cryptodev.c revision 1.85.2.3
1 /* $NetBSD: cryptodev.c,v 1.85.2.3 2016/07/26 05:54:40 pgoyette 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 1.85.2.3 2016/07/26 05:54:40 pgoyette Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kmem.h> 72 #include <sys/malloc.h> 73 #include <sys/mbuf.h> 74 #include <sys/pool.h> 75 #include <sys/sysctl.h> 76 #include <sys/file.h> 77 #include <sys/filedesc.h> 78 #include <sys/errno.h> 79 #include <sys/md5.h> 80 #include <sys/sha1.h> 81 #include <sys/conf.h> 82 #include <sys/device.h> 83 #include <sys/kauth.h> 84 #include <sys/select.h> 85 #include <sys/poll.h> 86 #include <sys/atomic.h> 87 #include <sys/stat.h> 88 #include <sys/module.h> 89 #include <sys/localcount.h> 90 91 #ifdef _KERNEL_OPT 92 #include "opt_ocf.h" 93 #include "opt_compat_netbsd.h" 94 #endif 95 96 #include <opencrypto/cryptodev.h> 97 #include <opencrypto/cryptodev_internal.h> 98 #include <opencrypto/xform.h> 99 100 #include "ioconf.h" 101 102 struct csession { 103 TAILQ_ENTRY(csession) next; 104 u_int64_t sid; 105 u_int32_t ses; 106 107 u_int32_t cipher; /* note: shares name space in crd_alg */ 108 const struct enc_xform *txform; 109 u_int32_t mac; /* note: shares name space in crd_alg */ 110 const struct auth_hash *thash; 111 u_int32_t comp_alg; /* note: shares name space in crd_alg */ 112 const struct comp_algo *tcomp; 113 114 void * key; 115 int keylen; 116 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 117 118 void * mackey; 119 int mackeylen; 120 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 121 122 struct iovec iovec[1]; /* user requests never have more */ 123 struct uio uio; 124 int error; 125 }; 126 127 struct fcrypt { 128 TAILQ_HEAD(csessionlist, csession) csessions; 129 TAILQ_HEAD(crprethead, cryptop) crp_ret_mq; 130 TAILQ_HEAD(krprethead, cryptkop) crp_ret_mkq; 131 int sesn; 132 struct selinfo sinfo; 133 u_int32_t requestid; 134 struct timespec atime; 135 struct timespec mtime; 136 struct timespec btime; 137 }; 138 139 /* For our fixed-size allocations */ 140 static struct pool fcrpl; 141 static struct pool csepl; 142 143 /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ 144 static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l); 145 static int cryptoread(dev_t dev, struct uio *uio, int ioflag); 146 static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); 147 static int cryptoselect(dev_t dev, int rw, struct lwp *l); 148 149 static int crypto_refcount = 0; /* Prevent detaching while in use */ 150 151 /* Declaration of cloned-device (per-ctxt) entrypoints */ 152 static int cryptof_read(struct file *, off_t *, struct uio *, 153 kauth_cred_t, int); 154 static int cryptof_write(struct file *, off_t *, struct uio *, 155 kauth_cred_t, int); 156 static int cryptof_ioctl(struct file *, u_long, void *); 157 static int cryptof_close(struct file *); 158 static int cryptof_poll(struct file *, int); 159 static int cryptof_stat(struct file *, struct stat *); 160 161 static const struct fileops cryptofops = { 162 .fo_read = cryptof_read, 163 .fo_write = cryptof_write, 164 .fo_ioctl = cryptof_ioctl, 165 .fo_fcntl = fnullop_fcntl, 166 .fo_poll = cryptof_poll, 167 .fo_stat = cryptof_stat, 168 .fo_close = cryptof_close, 169 .fo_kqfilter = fnullop_kqfilter, 170 .fo_restart = fnullop_restart, 171 }; 172 173 struct csession *cryptodev_csefind(struct fcrypt *, u_int); 174 static struct csession *csefind(struct fcrypt *, u_int); 175 static int csedelete(struct fcrypt *, struct csession *); 176 static struct csession *cseadd(struct fcrypt *, struct csession *); 177 static struct csession *csecreate(struct fcrypt *, u_int64_t, void *, 178 u_int64_t, void *, u_int64_t, u_int32_t, u_int32_t, u_int32_t, 179 const struct enc_xform *, const struct auth_hash *, 180 const struct comp_algo *); 181 static int csefree(struct csession *); 182 183 static int cryptodev_key(struct crypt_kop *); 184 static int cryptodev_mkey(struct fcrypt *, struct crypt_n_kop *, int); 185 static int cryptodev_msessionfin(struct fcrypt *, int, u_int32_t *); 186 187 static int cryptodev_cb(void *); 188 static int cryptodevkey_cb(void *); 189 190 static int cryptodev_mcb(void *); 191 static int cryptodevkey_mcb(void *); 192 193 static int cryptodev_getmstatus(struct fcrypt *, struct crypt_result *, 194 int); 195 static int cryptodev_getstatus(struct fcrypt *, struct crypt_result *); 196 197 #ifdef COMPAT_50 198 extern int ocryptof_ioctl(struct file *, u_long, void *); 199 #endif 200 201 /* 202 * sysctl-able control variables for /dev/crypto now defined in crypto.c: 203 * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. 204 */ 205 206 /* ARGSUSED */ 207 int 208 cryptof_read(file_t *fp, off_t *poff, 209 struct uio *uio, kauth_cred_t cred, int flags) 210 { 211 return EIO; 212 } 213 214 /* ARGSUSED */ 215 int 216 cryptof_write(file_t *fp, off_t *poff, 217 struct uio *uio, kauth_cred_t cred, int flags) 218 { 219 return EIO; 220 } 221 222 /* ARGSUSED */ 223 int 224 cryptof_ioctl(struct file *fp, u_long cmd, void *data) 225 { 226 struct fcrypt *fcr = fp->f_fcrypt; 227 struct csession *cse; 228 struct session_op *sop; 229 struct session_n_op *snop; 230 struct crypt_op *cop; 231 struct crypt_mop *mop; 232 struct crypt_mkop *mkop; 233 struct crypt_n_op *cnop; 234 struct crypt_n_kop *knop; 235 struct crypt_sgop *sgop; 236 struct crypt_sfop *sfop; 237 struct cryptret *crypt_ret; 238 struct crypt_result *crypt_res; 239 u_int32_t ses; 240 u_int32_t *sesid; 241 int error = 0; 242 size_t count; 243 244 /* backwards compatibility */ 245 file_t *criofp; 246 struct fcrypt *criofcr; 247 int criofd; 248 249 mutex_enter(&crypto_mtx); 250 getnanotime(&fcr->atime); 251 mutex_exit(&crypto_mtx); 252 253 switch (cmd) { 254 case CRIOGET: /* XXX deprecated, remove after 5.0 */ 255 if ((error = fd_allocfile(&criofp, &criofd)) != 0) 256 return error; 257 criofcr = pool_get(&fcrpl, PR_WAITOK); 258 mutex_enter(&crypto_mtx); 259 TAILQ_INIT(&criofcr->csessions); 260 TAILQ_INIT(&criofcr->crp_ret_mq); 261 TAILQ_INIT(&criofcr->crp_ret_mkq); 262 selinit(&criofcr->sinfo); 263 264 /* 265 * Don't ever return session 0, to allow detection of 266 * failed creation attempts with multi-create ioctl. 267 */ 268 criofcr->sesn = 1; 269 criofcr->requestid = 1; 270 crypto_refcount++; 271 mutex_exit(&crypto_mtx); 272 (void)fd_clone(criofp, criofd, (FREAD|FWRITE), 273 &cryptofops, criofcr); 274 *(u_int32_t *)data = criofd; 275 return error; 276 break; 277 case CIOCGSESSION: 278 sop = (struct session_op *)data; 279 error = cryptodev_session(fcr, sop); 280 break; 281 case CIOCNGSESSION: 282 sgop = (struct crypt_sgop *)data; 283 snop = kmem_alloc((sgop->count * 284 sizeof(struct session_n_op)), KM_SLEEP); 285 error = copyin(sgop->sessions, snop, sgop->count * 286 sizeof(struct session_n_op)); 287 if (error) { 288 goto mbail; 289 } 290 291 mutex_enter(&crypto_mtx); 292 fcr->mtime = fcr->atime; 293 mutex_exit(&crypto_mtx); 294 error = cryptodev_msession(fcr, snop, sgop->count); 295 if (error) { 296 goto mbail; 297 } 298 299 error = copyout(snop, sgop->sessions, sgop->count * 300 sizeof(struct session_n_op)); 301 mbail: 302 kmem_free(snop, sgop->count * sizeof(struct session_n_op)); 303 break; 304 case CIOCFSESSION: 305 mutex_enter(&crypto_mtx); 306 fcr->mtime = fcr->atime; 307 ses = *(u_int32_t *)data; 308 cse = csefind(fcr, ses); 309 if (cse == NULL) { 310 mutex_exit(&crypto_mtx); 311 return EINVAL; 312 } 313 csedelete(fcr, cse); 314 mutex_exit(&crypto_mtx); 315 error = csefree(cse); 316 break; 317 case CIOCNFSESSION: 318 mutex_enter(&crypto_mtx); 319 fcr->mtime = fcr->atime; 320 mutex_exit(&crypto_mtx); 321 sfop = (struct crypt_sfop *)data; 322 sesid = kmem_alloc((sfop->count * sizeof(u_int32_t)), 323 KM_SLEEP); 324 error = copyin(sfop->sesid, sesid, 325 (sfop->count * sizeof(u_int32_t))); 326 if (!error) { 327 error = cryptodev_msessionfin(fcr, sfop->count, sesid); 328 } 329 kmem_free(sesid, (sfop->count * sizeof(u_int32_t))); 330 break; 331 case CIOCCRYPT: 332 mutex_enter(&crypto_mtx); 333 fcr->mtime = fcr->atime; 334 cop = (struct crypt_op *)data; 335 cse = csefind(fcr, cop->ses); 336 mutex_exit(&crypto_mtx); 337 if (cse == NULL) { 338 DPRINTF(("csefind failed\n")); 339 return EINVAL; 340 } 341 error = cryptodev_op(cse, cop, curlwp); 342 DPRINTF(("cryptodev_op error = %d\n", error)); 343 break; 344 case CIOCNCRYPTM: 345 mutex_enter(&crypto_mtx); 346 fcr->mtime = fcr->atime; 347 mutex_exit(&crypto_mtx); 348 mop = (struct crypt_mop *)data; 349 cnop = kmem_alloc((mop->count * sizeof(struct crypt_n_op)), 350 KM_SLEEP); 351 error = copyin(mop->reqs, cnop, 352 (mop->count * sizeof(struct crypt_n_op))); 353 if(!error) { 354 error = cryptodev_mop(fcr, cnop, mop->count, curlwp); 355 if (!error) { 356 error = copyout(cnop, mop->reqs, 357 (mop->count * sizeof(struct crypt_n_op))); 358 } 359 } 360 kmem_free(cnop, (mop->count * sizeof(struct crypt_n_op))); 361 break; 362 case CIOCKEY: 363 error = cryptodev_key((struct crypt_kop *)data); 364 DPRINTF(("cryptodev_key error = %d\n", error)); 365 break; 366 case CIOCNFKEYM: 367 mutex_enter(&crypto_mtx); 368 fcr->mtime = fcr->atime; 369 mutex_exit(&crypto_mtx); 370 mkop = (struct crypt_mkop *)data; 371 knop = kmem_alloc((mkop->count * sizeof(struct crypt_n_kop)), 372 KM_SLEEP); 373 error = copyin(mkop->reqs, knop, 374 (mkop->count * sizeof(struct crypt_n_kop))); 375 if (!error) { 376 error = cryptodev_mkey(fcr, knop, mkop->count); 377 if (!error) 378 error = copyout(knop, mkop->reqs, 379 (mkop->count * sizeof(struct crypt_n_kop))); 380 } 381 kmem_free(knop, (mkop->count * sizeof(struct crypt_n_kop))); 382 break; 383 case CIOCASYMFEAT: 384 error = crypto_getfeat((int *)data); 385 break; 386 case CIOCNCRYPTRETM: 387 mutex_enter(&crypto_mtx); 388 fcr->mtime = fcr->atime; 389 mutex_exit(&crypto_mtx); 390 crypt_ret = (struct cryptret *)data; 391 count = crypt_ret->count; 392 crypt_res = kmem_alloc((count * sizeof(struct crypt_result)), 393 KM_SLEEP); 394 error = copyin(crypt_ret->results, crypt_res, 395 (count * sizeof(struct crypt_result))); 396 if (error) 397 goto reterr; 398 crypt_ret->count = cryptodev_getmstatus(fcr, crypt_res, 399 crypt_ret->count); 400 /* sanity check count */ 401 if (crypt_ret->count > count) { 402 printf("%s.%d: error returned count %zd > original " 403 " count %zd\n", 404 __FILE__, __LINE__, crypt_ret->count, count); 405 crypt_ret->count = count; 406 407 } 408 error = copyout(crypt_res, crypt_ret->results, 409 (crypt_ret->count * sizeof(struct crypt_result))); 410 reterr: 411 kmem_free(crypt_res, (count * sizeof(struct crypt_result))); 412 break; 413 case CIOCNCRYPTRET: 414 error = cryptodev_getstatus(fcr, (struct crypt_result *)data); 415 break; 416 default: 417 #ifdef COMPAT_50 418 /* Check for backward compatible commands */ 419 error = ocryptof_ioctl(fp, cmd, data); 420 #else 421 return EINVAL; 422 #endif 423 } 424 return error; 425 } 426 427 int 428 cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l) 429 { 430 struct cryptop *crp = NULL; 431 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 432 int error; 433 int iov_len = cop->len; 434 int flags=0; 435 int dst_len; /* copyout size */ 436 437 if (cop->len > 256*1024-4) 438 return E2BIG; 439 440 if (cse->txform) { 441 if (cop->len < cse->txform->blocksize 442 + (cop->iv ? 0 : cse->txform->ivsize) || 443 (cop->len - (cop->iv ? 0 : cse->txform->ivsize)) 444 % cse->txform->blocksize != 0) 445 return EINVAL; 446 } 447 448 DPRINTF(("cryptodev_op[%u]: iov_len %d\n", 449 CRYPTO_SESID2LID(cse->sid), iov_len)); 450 if ((cse->tcomp) && cop->dst_len) { 451 if (iov_len < cop->dst_len) { 452 /* Need larger iov to deal with decompress */ 453 iov_len = cop->dst_len; 454 } 455 DPRINTF(("cryptodev_op: iov_len -> %d for decompress\n", iov_len)); 456 } 457 458 (void)memset(&cse->uio, 0, sizeof(cse->uio)); 459 cse->uio.uio_iovcnt = 1; 460 cse->uio.uio_resid = 0; 461 cse->uio.uio_rw = UIO_WRITE; 462 cse->uio.uio_iov = cse->iovec; 463 UIO_SETUP_SYSSPACE(&cse->uio); 464 memset(&cse->iovec, 0, sizeof(cse->iovec)); 465 466 /* the iov needs to be big enough to handle the uncompressed 467 * data.... */ 468 cse->uio.uio_iov[0].iov_len = iov_len; 469 if (iov_len > 0) 470 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 471 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 472 DPRINTF(("cryptodev_op[%u]: uio.iov_base %p malloced %d bytes\n", 473 CRYPTO_SESID2LID(cse->sid), 474 cse->uio.uio_iov[0].iov_base, iov_len)); 475 476 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 477 if (crp == NULL) { 478 error = ENOMEM; 479 goto bail; 480 } 481 DPRINTF(("cryptodev_op[%u]: crp %p\n", 482 CRYPTO_SESID2LID(cse->sid), crp)); 483 484 /* crds are always ordered tcomp, thash, then txform */ 485 /* with optional missing links */ 486 487 /* XXX: If we're going to compress then hash or encrypt, we need 488 * to be able to pass on the new size of the data. 489 */ 490 491 if (cse->tcomp) { 492 crdc = crp->crp_desc; 493 } 494 495 if (cse->thash) { 496 crda = crdc ? crdc->crd_next : crp->crp_desc; 497 if (cse->txform && crda) 498 crde = crda->crd_next; 499 } else { 500 if (cse->txform) { 501 crde = crdc ? crdc->crd_next : crp->crp_desc; 502 } else if (!cse->tcomp) { 503 error = EINVAL; 504 goto bail; 505 } 506 } 507 508 DPRINTF(("ocf[%u]: iov_len %zu, cop->len %u\n", 509 CRYPTO_SESID2LID(cse->sid), 510 cse->uio.uio_iov[0].iov_len, 511 cop->len)); 512 513 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 514 { 515 printf("copyin failed %s %d \n", (char *)cop->src, error); 516 goto bail; 517 } 518 519 if (crdc) { 520 switch (cop->op) { 521 case COP_COMP: 522 crdc->crd_flags |= CRD_F_COMP; 523 break; 524 case COP_DECOMP: 525 crdc->crd_flags &= ~CRD_F_COMP; 526 break; 527 default: 528 break; 529 } 530 /* more data to follow? */ 531 if (cop->flags & COP_F_MORE) { 532 flags |= CRYPTO_F_MORE; 533 } 534 crdc->crd_len = cop->len; 535 crdc->crd_inject = 0; 536 537 crdc->crd_alg = cse->comp_alg; 538 crdc->crd_key = NULL; 539 crdc->crd_klen = 0; 540 DPRINTF(("cryptodev_op[%u]: crdc setup for comp_alg %d.\n", 541 CRYPTO_SESID2LID(cse->sid), crdc->crd_alg)); 542 } 543 544 if (crda) { 545 crda->crd_skip = 0; 546 crda->crd_len = cop->len; 547 crda->crd_inject = 0; /* ??? */ 548 549 crda->crd_alg = cse->mac; 550 crda->crd_key = cse->mackey; 551 crda->crd_klen = cse->mackeylen * 8; 552 DPRINTF(("cryptodev_op: crda setup for mac %d.\n", crda->crd_alg)); 553 } 554 555 if (crde) { 556 switch (cop->op) { 557 case COP_ENCRYPT: 558 crde->crd_flags |= CRD_F_ENCRYPT; 559 break; 560 case COP_DECRYPT: 561 crde->crd_flags &= ~CRD_F_ENCRYPT; 562 break; 563 default: 564 break; 565 } 566 crde->crd_len = cop->len; 567 crde->crd_inject = 0; 568 569 if (cse->cipher == CRYPTO_AES_GCM_16 && crda) 570 crda->crd_len = 0; 571 else if (cse->cipher == CRYPTO_AES_GMAC) 572 crde->crd_len = 0; 573 574 crde->crd_alg = cse->cipher; 575 crde->crd_key = cse->key; 576 crde->crd_klen = cse->keylen * 8; 577 DPRINTF(("cryptodev_op: crde setup for cipher %d.\n", crde->crd_alg)); 578 } 579 580 581 crp->crp_ilen = cop->len; 582 /* The reqest is flagged as CRYPTO_F_USER as long as it is running 583 * in the user IOCTL thread. This flag lets us skip using the retq for 584 * the request if it completes immediately. If the request ends up being 585 * delayed or is not completed immediately the flag is removed. 586 */ 587 crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | CRYPTO_F_USER | 588 flags; 589 crp->crp_buf = (void *)&cse->uio; 590 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 591 crp->crp_sid = cse->sid; 592 crp->crp_opaque = (void *)cse; 593 594 if (cop->iv) { 595 if (crde == NULL) { 596 error = EINVAL; 597 goto bail; 598 } 599 if (cse->txform->ivsize == 0) { 600 error = EINVAL; 601 goto bail; 602 } 603 if ((error = copyin(cop->iv, cse->tmp_iv, 604 cse->txform->ivsize))) 605 goto bail; 606 (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); 607 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 608 crde->crd_skip = 0; 609 } else if (crde) { 610 if (cse->txform->ivsize == 0) { 611 crde->crd_skip = 0; 612 } else { 613 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 614 crde->crd_flags |= CRD_F_IV_PRESENT; 615 crde->crd_skip = cse->txform->ivsize; 616 crde->crd_len -= cse->txform->ivsize; 617 } 618 } 619 620 if (cop->mac) { 621 if (crda == NULL) { 622 error = EINVAL; 623 goto bail; 624 } 625 crp->crp_mac=cse->tmp_mac; 626 } 627 628 cv_init(&crp->crp_cv, "crydev"); 629 630 /* 631 * XXX there was a comment here which said that we went to 632 * XXX splcrypto() but needed to only if CRYPTO_F_CBIMM, 633 * XXX disabled on NetBSD since 1.6O due to a race condition. 634 * XXX But crypto_dispatch went to splcrypto() itself! (And 635 * XXX now takes the crypto_mtx mutex itself). We do, however, 636 * XXX need to hold the mutex across the call to cv_wait(). 637 * XXX (should we arrange for crypto_dispatch to return to 638 * XXX us with it held? it seems quite ugly to do so.) 639 */ 640 #ifdef notyet 641 eagain: 642 #endif 643 error = crypto_dispatch(crp); 644 mutex_enter(&crypto_mtx); 645 646 /* 647 * If the request was going to be completed by the 648 * ioctl thread then it would have been done by now. 649 * Remove the F_USER flag so crypto_done() is not confused 650 * if the crypto device calls it after this point. 651 */ 652 crp->crp_flags &= ~(CRYPTO_F_USER); 653 654 switch (error) { 655 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 656 case EAGAIN: 657 mutex_exit(&crypto_mtx); 658 goto eagain; 659 break; 660 #endif 661 case 0: 662 break; 663 default: 664 DPRINTF(("cryptodev_op: not waiting, error.\n")); 665 mutex_exit(&crypto_mtx); 666 cv_destroy(&crp->crp_cv); 667 goto bail; 668 } 669 670 while (!(crp->crp_flags & CRYPTO_F_DONE)) { 671 DPRINTF(("cryptodev_op[%d]: sleeping on cv %p for crp %p\n", 672 (uint32_t)cse->sid, &crp->crp_cv, crp)); 673 cv_wait(&crp->crp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 674 } 675 if (crp->crp_flags & CRYPTO_F_ONRETQ) { 676 /* XXX this should never happen now with the CRYPTO_F_USER flag 677 * changes. 678 */ 679 DPRINTF(("cryptodev_op: DONE, not woken by cryptoret.\n")); 680 (void)crypto_ret_q_remove(crp); 681 } 682 mutex_exit(&crypto_mtx); 683 cv_destroy(&crp->crp_cv); 684 685 if (crp->crp_etype != 0) { 686 DPRINTF(("cryptodev_op: crp_etype %d\n", crp->crp_etype)); 687 error = crp->crp_etype; 688 goto bail; 689 } 690 691 if (cse->error) { 692 DPRINTF(("cryptodev_op: cse->error %d\n", cse->error)); 693 error = cse->error; 694 goto bail; 695 } 696 697 dst_len = crp->crp_ilen; 698 /* let the user know how much data was returned */ 699 if (crp->crp_olen) { 700 if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { 701 error = ENOSPC; 702 goto bail; 703 } 704 dst_len = cop->dst_len = crp->crp_olen; 705 } 706 707 if (cop->dst) { 708 DPRINTF(("cryptodev_op: copyout %d bytes to %p\n", dst_len, cop->dst)); 709 } 710 if (cop->dst && 711 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 712 { 713 DPRINTF(("cryptodev_op: copyout error %d\n", error)); 714 goto bail; 715 } 716 717 if (cop->mac && 718 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 719 DPRINTF(("cryptodev_op: mac copyout error %d\n", error)); 720 goto bail; 721 } 722 723 724 bail: 725 if (crp) { 726 crypto_freereq(crp); 727 } 728 if (cse->uio.uio_iov[0].iov_base) { 729 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 730 } 731 732 return error; 733 } 734 735 static int 736 cryptodev_cb(void *op) 737 { 738 struct cryptop *crp = (struct cryptop *) op; 739 struct csession *cse = (struct csession *)crp->crp_opaque; 740 int error = 0; 741 742 mutex_enter(&crypto_mtx); 743 cse->error = crp->crp_etype; 744 if (crp->crp_etype == EAGAIN) { 745 /* always drop mutex to call dispatch routine */ 746 mutex_exit(&crypto_mtx); 747 error = crypto_dispatch(crp); 748 mutex_enter(&crypto_mtx); 749 } 750 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 751 cv_signal(&crp->crp_cv); 752 } 753 mutex_exit(&crypto_mtx); 754 return 0; 755 } 756 757 static int 758 cryptodev_mcb(void *op) 759 { 760 struct cryptop *crp = (struct cryptop *) op; 761 struct csession *cse = (struct csession *)crp->crp_opaque; 762 int error=0; 763 764 mutex_enter(&crypto_mtx); 765 cse->error = crp->crp_etype; 766 if (crp->crp_etype == EAGAIN) { 767 mutex_exit(&crypto_mtx); 768 error = crypto_dispatch(crp); 769 mutex_enter(&crypto_mtx); 770 } 771 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 772 cv_signal(&crp->crp_cv); 773 } 774 775 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 776 selnotify(&crp->fcrp->sinfo, 0, 0); 777 mutex_exit(&crypto_mtx); 778 return 0; 779 } 780 781 static int 782 cryptodevkey_cb(void *op) 783 { 784 struct cryptkop *krp = op; 785 786 mutex_enter(&crypto_mtx); 787 cv_signal(&krp->krp_cv); 788 mutex_exit(&crypto_mtx); 789 return 0; 790 } 791 792 static int 793 cryptodevkey_mcb(void *op) 794 { 795 struct cryptkop *krp = op; 796 797 mutex_enter(&crypto_mtx); 798 cv_signal(&krp->krp_cv); 799 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 800 selnotify(&krp->fcrp->sinfo, 0, 0); 801 mutex_exit(&crypto_mtx); 802 return 0; 803 } 804 805 static int 806 cryptodev_key(struct crypt_kop *kop) 807 { 808 struct cryptkop *krp = NULL; 809 int error = EINVAL; 810 int in, out, size, i; 811 812 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 813 return EFBIG; 814 815 in = kop->crk_iparams; 816 out = kop->crk_oparams; 817 switch (kop->crk_op) { 818 case CRK_MOD_EXP: 819 if (in == 3 && out == 1) 820 break; 821 return EINVAL; 822 case CRK_MOD_EXP_CRT: 823 if (in == 6 && out == 1) 824 break; 825 return EINVAL; 826 case CRK_DSA_SIGN: 827 if (in == 5 && out == 2) 828 break; 829 return EINVAL; 830 case CRK_DSA_VERIFY: 831 if (in == 7 && out == 0) 832 break; 833 return EINVAL; 834 case CRK_DH_COMPUTE_KEY: 835 if (in == 3 && out == 1) 836 break; 837 return EINVAL; 838 case CRK_MOD_ADD: 839 if (in == 3 && out == 1) 840 break; 841 return EINVAL; 842 case CRK_MOD_ADDINV: 843 if (in == 2 && out == 1) 844 break; 845 return EINVAL; 846 case CRK_MOD_SUB: 847 if (in == 3 && out == 1) 848 break; 849 return EINVAL; 850 case CRK_MOD_MULT: 851 if (in == 3 && out == 1) 852 break; 853 return EINVAL; 854 case CRK_MOD_MULTINV: 855 if (in == 2 && out == 1) 856 break; 857 return EINVAL; 858 case CRK_MOD: 859 if (in == 2 && out == 1) 860 break; 861 return EINVAL; 862 default: 863 return EINVAL; 864 } 865 866 krp = pool_get(&cryptkop_pool, PR_WAITOK); 867 (void)memset(krp, 0, sizeof *krp); 868 cv_init(&krp->krp_cv, "crykdev"); 869 krp->krp_op = kop->crk_op; 870 krp->krp_status = kop->crk_status; 871 krp->krp_iparams = kop->crk_iparams; 872 krp->krp_oparams = kop->crk_oparams; 873 krp->krp_status = 0; 874 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 875 876 for (i = 0; i < CRK_MAXPARAM; i++) 877 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 878 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 879 size = (krp->krp_param[i].crp_nbits + 7) / 8; 880 if (size == 0) 881 continue; 882 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 883 if (i >= krp->krp_iparams) 884 continue; 885 error = copyin(kop->crk_param[i].crp_p, 886 krp->krp_param[i].crp_p, size); 887 if (error) 888 goto fail; 889 } 890 891 error = crypto_kdispatch(krp); 892 if (error != 0) { 893 goto fail; 894 } 895 896 mutex_enter(&crypto_mtx); 897 while (!(krp->krp_flags & CRYPTO_F_DONE)) { 898 cv_wait(&krp->krp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 899 } 900 if (krp->krp_flags & CRYPTO_F_ONRETQ) { 901 DPRINTF(("cryptodev_key: DONE early, not via cryptoret.\n")); 902 (void)crypto_ret_kq_remove(krp); 903 } 904 mutex_exit(&crypto_mtx); 905 906 if (krp->krp_status != 0) { 907 DPRINTF(("cryptodev_key: krp->krp_status 0x%08x\n", 908 krp->krp_status)); 909 error = krp->krp_status; 910 goto fail; 911 } 912 913 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 914 i++) { 915 size = (krp->krp_param[i].crp_nbits + 7) / 8; 916 if (size == 0) 917 continue; 918 error = copyout(krp->krp_param[i].crp_p, 919 kop->crk_param[i].crp_p, size); 920 if (error) { 921 DPRINTF(("cryptodev_key: copyout oparam %d failed, " 922 "error=%d\n", i-krp->krp_iparams, error)); 923 goto fail; 924 } 925 } 926 927 fail: 928 kop->crk_status = krp->krp_status; 929 for (i = 0; i < CRK_MAXPARAM; i++) { 930 struct crparam *kp = &(krp->krp_param[i]); 931 if (krp->krp_param[i].crp_p) { 932 size = (kp->crp_nbits + 7) / 8; 933 KASSERT(size > 0); 934 (void)memset(kp->crp_p, 0, size); 935 kmem_free(kp->crp_p, size); 936 } 937 } 938 cv_destroy(&krp->krp_cv); 939 pool_put(&cryptkop_pool, krp); 940 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 941 return error; 942 } 943 944 /* ARGSUSED */ 945 static int 946 cryptof_close(struct file *fp) 947 { 948 struct fcrypt *fcr = fp->f_fcrypt; 949 struct csession *cse; 950 951 mutex_enter(&crypto_mtx); 952 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 953 TAILQ_REMOVE(&fcr->csessions, cse, next); 954 mutex_exit(&crypto_mtx); 955 (void)csefree(cse); 956 mutex_enter(&crypto_mtx); 957 } 958 seldestroy(&fcr->sinfo); 959 fp->f_fcrypt = NULL; 960 crypto_refcount--; 961 mutex_exit(&crypto_mtx); 962 963 pool_put(&fcrpl, fcr); 964 return 0; 965 } 966 967 /* needed for compatibility module */ 968 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 969 { 970 return csefind(fcr, ses); 971 } 972 973 /* csefind: call with crypto_mtx held. */ 974 static struct csession * 975 csefind(struct fcrypt *fcr, u_int ses) 976 { 977 struct csession *cse, *cnext, *ret = NULL; 978 979 KASSERT(mutex_owned(&crypto_mtx)); 980 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 981 if (cse->ses == ses) 982 ret = cse; 983 984 return ret; 985 } 986 987 /* csedelete: call with crypto_mtx held. */ 988 static int 989 csedelete(struct fcrypt *fcr, struct csession *cse_del) 990 { 991 struct csession *cse, *cnext; 992 int ret = 0; 993 994 KASSERT(mutex_owned(&crypto_mtx)); 995 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 996 if (cse == cse_del) { 997 TAILQ_REMOVE(&fcr->csessions, cse, next); 998 ret = 1; 999 } 1000 } 1001 return ret; 1002 } 1003 1004 static struct csession * 1005 cseadd(struct fcrypt *fcr, struct csession *cse) 1006 { 1007 mutex_enter(&crypto_mtx); 1008 /* don't let session ID wrap! */ 1009 if (fcr->sesn + 1 == 0) return NULL; 1010 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 1011 cse->ses = fcr->sesn++; 1012 mutex_exit(&crypto_mtx); 1013 return cse; 1014 } 1015 1016 static struct csession * 1017 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 1018 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 1019 u_int32_t comp_alg, const struct enc_xform *txform, 1020 const struct auth_hash *thash, const struct comp_algo *tcomp) 1021 { 1022 struct csession *cse; 1023 1024 cse = pool_get(&csepl, PR_NOWAIT); 1025 if (cse == NULL) 1026 return NULL; 1027 cse->key = key; 1028 cse->keylen = keylen/8; 1029 cse->mackey = mackey; 1030 cse->mackeylen = mackeylen/8; 1031 cse->sid = sid; 1032 cse->cipher = cipher; 1033 cse->mac = mac; 1034 cse->comp_alg = comp_alg; 1035 cse->txform = txform; 1036 cse->thash = thash; 1037 cse->tcomp = tcomp; 1038 cse->error = 0; 1039 if (cseadd(fcr, cse)) 1040 return cse; 1041 else { 1042 pool_put(&csepl, cse); 1043 return NULL; 1044 } 1045 } 1046 1047 /* csefree: call with crypto_mtx held. */ 1048 static int 1049 csefree(struct csession *cse) 1050 { 1051 int error; 1052 1053 error = crypto_freesession(cse->sid); 1054 if (cse->key) 1055 free(cse->key, M_XDATA); 1056 if (cse->mackey) 1057 free(cse->mackey, M_XDATA); 1058 pool_put(&csepl, cse); 1059 return error; 1060 } 1061 1062 static int 1063 cryptoopen(dev_t dev, int flag, int mode, 1064 struct lwp *l) 1065 { 1066 file_t *fp; 1067 struct fcrypt *fcr; 1068 int fd, error; 1069 1070 if (crypto_usercrypto == 0) 1071 return ENXIO; 1072 1073 if ((error = fd_allocfile(&fp, &fd)) != 0) 1074 return error; 1075 1076 fcr = pool_get(&fcrpl, PR_WAITOK); 1077 getnanotime(&fcr->btime); 1078 fcr->atime = fcr->mtime = fcr->btime; 1079 mutex_enter(&crypto_mtx); 1080 TAILQ_INIT(&fcr->csessions); 1081 TAILQ_INIT(&fcr->crp_ret_mq); 1082 TAILQ_INIT(&fcr->crp_ret_mkq); 1083 selinit(&fcr->sinfo); 1084 /* 1085 * Don't ever return session 0, to allow detection of 1086 * failed creation attempts with multi-create ioctl. 1087 */ 1088 fcr->sesn = 1; 1089 fcr->requestid = 1; 1090 crypto_refcount++; 1091 mutex_exit(&crypto_mtx); 1092 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1093 } 1094 1095 static int 1096 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1097 { 1098 return EIO; 1099 } 1100 1101 static int 1102 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1103 { 1104 return EIO; 1105 } 1106 1107 int 1108 cryptoselect(dev_t dev, int rw, struct lwp *l) 1109 { 1110 return 0; 1111 } 1112 1113 /*static*/ 1114 struct cdevsw crypto_cdevsw = { 1115 DEVSW_MODULE_INIT 1116 .d_open = cryptoopen, 1117 .d_close = noclose, 1118 .d_read = cryptoread, 1119 .d_write = cryptowrite, 1120 .d_ioctl = noioctl, 1121 .d_stop = nostop, 1122 .d_tty = notty, 1123 .d_poll = cryptoselect /*nopoll*/, 1124 .d_mmap = nommap, 1125 .d_kqfilter = nokqfilter, 1126 .d_discard = nodiscard, 1127 .d_flag = D_OTHER 1128 }; 1129 1130 int 1131 cryptodev_mop(struct fcrypt *fcr, 1132 struct crypt_n_op * cnop, 1133 int count, struct lwp *l) 1134 { 1135 struct cryptop *crp = NULL; 1136 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1137 int req, error=0; 1138 struct csession *cse; 1139 int flags=0; 1140 int iov_len; 1141 1142 for (req = 0; req < count; req++) { 1143 mutex_enter(&crypto_mtx); 1144 cse = csefind(fcr, cnop[req].ses); 1145 if (cse == NULL) { 1146 DPRINTF(("csefind failed\n")); 1147 cnop[req].status = EINVAL; 1148 mutex_exit(&crypto_mtx); 1149 continue; 1150 } 1151 mutex_exit(&crypto_mtx); 1152 1153 if (cnop[req].len > 256*1024-4) { 1154 DPRINTF(("length failed\n")); 1155 cnop[req].status = EINVAL; 1156 continue; 1157 } 1158 if (cse->txform) { 1159 if (cnop[req].len < cse->txform->blocksize - 1160 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1161 (cnop[req].len - 1162 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1163 % cse->txform->blocksize) { 1164 cnop[req].status = EINVAL; 1165 continue; 1166 } 1167 } 1168 1169 crp = crypto_getreq((cse->txform != NULL) + 1170 (cse->thash != NULL) + 1171 (cse->tcomp != NULL)); 1172 if (crp == NULL) { 1173 cnop[req].status = ENOMEM; 1174 goto bail; 1175 } 1176 1177 iov_len = cnop[req].len; 1178 /* got a compression/decompression max size? */ 1179 if ((cse->tcomp) && cnop[req].dst_len) { 1180 if (iov_len < cnop[req].dst_len) { 1181 /* Need larger iov to deal with decompress */ 1182 iov_len = cnop[req].dst_len; 1183 } 1184 DPRINTF(("cryptodev_mop: iov_len -> %d for decompress\n", iov_len)); 1185 } 1186 1187 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1188 crp->uio.uio_iovcnt = 1; 1189 crp->uio.uio_resid = 0; 1190 crp->uio.uio_rw = UIO_WRITE; 1191 crp->uio.uio_iov = crp->iovec; 1192 UIO_SETUP_SYSSPACE(&crp->uio); 1193 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1194 crp->uio.uio_iov[0].iov_len = iov_len; 1195 DPRINTF(("cryptodev_mop: kmem_alloc(%d) for iov \n", iov_len)); 1196 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1197 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1198 1199 if (cse->tcomp) { 1200 crdc = crp->crp_desc; 1201 } 1202 1203 if (cse->thash) { 1204 crda = crdc ? crdc->crd_next : crp->crp_desc; 1205 if (cse->txform && crda) 1206 crde = crda->crd_next; 1207 } else { 1208 if (cse->txform) { 1209 crde = crdc ? crdc->crd_next : crp->crp_desc; 1210 } else if (!cse->tcomp) { 1211 error = EINVAL; 1212 goto bail; 1213 } 1214 } 1215 1216 if ((copyin(cnop[req].src, 1217 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1218 cnop[req].status = EINVAL; 1219 goto bail; 1220 } 1221 1222 if (crdc) { 1223 switch (cnop[req].op) { 1224 case COP_COMP: 1225 crdc->crd_flags |= CRD_F_COMP; 1226 break; 1227 case COP_DECOMP: 1228 crdc->crd_flags &= ~CRD_F_COMP; 1229 break; 1230 default: 1231 break; 1232 } 1233 /* more data to follow? */ 1234 if (cnop[req].flags & COP_F_MORE) { 1235 flags |= CRYPTO_F_MORE; 1236 } 1237 crdc->crd_len = cnop[req].len; 1238 crdc->crd_inject = 0; 1239 1240 crdc->crd_alg = cse->comp_alg; 1241 crdc->crd_key = NULL; 1242 crdc->crd_klen = 0; 1243 DPRINTF(("cryptodev_mop[%d]: crdc setup for comp_alg %d" 1244 " len %d.\n", 1245 (uint32_t)cse->sid, crdc->crd_alg, 1246 crdc->crd_len)); 1247 } 1248 1249 if (crda) { 1250 crda->crd_skip = 0; 1251 crda->crd_len = cnop[req].len; 1252 crda->crd_inject = 0; /* ??? */ 1253 1254 crda->crd_alg = cse->mac; 1255 crda->crd_key = cse->mackey; 1256 crda->crd_klen = cse->mackeylen * 8; 1257 } 1258 1259 if (crde) { 1260 if (cnop[req].op == COP_ENCRYPT) 1261 crde->crd_flags |= CRD_F_ENCRYPT; 1262 else 1263 crde->crd_flags &= ~CRD_F_ENCRYPT; 1264 crde->crd_len = cnop[req].len; 1265 crde->crd_inject = 0; 1266 1267 crde->crd_alg = cse->cipher; 1268 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1269 if(cnop[req].key && cnop[req].keylen) { 1270 crde->crd_key = malloc(cnop[req].keylen, 1271 M_XDATA, M_WAITOK); 1272 if((error = copyin(cnop[req].key, 1273 crde->crd_key, cnop[req].keylen))) { 1274 cnop[req].status = EINVAL; 1275 goto bail; 1276 } 1277 crde->crd_klen = cnop[req].keylen * 8; 1278 } else { ... } 1279 #endif 1280 crde->crd_key = cse->key; 1281 crde->crd_klen = cse->keylen * 8; 1282 } 1283 1284 crp->crp_ilen = cnop[req].len; 1285 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | 1286 (cnop[req].flags & COP_F_BATCH) | flags; 1287 crp->crp_buf = (void *)&crp->uio; 1288 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_mcb; 1289 crp->crp_sid = cse->sid; 1290 crp->crp_opaque = (void *)cse; 1291 crp->fcrp = fcr; 1292 crp->dst = cnop[req].dst; 1293 crp->len = cnop[req].len; /* input len, iov may be larger */ 1294 crp->mac = cnop[req].mac; 1295 DPRINTF(("cryptodev_mop: iov_base %p dst %p len %d mac %p\n", 1296 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1297 crp->mac)); 1298 1299 if (cnop[req].iv) { 1300 if (crde == NULL) { 1301 cnop[req].status = EINVAL; 1302 goto bail; 1303 } 1304 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1305 cnop[req].status = EINVAL; 1306 goto bail; 1307 } 1308 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1309 cse->txform->ivsize))) { 1310 cnop[req].status = EINVAL; 1311 goto bail; 1312 } 1313 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1314 cse->txform->ivsize); 1315 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1316 crde->crd_skip = 0; 1317 } else if (crde) { 1318 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1319 crde->crd_skip = 0; 1320 } else { 1321 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1322 crde->crd_flags |= CRD_F_IV_PRESENT; 1323 crde->crd_skip = cse->txform->ivsize; 1324 crde->crd_len -= cse->txform->ivsize; 1325 } 1326 } 1327 1328 if (cnop[req].mac) { 1329 if (crda == NULL) { 1330 cnop[req].status = EINVAL; 1331 goto bail; 1332 } 1333 crp->crp_mac=cse->tmp_mac; 1334 } 1335 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1336 crp->crp_reqid = cnop[req].reqid; 1337 crp->crp_usropaque = cnop[req].opaque; 1338 cv_init(&crp->crp_cv, "crydev"); 1339 #ifdef notyet 1340 eagain: 1341 #endif 1342 cnop[req].status = crypto_dispatch(crp); 1343 mutex_enter(&crypto_mtx); /* XXX why mutex? */ 1344 1345 switch (cnop[req].status) { 1346 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1347 case EAGAIN: 1348 mutex_exit(&crypto_mtx); 1349 goto eagain; 1350 break; 1351 #endif 1352 case 0: 1353 break; 1354 default: 1355 DPRINTF(("cryptodev_op: not waiting, error.\n")); 1356 mutex_exit(&crypto_mtx); 1357 cv_destroy(&crp->crp_cv); 1358 goto bail; 1359 } 1360 1361 mutex_exit(&crypto_mtx); 1362 cv_destroy(&crp->crp_cv); 1363 bail: 1364 if (cnop[req].status) { 1365 if (crp) { 1366 if (crp->uio.uio_iov[0].iov_base) { 1367 kmem_free(crp->uio.uio_iov[0].iov_base, 1368 crp->uio.uio_iov[0].iov_len); 1369 } 1370 crypto_freereq(crp); 1371 } 1372 error = 0; 1373 } 1374 } 1375 return error; 1376 } 1377 1378 static int 1379 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1380 { 1381 struct cryptkop *krp = NULL; 1382 int error = EINVAL; 1383 int in, out, size, i, req; 1384 1385 for (req = 0; req < count; req++) { 1386 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1387 return EFBIG; 1388 1389 in = kop[req].crk_iparams; 1390 out = kop[req].crk_oparams; 1391 switch (kop[req].crk_op) { 1392 case CRK_MOD_EXP: 1393 if (in == 3 && out == 1) 1394 break; 1395 kop[req].crk_status = EINVAL; 1396 continue; 1397 case CRK_MOD_EXP_CRT: 1398 if (in == 6 && out == 1) 1399 break; 1400 kop[req].crk_status = EINVAL; 1401 continue; 1402 case CRK_DSA_SIGN: 1403 if (in == 5 && out == 2) 1404 break; 1405 kop[req].crk_status = EINVAL; 1406 continue; 1407 case CRK_DSA_VERIFY: 1408 if (in == 7 && out == 0) 1409 break; 1410 kop[req].crk_status = EINVAL; 1411 continue; 1412 case CRK_DH_COMPUTE_KEY: 1413 if (in == 3 && out == 1) 1414 break; 1415 kop[req].crk_status = EINVAL; 1416 continue; 1417 case CRK_MOD_ADD: 1418 if (in == 3 && out == 1) 1419 break; 1420 kop[req].crk_status = EINVAL; 1421 continue; 1422 case CRK_MOD_ADDINV: 1423 if (in == 2 && out == 1) 1424 break; 1425 kop[req].crk_status = EINVAL; 1426 continue; 1427 case CRK_MOD_SUB: 1428 if (in == 3 && out == 1) 1429 break; 1430 kop[req].crk_status = EINVAL; 1431 continue; 1432 case CRK_MOD_MULT: 1433 if (in == 3 && out == 1) 1434 break; 1435 kop[req].crk_status = EINVAL; 1436 continue; 1437 case CRK_MOD_MULTINV: 1438 if (in == 2 && out == 1) 1439 break; 1440 kop[req].crk_status = EINVAL; 1441 continue; 1442 case CRK_MOD: 1443 if (in == 2 && out == 1) 1444 break; 1445 kop[req].crk_status = EINVAL; 1446 continue; 1447 default: 1448 kop[req].crk_status = EINVAL; 1449 continue; 1450 } 1451 1452 krp = pool_get(&cryptkop_pool, PR_WAITOK); 1453 (void)memset(krp, 0, sizeof *krp); 1454 cv_init(&krp->krp_cv, "crykdev"); 1455 krp->krp_op = kop[req].crk_op; 1456 krp->krp_status = kop[req].crk_status; 1457 krp->krp_iparams = kop[req].crk_iparams; 1458 krp->krp_oparams = kop[req].crk_oparams; 1459 krp->krp_status = 0; 1460 krp->krp_callback = 1461 (int (*) (struct cryptkop *)) cryptodevkey_mcb; 1462 (void)memcpy(krp->crk_param, kop[req].crk_param, 1463 sizeof(kop[req].crk_param)); 1464 1465 krp->krp_flags = CRYPTO_F_CBIMM; 1466 1467 for (i = 0; i < CRK_MAXPARAM; i++) 1468 krp->krp_param[i].crp_nbits = 1469 kop[req].crk_param[i].crp_nbits; 1470 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1471 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1472 if (size == 0) 1473 continue; 1474 krp->krp_param[i].crp_p = 1475 kmem_alloc(size, KM_SLEEP); 1476 if (i >= krp->krp_iparams) 1477 continue; 1478 kop[req].crk_status = 1479 copyin(kop[req].crk_param[i].crp_p, 1480 krp->krp_param[i].crp_p, size); 1481 if (kop[req].crk_status) 1482 goto fail; 1483 } 1484 krp->fcrp = fcr; 1485 1486 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1487 krp->krp_reqid = kop[req].crk_reqid; 1488 krp->krp_usropaque = kop[req].crk_opaque; 1489 1490 kop[req].crk_status = crypto_kdispatch(krp); 1491 if (kop[req].crk_status != 0) { 1492 goto fail; 1493 } 1494 1495 fail: 1496 if(kop[req].crk_status) { 1497 if (krp) { 1498 kop[req].crk_status = krp->krp_status; 1499 for (i = 0; i < CRK_MAXPARAM; i++) { 1500 struct crparam *kp = 1501 &(krp->krp_param[i]); 1502 if (kp->crp_p) { 1503 size = (kp->crp_nbits + 7) / 8; 1504 KASSERT(size > 0); 1505 memset(kp->crp_p, 0, size); 1506 kmem_free(kp->crp_p, size); 1507 } 1508 } 1509 cv_destroy(&krp->krp_cv); 1510 pool_put(&cryptkop_pool, krp); 1511 } 1512 } 1513 error = 0; 1514 } 1515 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 1516 return error; 1517 } 1518 1519 int 1520 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1521 { 1522 struct cryptoini cria, crie; 1523 struct cryptoini cric; /* compressor */ 1524 struct cryptoini *crihead = NULL; 1525 const struct enc_xform *txform = NULL; 1526 const struct auth_hash *thash = NULL; 1527 const struct comp_algo *tcomp = NULL; 1528 struct csession *cse; 1529 u_int64_t sid; 1530 int error = 0; 1531 1532 DPRINTF(("cryptodev_session() cipher=%d, mac=%d\n", sop->cipher, sop->mac)); 1533 1534 /* XXX there must be a way to not embed the list of xforms here */ 1535 switch (sop->cipher) { 1536 case 0: 1537 break; 1538 case CRYPTO_DES_CBC: 1539 txform = &enc_xform_des; 1540 break; 1541 case CRYPTO_3DES_CBC: 1542 txform = &enc_xform_3des; 1543 break; 1544 case CRYPTO_BLF_CBC: 1545 txform = &enc_xform_blf; 1546 break; 1547 case CRYPTO_CAST_CBC: 1548 txform = &enc_xform_cast5; 1549 break; 1550 case CRYPTO_SKIPJACK_CBC: 1551 txform = &enc_xform_skipjack; 1552 break; 1553 case CRYPTO_AES_CBC: 1554 txform = &enc_xform_rijndael128; 1555 break; 1556 case CRYPTO_CAMELLIA_CBC: 1557 txform = &enc_xform_camellia; 1558 break; 1559 case CRYPTO_AES_CTR: 1560 txform = &enc_xform_aes_ctr; 1561 break; 1562 case CRYPTO_AES_GCM_16: 1563 txform = &enc_xform_aes_gcm; 1564 break; 1565 case CRYPTO_AES_GMAC: 1566 txform = &enc_xform_aes_gmac; 1567 break; 1568 case CRYPTO_NULL_CBC: 1569 txform = &enc_xform_null; 1570 break; 1571 case CRYPTO_ARC4: 1572 txform = &enc_xform_arc4; 1573 break; 1574 default: 1575 DPRINTF(("Invalid cipher %d\n", sop->cipher)); 1576 return EINVAL; 1577 } 1578 1579 switch (sop->comp_alg) { 1580 case 0: 1581 break; 1582 case CRYPTO_DEFLATE_COMP: 1583 tcomp = &comp_algo_deflate; 1584 break; 1585 case CRYPTO_GZIP_COMP: 1586 tcomp = &comp_algo_gzip; 1587 DPRINTF(("cryptodev_session() tcomp for GZIP\n")); 1588 break; 1589 default: 1590 DPRINTF(("Invalid compression alg %d\n", sop->comp_alg)); 1591 return EINVAL; 1592 } 1593 1594 switch (sop->mac) { 1595 case 0: 1596 break; 1597 case CRYPTO_MD5_HMAC: 1598 thash = &auth_hash_hmac_md5; 1599 break; 1600 case CRYPTO_SHA1_HMAC: 1601 thash = &auth_hash_hmac_sha1; 1602 break; 1603 case CRYPTO_MD5_HMAC_96: 1604 thash = &auth_hash_hmac_md5_96; 1605 break; 1606 case CRYPTO_SHA1_HMAC_96: 1607 thash = &auth_hash_hmac_sha1_96; 1608 break; 1609 case CRYPTO_SHA2_HMAC: 1610 /* XXX switching on key length seems questionable */ 1611 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1612 thash = &auth_hash_hmac_sha2_256; 1613 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1614 thash = &auth_hash_hmac_sha2_384; 1615 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1616 thash = &auth_hash_hmac_sha2_512; 1617 } else { 1618 DPRINTF(("Invalid mackeylen %d\n", sop->mackeylen)); 1619 return EINVAL; 1620 } 1621 break; 1622 case CRYPTO_RIPEMD160_HMAC: 1623 thash = &auth_hash_hmac_ripemd_160; 1624 break; 1625 case CRYPTO_RIPEMD160_HMAC_96: 1626 thash = &auth_hash_hmac_ripemd_160_96; 1627 break; 1628 case CRYPTO_MD5: 1629 thash = &auth_hash_md5; 1630 break; 1631 case CRYPTO_SHA1: 1632 thash = &auth_hash_sha1; 1633 break; 1634 case CRYPTO_AES_XCBC_MAC_96: 1635 thash = &auth_hash_aes_xcbc_mac_96; 1636 break; 1637 case CRYPTO_AES_128_GMAC: 1638 thash = &auth_hash_gmac_aes_128; 1639 break; 1640 case CRYPTO_AES_192_GMAC: 1641 thash = &auth_hash_gmac_aes_192; 1642 break; 1643 case CRYPTO_AES_256_GMAC: 1644 thash = &auth_hash_gmac_aes_256; 1645 break; 1646 case CRYPTO_NULL_HMAC: 1647 thash = &auth_hash_null; 1648 break; 1649 default: 1650 DPRINTF(("Invalid mac %d\n", sop->mac)); 1651 return EINVAL; 1652 } 1653 1654 memset(&crie, 0, sizeof(crie)); 1655 memset(&cria, 0, sizeof(cria)); 1656 memset(&cric, 0, sizeof(cric)); 1657 1658 if (tcomp) { 1659 cric.cri_alg = tcomp->type; 1660 cric.cri_klen = 0; 1661 DPRINTF(("tcomp->type = %d\n", tcomp->type)); 1662 1663 crihead = &cric; 1664 if (txform) { 1665 cric.cri_next = &crie; 1666 } else if (thash) { 1667 cric.cri_next = &cria; 1668 } 1669 } 1670 1671 if (txform) { 1672 crie.cri_alg = txform->type; 1673 crie.cri_klen = sop->keylen * 8; 1674 if (sop->keylen > txform->maxkey || 1675 sop->keylen < txform->minkey) { 1676 DPRINTF(("keylen %d not in [%d,%d]\n", 1677 sop->keylen, txform->minkey, txform->maxkey)); 1678 error = EINVAL; 1679 goto bail; 1680 } 1681 1682 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1683 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1684 goto bail; 1685 if (!crihead) { 1686 crihead = &crie; 1687 } 1688 if (thash) 1689 crie.cri_next = &cria; 1690 } 1691 1692 if (thash) { 1693 cria.cri_alg = thash->type; 1694 cria.cri_klen = sop->mackeylen * 8; 1695 if (sop->mackeylen != thash->keysize) { 1696 DPRINTF(("mackeylen %d != keysize %d\n", 1697 sop->mackeylen, thash->keysize)); 1698 error = EINVAL; 1699 goto bail; 1700 } 1701 if (cria.cri_klen) { 1702 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1703 M_WAITOK); 1704 if ((error = copyin(sop->mackey, cria.cri_key, 1705 cria.cri_klen / 8))) { 1706 goto bail; 1707 } 1708 } 1709 if (!crihead) { 1710 crihead = &cria; 1711 } 1712 } 1713 1714 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1715 if (!error) { 1716 DPRINTF(("cryptodev_session: got session %d\n", (uint32_t)sid)); 1717 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1718 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1719 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1720 if (cse != NULL) { 1721 sop->ses = cse->ses; 1722 } else { 1723 DPRINTF(("csecreate failed\n")); 1724 crypto_freesession(sid); 1725 error = EINVAL; 1726 } 1727 } else { 1728 DPRINTF(("SIOCSESSION violates kernel parameters %d\n", 1729 error)); 1730 } 1731 bail: 1732 if (error) { 1733 if (crie.cri_key) { 1734 memset(crie.cri_key, 0, crie.cri_klen / 8); 1735 free(crie.cri_key, M_XDATA); 1736 } 1737 if (cria.cri_key) { 1738 memset(cria.cri_key, 0, cria.cri_klen / 8); 1739 free(cria.cri_key, M_XDATA); 1740 } 1741 } 1742 return error; 1743 } 1744 1745 int 1746 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1747 int count) 1748 { 1749 int i; 1750 1751 for (i = 0; i < count; i++, sn_ops++) { 1752 struct session_op s_op; 1753 s_op.cipher = sn_ops->cipher; 1754 s_op.mac = sn_ops->mac; 1755 s_op.keylen = sn_ops->keylen; 1756 s_op.key = sn_ops->key; 1757 s_op.mackeylen = sn_ops->mackeylen; 1758 s_op.mackey = sn_ops->mackey; 1759 1760 sn_ops->status = cryptodev_session(fcr, &s_op); 1761 sn_ops->ses = s_op.ses; 1762 } 1763 1764 return 0; 1765 } 1766 1767 static int 1768 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1769 { 1770 struct csession *cse; 1771 int req, error = 0; 1772 1773 mutex_enter(&crypto_mtx); 1774 for(req = 0; req < count; req++) { 1775 cse = csefind(fcr, sesid[req]); 1776 if (cse == NULL) 1777 continue; 1778 csedelete(fcr, cse); 1779 mutex_exit(&crypto_mtx); 1780 error = csefree(cse); 1781 mutex_enter(&crypto_mtx); 1782 } 1783 mutex_exit(&crypto_mtx); 1784 return error; 1785 } 1786 1787 /* 1788 * collect as many completed requests as are availble, or count completed 1789 * requests whichever is less. 1790 * return the number of requests. 1791 */ 1792 static int 1793 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1794 int count) 1795 { 1796 struct cryptop *crp = NULL; 1797 struct cryptkop *krp = NULL; 1798 struct csession *cse; 1799 int i, size, req = 0; 1800 int completed=0; 1801 1802 /* On queue so nobody else can grab them 1803 * and copyout can be delayed-- no locking */ 1804 TAILQ_HEAD(, cryptop) crp_delfree_q = 1805 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1806 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1807 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1808 1809 /* at this point we do not know which response user is requesting for 1810 * (symmetric or asymmetric) so we copyout one from each i.e if the 1811 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1812 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1813 1814 /* pull off a list of requests while protected from changes */ 1815 mutex_enter(&crypto_mtx); 1816 while (req < count) { 1817 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1818 if (crp) { 1819 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1820 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1821 cse = (struct csession *)crp->crp_opaque; 1822 1823 /* see if the session is still valid */ 1824 cse = csefind(fcr, cse->ses); 1825 if (cse != NULL) { 1826 crypt_res[req].status = 0; 1827 } else { 1828 DPRINTF(("csefind failed\n")); 1829 crypt_res[req].status = EINVAL; 1830 } 1831 req++; 1832 } 1833 if(req < count) { 1834 crypt_res[req].status = 0; 1835 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1836 if (krp) { 1837 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1838 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1839 req++; 1840 } 1841 } 1842 } 1843 mutex_exit(&crypto_mtx); 1844 1845 /* now do all the work outside the mutex */ 1846 for(req=0; req < count ;) { 1847 crp = TAILQ_FIRST(&crp_delfree_q); 1848 if (crp) { 1849 if (crypt_res[req].status != 0) { 1850 /* csefind failed during collection */ 1851 goto bail; 1852 } 1853 cse = (struct csession *)crp->crp_opaque; 1854 crypt_res[req].reqid = crp->crp_reqid; 1855 crypt_res[req].opaque = crp->crp_usropaque; 1856 completed++; 1857 1858 if (crp->crp_etype != 0) { 1859 crypt_res[req].status = crp->crp_etype; 1860 goto bail; 1861 } 1862 1863 if (cse->error) { 1864 crypt_res[req].status = cse->error; 1865 goto bail; 1866 } 1867 1868 if (crp->dst && (crypt_res[req].status = 1869 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1870 crp->len))) 1871 goto bail; 1872 1873 if (crp->mac && (crypt_res[req].status = 1874 copyout(crp->crp_mac, crp->mac, 1875 cse->thash->authsize))) 1876 goto bail; 1877 1878 bail: 1879 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1880 kmem_free(crp->uio.uio_iov[0].iov_base, 1881 crp->uio.uio_iov[0].iov_len); 1882 crypto_freereq(crp); 1883 req++; 1884 } 1885 1886 if (req < count) { 1887 krp = TAILQ_FIRST(&krp_delfree_q); 1888 if (krp) { 1889 crypt_res[req].reqid = krp->krp_reqid; 1890 crypt_res[req].opaque = krp->krp_usropaque; 1891 completed++; 1892 if (krp->krp_status != 0) { 1893 DPRINTF(("cryptodev_key: " 1894 "krp->krp_status 0x%08x\n", 1895 krp->krp_status)); 1896 crypt_res[req].status = krp->krp_status; 1897 goto fail; 1898 } 1899 1900 for (i = krp->krp_iparams; i < krp->krp_iparams 1901 + krp->krp_oparams; i++) { 1902 size = (krp->krp_param[i].crp_nbits 1903 + 7) / 8; 1904 if (size == 0) 1905 continue; 1906 crypt_res[req].status = copyout 1907 (krp->krp_param[i].crp_p, 1908 krp->crk_param[i].crp_p, size); 1909 if (crypt_res[req].status) { 1910 DPRINTF(("cryptodev_key: " 1911 "copyout oparam %d failed, " 1912 "error=%d\n", 1913 i - krp->krp_iparams, 1914 crypt_res[req].status)); 1915 goto fail; 1916 } 1917 } 1918 fail: 1919 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1920 /* not sure what to do for this */ 1921 /* kop[req].crk_status = krp->krp_status; */ 1922 for (i = 0; i < CRK_MAXPARAM; i++) { 1923 struct crparam *kp = &(krp->krp_param[i]); 1924 if (kp->crp_p) { 1925 size = (kp->crp_nbits + 7) / 8; 1926 KASSERT(size > 0); 1927 (void)memset(kp->crp_p, 0, size); 1928 kmem_free(kp->crp_p, size); 1929 } 1930 } 1931 cv_destroy(&krp->krp_cv); 1932 pool_put(&cryptkop_pool, krp); 1933 req++; 1934 } 1935 } 1936 } 1937 1938 return completed; 1939 } 1940 1941 static int 1942 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1943 { 1944 struct cryptop *crp = NULL, *cnext; 1945 struct cryptkop *krp = NULL, *knext; 1946 struct csession *cse; 1947 int i, size, req = 0; 1948 1949 mutex_enter(&crypto_mtx); 1950 /* Here we dont know for which request the user is requesting the 1951 * response so checking in both the queues */ 1952 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1953 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1954 cse = (struct csession *)crp->crp_opaque; 1955 crypt_res->opaque = crp->crp_usropaque; 1956 cse = csefind(fcr, cse->ses); 1957 if (cse == NULL) { 1958 DPRINTF(("csefind failed\n")); 1959 crypt_res->status = EINVAL; 1960 goto bail; 1961 } 1962 1963 if (crp->crp_etype != 0) { 1964 crypt_res->status = crp->crp_etype; 1965 goto bail; 1966 } 1967 1968 if (cse->error) { 1969 crypt_res->status = cse->error; 1970 goto bail; 1971 } 1972 1973 if (crp->dst && (crypt_res->status = 1974 copyout(crp->uio.uio_iov[0].iov_base, 1975 crp->dst, crp->len))) 1976 goto bail; 1977 1978 if (crp->mac && (crypt_res->status = 1979 copyout(crp->crp_mac, crp->mac, 1980 cse->thash->authsize))) 1981 goto bail; 1982 bail: 1983 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1984 1985 mutex_exit(&crypto_mtx); 1986 crypto_freereq(crp); 1987 return 0; 1988 } 1989 } 1990 1991 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1992 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1993 crypt_res[req].opaque = krp->krp_usropaque; 1994 if (krp->krp_status != 0) { 1995 DPRINTF(("cryptodev_key: " 1996 "krp->krp_status 0x%08x\n", 1997 krp->krp_status)); 1998 crypt_res[req].status = krp->krp_status; 1999 goto fail; 2000 } 2001 2002 for (i = krp->krp_iparams; i < krp->krp_iparams + 2003 krp->krp_oparams; i++) { 2004 size = (krp->krp_param[i].crp_nbits + 7) / 8; 2005 if (size == 0) 2006 continue; 2007 crypt_res[req].status = copyout( 2008 krp->krp_param[i].crp_p, 2009 krp->crk_param[i].crp_p, size); 2010 if (crypt_res[req].status) { 2011 DPRINTF(("cryptodev_key: copyout oparam" 2012 "%d failed, error=%d\n", 2013 i - krp->krp_iparams, 2014 crypt_res[req].status)); 2015 goto fail; 2016 } 2017 } 2018 fail: 2019 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 2020 mutex_exit(&crypto_mtx); 2021 /* not sure what to do for this */ 2022 /* kop[req].crk_status = krp->krp_status; */ 2023 for (i = 0; i < CRK_MAXPARAM; i++) { 2024 struct crparam *kp = &(krp->krp_param[i]); 2025 if (kp->crp_p) { 2026 size = (kp->crp_nbits + 7) / 8; 2027 KASSERT(size > 0); 2028 memset(kp->crp_p, 0, size); 2029 kmem_free(kp->crp_p, size); 2030 } 2031 } 2032 cv_destroy(&krp->krp_cv); 2033 pool_put(&cryptkop_pool, krp); 2034 return 0; 2035 } 2036 } 2037 mutex_exit(&crypto_mtx); 2038 return EINPROGRESS; 2039 } 2040 2041 static int 2042 cryptof_stat(struct file *fp, struct stat *st) 2043 { 2044 struct fcrypt *fcr = fp->f_fcrypt; 2045 2046 (void)memset(st, 0, sizeof(*st)); 2047 2048 mutex_enter(&crypto_mtx); 2049 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2050 st->st_atimespec = fcr->atime; 2051 st->st_mtimespec = fcr->mtime; 2052 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2053 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2054 st->st_gid = kauth_cred_getegid(fp->f_cred); 2055 mutex_exit(&crypto_mtx); 2056 2057 return 0; 2058 } 2059 2060 static int 2061 cryptof_poll(struct file *fp, int events) 2062 { 2063 struct fcrypt *fcr = fp->f_fcrypt; 2064 int revents = 0; 2065 2066 if (!(events & (POLLIN | POLLRDNORM))) { 2067 /* only support read and POLLIN */ 2068 return 0; 2069 } 2070 2071 mutex_enter(&crypto_mtx); 2072 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2073 /* no completed requests pending, save the poll for later */ 2074 selrecord(curlwp, &fcr->sinfo); 2075 } else { 2076 /* let the app(s) know that there are completed requests */ 2077 revents = events & (POLLIN | POLLRDNORM); 2078 } 2079 mutex_exit(&crypto_mtx); 2080 2081 return revents; 2082 } 2083 2084 /* 2085 * Pseudo-device initialization routine for /dev/crypto 2086 */ 2087 void 2088 cryptoattach(int num) 2089 { 2090 crypto_init(); 2091 2092 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2093 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2094 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2095 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2096 2097 /* 2098 * Preallocate space for 64 users, with 5 sessions each. 2099 * (consider that a TLS protocol session requires at least 2100 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2101 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2102 * consuming one session here for each algorithm. 2103 */ 2104 pool_prime(&fcrpl, 64); 2105 pool_prime(&csepl, 64 * 5); 2106 } 2107 2108 void crypto_attach(device_t, device_t, void *); 2109 2110 void 2111 crypto_attach(device_t parent, device_t self, void * opaque) 2112 { 2113 2114 cryptoattach(0); 2115 } 2116 2117 int crypto_detach(device_t, int); 2118 2119 int 2120 crypto_detach(device_t self, int num) 2121 { 2122 2123 pool_destroy(&fcrpl); 2124 pool_destroy(&csepl); 2125 2126 return 0; 2127 } 2128 2129 int crypto_match(device_t, cfdata_t, void *); 2130 2131 int 2132 crypto_match(device_t parent, cfdata_t data, void *opaque) 2133 { 2134 2135 return 1; 2136 } 2137 2138 MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto"); 2139 2140 CFDRIVER_DECL(crypto, DV_DULL, NULL); 2141 2142 CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, 2143 NULL, NULL, NULL); 2144 2145 #ifdef _MODULE 2146 static int cryptoloc[] = { -1, -1 }; 2147 2148 static struct cfdata crypto_cfdata[] = { 2149 { 2150 .cf_name = "crypto", 2151 .cf_atname = "crypto", 2152 .cf_unit = 0, 2153 .cf_fstate = 0, 2154 .cf_loc = cryptoloc, 2155 .cf_flags = 0, 2156 .cf_pspec = NULL, 2157 }, 2158 { NULL, NULL, 0, 0, NULL, 0, NULL } 2159 }; 2160 #endif 2161 2162 static int 2163 crypto_modcmd(modcmd_t cmd, void *arg) 2164 { 2165 int error = 0; 2166 #ifdef _MODULE 2167 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 2168 #endif 2169 2170 switch (cmd) { 2171 case MODULE_CMD_INIT: 2172 #ifdef _MODULE 2173 2174 error = config_cfdriver_attach(&crypto_cd); 2175 if (error) { 2176 return error; 2177 } 2178 2179 error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); 2180 if (error) { 2181 config_cfdriver_detach(&crypto_cd); 2182 aprint_error("%s: unable to register cfattach\n", 2183 crypto_cd.cd_name); 2184 2185 return error; 2186 } 2187 2188 error = config_cfdata_attach(crypto_cfdata, 1); 2189 if (error) { 2190 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2191 config_cfdriver_detach(&crypto_cd); 2192 aprint_error("%s: unable to register cfdata\n", 2193 crypto_cd.cd_name); 2194 2195 return error; 2196 } 2197 2198 error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, 2199 &crypto_cdevsw, &cmajor); 2200 if (error) { 2201 error = config_cfdata_detach(crypto_cfdata); 2202 if (error) { 2203 return error; 2204 } 2205 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2206 config_cfdriver_detach(&crypto_cd); 2207 aprint_error("%s: unable to register devsw\n", 2208 crypto_cd.cd_name); 2209 2210 return error; 2211 } 2212 2213 (void)config_attach_pseudo(crypto_cfdata); 2214 #endif 2215 2216 return error; 2217 case MODULE_CMD_FINI: 2218 #ifdef _MODULE 2219 error = config_cfdata_detach(crypto_cfdata); 2220 if (error) { 2221 return error; 2222 } 2223 2224 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2225 config_cfdriver_detach(&crypto_cd); 2226 devsw_detach(NULL, &crypto_cdevsw); 2227 #endif 2228 2229 return error; 2230 #ifdef _MODULE 2231 case MODULE_CMD_AUTOUNLOAD: 2232 #if 0 /* 2233 * XXX Completely disable auto-unload for now, since there is still 2234 * XXX a (small) window where in-module ref-counting doesn't help 2235 */ 2236 if (crypto_refcount != 0) 2237 #endif 2238 return EBUSY; 2239 /* FALLTHROUGH */ 2240 #endif 2241 default: 2242 return ENOTTY; 2243 } 2244 } 2245
Indexes created Thu Oct 02 14:10:14 GMT 2025