cryptodev.c revision 1.90
1 /* $NetBSD: cryptodev.c,v 1.90 2017/05/17 06:33:04 knakahara 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 1.90 2017/05/17 06:33:04 knakahara 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 90 #ifdef _KERNEL_OPT 91 #include "opt_ocf.h" 92 #include "opt_compat_netbsd.h" 93 #endif 94 95 #include <opencrypto/cryptodev.h> 96 #include <opencrypto/cryptodev_internal.h> 97 #include <opencrypto/xform.h> 98 99 #include "ioconf.h" 100 101 kmutex_t crypto_mtx; 102 103 struct csession { 104 TAILQ_ENTRY(csession) next; 105 u_int64_t sid; 106 u_int32_t ses; 107 108 u_int32_t cipher; /* note: shares name space in crd_alg */ 109 const struct enc_xform *txform; 110 u_int32_t mac; /* note: shares name space in crd_alg */ 111 const struct auth_hash *thash; 112 u_int32_t comp_alg; /* note: shares name space in crd_alg */ 113 const struct comp_algo *tcomp; 114 115 void * key; 116 int keylen; 117 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 118 119 void * mackey; 120 int mackeylen; 121 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 122 123 struct iovec iovec[1]; /* user requests never have more */ 124 struct uio uio; 125 int error; 126 }; 127 128 struct fcrypt { 129 TAILQ_HEAD(csessionlist, csession) csessions; 130 TAILQ_HEAD(crprethead, cryptop) crp_ret_mq; 131 TAILQ_HEAD(krprethead, cryptkop) crp_ret_mkq; 132 int sesn; 133 struct selinfo sinfo; 134 u_int32_t requestid; 135 struct timespec atime; 136 struct timespec mtime; 137 struct timespec btime; 138 }; 139 140 /* For our fixed-size allocations */ 141 static struct pool fcrpl; 142 static struct pool csepl; 143 144 /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ 145 static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l); 146 static int cryptoread(dev_t dev, struct uio *uio, int ioflag); 147 static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); 148 static int cryptoselect(dev_t dev, int rw, struct lwp *l); 149 150 static int crypto_refcount = 0; /* Prevent detaching while in use */ 151 152 /* Declaration of cloned-device (per-ctxt) entrypoints */ 153 static int cryptof_read(struct file *, off_t *, struct uio *, 154 kauth_cred_t, int); 155 static int cryptof_write(struct file *, off_t *, struct uio *, 156 kauth_cred_t, int); 157 static int cryptof_ioctl(struct file *, u_long, void *); 158 static int cryptof_close(struct file *); 159 static int cryptof_poll(struct file *, int); 160 static int cryptof_stat(struct file *, struct stat *); 161 162 static const struct fileops cryptofops = { 163 .fo_read = cryptof_read, 164 .fo_write = cryptof_write, 165 .fo_ioctl = cryptof_ioctl, 166 .fo_fcntl = fnullop_fcntl, 167 .fo_poll = cryptof_poll, 168 .fo_stat = cryptof_stat, 169 .fo_close = cryptof_close, 170 .fo_kqfilter = fnullop_kqfilter, 171 .fo_restart = fnullop_restart, 172 }; 173 174 struct csession *cryptodev_csefind(struct fcrypt *, u_int); 175 static struct csession *csefind(struct fcrypt *, u_int); 176 static int csedelete(struct fcrypt *, struct csession *); 177 static struct csession *cseadd(struct fcrypt *, struct csession *); 178 static struct csession *csecreate(struct fcrypt *, u_int64_t, void *, 179 u_int64_t, void *, u_int64_t, u_int32_t, u_int32_t, u_int32_t, 180 const struct enc_xform *, const struct auth_hash *, 181 const struct comp_algo *); 182 static int csefree(struct csession *); 183 184 static int cryptodev_key(struct crypt_kop *); 185 static int cryptodev_mkey(struct fcrypt *, struct crypt_n_kop *, int); 186 static int cryptodev_msessionfin(struct fcrypt *, int, u_int32_t *); 187 188 static int cryptodev_cb(void *); 189 static int cryptodevkey_cb(void *); 190 191 static int cryptodev_mcb(void *); 192 static int cryptodevkey_mcb(void *); 193 194 static int cryptodev_getmstatus(struct fcrypt *, struct crypt_result *, 195 int); 196 static int cryptodev_getstatus(struct fcrypt *, struct crypt_result *); 197 198 #ifdef COMPAT_50 199 extern int ocryptof_ioctl(struct file *, u_long, void *); 200 #endif 201 202 /* 203 * sysctl-able control variables for /dev/crypto now defined in crypto.c: 204 * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. 205 */ 206 207 /* ARGSUSED */ 208 int 209 cryptof_read(file_t *fp, off_t *poff, 210 struct uio *uio, kauth_cred_t cred, int flags) 211 { 212 return EIO; 213 } 214 215 /* ARGSUSED */ 216 int 217 cryptof_write(file_t *fp, off_t *poff, 218 struct uio *uio, kauth_cred_t cred, int flags) 219 { 220 return EIO; 221 } 222 223 /* ARGSUSED */ 224 int 225 cryptof_ioctl(struct file *fp, u_long cmd, void *data) 226 { 227 struct fcrypt *fcr = fp->f_fcrypt; 228 struct csession *cse; 229 struct session_op *sop; 230 struct session_n_op *snop; 231 struct crypt_op *cop; 232 struct crypt_mop *mop; 233 struct crypt_mkop *mkop; 234 struct crypt_n_op *cnop; 235 struct crypt_n_kop *knop; 236 struct crypt_sgop *sgop; 237 struct crypt_sfop *sfop; 238 struct cryptret *crypt_ret; 239 struct crypt_result *crypt_res; 240 u_int32_t ses; 241 u_int32_t *sesid; 242 int error = 0; 243 size_t count; 244 245 /* backwards compatibility */ 246 file_t *criofp; 247 struct fcrypt *criofcr; 248 int criofd; 249 250 mutex_enter(&crypto_mtx); 251 getnanotime(&fcr->atime); 252 mutex_exit(&crypto_mtx); 253 254 switch (cmd) { 255 case CRIOGET: /* XXX deprecated, remove after 5.0 */ 256 if ((error = fd_allocfile(&criofp, &criofd)) != 0) 257 return error; 258 criofcr = pool_get(&fcrpl, PR_WAITOK); 259 mutex_enter(&crypto_mtx); 260 TAILQ_INIT(&criofcr->csessions); 261 TAILQ_INIT(&criofcr->crp_ret_mq); 262 TAILQ_INIT(&criofcr->crp_ret_mkq); 263 selinit(&criofcr->sinfo); 264 265 /* 266 * Don't ever return session 0, to allow detection of 267 * failed creation attempts with multi-create ioctl. 268 */ 269 criofcr->sesn = 1; 270 criofcr->requestid = 1; 271 crypto_refcount++; 272 mutex_exit(&crypto_mtx); 273 (void)fd_clone(criofp, criofd, (FREAD|FWRITE), 274 &cryptofops, criofcr); 275 *(u_int32_t *)data = criofd; 276 return error; 277 break; 278 case CIOCGSESSION: 279 sop = (struct session_op *)data; 280 error = cryptodev_session(fcr, sop); 281 break; 282 case CIOCNGSESSION: 283 sgop = (struct crypt_sgop *)data; 284 snop = kmem_alloc((sgop->count * 285 sizeof(struct session_n_op)), KM_SLEEP); 286 error = copyin(sgop->sessions, snop, sgop->count * 287 sizeof(struct session_n_op)); 288 if (error) { 289 goto mbail; 290 } 291 292 mutex_enter(&crypto_mtx); 293 fcr->mtime = fcr->atime; 294 mutex_exit(&crypto_mtx); 295 error = cryptodev_msession(fcr, snop, sgop->count); 296 if (error) { 297 goto mbail; 298 } 299 300 error = copyout(snop, sgop->sessions, sgop->count * 301 sizeof(struct session_n_op)); 302 mbail: 303 kmem_free(snop, sgop->count * sizeof(struct session_n_op)); 304 break; 305 case CIOCFSESSION: 306 mutex_enter(&crypto_mtx); 307 fcr->mtime = fcr->atime; 308 ses = *(u_int32_t *)data; 309 cse = csefind(fcr, ses); 310 if (cse == NULL) { 311 mutex_exit(&crypto_mtx); 312 return EINVAL; 313 } 314 csedelete(fcr, cse); 315 mutex_exit(&crypto_mtx); 316 error = csefree(cse); 317 break; 318 case CIOCNFSESSION: 319 mutex_enter(&crypto_mtx); 320 fcr->mtime = fcr->atime; 321 mutex_exit(&crypto_mtx); 322 sfop = (struct crypt_sfop *)data; 323 sesid = kmem_alloc((sfop->count * sizeof(u_int32_t)), 324 KM_SLEEP); 325 error = copyin(sfop->sesid, sesid, 326 (sfop->count * sizeof(u_int32_t))); 327 if (!error) { 328 error = cryptodev_msessionfin(fcr, sfop->count, sesid); 329 } 330 kmem_free(sesid, (sfop->count * sizeof(u_int32_t))); 331 break; 332 case CIOCCRYPT: 333 mutex_enter(&crypto_mtx); 334 fcr->mtime = fcr->atime; 335 cop = (struct crypt_op *)data; 336 cse = csefind(fcr, cop->ses); 337 mutex_exit(&crypto_mtx); 338 if (cse == NULL) { 339 DPRINTF("csefind failed\n"); 340 return EINVAL; 341 } 342 error = cryptodev_op(cse, cop, curlwp); 343 DPRINTF("cryptodev_op error = %d\n", error); 344 break; 345 case CIOCNCRYPTM: 346 mutex_enter(&crypto_mtx); 347 fcr->mtime = fcr->atime; 348 mutex_exit(&crypto_mtx); 349 mop = (struct crypt_mop *)data; 350 cnop = kmem_alloc((mop->count * sizeof(struct crypt_n_op)), 351 KM_SLEEP); 352 error = copyin(mop->reqs, cnop, 353 (mop->count * sizeof(struct crypt_n_op))); 354 if(!error) { 355 error = cryptodev_mop(fcr, cnop, mop->count, curlwp); 356 if (!error) { 357 error = copyout(cnop, mop->reqs, 358 (mop->count * sizeof(struct crypt_n_op))); 359 } 360 } 361 kmem_free(cnop, (mop->count * sizeof(struct crypt_n_op))); 362 break; 363 case CIOCKEY: 364 error = cryptodev_key((struct crypt_kop *)data); 365 DPRINTF("cryptodev_key error = %d\n", error); 366 break; 367 case CIOCNFKEYM: 368 mutex_enter(&crypto_mtx); 369 fcr->mtime = fcr->atime; 370 mutex_exit(&crypto_mtx); 371 mkop = (struct crypt_mkop *)data; 372 knop = kmem_alloc((mkop->count * sizeof(struct crypt_n_kop)), 373 KM_SLEEP); 374 error = copyin(mkop->reqs, knop, 375 (mkop->count * sizeof(struct crypt_n_kop))); 376 if (!error) { 377 error = cryptodev_mkey(fcr, knop, mkop->count); 378 if (!error) 379 error = copyout(knop, mkop->reqs, 380 (mkop->count * sizeof(struct crypt_n_kop))); 381 } 382 kmem_free(knop, (mkop->count * sizeof(struct crypt_n_kop))); 383 break; 384 case CIOCASYMFEAT: 385 error = crypto_getfeat((int *)data); 386 break; 387 case CIOCNCRYPTRETM: 388 mutex_enter(&crypto_mtx); 389 fcr->mtime = fcr->atime; 390 mutex_exit(&crypto_mtx); 391 crypt_ret = (struct cryptret *)data; 392 count = crypt_ret->count; 393 crypt_res = kmem_alloc((count * sizeof(struct crypt_result)), 394 KM_SLEEP); 395 error = copyin(crypt_ret->results, crypt_res, 396 (count * sizeof(struct crypt_result))); 397 if (error) 398 goto reterr; 399 crypt_ret->count = cryptodev_getmstatus(fcr, crypt_res, 400 crypt_ret->count); 401 /* sanity check count */ 402 if (crypt_ret->count > count) { 403 printf("%s.%d: error returned count %zd > original " 404 " count %zd\n", 405 __FILE__, __LINE__, crypt_ret->count, count); 406 crypt_ret->count = count; 407 408 } 409 error = copyout(crypt_res, crypt_ret->results, 410 (crypt_ret->count * sizeof(struct crypt_result))); 411 reterr: 412 kmem_free(crypt_res, (count * sizeof(struct crypt_result))); 413 break; 414 case CIOCNCRYPTRET: 415 error = cryptodev_getstatus(fcr, (struct crypt_result *)data); 416 break; 417 default: 418 #ifdef COMPAT_50 419 /* Check for backward compatible commands */ 420 error = ocryptof_ioctl(fp, cmd, data); 421 #else 422 return EINVAL; 423 #endif 424 } 425 return error; 426 } 427 428 int 429 cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l) 430 { 431 struct cryptop *crp = NULL; 432 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 433 int error; 434 int iov_len = cop->len; 435 int flags=0; 436 int dst_len; /* copyout size */ 437 438 if (cop->len > 256*1024-4) 439 return E2BIG; 440 441 if (cse->txform) { 442 if (cop->len < cse->txform->blocksize 443 + (cop->iv ? 0 : cse->txform->ivsize) || 444 (cop->len - (cop->iv ? 0 : cse->txform->ivsize)) 445 % cse->txform->blocksize != 0) 446 return EINVAL; 447 } 448 449 DPRINTF("cryptodev_op[%u]: iov_len %d\n", 450 CRYPTO_SESID2LID(cse->sid), iov_len); 451 if ((cse->tcomp) && cop->dst_len) { 452 if (iov_len < cop->dst_len) { 453 /* Need larger iov to deal with decompress */ 454 iov_len = cop->dst_len; 455 } 456 DPRINTF("cryptodev_op: iov_len -> %d for decompress\n", iov_len); 457 } 458 459 (void)memset(&cse->uio, 0, sizeof(cse->uio)); 460 cse->uio.uio_iovcnt = 1; 461 cse->uio.uio_resid = 0; 462 cse->uio.uio_rw = UIO_WRITE; 463 cse->uio.uio_iov = cse->iovec; 464 UIO_SETUP_SYSSPACE(&cse->uio); 465 memset(&cse->iovec, 0, sizeof(cse->iovec)); 466 467 /* the iov needs to be big enough to handle the uncompressed 468 * data.... */ 469 cse->uio.uio_iov[0].iov_len = iov_len; 470 if (iov_len > 0) 471 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 472 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 473 DPRINTF("lid[%u]: uio.iov_base %p malloced %d bytes\n", 474 CRYPTO_SESID2LID(cse->sid), 475 cse->uio.uio_iov[0].iov_base, iov_len); 476 477 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 478 if (crp == NULL) { 479 error = ENOMEM; 480 goto bail; 481 } 482 DPRINTF("lid[%u]: crp %p\n", 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("lid[%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("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("crde setup for cipher %d.\n", crde->crd_alg); 578 } 579 580 581 crp->crp_ilen = cop->len; 582 /* 583 * The request is flagged as CRYPTO_F_USER as long as it is running 584 * in the user IOCTL thread. However, whether the request completes 585 * immediately or belatedly is depends on the used encryption driver. 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 * Don't touch crp before returned by any error or recieved 648 * cv_signal(&crp->crp_cv). It is required to restructure locks. 649 */ 650 651 switch (error) { 652 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 653 case EAGAIN: 654 mutex_exit(&crypto_mtx); 655 goto eagain; 656 break; 657 #endif 658 case 0: 659 break; 660 default: 661 DPRINTF("not waiting, error.\n"); 662 mutex_exit(&crypto_mtx); 663 cv_destroy(&crp->crp_cv); 664 goto bail; 665 } 666 667 while (!(crp->crp_flags & CRYPTO_F_DQRETQ)) { 668 DPRINTF("cse->sid[%d]: sleeping on cv %p for crp %p\n", 669 (uint32_t)cse->sid, &crp->crp_cv, crp); 670 cv_wait(&crp->crp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 671 } 672 mutex_exit(&crypto_mtx); 673 cv_destroy(&crp->crp_cv); 674 675 if (crp->crp_etype != 0) { 676 DPRINTF("crp_etype %d\n", crp->crp_etype); 677 error = crp->crp_etype; 678 goto bail; 679 } 680 681 if (cse->error) { 682 DPRINTF("cse->error %d\n", cse->error); 683 error = cse->error; 684 goto bail; 685 } 686 687 dst_len = crp->crp_ilen; 688 /* let the user know how much data was returned */ 689 if (crp->crp_olen) { 690 if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { 691 error = ENOSPC; 692 goto bail; 693 } 694 dst_len = cop->dst_len = crp->crp_olen; 695 } 696 697 if (cop->dst) { 698 DPRINTF("copyout %d bytes to %p\n", dst_len, cop->dst); 699 } 700 if (cop->dst && 701 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 702 { 703 DPRINTF("copyout error %d\n", error); 704 goto bail; 705 } 706 707 if (cop->mac && 708 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 709 DPRINTF("mac copyout error %d\n", error); 710 goto bail; 711 } 712 713 714 bail: 715 if (crp) { 716 crypto_freereq(crp); 717 } 718 if (cse->uio.uio_iov[0].iov_base) { 719 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 720 } 721 722 return error; 723 } 724 725 static int 726 cryptodev_cb(void *op) 727 { 728 struct cryptop *crp = (struct cryptop *) op; 729 struct csession *cse = (struct csession *)crp->crp_opaque; 730 int error = 0; 731 732 mutex_enter(&crypto_mtx); 733 cse->error = crp->crp_etype; 734 if (crp->crp_etype == EAGAIN) { 735 /* always drop mutex to call dispatch routine */ 736 mutex_exit(&crypto_mtx); 737 error = crypto_dispatch(crp); 738 mutex_enter(&crypto_mtx); 739 } 740 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 741 crp->crp_flags |= CRYPTO_F_DQRETQ; 742 cv_signal(&crp->crp_cv); 743 } 744 mutex_exit(&crypto_mtx); 745 return 0; 746 } 747 748 static int 749 cryptodev_mcb(void *op) 750 { 751 struct cryptop *crp = (struct cryptop *) op; 752 struct csession *cse = (struct csession *)crp->crp_opaque; 753 int error=0; 754 755 mutex_enter(&crypto_mtx); 756 cse->error = crp->crp_etype; 757 if (crp->crp_etype == EAGAIN) { 758 mutex_exit(&crypto_mtx); 759 error = crypto_dispatch(crp); 760 mutex_enter(&crypto_mtx); 761 } 762 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 763 cv_signal(&crp->crp_cv); 764 } 765 766 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 767 selnotify(&crp->fcrp->sinfo, 0, 0); 768 mutex_exit(&crypto_mtx); 769 return 0; 770 } 771 772 static int 773 cryptodevkey_cb(void *op) 774 { 775 struct cryptkop *krp = op; 776 777 mutex_enter(&crypto_mtx); 778 krp->krp_flags |= CRYPTO_F_DQRETQ; 779 cv_signal(&krp->krp_cv); 780 mutex_exit(&crypto_mtx); 781 return 0; 782 } 783 784 static int 785 cryptodevkey_mcb(void *op) 786 { 787 struct cryptkop *krp = op; 788 789 mutex_enter(&crypto_mtx); 790 cv_signal(&krp->krp_cv); 791 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 792 selnotify(&krp->fcrp->sinfo, 0, 0); 793 mutex_exit(&crypto_mtx); 794 return 0; 795 } 796 797 static int 798 cryptodev_key(struct crypt_kop *kop) 799 { 800 struct cryptkop *krp = NULL; 801 int error = EINVAL; 802 int in, out, size, i; 803 804 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 805 return EFBIG; 806 807 in = kop->crk_iparams; 808 out = kop->crk_oparams; 809 switch (kop->crk_op) { 810 case CRK_MOD_EXP: 811 if (in == 3 && out == 1) 812 break; 813 return EINVAL; 814 case CRK_MOD_EXP_CRT: 815 if (in == 6 && out == 1) 816 break; 817 return EINVAL; 818 case CRK_DSA_SIGN: 819 if (in == 5 && out == 2) 820 break; 821 return EINVAL; 822 case CRK_DSA_VERIFY: 823 if (in == 7 && out == 0) 824 break; 825 return EINVAL; 826 case CRK_DH_COMPUTE_KEY: 827 if (in == 3 && out == 1) 828 break; 829 return EINVAL; 830 case CRK_MOD_ADD: 831 if (in == 3 && out == 1) 832 break; 833 return EINVAL; 834 case CRK_MOD_ADDINV: 835 if (in == 2 && out == 1) 836 break; 837 return EINVAL; 838 case CRK_MOD_SUB: 839 if (in == 3 && out == 1) 840 break; 841 return EINVAL; 842 case CRK_MOD_MULT: 843 if (in == 3 && out == 1) 844 break; 845 return EINVAL; 846 case CRK_MOD_MULTINV: 847 if (in == 2 && out == 1) 848 break; 849 return EINVAL; 850 case CRK_MOD: 851 if (in == 2 && out == 1) 852 break; 853 return EINVAL; 854 default: 855 return EINVAL; 856 } 857 858 krp = pool_get(&cryptkop_pool, PR_WAITOK); 859 (void)memset(krp, 0, sizeof *krp); 860 cv_init(&krp->krp_cv, "crykdev"); 861 krp->krp_op = kop->crk_op; 862 krp->krp_status = kop->crk_status; 863 krp->krp_iparams = kop->crk_iparams; 864 krp->krp_oparams = kop->crk_oparams; 865 krp->krp_status = 0; 866 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 867 868 for (i = 0; i < CRK_MAXPARAM; i++) 869 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 870 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 871 size = (krp->krp_param[i].crp_nbits + 7) / 8; 872 if (size == 0) 873 continue; 874 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 875 if (i >= krp->krp_iparams) 876 continue; 877 error = copyin(kop->crk_param[i].crp_p, 878 krp->krp_param[i].crp_p, size); 879 if (error) 880 goto fail; 881 } 882 883 error = crypto_kdispatch(krp); 884 if (error != 0) { 885 goto fail; 886 } 887 888 mutex_enter(&crypto_mtx); 889 while (!(krp->krp_flags & CRYPTO_F_DQRETQ)) { 890 cv_wait(&krp->krp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 891 } 892 mutex_exit(&crypto_mtx); 893 894 if (krp->krp_status != 0) { 895 DPRINTF("krp->krp_status 0x%08x\n", krp->krp_status); 896 error = krp->krp_status; 897 goto fail; 898 } 899 900 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 901 i++) { 902 size = (krp->krp_param[i].crp_nbits + 7) / 8; 903 if (size == 0) 904 continue; 905 error = copyout(krp->krp_param[i].crp_p, 906 kop->crk_param[i].crp_p, size); 907 if (error) { 908 DPRINTF("copyout oparam %d failed, " 909 "error=%d\n", i-krp->krp_iparams, error); 910 goto fail; 911 } 912 } 913 914 fail: 915 kop->crk_status = krp->krp_status; 916 for (i = 0; i < CRK_MAXPARAM; i++) { 917 struct crparam *kp = &(krp->krp_param[i]); 918 if (krp->krp_param[i].crp_p) { 919 size = (kp->crp_nbits + 7) / 8; 920 KASSERT(size > 0); 921 (void)memset(kp->crp_p, 0, size); 922 kmem_free(kp->crp_p, size); 923 } 924 } 925 cv_destroy(&krp->krp_cv); 926 pool_put(&cryptkop_pool, krp); 927 DPRINTF("error=0x%08x\n", error); 928 return error; 929 } 930 931 /* ARGSUSED */ 932 static int 933 cryptof_close(struct file *fp) 934 { 935 struct fcrypt *fcr = fp->f_fcrypt; 936 struct csession *cse; 937 938 mutex_enter(&crypto_mtx); 939 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 940 TAILQ_REMOVE(&fcr->csessions, cse, next); 941 mutex_exit(&crypto_mtx); 942 (void)csefree(cse); 943 mutex_enter(&crypto_mtx); 944 } 945 seldestroy(&fcr->sinfo); 946 fp->f_fcrypt = NULL; 947 crypto_refcount--; 948 mutex_exit(&crypto_mtx); 949 950 pool_put(&fcrpl, fcr); 951 return 0; 952 } 953 954 /* needed for compatibility module */ 955 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 956 { 957 return csefind(fcr, ses); 958 } 959 960 /* csefind: call with crypto_mtx held. */ 961 static struct csession * 962 csefind(struct fcrypt *fcr, u_int ses) 963 { 964 struct csession *cse, *cnext, *ret = NULL; 965 966 KASSERT(mutex_owned(&crypto_mtx)); 967 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 968 if (cse->ses == ses) 969 ret = cse; 970 971 return ret; 972 } 973 974 /* csedelete: call with crypto_mtx held. */ 975 static int 976 csedelete(struct fcrypt *fcr, struct csession *cse_del) 977 { 978 struct csession *cse, *cnext; 979 int ret = 0; 980 981 KASSERT(mutex_owned(&crypto_mtx)); 982 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 983 if (cse == cse_del) { 984 TAILQ_REMOVE(&fcr->csessions, cse, next); 985 ret = 1; 986 } 987 } 988 return ret; 989 } 990 991 static struct csession * 992 cseadd(struct fcrypt *fcr, struct csession *cse) 993 { 994 mutex_enter(&crypto_mtx); 995 /* don't let session ID wrap! */ 996 if (fcr->sesn + 1 == 0) return NULL; 997 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 998 cse->ses = fcr->sesn++; 999 mutex_exit(&crypto_mtx); 1000 return cse; 1001 } 1002 1003 static struct csession * 1004 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 1005 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 1006 u_int32_t comp_alg, const struct enc_xform *txform, 1007 const struct auth_hash *thash, const struct comp_algo *tcomp) 1008 { 1009 struct csession *cse; 1010 1011 cse = pool_get(&csepl, PR_NOWAIT); 1012 if (cse == NULL) 1013 return NULL; 1014 cse->key = key; 1015 cse->keylen = keylen/8; 1016 cse->mackey = mackey; 1017 cse->mackeylen = mackeylen/8; 1018 cse->sid = sid; 1019 cse->cipher = cipher; 1020 cse->mac = mac; 1021 cse->comp_alg = comp_alg; 1022 cse->txform = txform; 1023 cse->thash = thash; 1024 cse->tcomp = tcomp; 1025 cse->error = 0; 1026 if (cseadd(fcr, cse)) 1027 return cse; 1028 else { 1029 pool_put(&csepl, cse); 1030 return NULL; 1031 } 1032 } 1033 1034 /* csefree: call with crypto_mtx held. */ 1035 static int 1036 csefree(struct csession *cse) 1037 { 1038 int error; 1039 1040 error = crypto_freesession(cse->sid); 1041 if (cse->key) 1042 free(cse->key, M_XDATA); 1043 if (cse->mackey) 1044 free(cse->mackey, M_XDATA); 1045 pool_put(&csepl, cse); 1046 return error; 1047 } 1048 1049 static int 1050 cryptoopen(dev_t dev, int flag, int mode, 1051 struct lwp *l) 1052 { 1053 file_t *fp; 1054 struct fcrypt *fcr; 1055 int fd, error; 1056 1057 if (crypto_usercrypto == 0) 1058 return ENXIO; 1059 1060 if ((error = fd_allocfile(&fp, &fd)) != 0) 1061 return error; 1062 1063 fcr = pool_get(&fcrpl, PR_WAITOK); 1064 getnanotime(&fcr->btime); 1065 fcr->atime = fcr->mtime = fcr->btime; 1066 mutex_enter(&crypto_mtx); 1067 TAILQ_INIT(&fcr->csessions); 1068 TAILQ_INIT(&fcr->crp_ret_mq); 1069 TAILQ_INIT(&fcr->crp_ret_mkq); 1070 selinit(&fcr->sinfo); 1071 /* 1072 * Don't ever return session 0, to allow detection of 1073 * failed creation attempts with multi-create ioctl. 1074 */ 1075 fcr->sesn = 1; 1076 fcr->requestid = 1; 1077 crypto_refcount++; 1078 mutex_exit(&crypto_mtx); 1079 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1080 } 1081 1082 static int 1083 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1084 { 1085 return EIO; 1086 } 1087 1088 static int 1089 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1090 { 1091 return EIO; 1092 } 1093 1094 int 1095 cryptoselect(dev_t dev, int rw, struct lwp *l) 1096 { 1097 return 0; 1098 } 1099 1100 /*static*/ 1101 struct cdevsw crypto_cdevsw = { 1102 .d_open = cryptoopen, 1103 .d_close = noclose, 1104 .d_read = cryptoread, 1105 .d_write = cryptowrite, 1106 .d_ioctl = noioctl, 1107 .d_stop = nostop, 1108 .d_tty = notty, 1109 .d_poll = cryptoselect /*nopoll*/, 1110 .d_mmap = nommap, 1111 .d_kqfilter = nokqfilter, 1112 .d_discard = nodiscard, 1113 .d_flag = D_OTHER 1114 }; 1115 1116 int 1117 cryptodev_mop(struct fcrypt *fcr, 1118 struct crypt_n_op * cnop, 1119 int count, struct lwp *l) 1120 { 1121 struct cryptop *crp = NULL; 1122 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1123 int req, error=0; 1124 struct csession *cse; 1125 int flags=0; 1126 int iov_len; 1127 1128 for (req = 0; req < count; req++) { 1129 mutex_enter(&crypto_mtx); 1130 cse = csefind(fcr, cnop[req].ses); 1131 if (cse == NULL) { 1132 DPRINTF("csefind failed\n"); 1133 cnop[req].status = EINVAL; 1134 mutex_exit(&crypto_mtx); 1135 continue; 1136 } 1137 mutex_exit(&crypto_mtx); 1138 1139 if (cnop[req].len > 256*1024-4) { 1140 DPRINTF("length failed\n"); 1141 cnop[req].status = EINVAL; 1142 continue; 1143 } 1144 if (cse->txform) { 1145 if (cnop[req].len < cse->txform->blocksize - 1146 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1147 (cnop[req].len - 1148 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1149 % cse->txform->blocksize) { 1150 cnop[req].status = EINVAL; 1151 continue; 1152 } 1153 } 1154 1155 crp = crypto_getreq((cse->txform != NULL) + 1156 (cse->thash != NULL) + 1157 (cse->tcomp != NULL)); 1158 if (crp == NULL) { 1159 cnop[req].status = ENOMEM; 1160 goto bail; 1161 } 1162 1163 iov_len = cnop[req].len; 1164 /* got a compression/decompression max size? */ 1165 if ((cse->tcomp) && cnop[req].dst_len) { 1166 if (iov_len < cnop[req].dst_len) { 1167 /* Need larger iov to deal with decompress */ 1168 iov_len = cnop[req].dst_len; 1169 } 1170 DPRINTF("iov_len -> %d for decompress\n", iov_len); 1171 } 1172 1173 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1174 crp->uio.uio_iovcnt = 1; 1175 crp->uio.uio_resid = 0; 1176 crp->uio.uio_rw = UIO_WRITE; 1177 crp->uio.uio_iov = crp->iovec; 1178 UIO_SETUP_SYSSPACE(&crp->uio); 1179 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1180 crp->uio.uio_iov[0].iov_len = iov_len; 1181 DPRINTF("kmem_alloc(%d) for iov \n", iov_len); 1182 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1183 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1184 1185 if (cse->tcomp) { 1186 crdc = crp->crp_desc; 1187 } 1188 1189 if (cse->thash) { 1190 crda = crdc ? crdc->crd_next : crp->crp_desc; 1191 if (cse->txform && crda) 1192 crde = crda->crd_next; 1193 } else { 1194 if (cse->txform) { 1195 crde = crdc ? crdc->crd_next : crp->crp_desc; 1196 } else if (!cse->tcomp) { 1197 error = EINVAL; 1198 goto bail; 1199 } 1200 } 1201 1202 if ((copyin(cnop[req].src, 1203 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1204 cnop[req].status = EINVAL; 1205 goto bail; 1206 } 1207 1208 if (crdc) { 1209 switch (cnop[req].op) { 1210 case COP_COMP: 1211 crdc->crd_flags |= CRD_F_COMP; 1212 break; 1213 case COP_DECOMP: 1214 crdc->crd_flags &= ~CRD_F_COMP; 1215 break; 1216 default: 1217 break; 1218 } 1219 /* more data to follow? */ 1220 if (cnop[req].flags & COP_F_MORE) { 1221 flags |= CRYPTO_F_MORE; 1222 } 1223 crdc->crd_len = cnop[req].len; 1224 crdc->crd_inject = 0; 1225 1226 crdc->crd_alg = cse->comp_alg; 1227 crdc->crd_key = NULL; 1228 crdc->crd_klen = 0; 1229 DPRINTF("cse->sid[%d]: crdc setup for comp_alg %d" 1230 " len %d.\n", 1231 (uint32_t)cse->sid, crdc->crd_alg, 1232 crdc->crd_len); 1233 } 1234 1235 if (crda) { 1236 crda->crd_skip = 0; 1237 crda->crd_len = cnop[req].len; 1238 crda->crd_inject = 0; /* ??? */ 1239 1240 crda->crd_alg = cse->mac; 1241 crda->crd_key = cse->mackey; 1242 crda->crd_klen = cse->mackeylen * 8; 1243 } 1244 1245 if (crde) { 1246 if (cnop[req].op == COP_ENCRYPT) 1247 crde->crd_flags |= CRD_F_ENCRYPT; 1248 else 1249 crde->crd_flags &= ~CRD_F_ENCRYPT; 1250 crde->crd_len = cnop[req].len; 1251 crde->crd_inject = 0; 1252 1253 crde->crd_alg = cse->cipher; 1254 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1255 if(cnop[req].key && cnop[req].keylen) { 1256 crde->crd_key = malloc(cnop[req].keylen, 1257 M_XDATA, M_WAITOK); 1258 if((error = copyin(cnop[req].key, 1259 crde->crd_key, cnop[req].keylen))) { 1260 cnop[req].status = EINVAL; 1261 goto bail; 1262 } 1263 crde->crd_klen = cnop[req].keylen * 8; 1264 } else { ... } 1265 #endif 1266 crde->crd_key = cse->key; 1267 crde->crd_klen = cse->keylen * 8; 1268 } 1269 1270 crp->crp_ilen = cnop[req].len; 1271 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | 1272 (cnop[req].flags & COP_F_BATCH) | flags; 1273 crp->crp_buf = (void *)&crp->uio; 1274 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_mcb; 1275 crp->crp_sid = cse->sid; 1276 crp->crp_opaque = (void *)cse; 1277 crp->fcrp = fcr; 1278 crp->dst = cnop[req].dst; 1279 crp->len = cnop[req].len; /* input len, iov may be larger */ 1280 crp->mac = cnop[req].mac; 1281 DPRINTF("iov_base %p dst %p len %d mac %p\n", 1282 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1283 crp->mac); 1284 1285 if (cnop[req].iv) { 1286 if (crde == NULL) { 1287 cnop[req].status = EINVAL; 1288 goto bail; 1289 } 1290 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1291 cnop[req].status = EINVAL; 1292 goto bail; 1293 } 1294 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1295 cse->txform->ivsize))) { 1296 cnop[req].status = EINVAL; 1297 goto bail; 1298 } 1299 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1300 cse->txform->ivsize); 1301 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1302 crde->crd_skip = 0; 1303 } else if (crde) { 1304 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1305 crde->crd_skip = 0; 1306 } else { 1307 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1308 crde->crd_flags |= CRD_F_IV_PRESENT; 1309 crde->crd_skip = cse->txform->ivsize; 1310 crde->crd_len -= cse->txform->ivsize; 1311 } 1312 } 1313 1314 if (cnop[req].mac) { 1315 if (crda == NULL) { 1316 cnop[req].status = EINVAL; 1317 goto bail; 1318 } 1319 crp->crp_mac=cse->tmp_mac; 1320 } 1321 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1322 crp->crp_reqid = cnop[req].reqid; 1323 crp->crp_usropaque = cnop[req].opaque; 1324 cv_init(&crp->crp_cv, "crydev"); 1325 #ifdef notyet 1326 eagain: 1327 #endif 1328 cnop[req].status = crypto_dispatch(crp); 1329 mutex_enter(&crypto_mtx); /* XXX why mutex? */ 1330 1331 switch (cnop[req].status) { 1332 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1333 case EAGAIN: 1334 mutex_exit(&crypto_mtx); 1335 goto eagain; 1336 break; 1337 #endif 1338 case 0: 1339 break; 1340 default: 1341 DPRINTF("not waiting, error.\n"); 1342 mutex_exit(&crypto_mtx); 1343 cv_destroy(&crp->crp_cv); 1344 goto bail; 1345 } 1346 1347 mutex_exit(&crypto_mtx); 1348 cv_destroy(&crp->crp_cv); 1349 bail: 1350 if (cnop[req].status) { 1351 if (crp) { 1352 if (crp->uio.uio_iov[0].iov_base) { 1353 kmem_free(crp->uio.uio_iov[0].iov_base, 1354 crp->uio.uio_iov[0].iov_len); 1355 } 1356 crypto_freereq(crp); 1357 } 1358 error = 0; 1359 } 1360 } 1361 return error; 1362 } 1363 1364 static int 1365 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1366 { 1367 struct cryptkop *krp = NULL; 1368 int error = EINVAL; 1369 int in, out, size, i, req; 1370 1371 for (req = 0; req < count; req++) { 1372 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1373 return EFBIG; 1374 1375 in = kop[req].crk_iparams; 1376 out = kop[req].crk_oparams; 1377 switch (kop[req].crk_op) { 1378 case CRK_MOD_EXP: 1379 if (in == 3 && out == 1) 1380 break; 1381 kop[req].crk_status = EINVAL; 1382 continue; 1383 case CRK_MOD_EXP_CRT: 1384 if (in == 6 && out == 1) 1385 break; 1386 kop[req].crk_status = EINVAL; 1387 continue; 1388 case CRK_DSA_SIGN: 1389 if (in == 5 && out == 2) 1390 break; 1391 kop[req].crk_status = EINVAL; 1392 continue; 1393 case CRK_DSA_VERIFY: 1394 if (in == 7 && out == 0) 1395 break; 1396 kop[req].crk_status = EINVAL; 1397 continue; 1398 case CRK_DH_COMPUTE_KEY: 1399 if (in == 3 && out == 1) 1400 break; 1401 kop[req].crk_status = EINVAL; 1402 continue; 1403 case CRK_MOD_ADD: 1404 if (in == 3 && out == 1) 1405 break; 1406 kop[req].crk_status = EINVAL; 1407 continue; 1408 case CRK_MOD_ADDINV: 1409 if (in == 2 && out == 1) 1410 break; 1411 kop[req].crk_status = EINVAL; 1412 continue; 1413 case CRK_MOD_SUB: 1414 if (in == 3 && out == 1) 1415 break; 1416 kop[req].crk_status = EINVAL; 1417 continue; 1418 case CRK_MOD_MULT: 1419 if (in == 3 && out == 1) 1420 break; 1421 kop[req].crk_status = EINVAL; 1422 continue; 1423 case CRK_MOD_MULTINV: 1424 if (in == 2 && out == 1) 1425 break; 1426 kop[req].crk_status = EINVAL; 1427 continue; 1428 case CRK_MOD: 1429 if (in == 2 && out == 1) 1430 break; 1431 kop[req].crk_status = EINVAL; 1432 continue; 1433 default: 1434 kop[req].crk_status = EINVAL; 1435 continue; 1436 } 1437 1438 krp = pool_get(&cryptkop_pool, PR_WAITOK); 1439 (void)memset(krp, 0, sizeof *krp); 1440 cv_init(&krp->krp_cv, "crykdev"); 1441 krp->krp_op = kop[req].crk_op; 1442 krp->krp_status = kop[req].crk_status; 1443 krp->krp_iparams = kop[req].crk_iparams; 1444 krp->krp_oparams = kop[req].crk_oparams; 1445 krp->krp_status = 0; 1446 krp->krp_callback = 1447 (int (*) (struct cryptkop *)) cryptodevkey_mcb; 1448 (void)memcpy(krp->crk_param, kop[req].crk_param, 1449 sizeof(kop[req].crk_param)); 1450 1451 krp->krp_flags = CRYPTO_F_CBIMM; 1452 1453 for (i = 0; i < CRK_MAXPARAM; i++) 1454 krp->krp_param[i].crp_nbits = 1455 kop[req].crk_param[i].crp_nbits; 1456 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1457 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1458 if (size == 0) 1459 continue; 1460 krp->krp_param[i].crp_p = 1461 kmem_alloc(size, KM_SLEEP); 1462 if (i >= krp->krp_iparams) 1463 continue; 1464 kop[req].crk_status = 1465 copyin(kop[req].crk_param[i].crp_p, 1466 krp->krp_param[i].crp_p, size); 1467 if (kop[req].crk_status) 1468 goto fail; 1469 } 1470 krp->fcrp = fcr; 1471 1472 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1473 krp->krp_reqid = kop[req].crk_reqid; 1474 krp->krp_usropaque = kop[req].crk_opaque; 1475 1476 kop[req].crk_status = crypto_kdispatch(krp); 1477 if (kop[req].crk_status != 0) { 1478 goto fail; 1479 } 1480 1481 fail: 1482 if(kop[req].crk_status) { 1483 if (krp) { 1484 kop[req].crk_status = krp->krp_status; 1485 for (i = 0; i < CRK_MAXPARAM; i++) { 1486 struct crparam *kp = 1487 &(krp->krp_param[i]); 1488 if (kp->crp_p) { 1489 size = (kp->crp_nbits + 7) / 8; 1490 KASSERT(size > 0); 1491 memset(kp->crp_p, 0, size); 1492 kmem_free(kp->crp_p, size); 1493 } 1494 } 1495 cv_destroy(&krp->krp_cv); 1496 pool_put(&cryptkop_pool, krp); 1497 } 1498 } 1499 error = 0; 1500 } 1501 DPRINTF("error=0x%08x\n", error); 1502 return error; 1503 } 1504 1505 int 1506 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1507 { 1508 struct cryptoini cria, crie; 1509 struct cryptoini cric; /* compressor */ 1510 struct cryptoini *crihead = NULL; 1511 const struct enc_xform *txform = NULL; 1512 const struct auth_hash *thash = NULL; 1513 const struct comp_algo *tcomp = NULL; 1514 struct csession *cse; 1515 u_int64_t sid; 1516 int error = 0; 1517 1518 DPRINTF("cipher=%d, mac=%d\n", sop->cipher, sop->mac); 1519 1520 /* XXX there must be a way to not embed the list of xforms here */ 1521 switch (sop->cipher) { 1522 case 0: 1523 break; 1524 case CRYPTO_DES_CBC: 1525 txform = &enc_xform_des; 1526 break; 1527 case CRYPTO_3DES_CBC: 1528 txform = &enc_xform_3des; 1529 break; 1530 case CRYPTO_BLF_CBC: 1531 txform = &enc_xform_blf; 1532 break; 1533 case CRYPTO_CAST_CBC: 1534 txform = &enc_xform_cast5; 1535 break; 1536 case CRYPTO_SKIPJACK_CBC: 1537 txform = &enc_xform_skipjack; 1538 break; 1539 case CRYPTO_AES_CBC: 1540 txform = &enc_xform_rijndael128; 1541 break; 1542 case CRYPTO_CAMELLIA_CBC: 1543 txform = &enc_xform_camellia; 1544 break; 1545 case CRYPTO_AES_CTR: 1546 txform = &enc_xform_aes_ctr; 1547 break; 1548 case CRYPTO_AES_GCM_16: 1549 txform = &enc_xform_aes_gcm; 1550 break; 1551 case CRYPTO_AES_GMAC: 1552 txform = &enc_xform_aes_gmac; 1553 break; 1554 case CRYPTO_NULL_CBC: 1555 txform = &enc_xform_null; 1556 break; 1557 case CRYPTO_ARC4: 1558 txform = &enc_xform_arc4; 1559 break; 1560 default: 1561 DPRINTF("Invalid cipher %d\n", sop->cipher); 1562 return EINVAL; 1563 } 1564 1565 switch (sop->comp_alg) { 1566 case 0: 1567 break; 1568 case CRYPTO_DEFLATE_COMP: 1569 tcomp = &comp_algo_deflate; 1570 break; 1571 case CRYPTO_GZIP_COMP: 1572 tcomp = &comp_algo_gzip; 1573 DPRINTF("tcomp for GZIP\n"); 1574 break; 1575 default: 1576 DPRINTF("Invalid compression alg %d\n", sop->comp_alg); 1577 return EINVAL; 1578 } 1579 1580 switch (sop->mac) { 1581 case 0: 1582 break; 1583 case CRYPTO_MD5_HMAC: 1584 thash = &auth_hash_hmac_md5; 1585 break; 1586 case CRYPTO_SHA1_HMAC: 1587 thash = &auth_hash_hmac_sha1; 1588 break; 1589 case CRYPTO_MD5_HMAC_96: 1590 thash = &auth_hash_hmac_md5_96; 1591 break; 1592 case CRYPTO_SHA1_HMAC_96: 1593 thash = &auth_hash_hmac_sha1_96; 1594 break; 1595 case CRYPTO_SHA2_HMAC: 1596 /* XXX switching on key length seems questionable */ 1597 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1598 thash = &auth_hash_hmac_sha2_256; 1599 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1600 thash = &auth_hash_hmac_sha2_384; 1601 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1602 thash = &auth_hash_hmac_sha2_512; 1603 } else { 1604 DPRINTF("Invalid mackeylen %d\n", sop->mackeylen); 1605 return EINVAL; 1606 } 1607 break; 1608 case CRYPTO_RIPEMD160_HMAC: 1609 thash = &auth_hash_hmac_ripemd_160; 1610 break; 1611 case CRYPTO_RIPEMD160_HMAC_96: 1612 thash = &auth_hash_hmac_ripemd_160_96; 1613 break; 1614 case CRYPTO_MD5: 1615 thash = &auth_hash_md5; 1616 break; 1617 case CRYPTO_SHA1: 1618 thash = &auth_hash_sha1; 1619 break; 1620 case CRYPTO_AES_XCBC_MAC_96: 1621 thash = &auth_hash_aes_xcbc_mac_96; 1622 break; 1623 case CRYPTO_AES_128_GMAC: 1624 thash = &auth_hash_gmac_aes_128; 1625 break; 1626 case CRYPTO_AES_192_GMAC: 1627 thash = &auth_hash_gmac_aes_192; 1628 break; 1629 case CRYPTO_AES_256_GMAC: 1630 thash = &auth_hash_gmac_aes_256; 1631 break; 1632 case CRYPTO_NULL_HMAC: 1633 thash = &auth_hash_null; 1634 break; 1635 default: 1636 DPRINTF("Invalid mac %d\n", sop->mac); 1637 return EINVAL; 1638 } 1639 1640 memset(&crie, 0, sizeof(crie)); 1641 memset(&cria, 0, sizeof(cria)); 1642 memset(&cric, 0, sizeof(cric)); 1643 1644 if (tcomp) { 1645 cric.cri_alg = tcomp->type; 1646 cric.cri_klen = 0; 1647 DPRINTF("tcomp->type = %d\n", tcomp->type); 1648 1649 crihead = &cric; 1650 if (txform) { 1651 cric.cri_next = &crie; 1652 } else if (thash) { 1653 cric.cri_next = &cria; 1654 } 1655 } 1656 1657 if (txform) { 1658 crie.cri_alg = txform->type; 1659 crie.cri_klen = sop->keylen * 8; 1660 if (sop->keylen > txform->maxkey || 1661 sop->keylen < txform->minkey) { 1662 DPRINTF("keylen %d not in [%d,%d]\n", 1663 sop->keylen, txform->minkey, txform->maxkey); 1664 error = EINVAL; 1665 goto bail; 1666 } 1667 1668 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1669 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1670 goto bail; 1671 if (!crihead) { 1672 crihead = &crie; 1673 } 1674 if (thash) 1675 crie.cri_next = &cria; 1676 } 1677 1678 if (thash) { 1679 cria.cri_alg = thash->type; 1680 cria.cri_klen = sop->mackeylen * 8; 1681 if (sop->mackeylen != thash->keysize) { 1682 DPRINTF("mackeylen %d != keysize %d\n", 1683 sop->mackeylen, thash->keysize); 1684 error = EINVAL; 1685 goto bail; 1686 } 1687 if (cria.cri_klen) { 1688 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1689 M_WAITOK); 1690 if ((error = copyin(sop->mackey, cria.cri_key, 1691 cria.cri_klen / 8))) { 1692 goto bail; 1693 } 1694 } 1695 if (!crihead) { 1696 crihead = &cria; 1697 } 1698 } 1699 1700 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1701 if (!error) { 1702 DPRINTF("got session %d\n", (uint32_t)sid); 1703 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1704 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1705 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1706 if (cse != NULL) { 1707 sop->ses = cse->ses; 1708 } else { 1709 DPRINTF("csecreate failed\n"); 1710 crypto_freesession(sid); 1711 error = EINVAL; 1712 } 1713 } else { 1714 DPRINTF("SIOCSESSION violates kernel parameters %d\n", error); 1715 } 1716 bail: 1717 if (error) { 1718 if (crie.cri_key) { 1719 memset(crie.cri_key, 0, crie.cri_klen / 8); 1720 free(crie.cri_key, M_XDATA); 1721 } 1722 if (cria.cri_key) { 1723 memset(cria.cri_key, 0, cria.cri_klen / 8); 1724 free(cria.cri_key, M_XDATA); 1725 } 1726 } 1727 return error; 1728 } 1729 1730 int 1731 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1732 int count) 1733 { 1734 int i; 1735 1736 for (i = 0; i < count; i++, sn_ops++) { 1737 struct session_op s_op; 1738 s_op.cipher = sn_ops->cipher; 1739 s_op.mac = sn_ops->mac; 1740 s_op.keylen = sn_ops->keylen; 1741 s_op.key = sn_ops->key; 1742 s_op.mackeylen = sn_ops->mackeylen; 1743 s_op.mackey = sn_ops->mackey; 1744 1745 sn_ops->status = cryptodev_session(fcr, &s_op); 1746 sn_ops->ses = s_op.ses; 1747 } 1748 1749 return 0; 1750 } 1751 1752 static int 1753 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1754 { 1755 struct csession *cse; 1756 int req, error = 0; 1757 1758 mutex_enter(&crypto_mtx); 1759 for(req = 0; req < count; req++) { 1760 cse = csefind(fcr, sesid[req]); 1761 if (cse == NULL) 1762 continue; 1763 csedelete(fcr, cse); 1764 mutex_exit(&crypto_mtx); 1765 error = csefree(cse); 1766 mutex_enter(&crypto_mtx); 1767 } 1768 mutex_exit(&crypto_mtx); 1769 return error; 1770 } 1771 1772 /* 1773 * collect as many completed requests as are availble, or count completed 1774 * requests whichever is less. 1775 * return the number of requests. 1776 */ 1777 static int 1778 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1779 int count) 1780 { 1781 struct cryptop *crp = NULL; 1782 struct cryptkop *krp = NULL; 1783 struct csession *cse; 1784 int i, size, req = 0; 1785 int completed=0; 1786 1787 /* On queue so nobody else can grab them 1788 * and copyout can be delayed-- no locking */ 1789 TAILQ_HEAD(, cryptop) crp_delfree_q = 1790 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1791 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1792 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1793 1794 /* at this point we do not know which response user is requesting for 1795 * (symmetric or asymmetric) so we copyout one from each i.e if the 1796 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1797 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1798 1799 /* pull off a list of requests while protected from changes */ 1800 mutex_enter(&crypto_mtx); 1801 while (req < count) { 1802 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1803 if (crp) { 1804 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1805 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1806 cse = (struct csession *)crp->crp_opaque; 1807 1808 /* see if the session is still valid */ 1809 cse = csefind(fcr, cse->ses); 1810 if (cse != NULL) { 1811 crypt_res[req].status = 0; 1812 } else { 1813 DPRINTF("csefind failed\n"); 1814 crypt_res[req].status = EINVAL; 1815 } 1816 req++; 1817 } 1818 if(req < count) { 1819 crypt_res[req].status = 0; 1820 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1821 if (krp) { 1822 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1823 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1824 req++; 1825 } 1826 } 1827 } 1828 mutex_exit(&crypto_mtx); 1829 1830 /* now do all the work outside the mutex */ 1831 for(req=0; req < count ;) { 1832 crp = TAILQ_FIRST(&crp_delfree_q); 1833 if (crp) { 1834 if (crypt_res[req].status != 0) { 1835 /* csefind failed during collection */ 1836 goto bail; 1837 } 1838 cse = (struct csession *)crp->crp_opaque; 1839 crypt_res[req].reqid = crp->crp_reqid; 1840 crypt_res[req].opaque = crp->crp_usropaque; 1841 completed++; 1842 1843 if (crp->crp_etype != 0) { 1844 crypt_res[req].status = crp->crp_etype; 1845 goto bail; 1846 } 1847 1848 if (cse->error) { 1849 crypt_res[req].status = cse->error; 1850 goto bail; 1851 } 1852 1853 if (crp->dst && (crypt_res[req].status = 1854 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1855 crp->len))) 1856 goto bail; 1857 1858 if (crp->mac && (crypt_res[req].status = 1859 copyout(crp->crp_mac, crp->mac, 1860 cse->thash->authsize))) 1861 goto bail; 1862 1863 bail: 1864 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1865 kmem_free(crp->uio.uio_iov[0].iov_base, 1866 crp->uio.uio_iov[0].iov_len); 1867 crypto_freereq(crp); 1868 req++; 1869 } 1870 1871 if (req < count) { 1872 krp = TAILQ_FIRST(&krp_delfree_q); 1873 if (krp) { 1874 crypt_res[req].reqid = krp->krp_reqid; 1875 crypt_res[req].opaque = krp->krp_usropaque; 1876 completed++; 1877 if (krp->krp_status != 0) { 1878 DPRINTF("krp->krp_status 0x%08x\n", 1879 krp->krp_status); 1880 crypt_res[req].status = krp->krp_status; 1881 goto fail; 1882 } 1883 1884 for (i = krp->krp_iparams; i < krp->krp_iparams 1885 + krp->krp_oparams; i++) { 1886 size = (krp->krp_param[i].crp_nbits 1887 + 7) / 8; 1888 if (size == 0) 1889 continue; 1890 crypt_res[req].status = copyout 1891 (krp->krp_param[i].crp_p, 1892 krp->crk_param[i].crp_p, size); 1893 if (crypt_res[req].status) { 1894 DPRINTF("copyout oparam %d failed, " 1895 "error=%d\n", 1896 i - krp->krp_iparams, 1897 crypt_res[req].status); 1898 goto fail; 1899 } 1900 } 1901 fail: 1902 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1903 /* not sure what to do for this */ 1904 /* kop[req].crk_status = krp->krp_status; */ 1905 for (i = 0; i < CRK_MAXPARAM; i++) { 1906 struct crparam *kp = &(krp->krp_param[i]); 1907 if (kp->crp_p) { 1908 size = (kp->crp_nbits + 7) / 8; 1909 KASSERT(size > 0); 1910 (void)memset(kp->crp_p, 0, size); 1911 kmem_free(kp->crp_p, size); 1912 } 1913 } 1914 cv_destroy(&krp->krp_cv); 1915 pool_put(&cryptkop_pool, krp); 1916 req++; 1917 } 1918 } 1919 } 1920 1921 return completed; 1922 } 1923 1924 static int 1925 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1926 { 1927 struct cryptop *crp = NULL, *cnext; 1928 struct cryptkop *krp = NULL, *knext; 1929 struct csession *cse; 1930 int i, size, req = 0; 1931 1932 mutex_enter(&crypto_mtx); 1933 /* Here we dont know for which request the user is requesting the 1934 * response so checking in both the queues */ 1935 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1936 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1937 cse = (struct csession *)crp->crp_opaque; 1938 crypt_res->opaque = crp->crp_usropaque; 1939 cse = csefind(fcr, cse->ses); 1940 if (cse == NULL) { 1941 DPRINTF("csefind failed\n"); 1942 crypt_res->status = EINVAL; 1943 goto bail; 1944 } 1945 1946 if (crp->crp_etype != 0) { 1947 crypt_res->status = crp->crp_etype; 1948 goto bail; 1949 } 1950 1951 if (cse->error) { 1952 crypt_res->status = cse->error; 1953 goto bail; 1954 } 1955 1956 if (crp->dst && (crypt_res->status = 1957 copyout(crp->uio.uio_iov[0].iov_base, 1958 crp->dst, crp->len))) 1959 goto bail; 1960 1961 if (crp->mac && (crypt_res->status = 1962 copyout(crp->crp_mac, crp->mac, 1963 cse->thash->authsize))) 1964 goto bail; 1965 bail: 1966 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1967 1968 mutex_exit(&crypto_mtx); 1969 crypto_freereq(crp); 1970 return 0; 1971 } 1972 } 1973 1974 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1975 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1976 crypt_res[req].opaque = krp->krp_usropaque; 1977 if (krp->krp_status != 0) { 1978 DPRINTF("krp->krp_status 0x%08x\n", 1979 krp->krp_status); 1980 crypt_res[req].status = krp->krp_status; 1981 goto fail; 1982 } 1983 1984 for (i = krp->krp_iparams; i < krp->krp_iparams + 1985 krp->krp_oparams; i++) { 1986 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1987 if (size == 0) 1988 continue; 1989 crypt_res[req].status = copyout( 1990 krp->krp_param[i].crp_p, 1991 krp->crk_param[i].crp_p, size); 1992 if (crypt_res[req].status) { 1993 DPRINTF("copyout oparam " 1994 "%d failed, error=%d\n", 1995 i - krp->krp_iparams, 1996 crypt_res[req].status); 1997 goto fail; 1998 } 1999 } 2000 fail: 2001 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 2002 mutex_exit(&crypto_mtx); 2003 /* not sure what to do for this */ 2004 /* kop[req].crk_status = krp->krp_status; */ 2005 for (i = 0; i < CRK_MAXPARAM; i++) { 2006 struct crparam *kp = &(krp->krp_param[i]); 2007 if (kp->crp_p) { 2008 size = (kp->crp_nbits + 7) / 8; 2009 KASSERT(size > 0); 2010 memset(kp->crp_p, 0, size); 2011 kmem_free(kp->crp_p, size); 2012 } 2013 } 2014 cv_destroy(&krp->krp_cv); 2015 pool_put(&cryptkop_pool, krp); 2016 return 0; 2017 } 2018 } 2019 mutex_exit(&crypto_mtx); 2020 return EINPROGRESS; 2021 } 2022 2023 static int 2024 cryptof_stat(struct file *fp, struct stat *st) 2025 { 2026 struct fcrypt *fcr = fp->f_fcrypt; 2027 2028 (void)memset(st, 0, sizeof(*st)); 2029 2030 mutex_enter(&crypto_mtx); 2031 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2032 st->st_atimespec = fcr->atime; 2033 st->st_mtimespec = fcr->mtime; 2034 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2035 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2036 st->st_gid = kauth_cred_getegid(fp->f_cred); 2037 mutex_exit(&crypto_mtx); 2038 2039 return 0; 2040 } 2041 2042 static int 2043 cryptof_poll(struct file *fp, int events) 2044 { 2045 struct fcrypt *fcr = fp->f_fcrypt; 2046 int revents = 0; 2047 2048 if (!(events & (POLLIN | POLLRDNORM))) { 2049 /* only support read and POLLIN */ 2050 return 0; 2051 } 2052 2053 mutex_enter(&crypto_mtx); 2054 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2055 /* no completed requests pending, save the poll for later */ 2056 selrecord(curlwp, &fcr->sinfo); 2057 } else { 2058 /* let the app(s) know that there are completed requests */ 2059 revents = events & (POLLIN | POLLRDNORM); 2060 } 2061 mutex_exit(&crypto_mtx); 2062 2063 return revents; 2064 } 2065 2066 /* 2067 * Pseudo-device initialization routine for /dev/crypto 2068 */ 2069 void 2070 cryptoattach(int num) 2071 { 2072 crypto_init(); 2073 2074 mutex_init(&crypto_mtx, MUTEX_DEFAULT, IPL_NONE); 2075 2076 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2077 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2078 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2079 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2080 2081 /* 2082 * Preallocate space for 64 users, with 5 sessions each. 2083 * (consider that a TLS protocol session requires at least 2084 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2085 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2086 * consuming one session here for each algorithm. 2087 */ 2088 pool_prime(&fcrpl, 64); 2089 pool_prime(&csepl, 64 * 5); 2090 } 2091 2092 void crypto_attach(device_t, device_t, void *); 2093 2094 void 2095 crypto_attach(device_t parent, device_t self, void * opaque) 2096 { 2097 2098 cryptoattach(0); 2099 } 2100 2101 int crypto_detach(device_t, int); 2102 2103 int 2104 crypto_detach(device_t self, int num) 2105 { 2106 2107 pool_destroy(&fcrpl); 2108 pool_destroy(&csepl); 2109 2110 mutex_destroy(&crypto_mtx); 2111 2112 return 0; 2113 } 2114 2115 int crypto_match(device_t, cfdata_t, void *); 2116 2117 int 2118 crypto_match(device_t parent, cfdata_t data, void *opaque) 2119 { 2120 2121 return 1; 2122 } 2123 2124 MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto"); 2125 2126 CFDRIVER_DECL(crypto, DV_DULL, NULL); 2127 2128 CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, 2129 NULL, NULL, NULL); 2130 2131 #ifdef _MODULE 2132 static int cryptoloc[] = { -1, -1 }; 2133 2134 static struct cfdata crypto_cfdata[] = { 2135 { 2136 .cf_name = "crypto", 2137 .cf_atname = "crypto", 2138 .cf_unit = 0, 2139 .cf_fstate = 0, 2140 .cf_loc = cryptoloc, 2141 .cf_flags = 0, 2142 .cf_pspec = NULL, 2143 }, 2144 { NULL, NULL, 0, 0, NULL, 0, NULL } 2145 }; 2146 #endif 2147 2148 static int 2149 crypto_modcmd(modcmd_t cmd, void *arg) 2150 { 2151 int error = 0; 2152 #ifdef _MODULE 2153 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 2154 #endif 2155 2156 switch (cmd) { 2157 case MODULE_CMD_INIT: 2158 #ifdef _MODULE 2159 2160 error = config_cfdriver_attach(&crypto_cd); 2161 if (error) { 2162 return error; 2163 } 2164 2165 error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); 2166 if (error) { 2167 config_cfdriver_detach(&crypto_cd); 2168 aprint_error("%s: unable to register cfattach\n", 2169 crypto_cd.cd_name); 2170 2171 return error; 2172 } 2173 2174 error = config_cfdata_attach(crypto_cfdata, 1); 2175 if (error) { 2176 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2177 config_cfdriver_detach(&crypto_cd); 2178 aprint_error("%s: unable to register cfdata\n", 2179 crypto_cd.cd_name); 2180 2181 return error; 2182 } 2183 2184 error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, 2185 &crypto_cdevsw, &cmajor); 2186 if (error) { 2187 error = config_cfdata_detach(crypto_cfdata); 2188 if (error) { 2189 return error; 2190 } 2191 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2192 config_cfdriver_detach(&crypto_cd); 2193 aprint_error("%s: unable to register devsw\n", 2194 crypto_cd.cd_name); 2195 2196 return error; 2197 } 2198 2199 (void)config_attach_pseudo(crypto_cfdata); 2200 #endif 2201 2202 return error; 2203 case MODULE_CMD_FINI: 2204 #ifdef _MODULE 2205 error = config_cfdata_detach(crypto_cfdata); 2206 if (error) { 2207 return error; 2208 } 2209 2210 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2211 config_cfdriver_detach(&crypto_cd); 2212 devsw_detach(NULL, &crypto_cdevsw); 2213 #endif 2214 2215 return error; 2216 #ifdef _MODULE 2217 case MODULE_CMD_AUTOUNLOAD: 2218 #if 0 /* 2219 * XXX Completely disable auto-unload for now, since there is still 2220 * XXX a (small) window where in-module ref-counting doesn't help 2221 */ 2222 if (crypto_refcount != 0) 2223 #endif 2224 return EBUSY; 2225 /* FALLTHROUGH */ 2226 #endif 2227 default: 2228 return ENOTTY; 2229 } 2230 } 2231
Indexes created Tue Sep 23 02:09:52 GMT 2025