cryptodev.c revision 1.60
1 /* $NetBSD: cryptodev.c,v 1.60 2011/05/23 13:53:59 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 1.60 2011/05/23 13:53:59 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 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 460 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 461 DPRINTF(("cryptodev_op[%u]: uio.iov_base %p malloced %d bytes\n", 462 CRYPTO_SESID2LID(cse->sid), 463 cse->uio.uio_iov[0].iov_base, iov_len)); 464 465 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 466 if (crp == NULL) { 467 error = ENOMEM; 468 goto bail; 469 } 470 DPRINTF(("cryptodev_op[%u]: crp %p\n", 471 CRYPTO_SESID2LID(cse->sid), crp)); 472 473 /* crds are always ordered tcomp, thash, then txform */ 474 /* with optional missing links */ 475 476 /* XXX: If we're going to compress then hash or encrypt, we need 477 * to be able to pass on the new size of the data. 478 */ 479 480 if (cse->tcomp) { 481 crdc = crp->crp_desc; 482 } 483 484 if (cse->thash) { 485 crda = crdc ? crdc->crd_next : crp->crp_desc; 486 if (cse->txform && crda) 487 crde = crda->crd_next; 488 } else { 489 if (cse->txform) { 490 crde = crdc ? crdc->crd_next : crp->crp_desc; 491 } else if (!cse->tcomp) { 492 error = EINVAL; 493 goto bail; 494 } 495 } 496 497 DPRINTF(("ocf[%u]: iov_len %zu, cop->len %u\n", 498 CRYPTO_SESID2LID(cse->sid), 499 cse->uio.uio_iov[0].iov_len, 500 cop->len)); 501 502 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 503 { 504 printf("copyin failed %s %d \n", (char *)cop->src, error); 505 goto bail; 506 } 507 508 if (crdc) { 509 switch (cop->op) { 510 case COP_COMP: 511 crdc->crd_flags |= CRD_F_COMP; 512 break; 513 case COP_DECOMP: 514 crdc->crd_flags &= ~CRD_F_COMP; 515 break; 516 default: 517 break; 518 } 519 /* more data to follow? */ 520 if (cop->flags & COP_F_MORE) { 521 flags |= CRYPTO_F_MORE; 522 } 523 crdc->crd_len = cop->len; 524 crdc->crd_inject = 0; 525 526 crdc->crd_alg = cse->comp_alg; 527 crdc->crd_key = NULL; 528 crdc->crd_klen = 0; 529 DPRINTF(("cryptodev_op[%u]: crdc setup for comp_alg %d.\n", 530 CRYPTO_SESID2LID(cse->sid), crdc->crd_alg)); 531 } 532 533 if (crda) { 534 crda->crd_skip = 0; 535 crda->crd_len = cop->len; 536 crda->crd_inject = 0; /* ??? */ 537 538 crda->crd_alg = cse->mac; 539 crda->crd_key = cse->mackey; 540 crda->crd_klen = cse->mackeylen * 8; 541 DPRINTF(("cryptodev_op: crda setup for mac %d.\n", crda->crd_alg)); 542 } 543 544 if (crde) { 545 switch (cop->op) { 546 case COP_ENCRYPT: 547 crde->crd_flags |= CRD_F_ENCRYPT; 548 break; 549 case COP_DECRYPT: 550 crde->crd_flags &= ~CRD_F_ENCRYPT; 551 break; 552 default: 553 break; 554 } 555 crde->crd_len = cop->len; 556 crde->crd_inject = 0; 557 558 crde->crd_alg = cse->cipher; 559 crde->crd_key = cse->key; 560 crde->crd_klen = cse->keylen * 8; 561 DPRINTF(("cryptodev_op: crde setup for cipher %d.\n", crde->crd_alg)); 562 } 563 564 565 crp->crp_ilen = cop->len; 566 /* The reqest is flagged as CRYPTO_F_USER as long as it is running 567 * in the user IOCTL thread. This flag lets us skip using the retq for 568 * the request if it completes immediately. If the request ends up being 569 * delayed or is not completed immediately the flag is removed. 570 */ 571 crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | CRYPTO_F_USER | 572 flags; 573 crp->crp_buf = (void *)&cse->uio; 574 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 575 crp->crp_sid = cse->sid; 576 crp->crp_opaque = (void *)cse; 577 578 if (cop->iv) { 579 if (crde == NULL) { 580 error = EINVAL; 581 goto bail; 582 } 583 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 584 error = EINVAL; 585 goto bail; 586 } 587 if ((error = copyin(cop->iv, cse->tmp_iv, 588 cse->txform->ivsize))) 589 goto bail; 590 (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); 591 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 592 crde->crd_skip = 0; 593 } else if (crde) { 594 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 595 crde->crd_skip = 0; 596 } else { 597 crde->crd_flags |= CRD_F_IV_PRESENT; 598 crde->crd_skip = cse->txform->ivsize; 599 crde->crd_len -= cse->txform->ivsize; 600 } 601 } 602 603 if (cop->mac) { 604 if (crda == NULL) { 605 error = EINVAL; 606 goto bail; 607 } 608 crp->crp_mac=cse->tmp_mac; 609 } 610 611 /* 612 * XXX there was a comment here which said that we went to 613 * XXX splcrypto() but needed to only if CRYPTO_F_CBIMM, 614 * XXX disabled on NetBSD since 1.6O due to a race condition. 615 * XXX But crypto_dispatch went to splcrypto() itself! (And 616 * XXX now takes the crypto_mtx mutex itself). We do, however, 617 * XXX need to hold the mutex across the call to cv_wait(). 618 * XXX (should we arrange for crypto_dispatch to return to 619 * XXX us with it held? it seems quite ugly to do so.) 620 */ 621 #ifdef notyet 622 eagain: 623 #endif 624 error = crypto_dispatch(crp); 625 mutex_enter(&crypto_mtx); 626 627 /* 628 * If the request was going to be completed by the 629 * ioctl thread then it would have been done by now. 630 * Remove the F_USER flag so crypto_done() is not confused 631 * if the crypto device calls it after this point. 632 */ 633 crp->crp_flags &= ~(CRYPTO_F_USER); 634 635 switch (error) { 636 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 637 case EAGAIN: 638 mutex_exit(&crypto_mtx); 639 goto eagain; 640 break; 641 #endif 642 case 0: 643 break; 644 default: 645 DPRINTF(("cryptodev_op: not waiting, error.\n")); 646 mutex_exit(&crypto_mtx); 647 goto bail; 648 } 649 650 while (!(crp->crp_flags & CRYPTO_F_DONE)) { 651 DPRINTF(("cryptodev_op[%d]: sleeping on cv %p for crp %p\n", 652 (uint32_t)cse->sid, &crp->crp_cv, crp)); 653 cv_wait(&crp->crp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 654 } 655 if (crp->crp_flags & CRYPTO_F_ONRETQ) { 656 /* XXX this should never happen now with the CRYPTO_F_USER flag 657 * changes. 658 */ 659 DPRINTF(("cryptodev_op: DONE, not woken by cryptoret.\n")); 660 (void)crypto_ret_q_remove(crp); 661 } 662 mutex_exit(&crypto_mtx); 663 664 if (crp->crp_etype != 0) { 665 DPRINTF(("cryptodev_op: crp_etype %d\n", crp->crp_etype)); 666 error = crp->crp_etype; 667 goto bail; 668 } 669 670 if (cse->error) { 671 DPRINTF(("cryptodev_op: 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 dst_len = cop->dst_len = crp->crp_olen; 680 } 681 crp->len = dst_len; 682 683 if (cop->dst) { 684 DPRINTF(("cryptodev_op: copyout %d bytes to %p\n", dst_len, cop->dst)); 685 } 686 if (cop->dst && 687 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 688 { 689 DPRINTF(("cryptodev_op: copyout error %d\n", error)); 690 goto bail; 691 } 692 693 if (cop->mac && 694 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 695 DPRINTF(("cryptodev_op: mac copyout error %d\n", error)); 696 goto bail; 697 } 698 699 700 bail: 701 if (crp) { 702 crypto_freereq(crp); 703 } 704 if (cse->uio.uio_iov[0].iov_base) { 705 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 706 } 707 708 return error; 709 } 710 711 static int 712 cryptodev_cb(void *op) 713 { 714 struct cryptop *crp = (struct cryptop *) op; 715 struct csession *cse = (struct csession *)crp->crp_opaque; 716 int error = 0; 717 718 mutex_enter(&crypto_mtx); 719 cse->error = crp->crp_etype; 720 if (crp->crp_etype == EAGAIN) { 721 /* always drop mutex to call dispatch routine */ 722 mutex_exit(&crypto_mtx); 723 error = crypto_dispatch(crp); 724 mutex_enter(&crypto_mtx); 725 } 726 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 727 cv_signal(&crp->crp_cv); 728 } 729 mutex_exit(&crypto_mtx); 730 return 0; 731 } 732 733 static int 734 cryptodev_mcb(void *op) 735 { 736 struct cryptop *crp = (struct cryptop *) op; 737 struct csession *cse = (struct csession *)crp->crp_opaque; 738 int error=0; 739 740 mutex_enter(&crypto_mtx); 741 cse->error = crp->crp_etype; 742 if (crp->crp_etype == EAGAIN) { 743 mutex_exit(&crypto_mtx); 744 error = crypto_dispatch(crp); 745 mutex_enter(&crypto_mtx); 746 } 747 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 748 cv_signal(&crp->crp_cv); 749 } 750 751 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 752 selnotify(&crp->fcrp->sinfo, 0, 0); 753 mutex_exit(&crypto_mtx); 754 return 0; 755 } 756 757 static int 758 cryptodevkey_cb(void *op) 759 { 760 struct cryptkop *krp = op; 761 762 mutex_enter(&crypto_mtx); 763 cv_signal(&krp->krp_cv); 764 mutex_exit(&crypto_mtx); 765 return 0; 766 } 767 768 static int 769 cryptodevkey_mcb(void *op) 770 { 771 struct cryptkop *krp = op; 772 773 mutex_enter(&crypto_mtx); 774 cv_signal(&krp->krp_cv); 775 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 776 selnotify(&krp->fcrp->sinfo, 0, 0); 777 mutex_exit(&crypto_mtx); 778 return 0; 779 } 780 781 static int 782 cryptodev_key(struct crypt_kop *kop) 783 { 784 struct cryptkop *krp = NULL; 785 int error = EINVAL; 786 int in, out, size, i; 787 788 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 789 return EFBIG; 790 791 in = kop->crk_iparams; 792 out = kop->crk_oparams; 793 switch (kop->crk_op) { 794 case CRK_MOD_EXP: 795 if (in == 3 && out == 1) 796 break; 797 return EINVAL; 798 case CRK_MOD_EXP_CRT: 799 if (in == 6 && out == 1) 800 break; 801 return EINVAL; 802 case CRK_DSA_SIGN: 803 if (in == 5 && out == 2) 804 break; 805 return EINVAL; 806 case CRK_DSA_VERIFY: 807 if (in == 7 && out == 0) 808 break; 809 return EINVAL; 810 case CRK_DH_COMPUTE_KEY: 811 if (in == 3 && out == 1) 812 break; 813 return EINVAL; 814 case CRK_MOD_ADD: 815 if (in == 3 && out == 1) 816 break; 817 return EINVAL; 818 case CRK_MOD_ADDINV: 819 if (in == 2 && out == 1) 820 break; 821 return EINVAL; 822 case CRK_MOD_SUB: 823 if (in == 3 && out == 1) 824 break; 825 return EINVAL; 826 case CRK_MOD_MULT: 827 if (in == 3 && out == 1) 828 break; 829 return EINVAL; 830 case CRK_MOD_MULTINV: 831 if (in == 2 && out == 1) 832 break; 833 return EINVAL; 834 case CRK_MOD: 835 if (in == 2 && out == 1) 836 break; 837 return EINVAL; 838 default: 839 return EINVAL; 840 } 841 842 krp = pool_get(&cryptkop_pool, PR_WAITOK); 843 (void)memset(krp, 0, sizeof *krp); 844 cv_init(&krp->krp_cv, "crykdev"); 845 krp->krp_op = kop->crk_op; 846 krp->krp_status = kop->crk_status; 847 krp->krp_iparams = kop->crk_iparams; 848 krp->krp_oparams = kop->crk_oparams; 849 krp->krp_status = 0; 850 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 851 852 for (i = 0; i < CRK_MAXPARAM; i++) 853 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 854 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 855 size = (krp->krp_param[i].crp_nbits + 7) / 8; 856 if (size == 0) 857 continue; 858 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 859 if (i >= krp->krp_iparams) 860 continue; 861 error = copyin(kop->crk_param[i].crp_p, 862 krp->krp_param[i].crp_p, size); 863 if (error) 864 goto fail; 865 } 866 867 error = crypto_kdispatch(krp); 868 if (error != 0) { 869 goto fail; 870 } 871 872 mutex_enter(&crypto_mtx); 873 while (!(krp->krp_flags & CRYPTO_F_DONE)) { 874 cv_wait(&krp->krp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 875 } 876 if (krp->krp_flags & CRYPTO_F_ONRETQ) { 877 DPRINTF(("cryptodev_key: DONE early, not via cryptoret.\n")); 878 (void)crypto_ret_kq_remove(krp); 879 } 880 mutex_exit(&crypto_mtx); 881 882 if (krp->krp_status != 0) { 883 DPRINTF(("cryptodev_key: krp->krp_status 0x%08x\n", 884 krp->krp_status)); 885 error = krp->krp_status; 886 goto fail; 887 } 888 889 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 890 i++) { 891 size = (krp->krp_param[i].crp_nbits + 7) / 8; 892 if (size == 0) 893 continue; 894 error = copyout(krp->krp_param[i].crp_p, 895 kop->crk_param[i].crp_p, size); 896 if (error) { 897 DPRINTF(("cryptodev_key: copyout oparam %d failed, " 898 "error=%d\n", i-krp->krp_iparams, error)); 899 goto fail; 900 } 901 } 902 903 fail: 904 kop->crk_status = krp->krp_status; 905 for (i = 0; i < CRK_MAXPARAM; i++) { 906 struct crparam *kp = &(krp->krp_param[i]); 907 if (krp->krp_param[i].crp_p) { 908 size = (kp->crp_nbits + 7) / 8; 909 KASSERT(size > 0); 910 (void)memset(kp->crp_p, 0, size); 911 kmem_free(kp->crp_p, size); 912 } 913 } 914 cv_destroy(&krp->krp_cv); 915 pool_put(&cryptkop_pool, krp); 916 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 917 return error; 918 } 919 920 /* ARGSUSED */ 921 static int 922 cryptof_close(struct file *fp) 923 { 924 struct fcrypt *fcr = fp->f_data; 925 struct csession *cse; 926 927 mutex_enter(&crypto_mtx); 928 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 929 TAILQ_REMOVE(&fcr->csessions, cse, next); 930 mutex_exit(&crypto_mtx); 931 (void)csefree(cse); 932 mutex_enter(&crypto_mtx); 933 } 934 seldestroy(&fcr->sinfo); 935 fp->f_data = NULL; 936 mutex_exit(&crypto_mtx); 937 938 pool_put(&fcrpl, fcr); 939 return 0; 940 } 941 942 /* needed for compatibility module */ 943 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 944 { 945 return csefind(fcr, ses); 946 } 947 948 /* csefind: call with crypto_mtx held. */ 949 static struct csession * 950 csefind(struct fcrypt *fcr, u_int ses) 951 { 952 struct csession *cse, *cnext, *ret = NULL; 953 954 KASSERT(mutex_owned(&crypto_mtx)); 955 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 956 if (cse->ses == ses) 957 ret = cse; 958 959 return ret; 960 } 961 962 /* csedelete: call with crypto_mtx held. */ 963 static int 964 csedelete(struct fcrypt *fcr, struct csession *cse_del) 965 { 966 struct csession *cse, *cnext; 967 int ret = 0; 968 969 KASSERT(mutex_owned(&crypto_mtx)); 970 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 971 if (cse == cse_del) { 972 TAILQ_REMOVE(&fcr->csessions, cse, next); 973 ret = 1; 974 } 975 } 976 return ret; 977 } 978 979 static struct csession * 980 cseadd(struct fcrypt *fcr, struct csession *cse) 981 { 982 mutex_enter(&crypto_mtx); 983 /* don't let session ID wrap! */ 984 if (fcr->sesn + 1 == 0) return NULL; 985 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 986 cse->ses = fcr->sesn++; 987 mutex_exit(&crypto_mtx); 988 return cse; 989 } 990 991 static struct csession * 992 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 993 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 994 u_int32_t comp_alg, const struct enc_xform *txform, 995 const struct auth_hash *thash, const struct comp_algo *tcomp) 996 { 997 struct csession *cse; 998 999 cse = pool_get(&csepl, PR_NOWAIT); 1000 if (cse == NULL) 1001 return NULL; 1002 cse->key = key; 1003 cse->keylen = keylen/8; 1004 cse->mackey = mackey; 1005 cse->mackeylen = mackeylen/8; 1006 cse->sid = sid; 1007 cse->cipher = cipher; 1008 cse->mac = mac; 1009 cse->comp_alg = comp_alg; 1010 cse->txform = txform; 1011 cse->thash = thash; 1012 cse->tcomp = tcomp; 1013 cse->error = 0; 1014 if (cseadd(fcr, cse)) 1015 return cse; 1016 else { 1017 pool_put(&csepl, cse); 1018 return NULL; 1019 } 1020 } 1021 1022 /* csefree: call with crypto_mtx held. */ 1023 static int 1024 csefree(struct csession *cse) 1025 { 1026 int error; 1027 1028 error = crypto_freesession(cse->sid); 1029 if (cse->key) 1030 free(cse->key, M_XDATA); 1031 if (cse->mackey) 1032 free(cse->mackey, M_XDATA); 1033 pool_put(&csepl, cse); 1034 return error; 1035 } 1036 1037 static int 1038 cryptoopen(dev_t dev, int flag, int mode, 1039 struct lwp *l) 1040 { 1041 file_t *fp; 1042 struct fcrypt *fcr; 1043 int fd, error; 1044 1045 if (crypto_usercrypto == 0) 1046 return ENXIO; 1047 1048 if ((error = fd_allocfile(&fp, &fd)) != 0) 1049 return error; 1050 1051 fcr = pool_get(&fcrpl, PR_WAITOK); 1052 getnanotime(&fcr->btime); 1053 fcr->atime = fcr->mtime = fcr->btime; 1054 mutex_enter(&crypto_mtx); 1055 TAILQ_INIT(&fcr->csessions); 1056 TAILQ_INIT(&fcr->crp_ret_mq); 1057 TAILQ_INIT(&fcr->crp_ret_mkq); 1058 selinit(&fcr->sinfo); 1059 /* 1060 * Don't ever return session 0, to allow detection of 1061 * failed creation attempts with multi-create ioctl. 1062 */ 1063 fcr->sesn = 1; 1064 fcr->requestid = 1; 1065 mutex_exit(&crypto_mtx); 1066 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1067 } 1068 1069 static int 1070 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1071 { 1072 return EIO; 1073 } 1074 1075 static int 1076 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1077 { 1078 return EIO; 1079 } 1080 1081 int 1082 cryptoselect(dev_t dev, int rw, struct lwp *l) 1083 { 1084 return 0; 1085 } 1086 1087 /*static*/ 1088 struct cdevsw crypto_cdevsw = { 1089 /* open */ cryptoopen, 1090 /* close */ noclose, 1091 /* read */ cryptoread, 1092 /* write */ cryptowrite, 1093 /* ioctl */ noioctl, 1094 /* ttstop?*/ nostop, 1095 /* ??*/ notty, 1096 /* poll */ cryptoselect /*nopoll*/, 1097 /* mmap */ nommap, 1098 /* kqfilter */ nokqfilter, 1099 /* type */ D_OTHER, 1100 }; 1101 1102 int 1103 cryptodev_mop(struct fcrypt *fcr, 1104 struct crypt_n_op * cnop, 1105 int count, struct lwp *l) 1106 { 1107 struct cryptop *crp = NULL; 1108 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1109 int req, error=0; 1110 struct csession *cse; 1111 int flags=0; 1112 int iov_len; 1113 1114 for (req = 0; req < count; req++) { 1115 mutex_enter(&crypto_mtx); 1116 cse = csefind(fcr, cnop[req].ses); 1117 if (cse == NULL) { 1118 DPRINTF(("csefind failed\n")); 1119 cnop[req].status = EINVAL; 1120 mutex_exit(&crypto_mtx); 1121 continue; 1122 } 1123 mutex_exit(&crypto_mtx); 1124 1125 if (cnop[req].len > 256*1024-4) { 1126 DPRINTF(("length failed\n")); 1127 cnop[req].status = EINVAL; 1128 continue; 1129 } 1130 if (cse->txform) { 1131 if (cnop[req].len < cse->txform->blocksize - 1132 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1133 (cnop[req].len - 1134 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1135 % cse->txform->blocksize) { 1136 cnop[req].status = EINVAL; 1137 continue; 1138 } 1139 } 1140 1141 crp = crypto_getreq((cse->txform != NULL) + 1142 (cse->thash != NULL) + 1143 (cse->tcomp != NULL)); 1144 if (crp == NULL) { 1145 cnop[req].status = ENOMEM; 1146 goto bail; 1147 } 1148 1149 iov_len = cnop[req].len; 1150 /* got a compression/decompression max size? */ 1151 if ((cse->tcomp) && cnop[req].dst_len) { 1152 if (iov_len < cnop[req].dst_len) { 1153 /* Need larger iov to deal with decompress */ 1154 iov_len = cnop[req].dst_len; 1155 } 1156 DPRINTF(("cryptodev_mop: iov_len -> %d for decompress\n", iov_len)); 1157 } 1158 1159 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1160 crp->uio.uio_iovcnt = 1; 1161 crp->uio.uio_resid = 0; 1162 crp->uio.uio_rw = UIO_WRITE; 1163 crp->uio.uio_iov = crp->iovec; 1164 UIO_SETUP_SYSSPACE(&crp->uio); 1165 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1166 crp->uio.uio_iov[0].iov_len = iov_len; 1167 DPRINTF(("cryptodev_mop: kmem_alloc(%d) for iov \n", iov_len)); 1168 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1169 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1170 1171 if (cse->tcomp) { 1172 crdc = crp->crp_desc; 1173 } 1174 1175 if (cse->thash) { 1176 crda = crdc ? crdc->crd_next : crp->crp_desc; 1177 if (cse->txform && crda) 1178 crde = crda->crd_next; 1179 } else { 1180 if (cse->txform) { 1181 crde = crdc ? crdc->crd_next : crp->crp_desc; 1182 } else if (!cse->tcomp) { 1183 error = EINVAL; 1184 goto bail; 1185 } 1186 } 1187 1188 if ((copyin(cnop[req].src, 1189 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1190 cnop[req].status = EINVAL; 1191 goto bail; 1192 } 1193 1194 if (crdc) { 1195 switch (cnop[req].op) { 1196 case COP_COMP: 1197 crdc->crd_flags |= CRD_F_COMP; 1198 break; 1199 case COP_DECOMP: 1200 crdc->crd_flags &= ~CRD_F_COMP; 1201 break; 1202 default: 1203 break; 1204 } 1205 /* more data to follow? */ 1206 if (cnop[req].flags & COP_F_MORE) { 1207 flags |= CRYPTO_F_MORE; 1208 } 1209 crdc->crd_len = cnop[req].len; 1210 crdc->crd_inject = 0; 1211 1212 crdc->crd_alg = cse->comp_alg; 1213 crdc->crd_key = NULL; 1214 crdc->crd_klen = 0; 1215 DPRINTF(("cryptodev_mop[%d]: crdc setup for comp_alg %d" 1216 " len %d.\n", 1217 (uint32_t)cse->sid, crdc->crd_alg, 1218 crdc->crd_len)); 1219 } 1220 1221 if (crda) { 1222 crda->crd_skip = 0; 1223 crda->crd_len = cnop[req].len; 1224 crda->crd_inject = 0; /* ??? */ 1225 1226 crda->crd_alg = cse->mac; 1227 crda->crd_key = cse->mackey; 1228 crda->crd_klen = cse->mackeylen * 8; 1229 } 1230 1231 if (crde) { 1232 if (cnop[req].op == COP_ENCRYPT) 1233 crde->crd_flags |= CRD_F_ENCRYPT; 1234 else 1235 crde->crd_flags &= ~CRD_F_ENCRYPT; 1236 crde->crd_len = cnop[req].len; 1237 crde->crd_inject = 0; 1238 1239 crde->crd_alg = cse->cipher; 1240 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1241 if(cnop[req].key && cnop[req].keylen) { 1242 crde->crd_key = malloc(cnop[req].keylen, 1243 M_XDATA, M_WAITOK); 1244 if((error = copyin(cnop[req].key, 1245 crde->crd_key, cnop[req].keylen))) { 1246 cnop[req].status = EINVAL; 1247 goto bail; 1248 } 1249 crde->crd_klen = cnop[req].keylen * 8; 1250 } else { ... } 1251 #endif 1252 crde->crd_key = cse->key; 1253 crde->crd_klen = cse->keylen * 8; 1254 } 1255 1256 crp->crp_ilen = cnop[req].len; 1257 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | 1258 (cnop[req].flags & COP_F_BATCH) | flags; 1259 crp->crp_buf = (void *)&crp->uio; 1260 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_mcb; 1261 crp->crp_sid = cse->sid; 1262 crp->crp_opaque = (void *)cse; 1263 crp->fcrp = fcr; 1264 crp->dst = cnop[req].dst; 1265 crp->len = cnop[req].len; /* input len, iov may be larger */ 1266 crp->mac = cnop[req].mac; 1267 DPRINTF(("cryptodev_mop: iov_base %p dst %p len %d mac %p\n", 1268 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1269 crp->mac)); 1270 1271 if (cnop[req].iv) { 1272 if (crde == NULL) { 1273 cnop[req].status = EINVAL; 1274 goto bail; 1275 } 1276 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1277 cnop[req].status = EINVAL; 1278 goto bail; 1279 } 1280 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1281 cse->txform->ivsize))) { 1282 cnop[req].status = EINVAL; 1283 goto bail; 1284 } 1285 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1286 cse->txform->ivsize); 1287 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1288 crde->crd_skip = 0; 1289 } else if (crde) { 1290 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1291 crde->crd_skip = 0; 1292 } else { 1293 crde->crd_flags |= CRD_F_IV_PRESENT; 1294 crde->crd_skip = cse->txform->ivsize; 1295 crde->crd_len -= cse->txform->ivsize; 1296 } 1297 } 1298 1299 if (cnop[req].mac) { 1300 if (crda == NULL) { 1301 cnop[req].status = EINVAL; 1302 goto bail; 1303 } 1304 crp->crp_mac=cse->tmp_mac; 1305 } 1306 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1307 crp->crp_reqid = cnop[req].reqid; 1308 crp->crp_usropaque = cnop[req].opaque; 1309 #ifdef notyet 1310 eagain: 1311 #endif 1312 cnop[req].status = crypto_dispatch(crp); 1313 mutex_enter(&crypto_mtx); /* XXX why mutex? */ 1314 1315 switch (cnop[req].status) { 1316 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1317 case EAGAIN: 1318 mutex_exit(&crypto_mtx); 1319 goto eagain; 1320 break; 1321 #endif 1322 case 0: 1323 break; 1324 default: 1325 DPRINTF(("cryptodev_op: not waiting, error.\n")); 1326 mutex_exit(&crypto_mtx); 1327 goto bail; 1328 } 1329 1330 mutex_exit(&crypto_mtx); 1331 bail: 1332 if (cnop[req].status) { 1333 if (crp) { 1334 if (crp->uio.uio_iov[0].iov_base) { 1335 kmem_free(crp->uio.uio_iov[0].iov_base, 1336 crp->uio.uio_iov[0].iov_len); 1337 } 1338 crypto_freereq(crp); 1339 } 1340 error = 0; 1341 } 1342 } 1343 return error; 1344 } 1345 1346 static int 1347 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1348 { 1349 struct cryptkop *krp = NULL; 1350 int error = EINVAL; 1351 int in, out, size, i, req; 1352 1353 for (req = 0; req < count; req++) { 1354 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1355 return EFBIG; 1356 1357 in = kop[req].crk_iparams; 1358 out = kop[req].crk_oparams; 1359 switch (kop[req].crk_op) { 1360 case CRK_MOD_EXP: 1361 if (in == 3 && out == 1) 1362 break; 1363 kop[req].crk_status = EINVAL; 1364 continue; 1365 case CRK_MOD_EXP_CRT: 1366 if (in == 6 && out == 1) 1367 break; 1368 kop[req].crk_status = EINVAL; 1369 continue; 1370 case CRK_DSA_SIGN: 1371 if (in == 5 && out == 2) 1372 break; 1373 kop[req].crk_status = EINVAL; 1374 continue; 1375 case CRK_DSA_VERIFY: 1376 if (in == 7 && out == 0) 1377 break; 1378 kop[req].crk_status = EINVAL; 1379 continue; 1380 case CRK_DH_COMPUTE_KEY: 1381 if (in == 3 && out == 1) 1382 break; 1383 kop[req].crk_status = EINVAL; 1384 continue; 1385 case CRK_MOD_ADD: 1386 if (in == 3 && out == 1) 1387 break; 1388 kop[req].crk_status = EINVAL; 1389 continue; 1390 case CRK_MOD_ADDINV: 1391 if (in == 2 && out == 1) 1392 break; 1393 kop[req].crk_status = EINVAL; 1394 continue; 1395 case CRK_MOD_SUB: 1396 if (in == 3 && out == 1) 1397 break; 1398 kop[req].crk_status = EINVAL; 1399 continue; 1400 case CRK_MOD_MULT: 1401 if (in == 3 && out == 1) 1402 break; 1403 kop[req].crk_status = EINVAL; 1404 continue; 1405 case CRK_MOD_MULTINV: 1406 if (in == 2 && out == 1) 1407 break; 1408 kop[req].crk_status = EINVAL; 1409 continue; 1410 case CRK_MOD: 1411 if (in == 2 && out == 1) 1412 break; 1413 kop[req].crk_status = EINVAL; 1414 continue; 1415 default: 1416 kop[req].crk_status = EINVAL; 1417 continue; 1418 } 1419 1420 krp = pool_get(&cryptkop_pool, PR_WAITOK); 1421 (void)memset(krp, 0, sizeof *krp); 1422 cv_init(&krp->krp_cv, "crykdev"); 1423 krp->krp_op = kop[req].crk_op; 1424 krp->krp_status = kop[req].crk_status; 1425 krp->krp_iparams = kop[req].crk_iparams; 1426 krp->krp_oparams = kop[req].crk_oparams; 1427 krp->krp_status = 0; 1428 krp->krp_callback = 1429 (int (*) (struct cryptkop *)) cryptodevkey_mcb; 1430 (void)memcpy(krp->crk_param, kop[req].crk_param, 1431 sizeof(kop[req].crk_param)); 1432 1433 krp->krp_flags = CRYPTO_F_CBIMM; 1434 1435 for (i = 0; i < CRK_MAXPARAM; i++) 1436 krp->krp_param[i].crp_nbits = 1437 kop[req].crk_param[i].crp_nbits; 1438 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1439 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1440 if (size == 0) 1441 continue; 1442 krp->krp_param[i].crp_p = 1443 kmem_alloc(size, KM_SLEEP); 1444 if (i >= krp->krp_iparams) 1445 continue; 1446 kop[req].crk_status = 1447 copyin(kop[req].crk_param[i].crp_p, 1448 krp->krp_param[i].crp_p, size); 1449 if (kop[req].crk_status) 1450 goto fail; 1451 } 1452 krp->fcrp = fcr; 1453 1454 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1455 krp->krp_reqid = kop[req].crk_reqid; 1456 krp->krp_usropaque = kop[req].crk_opaque; 1457 1458 kop[req].crk_status = crypto_kdispatch(krp); 1459 if (kop[req].crk_status != 0) { 1460 goto fail; 1461 } 1462 1463 fail: 1464 if(kop[req].crk_status) { 1465 if (krp) { 1466 kop[req].crk_status = krp->krp_status; 1467 for (i = 0; i < CRK_MAXPARAM; i++) { 1468 struct crparam *kp = 1469 &(krp->krp_param[i]); 1470 if (kp->crp_p) { 1471 size = (kp->crp_nbits + 7) / 8; 1472 KASSERT(size > 0); 1473 memset(kp->crp_p, 0, size); 1474 kmem_free(kp->crp_p, size); 1475 } 1476 } 1477 cv_destroy(&krp->krp_cv); 1478 pool_put(&cryptkop_pool, krp); 1479 } 1480 } 1481 error = 0; 1482 } 1483 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 1484 return error; 1485 } 1486 1487 int 1488 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1489 { 1490 struct cryptoini cria, crie; 1491 struct cryptoini cric; /* compressor */ 1492 struct cryptoini *crihead = NULL; 1493 const struct enc_xform *txform = NULL; 1494 const struct auth_hash *thash = NULL; 1495 const struct comp_algo *tcomp = NULL; 1496 struct csession *cse; 1497 u_int64_t sid; 1498 int error = 0; 1499 1500 DPRINTF(("cryptodev_session() cipher=%d, mac=%d\n", sop->cipher, sop->mac)); 1501 1502 /* XXX there must be a way to not embed the list of xforms here */ 1503 switch (sop->cipher) { 1504 case 0: 1505 break; 1506 case CRYPTO_DES_CBC: 1507 txform = &enc_xform_des; 1508 break; 1509 case CRYPTO_3DES_CBC: 1510 txform = &enc_xform_3des; 1511 break; 1512 case CRYPTO_BLF_CBC: 1513 txform = &enc_xform_blf; 1514 break; 1515 case CRYPTO_CAST_CBC: 1516 txform = &enc_xform_cast5; 1517 break; 1518 case CRYPTO_SKIPJACK_CBC: 1519 txform = &enc_xform_skipjack; 1520 break; 1521 case CRYPTO_AES_CBC: 1522 txform = &enc_xform_rijndael128; 1523 break; 1524 case CRYPTO_CAMELLIA_CBC: 1525 txform = &enc_xform_camellia; 1526 break; 1527 case CRYPTO_AES_CTR: 1528 txform = &enc_xform_aes_ctr; 1529 break; 1530 case CRYPTO_NULL_CBC: 1531 txform = &enc_xform_null; 1532 break; 1533 case CRYPTO_ARC4: 1534 txform = &enc_xform_arc4; 1535 break; 1536 default: 1537 DPRINTF(("Invalid cipher %d\n", sop->cipher)); 1538 return EINVAL; 1539 } 1540 1541 switch (sop->comp_alg) { 1542 case 0: 1543 break; 1544 case CRYPTO_DEFLATE_COMP: 1545 tcomp = &comp_algo_deflate; 1546 break; 1547 case CRYPTO_GZIP_COMP: 1548 tcomp = &comp_algo_gzip; 1549 DPRINTF(("cryptodev_session() tcomp for GZIP\n")); 1550 break; 1551 default: 1552 DPRINTF(("Invalid compression alg %d\n", sop->comp_alg)); 1553 return EINVAL; 1554 } 1555 1556 switch (sop->mac) { 1557 case 0: 1558 break; 1559 case CRYPTO_MD5_HMAC: 1560 thash = &auth_hash_hmac_md5; 1561 break; 1562 case CRYPTO_SHA1_HMAC: 1563 thash = &auth_hash_hmac_sha1; 1564 break; 1565 case CRYPTO_MD5_HMAC_96: 1566 thash = &auth_hash_hmac_md5_96; 1567 break; 1568 case CRYPTO_SHA1_HMAC_96: 1569 thash = &auth_hash_hmac_sha1_96; 1570 break; 1571 case CRYPTO_SHA2_HMAC: 1572 /* XXX switching on key length seems questionable */ 1573 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1574 thash = &auth_hash_hmac_sha2_256; 1575 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1576 thash = &auth_hash_hmac_sha2_384; 1577 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1578 thash = &auth_hash_hmac_sha2_512; 1579 } else { 1580 DPRINTF(("Invalid mackeylen %d\n", sop->mackeylen)); 1581 return EINVAL; 1582 } 1583 break; 1584 case CRYPTO_RIPEMD160_HMAC: 1585 thash = &auth_hash_hmac_ripemd_160; 1586 break; 1587 case CRYPTO_RIPEMD160_HMAC_96: 1588 thash = &auth_hash_hmac_ripemd_160_96; 1589 break; 1590 case CRYPTO_MD5: 1591 thash = &auth_hash_md5; 1592 break; 1593 case CRYPTO_SHA1: 1594 thash = &auth_hash_sha1; 1595 break; 1596 case CRYPTO_NULL_HMAC: 1597 thash = &auth_hash_null; 1598 break; 1599 default: 1600 DPRINTF(("Invalid mac %d\n", sop->mac)); 1601 return EINVAL; 1602 } 1603 1604 memset(&crie, 0, sizeof(crie)); 1605 memset(&cria, 0, sizeof(cria)); 1606 memset(&cric, 0, sizeof(cric)); 1607 1608 if (tcomp) { 1609 cric.cri_alg = tcomp->type; 1610 cric.cri_klen = 0; 1611 DPRINTF(("tcomp->type = %d\n", tcomp->type)); 1612 1613 crihead = &cric; 1614 if (thash) { 1615 cric.cri_next = &cria; 1616 } else if (txform) { 1617 cric.cri_next = &crie; 1618 } 1619 } 1620 1621 if (txform) { 1622 crie.cri_alg = txform->type; 1623 crie.cri_klen = sop->keylen * 8; 1624 if (sop->keylen > txform->maxkey || 1625 sop->keylen < txform->minkey) { 1626 DPRINTF(("keylen %d not in [%d,%d]\n", 1627 sop->keylen, txform->minkey, txform->maxkey)); 1628 error = EINVAL; 1629 goto bail; 1630 } 1631 1632 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1633 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1634 goto bail; 1635 if (!crihead) { 1636 crihead = &crie; 1637 } 1638 } 1639 1640 if (thash) { 1641 cria.cri_alg = thash->type; 1642 cria.cri_klen = sop->mackeylen * 8; 1643 if (sop->mackeylen != thash->keysize) { 1644 DPRINTF(("mackeylen %d != keysize %d\n", 1645 sop->mackeylen, thash->keysize)); 1646 error = EINVAL; 1647 goto bail; 1648 } 1649 if (cria.cri_klen) { 1650 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1651 M_WAITOK); 1652 if ((error = copyin(sop->mackey, cria.cri_key, 1653 cria.cri_klen / 8))) { 1654 goto bail; 1655 } 1656 } 1657 if (txform) 1658 cria.cri_next = &crie; /* XXX forces enc then hash? */ 1659 if (!crihead) { 1660 crihead = &cria; 1661 } 1662 } 1663 1664 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1665 if (!error) { 1666 DPRINTF(("cyrptodev_session: got session %d\n", (uint32_t)sid)); 1667 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1668 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1669 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1670 if (cse != NULL) { 1671 sop->ses = cse->ses; 1672 } else { 1673 DPRINTF(("csecreate failed\n")); 1674 crypto_freesession(sid); 1675 error = EINVAL; 1676 } 1677 } else { 1678 DPRINTF(("SIOCSESSION violates kernel parameters %d\n", 1679 error)); 1680 } 1681 bail: 1682 if (error) { 1683 if (crie.cri_key) { 1684 memset(crie.cri_key, 0, crie.cri_klen / 8); 1685 free(crie.cri_key, M_XDATA); 1686 } 1687 if (cria.cri_key) { 1688 memset(cria.cri_key, 0, cria.cri_klen / 8); 1689 free(cria.cri_key, M_XDATA); 1690 } 1691 } 1692 return error; 1693 } 1694 1695 int 1696 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1697 int count) 1698 { 1699 int i; 1700 1701 for (i = 0; i < count; i++, sn_ops++) { 1702 struct session_op s_op; 1703 s_op.cipher = sn_ops->cipher; 1704 s_op.mac = sn_ops->mac; 1705 s_op.keylen = sn_ops->keylen; 1706 s_op.key = sn_ops->key; 1707 s_op.mackeylen = sn_ops->mackeylen; 1708 s_op.mackey = sn_ops->mackey; 1709 1710 sn_ops->status = cryptodev_session(fcr, &s_op); 1711 sn_ops->ses = s_op.ses; 1712 } 1713 1714 return 0; 1715 } 1716 1717 static int 1718 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1719 { 1720 struct csession *cse; 1721 int req, error = 0; 1722 1723 mutex_enter(&crypto_mtx); 1724 for(req = 0; req < count; req++) { 1725 cse = csefind(fcr, sesid[req]); 1726 if (cse == NULL) 1727 continue; 1728 csedelete(fcr, cse); 1729 mutex_exit(&crypto_mtx); 1730 error = csefree(cse); 1731 mutex_enter(&crypto_mtx); 1732 } 1733 mutex_exit(&crypto_mtx); 1734 return 0; 1735 } 1736 1737 /* 1738 * collect as many completed requests as are availble, or count completed 1739 * requests whichever is less. 1740 * return the number of requests. 1741 */ 1742 static int 1743 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1744 int count) 1745 { 1746 struct cryptop *crp = NULL; 1747 struct cryptkop *krp = NULL; 1748 struct csession *cse; 1749 int i, size, req = 0; 1750 int completed=0; 1751 1752 /* On queue so nobody else can grab them 1753 * and copyout can be delayed-- no locking */ 1754 TAILQ_HEAD(, cryptop) crp_delfree_q = 1755 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1756 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1757 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1758 1759 /* at this point we do not know which response user is requesting for 1760 * (symmetric or asymmetric) so we copyout one from each i.e if the 1761 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1762 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1763 1764 /* pull off a list of requests while protected from changes */ 1765 mutex_enter(&crypto_mtx); 1766 while (req < count) { 1767 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1768 if (crp) { 1769 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1770 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1771 cse = (struct csession *)crp->crp_opaque; 1772 1773 /* see if the session is still valid */ 1774 cse = csefind(fcr, cse->ses); 1775 if (cse != NULL) { 1776 crypt_res[req].status = 0; 1777 } else { 1778 DPRINTF(("csefind failed\n")); 1779 crypt_res[req].status = EINVAL; 1780 } 1781 req++; 1782 } 1783 if(req < count) { 1784 crypt_res[req].status = 0; 1785 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1786 if (krp) { 1787 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1788 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1789 req++; 1790 } 1791 } 1792 } 1793 mutex_exit(&crypto_mtx); 1794 1795 /* now do all the work outside the mutex */ 1796 for(req=0; req < count ;) { 1797 crp = TAILQ_FIRST(&crp_delfree_q); 1798 if (crp) { 1799 if (crypt_res[req].status != 0) { 1800 /* csefind failed during collection */ 1801 goto bail; 1802 } 1803 cse = (struct csession *)crp->crp_opaque; 1804 crypt_res[req].reqid = crp->crp_reqid; 1805 crypt_res[req].opaque = crp->crp_usropaque; 1806 completed++; 1807 1808 if (crp->crp_etype != 0) { 1809 crypt_res[req].status = crp->crp_etype; 1810 goto bail; 1811 } 1812 1813 if (cse->error) { 1814 crypt_res[req].status = cse->error; 1815 goto bail; 1816 } 1817 1818 if (crp->dst && (crypt_res[req].status = 1819 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1820 crp->len))) 1821 goto bail; 1822 1823 if (crp->mac && (crypt_res[req].status = 1824 copyout(crp->crp_mac, crp->mac, 1825 cse->thash->authsize))) 1826 goto bail; 1827 1828 bail: 1829 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1830 kmem_free(crp->uio.uio_iov[0].iov_base, 1831 crp->uio.uio_iov[0].iov_len); 1832 crypto_freereq(crp); 1833 req++; 1834 } 1835 1836 if (req < count) { 1837 krp = TAILQ_FIRST(&krp_delfree_q); 1838 if (krp) { 1839 crypt_res[req].reqid = krp->krp_reqid; 1840 crypt_res[req].opaque = krp->krp_usropaque; 1841 completed++; 1842 if (krp->krp_status != 0) { 1843 DPRINTF(("cryptodev_key: " 1844 "krp->krp_status 0x%08x\n", 1845 krp->krp_status)); 1846 crypt_res[req].status = krp->krp_status; 1847 goto fail; 1848 } 1849 1850 for (i = krp->krp_iparams; i < krp->krp_iparams 1851 + krp->krp_oparams; i++) { 1852 size = (krp->krp_param[i].crp_nbits 1853 + 7) / 8; 1854 if (size == 0) 1855 continue; 1856 crypt_res[req].status = copyout 1857 (krp->krp_param[i].crp_p, 1858 krp->crk_param[i].crp_p, size); 1859 if (crypt_res[req].status) { 1860 DPRINTF(("cryptodev_key: " 1861 "copyout oparam %d failed, " 1862 "error=%d\n", 1863 i - krp->krp_iparams, 1864 crypt_res[req].status)); 1865 goto fail; 1866 } 1867 } 1868 fail: 1869 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1870 /* not sure what to do for this */ 1871 /* kop[req].crk_status = krp->krp_status; */ 1872 for (i = 0; i < CRK_MAXPARAM; i++) { 1873 struct crparam *kp = &(krp->krp_param[i]); 1874 if (kp->crp_p) { 1875 size = (kp->crp_nbits + 7) / 8; 1876 KASSERT(size > 0); 1877 (void)memset(kp->crp_p, 0, size); 1878 kmem_free(kp->crp_p, size); 1879 } 1880 } 1881 cv_destroy(&krp->krp_cv); 1882 pool_put(&cryptkop_pool, krp); 1883 req++; 1884 } 1885 } 1886 } 1887 1888 return completed; 1889 } 1890 1891 static int 1892 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1893 { 1894 struct cryptop *crp = NULL, *cnext; 1895 struct cryptkop *krp = NULL, *knext; 1896 struct csession *cse; 1897 int i, size, req = 0; 1898 1899 mutex_enter(&crypto_mtx); 1900 /* Here we dont know for which request the user is requesting the 1901 * response so checking in both the queues */ 1902 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1903 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1904 cse = (struct csession *)crp->crp_opaque; 1905 crypt_res->opaque = crp->crp_usropaque; 1906 cse = csefind(fcr, cse->ses); 1907 if (cse == NULL) { 1908 DPRINTF(("csefind failed\n")); 1909 crypt_res->status = EINVAL; 1910 goto bail; 1911 } 1912 1913 if (crp->crp_etype != 0) { 1914 crypt_res->status = crp->crp_etype; 1915 goto bail; 1916 } 1917 1918 if (cse->error) { 1919 crypt_res->status = cse->error; 1920 goto bail; 1921 } 1922 1923 if (crp->dst && (crypt_res->status = 1924 copyout(crp->uio.uio_iov[0].iov_base, 1925 crp->dst, crp->len))) 1926 goto bail; 1927 1928 if (crp->mac && (crypt_res->status = 1929 copyout(crp->crp_mac, crp->mac, 1930 cse->thash->authsize))) 1931 goto bail; 1932 bail: 1933 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1934 1935 mutex_exit(&crypto_mtx); 1936 crypto_freereq(crp); 1937 return 0; 1938 } 1939 } 1940 1941 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1942 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1943 crypt_res[req].opaque = krp->krp_usropaque; 1944 if (krp->krp_status != 0) { 1945 DPRINTF(("cryptodev_key: " 1946 "krp->krp_status 0x%08x\n", 1947 krp->krp_status)); 1948 crypt_res[req].status = krp->krp_status; 1949 goto fail; 1950 } 1951 1952 for (i = krp->krp_iparams; i < krp->krp_iparams + 1953 krp->krp_oparams; i++) { 1954 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1955 if (size == 0) 1956 continue; 1957 crypt_res[req].status = copyout( 1958 krp->krp_param[i].crp_p, 1959 krp->crk_param[i].crp_p, size); 1960 if (crypt_res[req].status) { 1961 DPRINTF(("cryptodev_key: copyout oparam" 1962 "%d failed, error=%d\n", 1963 i - krp->krp_iparams, 1964 crypt_res[req].status)); 1965 goto fail; 1966 } 1967 } 1968 fail: 1969 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1970 mutex_exit(&crypto_mtx); 1971 /* not sure what to do for this */ 1972 /* kop[req].crk_status = krp->krp_status; */ 1973 for (i = 0; i < CRK_MAXPARAM; i++) { 1974 struct crparam *kp = &(krp->krp_param[i]); 1975 if (kp->crp_p) { 1976 size = (kp->crp_nbits + 7) / 8; 1977 KASSERT(size > 0); 1978 memset(kp->crp_p, 0, size); 1979 kmem_free(kp->crp_p, size); 1980 } 1981 } 1982 cv_destroy(&krp->krp_cv); 1983 pool_put(&cryptkop_pool, krp); 1984 return 0; 1985 } 1986 } 1987 mutex_exit(&crypto_mtx); 1988 return EINPROGRESS; 1989 } 1990 1991 static int 1992 cryptof_stat(struct file *fp, struct stat *st) 1993 { 1994 struct fcrypt *fcr = fp->f_data; 1995 1996 (void)memset(st, 0, sizeof(st)); 1997 1998 mutex_enter(&crypto_mtx); 1999 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2000 st->st_atimespec = fcr->atime; 2001 st->st_mtimespec = fcr->mtime; 2002 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2003 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2004 st->st_gid = kauth_cred_getegid(fp->f_cred); 2005 mutex_exit(&crypto_mtx); 2006 2007 return 0; 2008 } 2009 2010 static int 2011 cryptof_poll(struct file *fp, int events) 2012 { 2013 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 2014 int revents = 0; 2015 2016 if (!(events & (POLLIN | POLLRDNORM))) { 2017 /* only support read and POLLIN */ 2018 return 0; 2019 } 2020 2021 mutex_enter(&crypto_mtx); 2022 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2023 /* no completed requests pending, save the poll for later */ 2024 selrecord(curlwp, &fcr->sinfo); 2025 } else { 2026 /* let the app(s) know that there are completed requests */ 2027 revents = events & (POLLIN | POLLRDNORM); 2028 } 2029 mutex_exit(&crypto_mtx); 2030 2031 return revents; 2032 } 2033 2034 /* 2035 * Pseudo-device initialization routine for /dev/crypto 2036 */ 2037 void cryptoattach(int); 2038 2039 void 2040 cryptoattach(int num) 2041 { 2042 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2043 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2044 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2045 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2046 2047 /* 2048 * Preallocate space for 64 users, with 5 sessions each. 2049 * (consider that a TLS protocol session requires at least 2050 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2051 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2052 * consuming one session here for each algorithm. 2053 */ 2054 pool_prime(&fcrpl, 64); 2055 pool_prime(&csepl, 64 * 5); 2056 } 2057
Indexes created Tue Sep 23 07:09:52 GMT 2025