cryptodev.c revision 1.65
1 /* $NetBSD: cryptodev.c,v 1.65 2011/05/26 20:33:24 drochner 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 1.65 2011/05/26 20:33:24 drochner 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 89 #include "opt_ocf.h" 90 #include "opt_compat_netbsd.h" 91 #include <opencrypto/cryptodev.h> 92 #include <opencrypto/cryptodev_internal.h> 93 #include <opencrypto/xform.h> 94 95 struct csession { 96 TAILQ_ENTRY(csession) next; 97 u_int64_t sid; 98 u_int32_t ses; 99 100 u_int32_t cipher; /* note: shares name space in crd_alg */ 101 const struct enc_xform *txform; 102 u_int32_t mac; /* note: shares name space in crd_alg */ 103 const struct auth_hash *thash; 104 u_int32_t comp_alg; /* note: shares name space in crd_alg */ 105 const struct comp_algo *tcomp; 106 107 void * key; 108 int keylen; 109 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 110 111 void * mackey; 112 int mackeylen; 113 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 114 115 struct iovec iovec[1]; /* user requests never have more */ 116 struct uio uio; 117 int error; 118 }; 119 120 struct fcrypt { 121 TAILQ_HEAD(csessionlist, csession) csessions; 122 TAILQ_HEAD(crprethead, cryptop) crp_ret_mq; 123 TAILQ_HEAD(krprethead, cryptkop) crp_ret_mkq; 124 int sesn; 125 struct selinfo sinfo; 126 u_int32_t requestid; 127 struct timespec atime; 128 struct timespec mtime; 129 struct timespec btime; 130 }; 131 132 /* For our fixed-size allocations */ 133 static struct pool fcrpl; 134 static struct pool csepl; 135 136 /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ 137 static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l); 138 static int cryptoread(dev_t dev, struct uio *uio, int ioflag); 139 static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); 140 static int cryptoselect(dev_t dev, int rw, struct lwp *l); 141 142 /* Declaration of cloned-device (per-ctxt) entrypoints */ 143 static int cryptof_read(struct file *, off_t *, struct uio *, 144 kauth_cred_t, int); 145 static int cryptof_write(struct file *, off_t *, struct uio *, 146 kauth_cred_t, int); 147 static int cryptof_ioctl(struct file *, u_long, void *); 148 static int cryptof_close(struct file *); 149 static int cryptof_poll(struct file *, int); 150 static int cryptof_stat(struct file *, struct stat *); 151 152 static const struct fileops cryptofops = { 153 .fo_read = cryptof_read, 154 .fo_write = cryptof_write, 155 .fo_ioctl = cryptof_ioctl, 156 .fo_fcntl = fnullop_fcntl, 157 .fo_poll = cryptof_poll, 158 .fo_stat = cryptof_stat, 159 .fo_close = cryptof_close, 160 .fo_kqfilter = fnullop_kqfilter, 161 .fo_restart = fnullop_restart, 162 }; 163 164 struct csession *cryptodev_csefind(struct fcrypt *, u_int); 165 static struct csession *csefind(struct fcrypt *, u_int); 166 static int csedelete(struct fcrypt *, struct csession *); 167 static struct csession *cseadd(struct fcrypt *, struct csession *); 168 static struct csession *csecreate(struct fcrypt *, u_int64_t, void *, 169 u_int64_t, void *, u_int64_t, u_int32_t, u_int32_t, u_int32_t, 170 const struct enc_xform *, const struct auth_hash *, 171 const struct comp_algo *); 172 static int csefree(struct csession *); 173 174 static int cryptodev_key(struct crypt_kop *); 175 static int cryptodev_mkey(struct fcrypt *, struct crypt_n_kop *, int); 176 static int cryptodev_msessionfin(struct fcrypt *, int, u_int32_t *); 177 178 static int cryptodev_cb(void *); 179 static int cryptodevkey_cb(void *); 180 181 static int cryptodev_mcb(void *); 182 static int cryptodevkey_mcb(void *); 183 184 static int cryptodev_getmstatus(struct fcrypt *, struct crypt_result *, 185 int); 186 static int cryptodev_getstatus(struct fcrypt *, struct crypt_result *); 187 188 #ifdef COMPAT_50 189 extern int ocryptof_ioctl(struct file *, u_long, void *); 190 #endif 191 192 /* 193 * sysctl-able control variables for /dev/crypto now defined in crypto.c: 194 * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. 195 */ 196 197 /* ARGSUSED */ 198 int 199 cryptof_read(file_t *fp, off_t *poff, 200 struct uio *uio, kauth_cred_t cred, int flags) 201 { 202 return EIO; 203 } 204 205 /* ARGSUSED */ 206 int 207 cryptof_write(file_t *fp, off_t *poff, 208 struct uio *uio, kauth_cred_t cred, int flags) 209 { 210 return EIO; 211 } 212 213 /* ARGSUSED */ 214 int 215 cryptof_ioctl(struct file *fp, u_long cmd, void *data) 216 { 217 struct fcrypt *fcr = fp->f_data; 218 struct csession *cse; 219 struct session_op *sop; 220 struct session_n_op *snop; 221 struct crypt_op *cop; 222 struct crypt_mop *mop; 223 struct crypt_mkop *mkop; 224 struct crypt_n_op *cnop; 225 struct crypt_n_kop *knop; 226 struct crypt_sgop *sgop; 227 struct crypt_sfop *sfop; 228 struct cryptret *crypt_ret; 229 struct crypt_result *crypt_res; 230 u_int32_t ses; 231 u_int32_t *sesid; 232 int error = 0; 233 size_t count; 234 235 /* backwards compatibility */ 236 file_t *criofp; 237 struct fcrypt *criofcr; 238 int criofd; 239 240 mutex_enter(&crypto_mtx); 241 getnanotime(&fcr->atime); 242 mutex_exit(&crypto_mtx); 243 244 switch (cmd) { 245 case CRIOGET: /* XXX deprecated, remove after 5.0 */ 246 if ((error = fd_allocfile(&criofp, &criofd)) != 0) 247 return error; 248 criofcr = pool_get(&fcrpl, PR_WAITOK); 249 mutex_enter(&crypto_mtx); 250 TAILQ_INIT(&criofcr->csessions); 251 TAILQ_INIT(&criofcr->crp_ret_mq); 252 TAILQ_INIT(&criofcr->crp_ret_mkq); 253 selinit(&criofcr->sinfo); 254 255 /* 256 * Don't ever return session 0, to allow detection of 257 * failed creation attempts with multi-create ioctl. 258 */ 259 criofcr->sesn = 1; 260 criofcr->requestid = 1; 261 mutex_exit(&crypto_mtx); 262 (void)fd_clone(criofp, criofd, (FREAD|FWRITE), 263 &cryptofops, criofcr); 264 *(u_int32_t *)data = criofd; 265 return error; 266 break; 267 case CIOCGSESSION: 268 sop = (struct session_op *)data; 269 error = cryptodev_session(fcr, sop); 270 break; 271 case CIOCNGSESSION: 272 sgop = (struct crypt_sgop *)data; 273 snop = kmem_alloc((sgop->count * 274 sizeof(struct session_n_op)), KM_SLEEP); 275 error = copyin(sgop->sessions, snop, sgop->count * 276 sizeof(struct session_n_op)); 277 if (error) { 278 goto mbail; 279 } 280 281 mutex_enter(&crypto_mtx); 282 fcr->mtime = fcr->atime; 283 mutex_exit(&crypto_mtx); 284 error = cryptodev_msession(fcr, snop, sgop->count); 285 if (error) { 286 goto mbail; 287 } 288 289 error = copyout(snop, sgop->sessions, sgop->count * 290 sizeof(struct session_n_op)); 291 mbail: 292 kmem_free(snop, sgop->count * sizeof(struct session_n_op)); 293 break; 294 case CIOCFSESSION: 295 mutex_enter(&crypto_mtx); 296 fcr->mtime = fcr->atime; 297 ses = *(u_int32_t *)data; 298 cse = csefind(fcr, ses); 299 if (cse == NULL) { 300 mutex_exit(&crypto_mtx); 301 return EINVAL; 302 } 303 csedelete(fcr, cse); 304 mutex_exit(&crypto_mtx); 305 error = csefree(cse); 306 break; 307 case CIOCNFSESSION: 308 mutex_enter(&crypto_mtx); 309 fcr->mtime = fcr->atime; 310 mutex_exit(&crypto_mtx); 311 sfop = (struct crypt_sfop *)data; 312 sesid = kmem_alloc((sfop->count * sizeof(u_int32_t)), 313 KM_SLEEP); 314 error = copyin(sfop->sesid, sesid, 315 (sfop->count * sizeof(u_int32_t))); 316 if (!error) { 317 error = cryptodev_msessionfin(fcr, sfop->count, sesid); 318 } 319 kmem_free(sesid, (sfop->count * sizeof(u_int32_t))); 320 break; 321 case CIOCCRYPT: 322 mutex_enter(&crypto_mtx); 323 fcr->mtime = fcr->atime; 324 cop = (struct crypt_op *)data; 325 cse = csefind(fcr, cop->ses); 326 mutex_exit(&crypto_mtx); 327 if (cse == NULL) { 328 DPRINTF(("csefind failed\n")); 329 return EINVAL; 330 } 331 error = cryptodev_op(cse, cop, curlwp); 332 DPRINTF(("cryptodev_op error = %d\n", error)); 333 break; 334 case CIOCNCRYPTM: 335 mutex_enter(&crypto_mtx); 336 fcr->mtime = fcr->atime; 337 mutex_exit(&crypto_mtx); 338 mop = (struct crypt_mop *)data; 339 cnop = kmem_alloc((mop->count * sizeof(struct crypt_n_op)), 340 KM_SLEEP); 341 error = copyin(mop->reqs, cnop, 342 (mop->count * sizeof(struct crypt_n_op))); 343 if(!error) { 344 error = cryptodev_mop(fcr, cnop, mop->count, curlwp); 345 if (!error) { 346 error = copyout(cnop, mop->reqs, 347 (mop->count * sizeof(struct crypt_n_op))); 348 } 349 } 350 kmem_free(cnop, (mop->count * sizeof(struct crypt_n_op))); 351 break; 352 case CIOCKEY: 353 error = cryptodev_key((struct crypt_kop *)data); 354 DPRINTF(("cryptodev_key error = %d\n", error)); 355 break; 356 case CIOCNFKEYM: 357 mutex_enter(&crypto_mtx); 358 fcr->mtime = fcr->atime; 359 mutex_exit(&crypto_mtx); 360 mkop = (struct crypt_mkop *)data; 361 knop = kmem_alloc((mkop->count * sizeof(struct crypt_n_kop)), 362 KM_SLEEP); 363 error = copyin(mkop->reqs, knop, 364 (mkop->count * sizeof(struct crypt_n_kop))); 365 if (!error) { 366 error = cryptodev_mkey(fcr, knop, mkop->count); 367 if (!error) 368 error = copyout(knop, mkop->reqs, 369 (mkop->count * sizeof(struct crypt_n_kop))); 370 } 371 kmem_free(knop, (mkop->count * sizeof(struct crypt_n_kop))); 372 break; 373 case CIOCASYMFEAT: 374 error = crypto_getfeat((int *)data); 375 break; 376 case CIOCNCRYPTRETM: 377 mutex_enter(&crypto_mtx); 378 fcr->mtime = fcr->atime; 379 mutex_exit(&crypto_mtx); 380 crypt_ret = (struct cryptret *)data; 381 count = crypt_ret->count; 382 crypt_res = kmem_alloc((count * sizeof(struct crypt_result)), 383 KM_SLEEP); 384 error = copyin(crypt_ret->results, crypt_res, 385 (count * sizeof(struct crypt_result))); 386 if (error) 387 goto reterr; 388 crypt_ret->count = cryptodev_getmstatus(fcr, crypt_res, 389 crypt_ret->count); 390 /* sanity check count */ 391 if (crypt_ret->count > count) { 392 printf("%s.%d: error returned count %zd > original " 393 " count %zd\n", 394 __FILE__, __LINE__, crypt_ret->count, count); 395 crypt_ret->count = count; 396 397 } 398 error = copyout(crypt_res, crypt_ret->results, 399 (crypt_ret->count * sizeof(struct crypt_result))); 400 reterr: 401 kmem_free(crypt_res, (count * sizeof(struct crypt_result))); 402 break; 403 case CIOCNCRYPTRET: 404 error = cryptodev_getstatus(fcr, (struct crypt_result *)data); 405 break; 406 default: 407 #ifdef COMPAT_50 408 /* Check for backward compatible commands */ 409 error = ocryptof_ioctl(fp, cmd, data); 410 #else 411 return EINVAL; 412 #endif 413 } 414 return error; 415 } 416 417 int 418 cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l) 419 { 420 struct cryptop *crp = NULL; 421 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 422 int error; 423 int iov_len = cop->len; 424 int flags=0; 425 int dst_len; /* copyout size */ 426 427 if (cop->len > 256*1024-4) 428 return E2BIG; 429 430 if (cse->txform) { 431 if (cop->len < cse->txform->blocksize 432 + (cop->iv ? 0 : cse->txform->ivsize) || 433 (cop->len - (cop->iv ? 0 : cse->txform->ivsize)) 434 % cse->txform->blocksize != 0) 435 return EINVAL; 436 } 437 438 DPRINTF(("cryptodev_op[%u]: iov_len %d\n", 439 CRYPTO_SESID2LID(cse->sid), iov_len)); 440 if ((cse->tcomp) && cop->dst_len) { 441 if (iov_len < cop->dst_len) { 442 /* Need larger iov to deal with decompress */ 443 iov_len = cop->dst_len; 444 } 445 DPRINTF(("cryptodev_op: iov_len -> %d for decompress\n", iov_len)); 446 } 447 448 (void)memset(&cse->uio, 0, sizeof(cse->uio)); 449 cse->uio.uio_iovcnt = 1; 450 cse->uio.uio_resid = 0; 451 cse->uio.uio_rw = UIO_WRITE; 452 cse->uio.uio_iov = cse->iovec; 453 UIO_SETUP_SYSSPACE(&cse->uio); 454 memset(&cse->iovec, 0, sizeof(cse->iovec)); 455 456 /* the iov needs to be big enough to handle the uncompressed 457 * data.... */ 458 cse->uio.uio_iov[0].iov_len = iov_len; 459 if (iov_len > 0) 460 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 461 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 462 DPRINTF(("cryptodev_op[%u]: uio.iov_base %p malloced %d bytes\n", 463 CRYPTO_SESID2LID(cse->sid), 464 cse->uio.uio_iov[0].iov_base, iov_len)); 465 466 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 467 if (crp == NULL) { 468 error = ENOMEM; 469 goto bail; 470 } 471 DPRINTF(("cryptodev_op[%u]: crp %p\n", 472 CRYPTO_SESID2LID(cse->sid), crp)); 473 474 /* crds are always ordered tcomp, thash, then txform */ 475 /* with optional missing links */ 476 477 /* XXX: If we're going to compress then hash or encrypt, we need 478 * to be able to pass on the new size of the data. 479 */ 480 481 if (cse->tcomp) { 482 crdc = crp->crp_desc; 483 } 484 485 if (cse->thash) { 486 crda = crdc ? crdc->crd_next : crp->crp_desc; 487 if (cse->txform && crda) 488 crde = crda->crd_next; 489 } else { 490 if (cse->txform) { 491 crde = crdc ? crdc->crd_next : crp->crp_desc; 492 } else if (!cse->tcomp) { 493 error = EINVAL; 494 goto bail; 495 } 496 } 497 498 DPRINTF(("ocf[%u]: iov_len %zu, cop->len %u\n", 499 CRYPTO_SESID2LID(cse->sid), 500 cse->uio.uio_iov[0].iov_len, 501 cop->len)); 502 503 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 504 { 505 printf("copyin failed %s %d \n", (char *)cop->src, error); 506 goto bail; 507 } 508 509 if (crdc) { 510 switch (cop->op) { 511 case COP_COMP: 512 crdc->crd_flags |= CRD_F_COMP; 513 break; 514 case COP_DECOMP: 515 crdc->crd_flags &= ~CRD_F_COMP; 516 break; 517 default: 518 break; 519 } 520 /* more data to follow? */ 521 if (cop->flags & COP_F_MORE) { 522 flags |= CRYPTO_F_MORE; 523 } 524 crdc->crd_len = cop->len; 525 crdc->crd_inject = 0; 526 527 crdc->crd_alg = cse->comp_alg; 528 crdc->crd_key = NULL; 529 crdc->crd_klen = 0; 530 DPRINTF(("cryptodev_op[%u]: crdc setup for comp_alg %d.\n", 531 CRYPTO_SESID2LID(cse->sid), crdc->crd_alg)); 532 } 533 534 if (crda) { 535 crda->crd_skip = 0; 536 crda->crd_len = cop->len; 537 crda->crd_inject = 0; /* ??? */ 538 539 crda->crd_alg = cse->mac; 540 crda->crd_key = cse->mackey; 541 crda->crd_klen = cse->mackeylen * 8; 542 DPRINTF(("cryptodev_op: crda setup for mac %d.\n", crda->crd_alg)); 543 } 544 545 if (crde) { 546 switch (cop->op) { 547 case COP_ENCRYPT: 548 crde->crd_flags |= CRD_F_ENCRYPT; 549 break; 550 case COP_DECRYPT: 551 crde->crd_flags &= ~CRD_F_ENCRYPT; 552 break; 553 default: 554 break; 555 } 556 crde->crd_len = cop->len; 557 crde->crd_inject = 0; 558 559 crde->crd_alg = cse->cipher; 560 crde->crd_key = cse->key; 561 crde->crd_klen = cse->keylen * 8; 562 DPRINTF(("cryptodev_op: crde setup for cipher %d.\n", crde->crd_alg)); 563 } 564 565 566 crp->crp_ilen = cop->len; 567 /* The reqest is flagged as CRYPTO_F_USER as long as it is running 568 * in the user IOCTL thread. This flag lets us skip using the retq for 569 * the request if it completes immediately. If the request ends up being 570 * delayed or is not completed immediately the flag is removed. 571 */ 572 crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | CRYPTO_F_USER | 573 flags; 574 crp->crp_buf = (void *)&cse->uio; 575 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 576 crp->crp_sid = cse->sid; 577 crp->crp_opaque = (void *)cse; 578 579 if (cop->iv) { 580 if (crde == NULL) { 581 error = EINVAL; 582 goto bail; 583 } 584 if (cse->txform->ivsize == 0) { 585 error = EINVAL; 586 goto bail; 587 } 588 if ((error = copyin(cop->iv, cse->tmp_iv, 589 cse->txform->ivsize))) 590 goto bail; 591 (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); 592 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 593 crde->crd_skip = 0; 594 } else if (crde) { 595 if (cse->txform->ivsize == 0) { 596 crde->crd_skip = 0; 597 } else { 598 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 599 crde->crd_flags |= CRD_F_IV_PRESENT; 600 crde->crd_skip = cse->txform->ivsize; 601 crde->crd_len -= cse->txform->ivsize; 602 } 603 } 604 605 if (cop->mac) { 606 if (crda == NULL) { 607 error = EINVAL; 608 goto bail; 609 } 610 crp->crp_mac=cse->tmp_mac; 611 } 612 613 /* 614 * XXX there was a comment here which said that we went to 615 * XXX splcrypto() but needed to only if CRYPTO_F_CBIMM, 616 * XXX disabled on NetBSD since 1.6O due to a race condition. 617 * XXX But crypto_dispatch went to splcrypto() itself! (And 618 * XXX now takes the crypto_mtx mutex itself). We do, however, 619 * XXX need to hold the mutex across the call to cv_wait(). 620 * XXX (should we arrange for crypto_dispatch to return to 621 * XXX us with it held? it seems quite ugly to do so.) 622 */ 623 #ifdef notyet 624 eagain: 625 #endif 626 error = crypto_dispatch(crp); 627 mutex_enter(&crypto_mtx); 628 629 /* 630 * If the request was going to be completed by the 631 * ioctl thread then it would have been done by now. 632 * Remove the F_USER flag so crypto_done() is not confused 633 * if the crypto device calls it after this point. 634 */ 635 crp->crp_flags &= ~(CRYPTO_F_USER); 636 637 switch (error) { 638 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 639 case EAGAIN: 640 mutex_exit(&crypto_mtx); 641 goto eagain; 642 break; 643 #endif 644 case 0: 645 break; 646 default: 647 DPRINTF(("cryptodev_op: not waiting, error.\n")); 648 mutex_exit(&crypto_mtx); 649 goto bail; 650 } 651 652 while (!(crp->crp_flags & CRYPTO_F_DONE)) { 653 DPRINTF(("cryptodev_op[%d]: sleeping on cv %p for crp %p\n", 654 (uint32_t)cse->sid, &crp->crp_cv, crp)); 655 cv_wait(&crp->crp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 656 } 657 if (crp->crp_flags & CRYPTO_F_ONRETQ) { 658 /* XXX this should never happen now with the CRYPTO_F_USER flag 659 * changes. 660 */ 661 DPRINTF(("cryptodev_op: DONE, not woken by cryptoret.\n")); 662 (void)crypto_ret_q_remove(crp); 663 } 664 mutex_exit(&crypto_mtx); 665 666 if (crp->crp_etype != 0) { 667 DPRINTF(("cryptodev_op: crp_etype %d\n", crp->crp_etype)); 668 error = crp->crp_etype; 669 goto bail; 670 } 671 672 if (cse->error) { 673 DPRINTF(("cryptodev_op: cse->error %d\n", cse->error)); 674 error = cse->error; 675 goto bail; 676 } 677 678 dst_len = crp->crp_ilen; 679 /* let the user know how much data was returned */ 680 if (crp->crp_olen) { 681 if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { 682 error = ENOMEM; 683 goto bail; 684 } 685 dst_len = cop->dst_len = crp->crp_olen; 686 } 687 688 if (cop->dst) { 689 DPRINTF(("cryptodev_op: copyout %d bytes to %p\n", dst_len, cop->dst)); 690 } 691 if (cop->dst && 692 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 693 { 694 DPRINTF(("cryptodev_op: copyout error %d\n", error)); 695 goto bail; 696 } 697 698 if (cop->mac && 699 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 700 DPRINTF(("cryptodev_op: mac copyout error %d\n", error)); 701 goto bail; 702 } 703 704 705 bail: 706 if (crp) { 707 crypto_freereq(crp); 708 } 709 if (cse->uio.uio_iov[0].iov_base) { 710 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 711 } 712 713 return error; 714 } 715 716 static int 717 cryptodev_cb(void *op) 718 { 719 struct cryptop *crp = (struct cryptop *) op; 720 struct csession *cse = (struct csession *)crp->crp_opaque; 721 int error = 0; 722 723 mutex_enter(&crypto_mtx); 724 cse->error = crp->crp_etype; 725 if (crp->crp_etype == EAGAIN) { 726 /* always drop mutex to call dispatch routine */ 727 mutex_exit(&crypto_mtx); 728 error = crypto_dispatch(crp); 729 mutex_enter(&crypto_mtx); 730 } 731 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 732 cv_signal(&crp->crp_cv); 733 } 734 mutex_exit(&crypto_mtx); 735 return 0; 736 } 737 738 static int 739 cryptodev_mcb(void *op) 740 { 741 struct cryptop *crp = (struct cryptop *) op; 742 struct csession *cse = (struct csession *)crp->crp_opaque; 743 int error=0; 744 745 mutex_enter(&crypto_mtx); 746 cse->error = crp->crp_etype; 747 if (crp->crp_etype == EAGAIN) { 748 mutex_exit(&crypto_mtx); 749 error = crypto_dispatch(crp); 750 mutex_enter(&crypto_mtx); 751 } 752 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 753 cv_signal(&crp->crp_cv); 754 } 755 756 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 757 selnotify(&crp->fcrp->sinfo, 0, 0); 758 mutex_exit(&crypto_mtx); 759 return 0; 760 } 761 762 static int 763 cryptodevkey_cb(void *op) 764 { 765 struct cryptkop *krp = op; 766 767 mutex_enter(&crypto_mtx); 768 cv_signal(&krp->krp_cv); 769 mutex_exit(&crypto_mtx); 770 return 0; 771 } 772 773 static int 774 cryptodevkey_mcb(void *op) 775 { 776 struct cryptkop *krp = op; 777 778 mutex_enter(&crypto_mtx); 779 cv_signal(&krp->krp_cv); 780 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 781 selnotify(&krp->fcrp->sinfo, 0, 0); 782 mutex_exit(&crypto_mtx); 783 return 0; 784 } 785 786 static int 787 cryptodev_key(struct crypt_kop *kop) 788 { 789 struct cryptkop *krp = NULL; 790 int error = EINVAL; 791 int in, out, size, i; 792 793 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 794 return EFBIG; 795 796 in = kop->crk_iparams; 797 out = kop->crk_oparams; 798 switch (kop->crk_op) { 799 case CRK_MOD_EXP: 800 if (in == 3 && out == 1) 801 break; 802 return EINVAL; 803 case CRK_MOD_EXP_CRT: 804 if (in == 6 && out == 1) 805 break; 806 return EINVAL; 807 case CRK_DSA_SIGN: 808 if (in == 5 && out == 2) 809 break; 810 return EINVAL; 811 case CRK_DSA_VERIFY: 812 if (in == 7 && out == 0) 813 break; 814 return EINVAL; 815 case CRK_DH_COMPUTE_KEY: 816 if (in == 3 && out == 1) 817 break; 818 return EINVAL; 819 case CRK_MOD_ADD: 820 if (in == 3 && out == 1) 821 break; 822 return EINVAL; 823 case CRK_MOD_ADDINV: 824 if (in == 2 && out == 1) 825 break; 826 return EINVAL; 827 case CRK_MOD_SUB: 828 if (in == 3 && out == 1) 829 break; 830 return EINVAL; 831 case CRK_MOD_MULT: 832 if (in == 3 && out == 1) 833 break; 834 return EINVAL; 835 case CRK_MOD_MULTINV: 836 if (in == 2 && out == 1) 837 break; 838 return EINVAL; 839 case CRK_MOD: 840 if (in == 2 && out == 1) 841 break; 842 return EINVAL; 843 default: 844 return EINVAL; 845 } 846 847 krp = pool_get(&cryptkop_pool, PR_WAITOK); 848 (void)memset(krp, 0, sizeof *krp); 849 cv_init(&krp->krp_cv, "crykdev"); 850 krp->krp_op = kop->crk_op; 851 krp->krp_status = kop->crk_status; 852 krp->krp_iparams = kop->crk_iparams; 853 krp->krp_oparams = kop->crk_oparams; 854 krp->krp_status = 0; 855 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 856 857 for (i = 0; i < CRK_MAXPARAM; i++) 858 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 859 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 860 size = (krp->krp_param[i].crp_nbits + 7) / 8; 861 if (size == 0) 862 continue; 863 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 864 if (i >= krp->krp_iparams) 865 continue; 866 error = copyin(kop->crk_param[i].crp_p, 867 krp->krp_param[i].crp_p, size); 868 if (error) 869 goto fail; 870 } 871 872 error = crypto_kdispatch(krp); 873 if (error != 0) { 874 goto fail; 875 } 876 877 mutex_enter(&crypto_mtx); 878 while (!(krp->krp_flags & CRYPTO_F_DONE)) { 879 cv_wait(&krp->krp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 880 } 881 if (krp->krp_flags & CRYPTO_F_ONRETQ) { 882 DPRINTF(("cryptodev_key: DONE early, not via cryptoret.\n")); 883 (void)crypto_ret_kq_remove(krp); 884 } 885 mutex_exit(&crypto_mtx); 886 887 if (krp->krp_status != 0) { 888 DPRINTF(("cryptodev_key: krp->krp_status 0x%08x\n", 889 krp->krp_status)); 890 error = krp->krp_status; 891 goto fail; 892 } 893 894 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 895 i++) { 896 size = (krp->krp_param[i].crp_nbits + 7) / 8; 897 if (size == 0) 898 continue; 899 error = copyout(krp->krp_param[i].crp_p, 900 kop->crk_param[i].crp_p, size); 901 if (error) { 902 DPRINTF(("cryptodev_key: copyout oparam %d failed, " 903 "error=%d\n", i-krp->krp_iparams, error)); 904 goto fail; 905 } 906 } 907 908 fail: 909 kop->crk_status = krp->krp_status; 910 for (i = 0; i < CRK_MAXPARAM; i++) { 911 struct crparam *kp = &(krp->krp_param[i]); 912 if (krp->krp_param[i].crp_p) { 913 size = (kp->crp_nbits + 7) / 8; 914 KASSERT(size > 0); 915 (void)memset(kp->crp_p, 0, size); 916 kmem_free(kp->crp_p, size); 917 } 918 } 919 cv_destroy(&krp->krp_cv); 920 pool_put(&cryptkop_pool, krp); 921 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 922 return error; 923 } 924 925 /* ARGSUSED */ 926 static int 927 cryptof_close(struct file *fp) 928 { 929 struct fcrypt *fcr = fp->f_data; 930 struct csession *cse; 931 932 mutex_enter(&crypto_mtx); 933 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 934 TAILQ_REMOVE(&fcr->csessions, cse, next); 935 mutex_exit(&crypto_mtx); 936 (void)csefree(cse); 937 mutex_enter(&crypto_mtx); 938 } 939 seldestroy(&fcr->sinfo); 940 fp->f_data = NULL; 941 mutex_exit(&crypto_mtx); 942 943 pool_put(&fcrpl, fcr); 944 return 0; 945 } 946 947 /* needed for compatibility module */ 948 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 949 { 950 return csefind(fcr, ses); 951 } 952 953 /* csefind: call with crypto_mtx held. */ 954 static struct csession * 955 csefind(struct fcrypt *fcr, u_int ses) 956 { 957 struct csession *cse, *cnext, *ret = NULL; 958 959 KASSERT(mutex_owned(&crypto_mtx)); 960 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 961 if (cse->ses == ses) 962 ret = cse; 963 964 return ret; 965 } 966 967 /* csedelete: call with crypto_mtx held. */ 968 static int 969 csedelete(struct fcrypt *fcr, struct csession *cse_del) 970 { 971 struct csession *cse, *cnext; 972 int ret = 0; 973 974 KASSERT(mutex_owned(&crypto_mtx)); 975 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 976 if (cse == cse_del) { 977 TAILQ_REMOVE(&fcr->csessions, cse, next); 978 ret = 1; 979 } 980 } 981 return ret; 982 } 983 984 static struct csession * 985 cseadd(struct fcrypt *fcr, struct csession *cse) 986 { 987 mutex_enter(&crypto_mtx); 988 /* don't let session ID wrap! */ 989 if (fcr->sesn + 1 == 0) return NULL; 990 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 991 cse->ses = fcr->sesn++; 992 mutex_exit(&crypto_mtx); 993 return cse; 994 } 995 996 static struct csession * 997 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 998 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 999 u_int32_t comp_alg, const struct enc_xform *txform, 1000 const struct auth_hash *thash, const struct comp_algo *tcomp) 1001 { 1002 struct csession *cse; 1003 1004 cse = pool_get(&csepl, PR_NOWAIT); 1005 if (cse == NULL) 1006 return NULL; 1007 cse->key = key; 1008 cse->keylen = keylen/8; 1009 cse->mackey = mackey; 1010 cse->mackeylen = mackeylen/8; 1011 cse->sid = sid; 1012 cse->cipher = cipher; 1013 cse->mac = mac; 1014 cse->comp_alg = comp_alg; 1015 cse->txform = txform; 1016 cse->thash = thash; 1017 cse->tcomp = tcomp; 1018 cse->error = 0; 1019 if (cseadd(fcr, cse)) 1020 return cse; 1021 else { 1022 pool_put(&csepl, cse); 1023 return NULL; 1024 } 1025 } 1026 1027 /* csefree: call with crypto_mtx held. */ 1028 static int 1029 csefree(struct csession *cse) 1030 { 1031 int error; 1032 1033 error = crypto_freesession(cse->sid); 1034 if (cse->key) 1035 free(cse->key, M_XDATA); 1036 if (cse->mackey) 1037 free(cse->mackey, M_XDATA); 1038 pool_put(&csepl, cse); 1039 return error; 1040 } 1041 1042 static int 1043 cryptoopen(dev_t dev, int flag, int mode, 1044 struct lwp *l) 1045 { 1046 file_t *fp; 1047 struct fcrypt *fcr; 1048 int fd, error; 1049 1050 if (crypto_usercrypto == 0) 1051 return ENXIO; 1052 1053 if ((error = fd_allocfile(&fp, &fd)) != 0) 1054 return error; 1055 1056 fcr = pool_get(&fcrpl, PR_WAITOK); 1057 getnanotime(&fcr->btime); 1058 fcr->atime = fcr->mtime = fcr->btime; 1059 mutex_enter(&crypto_mtx); 1060 TAILQ_INIT(&fcr->csessions); 1061 TAILQ_INIT(&fcr->crp_ret_mq); 1062 TAILQ_INIT(&fcr->crp_ret_mkq); 1063 selinit(&fcr->sinfo); 1064 /* 1065 * Don't ever return session 0, to allow detection of 1066 * failed creation attempts with multi-create ioctl. 1067 */ 1068 fcr->sesn = 1; 1069 fcr->requestid = 1; 1070 mutex_exit(&crypto_mtx); 1071 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1072 } 1073 1074 static int 1075 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1076 { 1077 return EIO; 1078 } 1079 1080 static int 1081 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1082 { 1083 return EIO; 1084 } 1085 1086 int 1087 cryptoselect(dev_t dev, int rw, struct lwp *l) 1088 { 1089 return 0; 1090 } 1091 1092 /*static*/ 1093 struct cdevsw crypto_cdevsw = { 1094 /* open */ cryptoopen, 1095 /* close */ noclose, 1096 /* read */ cryptoread, 1097 /* write */ cryptowrite, 1098 /* ioctl */ noioctl, 1099 /* ttstop?*/ nostop, 1100 /* ??*/ notty, 1101 /* poll */ cryptoselect /*nopoll*/, 1102 /* mmap */ nommap, 1103 /* kqfilter */ nokqfilter, 1104 /* type */ D_OTHER, 1105 }; 1106 1107 int 1108 cryptodev_mop(struct fcrypt *fcr, 1109 struct crypt_n_op * cnop, 1110 int count, struct lwp *l) 1111 { 1112 struct cryptop *crp = NULL; 1113 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1114 int req, error=0; 1115 struct csession *cse; 1116 int flags=0; 1117 int iov_len; 1118 1119 for (req = 0; req < count; req++) { 1120 mutex_enter(&crypto_mtx); 1121 cse = csefind(fcr, cnop[req].ses); 1122 if (cse == NULL) { 1123 DPRINTF(("csefind failed\n")); 1124 cnop[req].status = EINVAL; 1125 mutex_exit(&crypto_mtx); 1126 continue; 1127 } 1128 mutex_exit(&crypto_mtx); 1129 1130 if (cnop[req].len > 256*1024-4) { 1131 DPRINTF(("length failed\n")); 1132 cnop[req].status = EINVAL; 1133 continue; 1134 } 1135 if (cse->txform) { 1136 if (cnop[req].len < cse->txform->blocksize - 1137 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1138 (cnop[req].len - 1139 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1140 % cse->txform->blocksize) { 1141 cnop[req].status = EINVAL; 1142 continue; 1143 } 1144 } 1145 1146 crp = crypto_getreq((cse->txform != NULL) + 1147 (cse->thash != NULL) + 1148 (cse->tcomp != NULL)); 1149 if (crp == NULL) { 1150 cnop[req].status = ENOMEM; 1151 goto bail; 1152 } 1153 1154 iov_len = cnop[req].len; 1155 /* got a compression/decompression max size? */ 1156 if ((cse->tcomp) && cnop[req].dst_len) { 1157 if (iov_len < cnop[req].dst_len) { 1158 /* Need larger iov to deal with decompress */ 1159 iov_len = cnop[req].dst_len; 1160 } 1161 DPRINTF(("cryptodev_mop: iov_len -> %d for decompress\n", iov_len)); 1162 } 1163 1164 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1165 crp->uio.uio_iovcnt = 1; 1166 crp->uio.uio_resid = 0; 1167 crp->uio.uio_rw = UIO_WRITE; 1168 crp->uio.uio_iov = crp->iovec; 1169 UIO_SETUP_SYSSPACE(&crp->uio); 1170 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1171 crp->uio.uio_iov[0].iov_len = iov_len; 1172 DPRINTF(("cryptodev_mop: kmem_alloc(%d) for iov \n", iov_len)); 1173 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1174 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1175 1176 if (cse->tcomp) { 1177 crdc = crp->crp_desc; 1178 } 1179 1180 if (cse->thash) { 1181 crda = crdc ? crdc->crd_next : crp->crp_desc; 1182 if (cse->txform && crda) 1183 crde = crda->crd_next; 1184 } else { 1185 if (cse->txform) { 1186 crde = crdc ? crdc->crd_next : crp->crp_desc; 1187 } else if (!cse->tcomp) { 1188 error = EINVAL; 1189 goto bail; 1190 } 1191 } 1192 1193 if ((copyin(cnop[req].src, 1194 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1195 cnop[req].status = EINVAL; 1196 goto bail; 1197 } 1198 1199 if (crdc) { 1200 switch (cnop[req].op) { 1201 case COP_COMP: 1202 crdc->crd_flags |= CRD_F_COMP; 1203 break; 1204 case COP_DECOMP: 1205 crdc->crd_flags &= ~CRD_F_COMP; 1206 break; 1207 default: 1208 break; 1209 } 1210 /* more data to follow? */ 1211 if (cnop[req].flags & COP_F_MORE) { 1212 flags |= CRYPTO_F_MORE; 1213 } 1214 crdc->crd_len = cnop[req].len; 1215 crdc->crd_inject = 0; 1216 1217 crdc->crd_alg = cse->comp_alg; 1218 crdc->crd_key = NULL; 1219 crdc->crd_klen = 0; 1220 DPRINTF(("cryptodev_mop[%d]: crdc setup for comp_alg %d" 1221 " len %d.\n", 1222 (uint32_t)cse->sid, crdc->crd_alg, 1223 crdc->crd_len)); 1224 } 1225 1226 if (crda) { 1227 crda->crd_skip = 0; 1228 crda->crd_len = cnop[req].len; 1229 crda->crd_inject = 0; /* ??? */ 1230 1231 crda->crd_alg = cse->mac; 1232 crda->crd_key = cse->mackey; 1233 crda->crd_klen = cse->mackeylen * 8; 1234 } 1235 1236 if (crde) { 1237 if (cnop[req].op == COP_ENCRYPT) 1238 crde->crd_flags |= CRD_F_ENCRYPT; 1239 else 1240 crde->crd_flags &= ~CRD_F_ENCRYPT; 1241 crde->crd_len = cnop[req].len; 1242 crde->crd_inject = 0; 1243 1244 crde->crd_alg = cse->cipher; 1245 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1246 if(cnop[req].key && cnop[req].keylen) { 1247 crde->crd_key = malloc(cnop[req].keylen, 1248 M_XDATA, M_WAITOK); 1249 if((error = copyin(cnop[req].key, 1250 crde->crd_key, cnop[req].keylen))) { 1251 cnop[req].status = EINVAL; 1252 goto bail; 1253 } 1254 crde->crd_klen = cnop[req].keylen * 8; 1255 } else { ... } 1256 #endif 1257 crde->crd_key = cse->key; 1258 crde->crd_klen = cse->keylen * 8; 1259 } 1260 1261 crp->crp_ilen = cnop[req].len; 1262 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | 1263 (cnop[req].flags & COP_F_BATCH) | flags; 1264 crp->crp_buf = (void *)&crp->uio; 1265 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_mcb; 1266 crp->crp_sid = cse->sid; 1267 crp->crp_opaque = (void *)cse; 1268 crp->fcrp = fcr; 1269 crp->dst = cnop[req].dst; 1270 crp->len = cnop[req].len; /* input len, iov may be larger */ 1271 crp->mac = cnop[req].mac; 1272 DPRINTF(("cryptodev_mop: iov_base %p dst %p len %d mac %p\n", 1273 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1274 crp->mac)); 1275 1276 if (cnop[req].iv) { 1277 if (crde == NULL) { 1278 cnop[req].status = EINVAL; 1279 goto bail; 1280 } 1281 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1282 cnop[req].status = EINVAL; 1283 goto bail; 1284 } 1285 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1286 cse->txform->ivsize))) { 1287 cnop[req].status = EINVAL; 1288 goto bail; 1289 } 1290 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1291 cse->txform->ivsize); 1292 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1293 crde->crd_skip = 0; 1294 } else if (crde) { 1295 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1296 crde->crd_skip = 0; 1297 } else { 1298 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1299 crde->crd_flags |= CRD_F_IV_PRESENT; 1300 crde->crd_skip = cse->txform->ivsize; 1301 crde->crd_len -= cse->txform->ivsize; 1302 } 1303 } 1304 1305 if (cnop[req].mac) { 1306 if (crda == NULL) { 1307 cnop[req].status = EINVAL; 1308 goto bail; 1309 } 1310 crp->crp_mac=cse->tmp_mac; 1311 } 1312 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1313 crp->crp_reqid = cnop[req].reqid; 1314 crp->crp_usropaque = cnop[req].opaque; 1315 #ifdef notyet 1316 eagain: 1317 #endif 1318 cnop[req].status = crypto_dispatch(crp); 1319 mutex_enter(&crypto_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(&crypto_mtx); 1325 goto eagain; 1326 break; 1327 #endif 1328 case 0: 1329 break; 1330 default: 1331 DPRINTF(("cryptodev_op: not waiting, error.\n")); 1332 mutex_exit(&crypto_mtx); 1333 goto bail; 1334 } 1335 1336 mutex_exit(&crypto_mtx); 1337 bail: 1338 if (cnop[req].status) { 1339 if (crp) { 1340 if (crp->uio.uio_iov[0].iov_base) { 1341 kmem_free(crp->uio.uio_iov[0].iov_base, 1342 crp->uio.uio_iov[0].iov_len); 1343 } 1344 crypto_freereq(crp); 1345 } 1346 error = 0; 1347 } 1348 } 1349 return error; 1350 } 1351 1352 static int 1353 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1354 { 1355 struct cryptkop *krp = NULL; 1356 int error = EINVAL; 1357 int in, out, size, i, req; 1358 1359 for (req = 0; req < count; req++) { 1360 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1361 return EFBIG; 1362 1363 in = kop[req].crk_iparams; 1364 out = kop[req].crk_oparams; 1365 switch (kop[req].crk_op) { 1366 case CRK_MOD_EXP: 1367 if (in == 3 && out == 1) 1368 break; 1369 kop[req].crk_status = EINVAL; 1370 continue; 1371 case CRK_MOD_EXP_CRT: 1372 if (in == 6 && out == 1) 1373 break; 1374 kop[req].crk_status = EINVAL; 1375 continue; 1376 case CRK_DSA_SIGN: 1377 if (in == 5 && out == 2) 1378 break; 1379 kop[req].crk_status = EINVAL; 1380 continue; 1381 case CRK_DSA_VERIFY: 1382 if (in == 7 && out == 0) 1383 break; 1384 kop[req].crk_status = EINVAL; 1385 continue; 1386 case CRK_DH_COMPUTE_KEY: 1387 if (in == 3 && out == 1) 1388 break; 1389 kop[req].crk_status = EINVAL; 1390 continue; 1391 case CRK_MOD_ADD: 1392 if (in == 3 && out == 1) 1393 break; 1394 kop[req].crk_status = EINVAL; 1395 continue; 1396 case CRK_MOD_ADDINV: 1397 if (in == 2 && out == 1) 1398 break; 1399 kop[req].crk_status = EINVAL; 1400 continue; 1401 case CRK_MOD_SUB: 1402 if (in == 3 && out == 1) 1403 break; 1404 kop[req].crk_status = EINVAL; 1405 continue; 1406 case CRK_MOD_MULT: 1407 if (in == 3 && out == 1) 1408 break; 1409 kop[req].crk_status = EINVAL; 1410 continue; 1411 case CRK_MOD_MULTINV: 1412 if (in == 2 && out == 1) 1413 break; 1414 kop[req].crk_status = EINVAL; 1415 continue; 1416 case CRK_MOD: 1417 if (in == 2 && out == 1) 1418 break; 1419 kop[req].crk_status = EINVAL; 1420 continue; 1421 default: 1422 kop[req].crk_status = EINVAL; 1423 continue; 1424 } 1425 1426 krp = pool_get(&cryptkop_pool, PR_WAITOK); 1427 (void)memset(krp, 0, sizeof *krp); 1428 cv_init(&krp->krp_cv, "crykdev"); 1429 krp->krp_op = kop[req].crk_op; 1430 krp->krp_status = kop[req].crk_status; 1431 krp->krp_iparams = kop[req].crk_iparams; 1432 krp->krp_oparams = kop[req].crk_oparams; 1433 krp->krp_status = 0; 1434 krp->krp_callback = 1435 (int (*) (struct cryptkop *)) cryptodevkey_mcb; 1436 (void)memcpy(krp->crk_param, kop[req].crk_param, 1437 sizeof(kop[req].crk_param)); 1438 1439 krp->krp_flags = CRYPTO_F_CBIMM; 1440 1441 for (i = 0; i < CRK_MAXPARAM; i++) 1442 krp->krp_param[i].crp_nbits = 1443 kop[req].crk_param[i].crp_nbits; 1444 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1445 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1446 if (size == 0) 1447 continue; 1448 krp->krp_param[i].crp_p = 1449 kmem_alloc(size, KM_SLEEP); 1450 if (i >= krp->krp_iparams) 1451 continue; 1452 kop[req].crk_status = 1453 copyin(kop[req].crk_param[i].crp_p, 1454 krp->krp_param[i].crp_p, size); 1455 if (kop[req].crk_status) 1456 goto fail; 1457 } 1458 krp->fcrp = fcr; 1459 1460 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1461 krp->krp_reqid = kop[req].crk_reqid; 1462 krp->krp_usropaque = kop[req].crk_opaque; 1463 1464 kop[req].crk_status = crypto_kdispatch(krp); 1465 if (kop[req].crk_status != 0) { 1466 goto fail; 1467 } 1468 1469 fail: 1470 if(kop[req].crk_status) { 1471 if (krp) { 1472 kop[req].crk_status = krp->krp_status; 1473 for (i = 0; i < CRK_MAXPARAM; i++) { 1474 struct crparam *kp = 1475 &(krp->krp_param[i]); 1476 if (kp->crp_p) { 1477 size = (kp->crp_nbits + 7) / 8; 1478 KASSERT(size > 0); 1479 memset(kp->crp_p, 0, size); 1480 kmem_free(kp->crp_p, size); 1481 } 1482 } 1483 cv_destroy(&krp->krp_cv); 1484 pool_put(&cryptkop_pool, krp); 1485 } 1486 } 1487 error = 0; 1488 } 1489 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 1490 return error; 1491 } 1492 1493 int 1494 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1495 { 1496 struct cryptoini cria, crie; 1497 struct cryptoini cric; /* compressor */ 1498 struct cryptoini *crihead = NULL; 1499 const struct enc_xform *txform = NULL; 1500 const struct auth_hash *thash = NULL; 1501 const struct comp_algo *tcomp = NULL; 1502 struct csession *cse; 1503 u_int64_t sid; 1504 int error = 0; 1505 1506 DPRINTF(("cryptodev_session() cipher=%d, mac=%d\n", sop->cipher, sop->mac)); 1507 1508 /* XXX there must be a way to not embed the list of xforms here */ 1509 switch (sop->cipher) { 1510 case 0: 1511 break; 1512 case CRYPTO_DES_CBC: 1513 txform = &enc_xform_des; 1514 break; 1515 case CRYPTO_3DES_CBC: 1516 txform = &enc_xform_3des; 1517 break; 1518 case CRYPTO_BLF_CBC: 1519 txform = &enc_xform_blf; 1520 break; 1521 case CRYPTO_CAST_CBC: 1522 txform = &enc_xform_cast5; 1523 break; 1524 case CRYPTO_SKIPJACK_CBC: 1525 txform = &enc_xform_skipjack; 1526 break; 1527 case CRYPTO_AES_CBC: 1528 txform = &enc_xform_rijndael128; 1529 break; 1530 case CRYPTO_CAMELLIA_CBC: 1531 txform = &enc_xform_camellia; 1532 break; 1533 case CRYPTO_AES_CTR: 1534 txform = &enc_xform_aes_ctr; 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(("cryptodev_session() 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_RIPEMD160_HMAC: 1591 thash = &auth_hash_hmac_ripemd_160; 1592 break; 1593 case CRYPTO_RIPEMD160_HMAC_96: 1594 thash = &auth_hash_hmac_ripemd_160_96; 1595 break; 1596 case CRYPTO_MD5: 1597 thash = &auth_hash_md5; 1598 break; 1599 case CRYPTO_SHA1: 1600 thash = &auth_hash_sha1; 1601 break; 1602 case CRYPTO_AES_XCBC_MAC_96: 1603 thash = &auth_hash_aes_xcbc_mac_96; 1604 break; 1605 case CRYPTO_NULL_HMAC: 1606 thash = &auth_hash_null; 1607 break; 1608 default: 1609 DPRINTF(("Invalid mac %d\n", sop->mac)); 1610 return EINVAL; 1611 } 1612 1613 memset(&crie, 0, sizeof(crie)); 1614 memset(&cria, 0, sizeof(cria)); 1615 memset(&cric, 0, sizeof(cric)); 1616 1617 if (tcomp) { 1618 cric.cri_alg = tcomp->type; 1619 cric.cri_klen = 0; 1620 DPRINTF(("tcomp->type = %d\n", tcomp->type)); 1621 1622 crihead = &cric; 1623 if (txform) { 1624 cric.cri_next = &crie; 1625 } else if (thash) { 1626 cric.cri_next = &cria; 1627 } 1628 } 1629 1630 if (txform) { 1631 crie.cri_alg = txform->type; 1632 crie.cri_klen = sop->keylen * 8; 1633 if (sop->keylen > txform->maxkey || 1634 sop->keylen < txform->minkey) { 1635 DPRINTF(("keylen %d not in [%d,%d]\n", 1636 sop->keylen, txform->minkey, txform->maxkey)); 1637 error = EINVAL; 1638 goto bail; 1639 } 1640 1641 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1642 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1643 goto bail; 1644 if (!crihead) { 1645 crihead = &crie; 1646 } 1647 if (thash) 1648 crie.cri_next = &cria; 1649 } 1650 1651 if (thash) { 1652 cria.cri_alg = thash->type; 1653 cria.cri_klen = sop->mackeylen * 8; 1654 if (sop->mackeylen != thash->keysize) { 1655 DPRINTF(("mackeylen %d != keysize %d\n", 1656 sop->mackeylen, thash->keysize)); 1657 error = EINVAL; 1658 goto bail; 1659 } 1660 if (cria.cri_klen) { 1661 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1662 M_WAITOK); 1663 if ((error = copyin(sop->mackey, cria.cri_key, 1664 cria.cri_klen / 8))) { 1665 goto bail; 1666 } 1667 } 1668 if (!crihead) { 1669 crihead = &cria; 1670 } 1671 } 1672 1673 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1674 if (!error) { 1675 DPRINTF(("cyrptodev_session: got session %d\n", (uint32_t)sid)); 1676 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1677 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1678 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1679 if (cse != NULL) { 1680 sop->ses = cse->ses; 1681 } else { 1682 DPRINTF(("csecreate failed\n")); 1683 crypto_freesession(sid); 1684 error = EINVAL; 1685 } 1686 } else { 1687 DPRINTF(("SIOCSESSION violates kernel parameters %d\n", 1688 error)); 1689 } 1690 bail: 1691 if (error) { 1692 if (crie.cri_key) { 1693 memset(crie.cri_key, 0, crie.cri_klen / 8); 1694 free(crie.cri_key, M_XDATA); 1695 } 1696 if (cria.cri_key) { 1697 memset(cria.cri_key, 0, cria.cri_klen / 8); 1698 free(cria.cri_key, M_XDATA); 1699 } 1700 } 1701 return error; 1702 } 1703 1704 int 1705 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1706 int count) 1707 { 1708 int i; 1709 1710 for (i = 0; i < count; i++, sn_ops++) { 1711 struct session_op s_op; 1712 s_op.cipher = sn_ops->cipher; 1713 s_op.mac = sn_ops->mac; 1714 s_op.keylen = sn_ops->keylen; 1715 s_op.key = sn_ops->key; 1716 s_op.mackeylen = sn_ops->mackeylen; 1717 s_op.mackey = sn_ops->mackey; 1718 1719 sn_ops->status = cryptodev_session(fcr, &s_op); 1720 sn_ops->ses = s_op.ses; 1721 } 1722 1723 return 0; 1724 } 1725 1726 static int 1727 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1728 { 1729 struct csession *cse; 1730 int req, error = 0; 1731 1732 mutex_enter(&crypto_mtx); 1733 for(req = 0; req < count; req++) { 1734 cse = csefind(fcr, sesid[req]); 1735 if (cse == NULL) 1736 continue; 1737 csedelete(fcr, cse); 1738 mutex_exit(&crypto_mtx); 1739 error = csefree(cse); 1740 mutex_enter(&crypto_mtx); 1741 } 1742 mutex_exit(&crypto_mtx); 1743 return 0; 1744 } 1745 1746 /* 1747 * collect as many completed requests as are availble, or count completed 1748 * requests whichever is less. 1749 * return the number of requests. 1750 */ 1751 static int 1752 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1753 int count) 1754 { 1755 struct cryptop *crp = NULL; 1756 struct cryptkop *krp = NULL; 1757 struct csession *cse; 1758 int i, size, req = 0; 1759 int completed=0; 1760 1761 /* On queue so nobody else can grab them 1762 * and copyout can be delayed-- no locking */ 1763 TAILQ_HEAD(, cryptop) crp_delfree_q = 1764 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1765 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1766 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1767 1768 /* at this point we do not know which response user is requesting for 1769 * (symmetric or asymmetric) so we copyout one from each i.e if the 1770 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1771 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1772 1773 /* pull off a list of requests while protected from changes */ 1774 mutex_enter(&crypto_mtx); 1775 while (req < count) { 1776 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1777 if (crp) { 1778 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1779 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1780 cse = (struct csession *)crp->crp_opaque; 1781 1782 /* see if the session is still valid */ 1783 cse = csefind(fcr, cse->ses); 1784 if (cse != NULL) { 1785 crypt_res[req].status = 0; 1786 } else { 1787 DPRINTF(("csefind failed\n")); 1788 crypt_res[req].status = EINVAL; 1789 } 1790 req++; 1791 } 1792 if(req < count) { 1793 crypt_res[req].status = 0; 1794 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1795 if (krp) { 1796 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1797 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1798 req++; 1799 } 1800 } 1801 } 1802 mutex_exit(&crypto_mtx); 1803 1804 /* now do all the work outside the mutex */ 1805 for(req=0; req < count ;) { 1806 crp = TAILQ_FIRST(&crp_delfree_q); 1807 if (crp) { 1808 if (crypt_res[req].status != 0) { 1809 /* csefind failed during collection */ 1810 goto bail; 1811 } 1812 cse = (struct csession *)crp->crp_opaque; 1813 crypt_res[req].reqid = crp->crp_reqid; 1814 crypt_res[req].opaque = crp->crp_usropaque; 1815 completed++; 1816 1817 if (crp->crp_etype != 0) { 1818 crypt_res[req].status = crp->crp_etype; 1819 goto bail; 1820 } 1821 1822 if (cse->error) { 1823 crypt_res[req].status = cse->error; 1824 goto bail; 1825 } 1826 1827 if (crp->dst && (crypt_res[req].status = 1828 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1829 crp->len))) 1830 goto bail; 1831 1832 if (crp->mac && (crypt_res[req].status = 1833 copyout(crp->crp_mac, crp->mac, 1834 cse->thash->authsize))) 1835 goto bail; 1836 1837 bail: 1838 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1839 kmem_free(crp->uio.uio_iov[0].iov_base, 1840 crp->uio.uio_iov[0].iov_len); 1841 crypto_freereq(crp); 1842 req++; 1843 } 1844 1845 if (req < count) { 1846 krp = TAILQ_FIRST(&krp_delfree_q); 1847 if (krp) { 1848 crypt_res[req].reqid = krp->krp_reqid; 1849 crypt_res[req].opaque = krp->krp_usropaque; 1850 completed++; 1851 if (krp->krp_status != 0) { 1852 DPRINTF(("cryptodev_key: " 1853 "krp->krp_status 0x%08x\n", 1854 krp->krp_status)); 1855 crypt_res[req].status = krp->krp_status; 1856 goto fail; 1857 } 1858 1859 for (i = krp->krp_iparams; i < krp->krp_iparams 1860 + krp->krp_oparams; i++) { 1861 size = (krp->krp_param[i].crp_nbits 1862 + 7) / 8; 1863 if (size == 0) 1864 continue; 1865 crypt_res[req].status = copyout 1866 (krp->krp_param[i].crp_p, 1867 krp->crk_param[i].crp_p, size); 1868 if (crypt_res[req].status) { 1869 DPRINTF(("cryptodev_key: " 1870 "copyout oparam %d failed, " 1871 "error=%d\n", 1872 i - krp->krp_iparams, 1873 crypt_res[req].status)); 1874 goto fail; 1875 } 1876 } 1877 fail: 1878 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1879 /* not sure what to do for this */ 1880 /* kop[req].crk_status = krp->krp_status; */ 1881 for (i = 0; i < CRK_MAXPARAM; i++) { 1882 struct crparam *kp = &(krp->krp_param[i]); 1883 if (kp->crp_p) { 1884 size = (kp->crp_nbits + 7) / 8; 1885 KASSERT(size > 0); 1886 (void)memset(kp->crp_p, 0, size); 1887 kmem_free(kp->crp_p, size); 1888 } 1889 } 1890 cv_destroy(&krp->krp_cv); 1891 pool_put(&cryptkop_pool, krp); 1892 req++; 1893 } 1894 } 1895 } 1896 1897 return completed; 1898 } 1899 1900 static int 1901 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1902 { 1903 struct cryptop *crp = NULL, *cnext; 1904 struct cryptkop *krp = NULL, *knext; 1905 struct csession *cse; 1906 int i, size, req = 0; 1907 1908 mutex_enter(&crypto_mtx); 1909 /* Here we dont know for which request the user is requesting the 1910 * response so checking in both the queues */ 1911 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1912 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1913 cse = (struct csession *)crp->crp_opaque; 1914 crypt_res->opaque = crp->crp_usropaque; 1915 cse = csefind(fcr, cse->ses); 1916 if (cse == NULL) { 1917 DPRINTF(("csefind failed\n")); 1918 crypt_res->status = EINVAL; 1919 goto bail; 1920 } 1921 1922 if (crp->crp_etype != 0) { 1923 crypt_res->status = crp->crp_etype; 1924 goto bail; 1925 } 1926 1927 if (cse->error) { 1928 crypt_res->status = cse->error; 1929 goto bail; 1930 } 1931 1932 if (crp->dst && (crypt_res->status = 1933 copyout(crp->uio.uio_iov[0].iov_base, 1934 crp->dst, crp->len))) 1935 goto bail; 1936 1937 if (crp->mac && (crypt_res->status = 1938 copyout(crp->crp_mac, crp->mac, 1939 cse->thash->authsize))) 1940 goto bail; 1941 bail: 1942 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1943 1944 mutex_exit(&crypto_mtx); 1945 crypto_freereq(crp); 1946 return 0; 1947 } 1948 } 1949 1950 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1951 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1952 crypt_res[req].opaque = krp->krp_usropaque; 1953 if (krp->krp_status != 0) { 1954 DPRINTF(("cryptodev_key: " 1955 "krp->krp_status 0x%08x\n", 1956 krp->krp_status)); 1957 crypt_res[req].status = krp->krp_status; 1958 goto fail; 1959 } 1960 1961 for (i = krp->krp_iparams; i < krp->krp_iparams + 1962 krp->krp_oparams; i++) { 1963 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1964 if (size == 0) 1965 continue; 1966 crypt_res[req].status = copyout( 1967 krp->krp_param[i].crp_p, 1968 krp->crk_param[i].crp_p, size); 1969 if (crypt_res[req].status) { 1970 DPRINTF(("cryptodev_key: copyout oparam" 1971 "%d failed, error=%d\n", 1972 i - krp->krp_iparams, 1973 crypt_res[req].status)); 1974 goto fail; 1975 } 1976 } 1977 fail: 1978 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1979 mutex_exit(&crypto_mtx); 1980 /* not sure what to do for this */ 1981 /* kop[req].crk_status = krp->krp_status; */ 1982 for (i = 0; i < CRK_MAXPARAM; i++) { 1983 struct crparam *kp = &(krp->krp_param[i]); 1984 if (kp->crp_p) { 1985 size = (kp->crp_nbits + 7) / 8; 1986 KASSERT(size > 0); 1987 memset(kp->crp_p, 0, size); 1988 kmem_free(kp->crp_p, size); 1989 } 1990 } 1991 cv_destroy(&krp->krp_cv); 1992 pool_put(&cryptkop_pool, krp); 1993 return 0; 1994 } 1995 } 1996 mutex_exit(&crypto_mtx); 1997 return EINPROGRESS; 1998 } 1999 2000 static int 2001 cryptof_stat(struct file *fp, struct stat *st) 2002 { 2003 struct fcrypt *fcr = fp->f_data; 2004 2005 (void)memset(st, 0, sizeof(st)); 2006 2007 mutex_enter(&crypto_mtx); 2008 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2009 st->st_atimespec = fcr->atime; 2010 st->st_mtimespec = fcr->mtime; 2011 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2012 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2013 st->st_gid = kauth_cred_getegid(fp->f_cred); 2014 mutex_exit(&crypto_mtx); 2015 2016 return 0; 2017 } 2018 2019 static int 2020 cryptof_poll(struct file *fp, int events) 2021 { 2022 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 2023 int revents = 0; 2024 2025 if (!(events & (POLLIN | POLLRDNORM))) { 2026 /* only support read and POLLIN */ 2027 return 0; 2028 } 2029 2030 mutex_enter(&crypto_mtx); 2031 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2032 /* no completed requests pending, save the poll for later */ 2033 selrecord(curlwp, &fcr->sinfo); 2034 } else { 2035 /* let the app(s) know that there are completed requests */ 2036 revents = events & (POLLIN | POLLRDNORM); 2037 } 2038 mutex_exit(&crypto_mtx); 2039 2040 return revents; 2041 } 2042 2043 /* 2044 * Pseudo-device initialization routine for /dev/crypto 2045 */ 2046 void cryptoattach(int); 2047 2048 void 2049 cryptoattach(int num) 2050 { 2051 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2052 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2053 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2054 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2055 2056 /* 2057 * Preallocate space for 64 users, with 5 sessions each. 2058 * (consider that a TLS protocol session requires at least 2059 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2060 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2061 * consuming one session here for each algorithm. 2062 */ 2063 pool_prime(&fcrpl, 64); 2064 pool_prime(&csepl, 64 * 5); 2065 } 2066
Indexes created Mon Sep 22 21:09:42 GMT 2025