(, cryptop) crp_delfree_q = 1792 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1793 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1794 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1795 1796 /* at this point we do not know which response user is requesting for 1797 * (symmetric or asymmetric) so we copyout one from each i.e if the 1798 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1799 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1800 1801 /* pull off a list of requests while protected from changes */ 1802 mutex_enter(&cryptodev_mtx); 1803 while (req < count) { 1804 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1805 if (crp) { 1806 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1807 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1808 cse = (struct csession *)crp->crp_opaque; 1809 1810 /* see if the session is still valid */ 1811 cse = csefind(fcr, cse->ses); 1812 if (cse != NULL) { 1813 crypt_res[req].status = 0; 1814 } else { 1815 DPRINTF("csefind failed\n"); 1816 crypt_res[req].status = EINVAL; 1817 } 1818 req++; 1819 } 1820 if(req < count) { 1821 crypt_res[req].status = 0; 1822 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1823 if (krp) { 1824 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1825 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1826 req++; 1827 } 1828 } 1829 } 1830 mutex_exit(&cryptodev_mtx); 1831 1832 /* now do all the work outside the mutex */ 1833 for(req=0; req < count ;) { 1834 crp = TAILQ_FIRST(&crp_delfree_q); 1835 if (crp) { 1836 if (crypt_res[req].status != 0) { 1837 /* csefind failed during collection */ 1838 goto bail; 1839 } 1840 cse = (struct csession *)crp->crp_opaque; 1841 crypt_res[req].reqid = crp->crp_reqid; 1842 crypt_res[req].opaque = crp->crp_usropaque; 1843 completed++; 1844 1845 if (crp->crp_etype != 0) { 1846 crypt_res[req].status = crp->crp_etype; 1847 goto bail; 1848 } 1849 1850 if (cse->error) { 1851 crypt_res[req].status = cse->error; 1852 goto bail; 1853 } 1854 1855 if (crp->dst && (crypt_res[req].status = 1856 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1857 crp->len))) 1858 goto bail; 1859 1860 if (crp->mac && (crypt_res[req].status = 1861 copyout(crp->crp_mac, crp->mac, 1862 cse->thash->authsize))) 1863 goto bail; 1864 1865 bail: 1866 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1867 kmem_free(crp->uio.uio_iov[0].iov_base, 1868 crp->uio.uio_iov[0].iov_len); 1869 crypto_freereq(crp); 1870 req++; 1871 } 1872 1873 if (req < count) { 1874 krp = TAILQ_FIRST(&krp_delfree_q); 1875 if (krp) { 1876 crypt_res[req].reqid = krp->krp_reqid; 1877 crypt_res[req].opaque = krp->krp_usropaque; 1878 completed++; 1879 if (krp->krp_status != 0) { 1880 DPRINTF("krp->krp_status 0x%08x\n", 1881 krp->krp_status); 1882 crypt_res[req].status = krp->krp_status; 1883 goto fail; 1884 } 1885 1886 for (i = krp->krp_iparams; i < krp->krp_iparams 1887 + krp->krp_oparams; i++) { 1888 size = (krp->krp_param[i].crp_nbits 1889 + 7) / 8; 1890 if (size == 0) 1891 continue; 1892 crypt_res[req].status = copyout 1893 (krp->krp_param[i].crp_p, 1894 krp->crk_param[i].crp_p, size); 1895 if (crypt_res[req].status) { 1896 DPRINTF("copyout oparam %d failed, " 1897 "error=%d\n", 1898 i - krp->krp_iparams, 1899 crypt_res[req].status); 1900 goto fail; 1901 } 1902 } 1903 fail: 1904 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1905 /* not sure what to do for this */ 1906 /* kop[req].crk_status = krp->krp_status; */ 1907 for (i = 0; i < CRK_MAXPARAM; i++) { 1908 struct crparam *kp = &(krp->krp_param[i]); 1909 if (kp->crp_p) { 1910 size = (kp->crp_nbits + 7) / 8; 1911 KASSERT(size > 0); 1912 (void)memset(kp->crp_p, 0, size); 1913 kmem_free(kp->crp_p, size); 1914 } 1915 } 1916 cv_destroy(&krp->krp_cv); 1917 crypto_kfreereq(krp); 1918 req++; 1919 } 1920 } 1921 } 1922 1923 return completed; 1924 } 1925 1926 static int 1927 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1928 { 1929 struct cryptop *crp = NULL, *cnext; 1930 struct cryptkop *krp = NULL, *knext; 1931 struct csession *cse; 1932 int i, size, req = 0; 1933 1934 mutex_enter(&cryptodev_mtx); 1935 /* Here we dont know for which request the user is requesting the 1936 * response so checking in both the queues */ 1937 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1938 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1939 cse = (struct csession *)crp->crp_opaque; 1940 crypt_res->opaque = crp->crp_usropaque; 1941 cse = csefind(fcr, cse->ses); 1942 if (cse == NULL) { 1943 DPRINTF("csefind failed\n"); 1944 crypt_res->status = EINVAL; 1945 goto bail; 1946 } 1947 1948 if (crp->crp_etype != 0) { 1949 crypt_res->status = crp->crp_etype; 1950 goto bail; 1951 } 1952 1953 if (cse->error) { 1954 crypt_res->status = cse->error; 1955 goto bail; 1956 } 1957 1958 if (crp->dst && (crypt_res->status = 1959 copyout(crp->uio.uio_iov[0].iov_base, 1960 crp->dst, crp->len))) 1961 goto bail; 1962 1963 if (crp->mac && (crypt_res->status = 1964 copyout(crp->crp_mac, crp->mac, 1965 cse->thash->authsize))) 1966 goto bail; 1967 bail: 1968 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1969 1970 mutex_exit(&cryptodev_mtx); 1971 crypto_freereq(crp); 1972 return 0; 1973 } 1974 } 1975 1976 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1977 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1978 crypt_res[req].opaque = krp->krp_usropaque; 1979 if (krp->krp_status != 0) { 1980 DPRINTF("krp->krp_status 0x%08x\n", 1981 krp->krp_status); 1982 crypt_res[req].status = krp->krp_status; 1983 goto fail; 1984 } 1985 1986 for (i = krp->krp_iparams; i < krp->krp_iparams + 1987 krp->krp_oparams; i++) { 1988 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1989 if (size == 0) 1990 continue; 1991 crypt_res[req].status = copyout( 1992 krp->krp_param[i].crp_p, 1993 krp->crk_param[i].crp_p, size); 1994 if (crypt_res[req].status) { 1995 DPRINTF("copyout oparam " 1996 "%d failed, error=%d\n", 1997 i - krp->krp_iparams, 1998 crypt_res[req].status); 1999 goto fail; 2000 } 2001 } 2002 fail: 2003 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 2004 mutex_exit(&cryptodev_mtx); 2005 /* not sure what to do for this */ 2006 /* kop[req].crk_status = krp->krp_status; */ 2007 for (i = 0; i < CRK_MAXPARAM; i++) { 2008 struct crparam *kp = &(krp->krp_param[i]); 2009 if (kp->crp_p) { 2010 size = (kp->crp_nbits + 7) / 8; 2011 KASSERT(size > 0); 2012 memset(kp->crp_p, 0, size); 2013 kmem_free(kp->crp_p, size); 2014 } 2015 } 2016 cv_destroy(&krp->krp_cv); 2017 crypto_kfreereq(krp); 2018 return 0; 2019 } 2020 } 2021 mutex_exit(&cryptodev_mtx); 2022 return EINPROGRESS; 2023 } 2024 2025 static int 2026 cryptof_stat(struct file *fp, struct stat *st) 2027 { 2028 struct fcrypt *fcr = fp->f_fcrypt; 2029 2030 (void)memset(st, 0, sizeof(*st)); 2031 2032 mutex_enter(&cryptodev_mtx); 2033 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2034 st->st_atimespec = fcr->atime; 2035 st->st_mtimespec = fcr->mtime; 2036 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2037 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2038 st->st_gid = kauth_cred_getegid(fp->f_cred); 2039 mutex_exit(&cryptodev_mtx); 2040 2041 return 0; 2042 } 2043 2044 static int 2045 cryptof_poll(struct file *fp, int events) 2046 { 2047 struct fcrypt *fcr = fp->f_fcrypt; 2048 int revents = 0; 2049 2050 if (!(events & (POLLIN | POLLRDNORM))) { 2051 /* only support read and POLLIN */ 2052 return 0; 2053 } 2054 2055 mutex_enter(&cryptodev_mtx); 2056 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2057 /* no completed requests pending, save the poll for later */ 2058 selrecord(curlwp, &fcr->sinfo); 2059 } else { 2060 /* let the app(s) know that there are completed requests */ 2061 revents = events & (POLLIN | POLLRDNORM); 2062 } 2063 mutex_exit(&cryptodev_mtx); 2064 2065 return revents; 2066 } 2067 2068 /* 2069 * Pseudo-device initialization routine for /dev/crypto 2070 */ 2071 void 2072 cryptoattach(int num) 2073 { 2074 2075 crypto_init(); 2076 2077 mutex_init(&cryptodev_mtx, MUTEX_DEFAULT, IPL_NONE); 2078 2079 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2080 NULL, IPL_NONE); 2081 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2082 NULL, IPL_NONE); 2083 2084 /* 2085 * Preallocate space for 64 users, with 5 sessions each. 2086 * (consider that a TLS protocol session requires at least 2087 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2088 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2089 * consuming one session here for each algorithm. 2090 */ 2091 pool_prime(&fcrpl, 64); 2092 pool_prime(&csepl, 64 * 5); 2093 } 2094 2095 void crypto_attach(device_t, device_t, void *); 2096 2097 void 2098 crypto_attach(device_t parent, device_t self, void * opaque) 2099 { 2100 2101 cryptoattach(0); 2102 } 2103 2104 int crypto_detach(device_t, int); 2105 2106 int 2107 crypto_detach(device_t self, int num) 2108 { 2109 2110 pool_destroy(&fcrpl); 2111 pool_destroy(&csepl); 2112 2113 mutex_destroy(&cryptodev_mtx); 2114 2115 return 0; 2116 } 2117 2118 int crypto_match(device_t, cfdata_t, void *); 2119 2120 int 2121 crypto_match(device_t parent, cfdata_t data, void *opaque) 2122 { 2123 2124 return 1; 2125 } 2126 2127 MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto"); 2128 2129 CFDRIVER_DECL(crypto, DV_DULL, NULL); 2130 2131 CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, 2132 NULL, NULL, NULL); 2133 2134 #ifdef _MODULE 2135 static int cryptoloc[] = { -1, -1 }; 2136 2137 static struct cfdata crypto_cfdata[] = { 2138 { 2139 .cf_name = "crypto", 2140 .cf_atname = "crypto", 2141 .cf_unit = 0, 2142 .cf_fstate = 0, 2143 .cf_loc = cryptoloc, 2144 .cf_flags = 0, 2145 .cf_pspec = NULL, 2146 }, 2147 { NULL, NULL, 0, 0, NULL, 0, NULL } 2148 }; 2149 #endif 2150 2151 static int 2152 crypto_modcmd(modcmd_t cmd, void *arg) 2153 { 2154 int error = 0; 2155 #ifdef _MODULE 2156 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 2157 #endif 2158 2159 switch (cmd) { 2160 case MODULE_CMD_INIT: 2161 #ifdef _MODULE 2162 2163 error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, 2164 &crypto_cdevsw, &cmajor); 2165 if (error) { 2166 aprint_error("%s: unable to register devsw, error %d\n", 2167 crypto_cd.cd_name, error); 2168 return error; 2169 } 2170 2171 error = config_cfdriver_attach(&crypto_cd); 2172 if (error) { 2173 devsw_detach(NULL, &crypto_cdevsw); 2174 return error; 2175 } 2176 2177 error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); 2178 if (error) { 2179 config_cfdriver_detach(&crypto_cd); 2180 devsw_detach(NULL, &crypto_cdevsw); 2181 aprint_error("%s: unable to register cfattach\n", 2182 crypto_cd.cd_name); 2183 2184 return error; 2185 } 2186 2187 error = config_cfdata_attach(crypto_cfdata, 1); 2188 if (error) { 2189 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2190 config_cfdriver_detach(&crypto_cd); 2191 devsw_detach(NULL, &crypto_cdevsw); 2192 aprint_error("%s: unable to register cfdata\n", 2193 crypto_cd.cd_name); 2194 2195 return error; 2196 } 2197 2198 (void)config_attach_pseudo(crypto_cfdata); 2199 #endif 2200 2201 return error; 2202 case MODULE_CMD_FINI: 2203 #ifdef _MODULE 2204 if (crypto_refcount != 0) 2205 return EBUSY; 2206 error = config_cfdata_detach(crypto_cfdata); 2207 if (error) { 2208 return error; 2209 } 2210 2211 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2212 config_cfdriver_detach(&crypto_cd); 2213 devsw_detach(NULL, &crypto_cdevsw); 2214 #endif 2215 2216 return error; 2217 #ifdef _MODULE 2218 case MODULE_CMD_AUTOUNLOAD: 2219 #if 0 /* 2220 * XXX Completely disable auto-unload for now, since there is still 2221 * XXX a (small) window where in-module ref-counting doesn't help 2222 */ 2223 if (crypto_refcount != 0) 2224 #endif 2225 return EBUSY; 2226 /* FALLTHROUGH */ 2227 #endif 2228 default: 2229 return ENOTTY; 2230 } 2231 } 2232
Indexes created Thu Oct 02 14:10:14 GMT 2025