cryptodev.c revision 1.92
1 /* $NetBSD: cryptodev.c,v 1.92 2017/06/02 09:46:57 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 1.92 2017/06/02 09:46:57 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 cryptodev_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(&cryptodev_mtx); 251 getnanotime(&fcr->atime); 252 mutex_exit(&cryptodev_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(&cryptodev_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(&cryptodev_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(&cryptodev_mtx); 293 fcr->mtime = fcr->atime; 294 mutex_exit(&cryptodev_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(&cryptodev_mtx); 307 fcr->mtime = fcr->atime; 308 ses = *(u_int32_t *)data; 309 cse = csefind(fcr, ses); 310 if (cse == NULL) { 311 mutex_exit(&cryptodev_mtx); 312 return EINVAL; 313 } 314 csedelete(fcr, cse); 315 mutex_exit(&cryptodev_mtx); 316 error = csefree(cse); 317 break; 318 case CIOCNFSESSION: 319 mutex_enter(&cryptodev_mtx); 320 fcr->mtime = fcr->atime; 321 mutex_exit(&cryptodev_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(&cryptodev_mtx); 334 fcr->mtime = fcr->atime; 335 cop = (struct crypt_op *)data; 336 cse = csefind(fcr, cop->ses); 337 mutex_exit(&cryptodev_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(&cryptodev_mtx); 347 fcr->mtime = fcr->atime; 348 mutex_exit(&cryptodev_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(&cryptodev_mtx); 369 fcr->mtime = fcr->atime; 370 mutex_exit(&cryptodev_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(&cryptodev_mtx); 389 fcr->mtime = fcr->atime; 390 mutex_exit(&cryptodev_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 cryptodev_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(&cryptodev_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(&cryptodev_mtx); 655 goto eagain; 656 break; 657 #endif 658 case 0: 659 break; 660 default: 661 DPRINTF("not waiting, error.\n"); 662 mutex_exit(&cryptodev_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, &cryptodev_mtx); /* XXX cv_wait_sig? */ 671 } 672 mutex_exit(&cryptodev_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(&cryptodev_mtx); 733 cse->error = crp->crp_etype; 734 if (crp->crp_etype == EAGAIN) { 735 /* always drop mutex to call dispatch routine */ 736 mutex_exit(&cryptodev_mtx); 737 error = crypto_dispatch(crp); 738 mutex_enter(&cryptodev_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(&cryptodev_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(&cryptodev_mtx); 756 cse->error = crp->crp_etype; 757 if (crp->crp_etype == EAGAIN) { 758 mutex_exit(&cryptodev_mtx); 759 error = crypto_dispatch(crp); 760 mutex_enter(&cryptodev_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(&cryptodev_mtx); 769 return 0; 770 } 771 772 static int 773 cryptodevkey_cb(void *op) 774 { 775 struct cryptkop *krp = op; 776 777 mutex_enter(&cryptodev_mtx); 778 krp->krp_flags |= CRYPTO_F_DQRETQ; 779 cv_signal(&krp->krp_cv); 780 mutex_exit(&cryptodev_mtx); 781 return 0; 782 } 783 784 static int 785 cryptodevkey_mcb(void *op) 786 { 787 struct cryptkop *krp = op; 788 789 mutex_enter(&cryptodev_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(&cryptodev_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 = crypto_kgetreq(1, PR_WAITOK); 859 if (krp == NULL) { 860 /* limited by opencrypto.crypto_ret_kq.maxlen */ 861 return ENOMEM; 862 } 863 (void)memset(krp, 0, sizeof *krp); 864 cv_init(&krp->krp_cv, "crykdev"); 865 krp->krp_op = kop->crk_op; 866 krp->krp_status = kop->crk_status; 867 krp->krp_iparams = kop->crk_iparams; 868 krp->krp_oparams = kop->crk_oparams; 869 krp->krp_status = 0; 870 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 871 872 for (i = 0; i < CRK_MAXPARAM; i++) 873 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 874 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 875 size = (krp->krp_param[i].crp_nbits + 7) / 8; 876 if (size == 0) 877 continue; 878 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 879 if (i >= krp->krp_iparams) 880 continue; 881 error = copyin(kop->crk_param[i].crp_p, 882 krp->krp_param[i].crp_p, size); 883 if (error) 884 goto fail; 885 } 886 887 error = crypto_kdispatch(krp); 888 if (error != 0) { 889 goto fail; 890 } 891 892 mutex_enter(&cryptodev_mtx); 893 while (!(krp->krp_flags & CRYPTO_F_DQRETQ)) { 894 cv_wait(&krp->krp_cv, &cryptodev_mtx); /* XXX cv_wait_sig? */ 895 } 896 mutex_exit(&cryptodev_mtx); 897 898 if (krp->krp_status != 0) { 899 DPRINTF("krp->krp_status 0x%08x\n", krp->krp_status); 900 error = krp->krp_status; 901 goto fail; 902 } 903 904 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 905 i++) { 906 size = (krp->krp_param[i].crp_nbits + 7) / 8; 907 if (size == 0) 908 continue; 909 error = copyout(krp->krp_param[i].crp_p, 910 kop->crk_param[i].crp_p, size); 911 if (error) { 912 DPRINTF("copyout oparam %d failed, " 913 "error=%d\n", i-krp->krp_iparams, error); 914 goto fail; 915 } 916 } 917 918 fail: 919 kop->crk_status = krp->krp_status; 920 for (i = 0; i < CRK_MAXPARAM; i++) { 921 struct crparam *kp = &(krp->krp_param[i]); 922 if (krp->krp_param[i].crp_p) { 923 size = (kp->crp_nbits + 7) / 8; 924 KASSERT(size > 0); 925 (void)memset(kp->crp_p, 0, size); 926 kmem_free(kp->crp_p, size); 927 } 928 } 929 cv_destroy(&krp->krp_cv); 930 crypto_kfreereq(krp); 931 DPRINTF("error=0x%08x\n", error); 932 return error; 933 } 934 935 /* ARGSUSED */ 936 static int 937 cryptof_close(struct file *fp) 938 { 939 struct fcrypt *fcr = fp->f_fcrypt; 940 struct csession *cse; 941 942 mutex_enter(&cryptodev_mtx); 943 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 944 TAILQ_REMOVE(&fcr->csessions, cse, next); 945 mutex_exit(&cryptodev_mtx); 946 (void)csefree(cse); 947 mutex_enter(&cryptodev_mtx); 948 } 949 seldestroy(&fcr->sinfo); 950 fp->f_fcrypt = NULL; 951 crypto_refcount--; 952 mutex_exit(&cryptodev_mtx); 953 954 pool_put(&fcrpl, fcr); 955 return 0; 956 } 957 958 /* needed for compatibility module */ 959 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 960 { 961 return csefind(fcr, ses); 962 } 963 964 /* csefind: call with cryptodev_mtx held. */ 965 static struct csession * 966 csefind(struct fcrypt *fcr, u_int ses) 967 { 968 struct csession *cse, *cnext, *ret = NULL; 969 970 KASSERT(mutex_owned(&cryptodev_mtx)); 971 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 972 if (cse->ses == ses) 973 ret = cse; 974 975 return ret; 976 } 977 978 /* csedelete: call with cryptodev_mtx held. */ 979 static int 980 csedelete(struct fcrypt *fcr, struct csession *cse_del) 981 { 982 struct csession *cse, *cnext; 983 int ret = 0; 984 985 KASSERT(mutex_owned(&cryptodev_mtx)); 986 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 987 if (cse == cse_del) { 988 TAILQ_REMOVE(&fcr->csessions, cse, next); 989 ret = 1; 990 } 991 } 992 return ret; 993 } 994 995 static struct csession * 996 cseadd(struct fcrypt *fcr, struct csession *cse) 997 { 998 mutex_enter(&cryptodev_mtx); 999 /* don't let session ID wrap! */ 1000 if (fcr->sesn + 1 == 0) return NULL; 1001 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 1002 cse->ses = fcr->sesn++; 1003 mutex_exit(&cryptodev_mtx); 1004 return cse; 1005 } 1006 1007 static struct csession * 1008 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 1009 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 1010 u_int32_t comp_alg, const struct enc_xform *txform, 1011 const struct auth_hash *thash, const struct comp_algo *tcomp) 1012 { 1013 struct csession *cse; 1014 1015 cse = pool_get(&csepl, PR_NOWAIT); 1016 if (cse == NULL) 1017 return NULL; 1018 cse->key = key; 1019 cse->keylen = keylen/8; 1020 cse->mackey = mackey; 1021 cse->mackeylen = mackeylen/8; 1022 cse->sid = sid; 1023 cse->cipher = cipher; 1024 cse->mac = mac; 1025 cse->comp_alg = comp_alg; 1026 cse->txform = txform; 1027 cse->thash = thash; 1028 cse->tcomp = tcomp; 1029 cse->error = 0; 1030 if (cseadd(fcr, cse)) 1031 return cse; 1032 else { 1033 pool_put(&csepl, cse); 1034 return NULL; 1035 } 1036 } 1037 1038 /* csefree: call with cryptodev_mtx held. */ 1039 static int 1040 csefree(struct csession *cse) 1041 { 1042 int error; 1043 1044 error = crypto_freesession(cse->sid); 1045 if (cse->key) 1046 free(cse->key, M_XDATA); 1047 if (cse->mackey) 1048 free(cse->mackey, M_XDATA); 1049 pool_put(&csepl, cse); 1050 return error; 1051 } 1052 1053 static int 1054 cryptoopen(dev_t dev, int flag, int mode, 1055 struct lwp *l) 1056 { 1057 file_t *fp; 1058 struct fcrypt *fcr; 1059 int fd, error; 1060 1061 if (crypto_usercrypto == 0) 1062 return ENXIO; 1063 1064 if ((error = fd_allocfile(&fp, &fd)) != 0) 1065 return error; 1066 1067 fcr = pool_get(&fcrpl, PR_WAITOK); 1068 getnanotime(&fcr->btime); 1069 fcr->atime = fcr->mtime = fcr->btime; 1070 mutex_enter(&cryptodev_mtx); 1071 TAILQ_INIT(&fcr->csessions); 1072 TAILQ_INIT(&fcr->crp_ret_mq); 1073 TAILQ_INIT(&fcr->crp_ret_mkq); 1074 selinit(&fcr->sinfo); 1075 /* 1076 * Don't ever return session 0, to allow detection of 1077 * failed creation attempts with multi-create ioctl. 1078 */ 1079 fcr->sesn = 1; 1080 fcr->requestid = 1; 1081 crypto_refcount++; 1082 mutex_exit(&cryptodev_mtx); 1083 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1084 } 1085 1086 static int 1087 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1088 { 1089 return EIO; 1090 } 1091 1092 static int 1093 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1094 { 1095 return EIO; 1096 } 1097 1098 int 1099 cryptoselect(dev_t dev, int rw, struct lwp *l) 1100 { 1101 return 0; 1102 } 1103 1104 /*static*/ 1105 struct cdevsw crypto_cdevsw = { 1106 .d_open = cryptoopen, 1107 .d_close = noclose, 1108 .d_read = cryptoread, 1109 .d_write = cryptowrite, 1110 .d_ioctl = noioctl, 1111 .d_stop = nostop, 1112 .d_tty = notty, 1113 .d_poll = cryptoselect /*nopoll*/, 1114 .d_mmap = nommap, 1115 .d_kqfilter = nokqfilter, 1116 .d_discard = nodiscard, 1117 .d_flag = D_OTHER 1118 }; 1119 1120 int 1121 cryptodev_mop(struct fcrypt *fcr, 1122 struct crypt_n_op * cnop, 1123 int count, struct lwp *l) 1124 { 1125 struct cryptop *crp = NULL; 1126 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1127 int req, error=0; 1128 struct csession *cse; 1129 int flags=0; 1130 int iov_len; 1131 1132 for (req = 0; req < count; req++) { 1133 mutex_enter(&cryptodev_mtx); 1134 cse = csefind(fcr, cnop[req].ses); 1135 if (cse == NULL) { 1136 DPRINTF("csefind failed\n"); 1137 cnop[req].status = EINVAL; 1138 mutex_exit(&cryptodev_mtx); 1139 continue; 1140 } 1141 mutex_exit(&cryptodev_mtx); 1142 1143 if (cnop[req].len > 256*1024-4) { 1144 DPRINTF("length failed\n"); 1145 cnop[req].status = EINVAL; 1146 continue; 1147 } 1148 if (cse->txform) { 1149 if (cnop[req].len < cse->txform->blocksize - 1150 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1151 (cnop[req].len - 1152 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1153 % cse->txform->blocksize) { 1154 cnop[req].status = EINVAL; 1155 continue; 1156 } 1157 } 1158 1159 crp = crypto_getreq((cse->txform != NULL) + 1160 (cse->thash != NULL) + 1161 (cse->tcomp != NULL)); 1162 if (crp == NULL) { 1163 cnop[req].status = ENOMEM; 1164 goto bail; 1165 } 1166 1167 iov_len = cnop[req].len; 1168 /* got a compression/decompression max size? */ 1169 if ((cse->tcomp) && cnop[req].dst_len) { 1170 if (iov_len < cnop[req].dst_len) { 1171 /* Need larger iov to deal with decompress */ 1172 iov_len = cnop[req].dst_len; 1173 } 1174 DPRINTF("iov_len -> %d for decompress\n", iov_len); 1175 } 1176 1177 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1178 crp->uio.uio_iovcnt = 1; 1179 crp->uio.uio_resid = 0; 1180 crp->uio.uio_rw = UIO_WRITE; 1181 crp->uio.uio_iov = crp->iovec; 1182 UIO_SETUP_SYSSPACE(&crp->uio); 1183 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1184 crp->uio.uio_iov[0].iov_len = iov_len; 1185 DPRINTF("kmem_alloc(%d) for iov \n", iov_len); 1186 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1187 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1188 1189 if (cse->tcomp) { 1190 crdc = crp->crp_desc; 1191 } 1192 1193 if (cse->thash) { 1194 crda = crdc ? crdc->crd_next : crp->crp_desc; 1195 if (cse->txform && crda) 1196 crde = crda->crd_next; 1197 } else { 1198 if (cse->txform) { 1199 crde = crdc ? crdc->crd_next : crp->crp_desc; 1200 } else if (!cse->tcomp) { 1201 error = EINVAL; 1202 goto bail; 1203 } 1204 } 1205 1206 if ((copyin(cnop[req].src, 1207 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1208 cnop[req].status = EINVAL; 1209 goto bail; 1210 } 1211 1212 if (crdc) { 1213 switch (cnop[req].op) { 1214 case COP_COMP: 1215 crdc->crd_flags |= CRD_F_COMP; 1216 break; 1217 case COP_DECOMP: 1218 crdc->crd_flags &= ~CRD_F_COMP; 1219 break; 1220 default: 1221 break; 1222 } 1223 /* more data to follow? */ 1224 if (cnop[req].flags & COP_F_MORE) { 1225 flags |= CRYPTO_F_MORE; 1226 } 1227 crdc->crd_len = cnop[req].len; 1228 crdc->crd_inject = 0; 1229 1230 crdc->crd_alg = cse->comp_alg; 1231 crdc->crd_key = NULL; 1232 crdc->crd_klen = 0; 1233 DPRINTF("cse->sid[%d]: crdc setup for comp_alg %d" 1234 " len %d.\n", 1235 (uint32_t)cse->sid, crdc->crd_alg, 1236 crdc->crd_len); 1237 } 1238 1239 if (crda) { 1240 crda->crd_skip = 0; 1241 crda->crd_len = cnop[req].len; 1242 crda->crd_inject = 0; /* ??? */ 1243 1244 crda->crd_alg = cse->mac; 1245 crda->crd_key = cse->mackey; 1246 crda->crd_klen = cse->mackeylen * 8; 1247 } 1248 1249 if (crde) { 1250 if (cnop[req].op == COP_ENCRYPT) 1251 crde->crd_flags |= CRD_F_ENCRYPT; 1252 else 1253 crde->crd_flags &= ~CRD_F_ENCRYPT; 1254 crde->crd_len = cnop[req].len; 1255 crde->crd_inject = 0; 1256 1257 crde->crd_alg = cse->cipher; 1258 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1259 if(cnop[req].key && cnop[req].keylen) { 1260 crde->crd_key = malloc(cnop[req].keylen, 1261 M_XDATA, M_WAITOK); 1262 if((error = copyin(cnop[req].key, 1263 crde->crd_key, cnop[req].keylen))) { 1264 cnop[req].status = EINVAL; 1265 goto bail; 1266 } 1267 crde->crd_klen = cnop[req].keylen * 8; 1268 } else { ... } 1269 #endif 1270 crde->crd_key = cse->key; 1271 crde->crd_klen = cse->keylen * 8; 1272 } 1273 1274 crp->crp_ilen = cnop[req].len; 1275 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | 1276 (cnop[req].flags & COP_F_BATCH) | flags; 1277 crp->crp_buf = (void *)&crp->uio; 1278 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_mcb; 1279 crp->crp_sid = cse->sid; 1280 crp->crp_opaque = (void *)cse; 1281 crp->fcrp = fcr; 1282 crp->dst = cnop[req].dst; 1283 crp->len = cnop[req].len; /* input len, iov may be larger */ 1284 crp->mac = cnop[req].mac; 1285 DPRINTF("iov_base %p dst %p len %d mac %p\n", 1286 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1287 crp->mac); 1288 1289 if (cnop[req].iv) { 1290 if (crde == NULL) { 1291 cnop[req].status = EINVAL; 1292 goto bail; 1293 } 1294 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1295 cnop[req].status = EINVAL; 1296 goto bail; 1297 } 1298 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1299 cse->txform->ivsize))) { 1300 cnop[req].status = EINVAL; 1301 goto bail; 1302 } 1303 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1304 cse->txform->ivsize); 1305 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1306 crde->crd_skip = 0; 1307 } else if (crde) { 1308 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1309 crde->crd_skip = 0; 1310 } else { 1311 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1312 crde->crd_flags |= CRD_F_IV_PRESENT; 1313 crde->crd_skip = cse->txform->ivsize; 1314 crde->crd_len -= cse->txform->ivsize; 1315 } 1316 } 1317 1318 if (cnop[req].mac) { 1319 if (crda == NULL) { 1320 cnop[req].status = EINVAL; 1321 goto bail; 1322 } 1323 crp->crp_mac=cse->tmp_mac; 1324 } 1325 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1326 crp->crp_reqid = cnop[req].reqid; 1327 crp->crp_usropaque = cnop[req].opaque; 1328 cv_init(&crp->crp_cv, "crydev"); 1329 #ifdef notyet 1330 eagain: 1331 #endif 1332 cnop[req].status = crypto_dispatch(crp); 1333 mutex_enter(&cryptodev_mtx); /* XXX why mutex? */ 1334 1335 switch (cnop[req].status) { 1336 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1337 case EAGAIN: 1338 mutex_exit(&cryptodev_mtx); 1339 goto eagain; 1340 break; 1341 #endif 1342 case 0: 1343 break; 1344 default: 1345 DPRINTF("not waiting, error.\n"); 1346 mutex_exit(&cryptodev_mtx); 1347 cv_destroy(&crp->crp_cv); 1348 goto bail; 1349 } 1350 1351 mutex_exit(&cryptodev_mtx); 1352 cv_destroy(&crp->crp_cv); 1353 bail: 1354 if (cnop[req].status) { 1355 if (crp) { 1356 if (crp->uio.uio_iov[0].iov_base) { 1357 kmem_free(crp->uio.uio_iov[0].iov_base, 1358 crp->uio.uio_iov[0].iov_len); 1359 } 1360 crypto_freereq(crp); 1361 } 1362 error = 0; 1363 } 1364 } 1365 return error; 1366 } 1367 1368 static int 1369 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1370 { 1371 struct cryptkop *krp = NULL; 1372 int error = EINVAL; 1373 int in, out, size, i, req; 1374 1375 for (req = 0; req < count; req++) { 1376 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1377 return EFBIG; 1378 1379 in = kop[req].crk_iparams; 1380 out = kop[req].crk_oparams; 1381 switch (kop[req].crk_op) { 1382 case CRK_MOD_EXP: 1383 if (in == 3 && out == 1) 1384 break; 1385 kop[req].crk_status = EINVAL; 1386 continue; 1387 case CRK_MOD_EXP_CRT: 1388 if (in == 6 && out == 1) 1389 break; 1390 kop[req].crk_status = EINVAL; 1391 continue; 1392 case CRK_DSA_SIGN: 1393 if (in == 5 && out == 2) 1394 break; 1395 kop[req].crk_status = EINVAL; 1396 continue; 1397 case CRK_DSA_VERIFY: 1398 if (in == 7 && out == 0) 1399 break; 1400 kop[req].crk_status = EINVAL; 1401 continue; 1402 case CRK_DH_COMPUTE_KEY: 1403 if (in == 3 && out == 1) 1404 break; 1405 kop[req].crk_status = EINVAL; 1406 continue; 1407 case CRK_MOD_ADD: 1408 if (in == 3 && out == 1) 1409 break; 1410 kop[req].crk_status = EINVAL; 1411 continue; 1412 case CRK_MOD_ADDINV: 1413 if (in == 2 && out == 1) 1414 break; 1415 kop[req].crk_status = EINVAL; 1416 continue; 1417 case CRK_MOD_SUB: 1418 if (in == 3 && out == 1) 1419 break; 1420 kop[req].crk_status = EINVAL; 1421 continue; 1422 case CRK_MOD_MULT: 1423 if (in == 3 && out == 1) 1424 break; 1425 kop[req].crk_status = EINVAL; 1426 continue; 1427 case CRK_MOD_MULTINV: 1428 if (in == 2 && out == 1) 1429 break; 1430 kop[req].crk_status = EINVAL; 1431 continue; 1432 case CRK_MOD: 1433 if (in == 2 && out == 1) 1434 break; 1435 kop[req].crk_status = EINVAL; 1436 continue; 1437 default: 1438 kop[req].crk_status = EINVAL; 1439 continue; 1440 } 1441 1442 krp = crypto_kgetreq(1, PR_WAITOK); 1443 if (krp == NULL) { 1444 /* limited by opencrypto.crypto_ret_kq.maxlen */ 1445 continue; 1446 } 1447 (void)memset(krp, 0, sizeof *krp); 1448 cv_init(&krp->krp_cv, "crykdev"); 1449 krp->krp_op = kop[req].crk_op; 1450 krp->krp_status = kop[req].crk_status; 1451 krp->krp_iparams = kop[req].crk_iparams; 1452 krp->krp_oparams = kop[req].crk_oparams; 1453 krp->krp_status = 0; 1454 krp->krp_callback = 1455 (int (*) (struct cryptkop *)) cryptodevkey_mcb; 1456 (void)memcpy(krp->crk_param, kop[req].crk_param, 1457 sizeof(kop[req].crk_param)); 1458 1459 krp->krp_flags = CRYPTO_F_CBIMM; 1460 1461 for (i = 0; i < CRK_MAXPARAM; i++) 1462 krp->krp_param[i].crp_nbits = 1463 kop[req].crk_param[i].crp_nbits; 1464 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1465 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1466 if (size == 0) 1467 continue; 1468 krp->krp_param[i].crp_p = 1469 kmem_alloc(size, KM_SLEEP); 1470 if (i >= krp->krp_iparams) 1471 continue; 1472 kop[req].crk_status = 1473 copyin(kop[req].crk_param[i].crp_p, 1474 krp->krp_param[i].crp_p, size); 1475 if (kop[req].crk_status) 1476 goto fail; 1477 } 1478 krp->fcrp = fcr; 1479 1480 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1481 krp->krp_reqid = kop[req].crk_reqid; 1482 krp->krp_usropaque = kop[req].crk_opaque; 1483 1484 kop[req].crk_status = crypto_kdispatch(krp); 1485 if (kop[req].crk_status != 0) { 1486 goto fail; 1487 } 1488 1489 fail: 1490 if(kop[req].crk_status) { 1491 if (krp) { 1492 kop[req].crk_status = krp->krp_status; 1493 for (i = 0; i < CRK_MAXPARAM; i++) { 1494 struct crparam *kp = 1495 &(krp->krp_param[i]); 1496 if (kp->crp_p) { 1497 size = (kp->crp_nbits + 7) / 8; 1498 KASSERT(size > 0); 1499 memset(kp->crp_p, 0, size); 1500 kmem_free(kp->crp_p, size); 1501 } 1502 } 1503 cv_destroy(&krp->krp_cv); 1504 crypto_kfreereq(krp); 1505 } 1506 } 1507 error = 0; 1508 } 1509 DPRINTF("error=0x%08x\n", error); 1510 return error; 1511 } 1512 1513 int 1514 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1515 { 1516 struct cryptoini cria, crie; 1517 struct cryptoini cric; /* compressor */ 1518 struct cryptoini *crihead = NULL; 1519 const struct enc_xform *txform = NULL; 1520 const struct auth_hash *thash = NULL; 1521 const struct comp_algo *tcomp = NULL; 1522 struct csession *cse; 1523 u_int64_t sid; 1524 int error = 0; 1525 1526 DPRINTF("cipher=%d, mac=%d\n", sop->cipher, sop->mac); 1527 1528 /* XXX there must be a way to not embed the list of xforms here */ 1529 switch (sop->cipher) { 1530 case 0: 1531 break; 1532 case CRYPTO_DES_CBC: 1533 txform = &enc_xform_des; 1534 break; 1535 case CRYPTO_3DES_CBC: 1536 txform = &enc_xform_3des; 1537 break; 1538 case CRYPTO_BLF_CBC: 1539 txform = &enc_xform_blf; 1540 break; 1541 case CRYPTO_CAST_CBC: 1542 txform = &enc_xform_cast5; 1543 break; 1544 case CRYPTO_SKIPJACK_CBC: 1545 txform = &enc_xform_skipjack; 1546 break; 1547 case CRYPTO_AES_CBC: 1548 txform = &enc_xform_rijndael128; 1549 break; 1550 case CRYPTO_CAMELLIA_CBC: 1551 txform = &enc_xform_camellia; 1552 break; 1553 case CRYPTO_AES_CTR: 1554 txform = &enc_xform_aes_ctr; 1555 break; 1556 case CRYPTO_AES_GCM_16: 1557 txform = &enc_xform_aes_gcm; 1558 break; 1559 case CRYPTO_AES_GMAC: 1560 txform = &enc_xform_aes_gmac; 1561 break; 1562 case CRYPTO_NULL_CBC: 1563 txform = &enc_xform_null; 1564 break; 1565 case CRYPTO_ARC4: 1566 txform = &enc_xform_arc4; 1567 break; 1568 default: 1569 DPRINTF("Invalid cipher %d\n", sop->cipher); 1570 return EINVAL; 1571 } 1572 1573 switch (sop->comp_alg) { 1574 case 0: 1575 break; 1576 case CRYPTO_DEFLATE_COMP: 1577 tcomp = &comp_algo_deflate; 1578 break; 1579 case CRYPTO_GZIP_COMP: 1580 tcomp = &comp_algo_gzip; 1581 DPRINTF("tcomp for GZIP\n"); 1582 break; 1583 default: 1584 DPRINTF("Invalid compression alg %d\n", sop->comp_alg); 1585 return EINVAL; 1586 } 1587 1588 switch (sop->mac) { 1589 case 0: 1590 break; 1591 case CRYPTO_MD5_HMAC: 1592 thash = &auth_hash_hmac_md5; 1593 break; 1594 case CRYPTO_SHA1_HMAC: 1595 thash = &auth_hash_hmac_sha1; 1596 break; 1597 case CRYPTO_MD5_HMAC_96: 1598 thash = &auth_hash_hmac_md5_96; 1599 break; 1600 case CRYPTO_SHA1_HMAC_96: 1601 thash = &auth_hash_hmac_sha1_96; 1602 break; 1603 case CRYPTO_SHA2_HMAC: 1604 /* XXX switching on key length seems questionable */ 1605 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1606 thash = &auth_hash_hmac_sha2_256; 1607 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1608 thash = &auth_hash_hmac_sha2_384; 1609 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1610 thash = &auth_hash_hmac_sha2_512; 1611 } else { 1612 DPRINTF("Invalid mackeylen %d\n", sop->mackeylen); 1613 return EINVAL; 1614 } 1615 break; 1616 case CRYPTO_RIPEMD160_HMAC: 1617 thash = &auth_hash_hmac_ripemd_160; 1618 break; 1619 case CRYPTO_RIPEMD160_HMAC_96: 1620 thash = &auth_hash_hmac_ripemd_160_96; 1621 break; 1622 case CRYPTO_MD5: 1623 thash = &auth_hash_md5; 1624 break; 1625 case CRYPTO_SHA1: 1626 thash = &auth_hash_sha1; 1627 break; 1628 case CRYPTO_AES_XCBC_MAC_96: 1629 thash = &auth_hash_aes_xcbc_mac_96; 1630 break; 1631 case CRYPTO_AES_128_GMAC: 1632 thash = &auth_hash_gmac_aes_128; 1633 break; 1634 case CRYPTO_AES_192_GMAC: 1635 thash = &auth_hash_gmac_aes_192; 1636 break; 1637 case CRYPTO_AES_256_GMAC: 1638 thash = &auth_hash_gmac_aes_256; 1639 break; 1640 case CRYPTO_NULL_HMAC: 1641 thash = &auth_hash_null; 1642 break; 1643 default: 1644 DPRINTF("Invalid mac %d\n", sop->mac); 1645 return EINVAL; 1646 } 1647 1648 memset(&crie, 0, sizeof(crie)); 1649 memset(&cria, 0, sizeof(cria)); 1650 memset(&cric, 0, sizeof(cric)); 1651 1652 if (tcomp) { 1653 cric.cri_alg = tcomp->type; 1654 cric.cri_klen = 0; 1655 DPRINTF("tcomp->type = %d\n", tcomp->type); 1656 1657 crihead = &cric; 1658 if (txform) { 1659 cric.cri_next = &crie; 1660 } else if (thash) { 1661 cric.cri_next = &cria; 1662 } 1663 } 1664 1665 if (txform) { 1666 crie.cri_alg = txform->type; 1667 crie.cri_klen = sop->keylen * 8; 1668 if (sop->keylen > txform->maxkey || 1669 sop->keylen < txform->minkey) { 1670 DPRINTF("keylen %d not in [%d,%d]\n", 1671 sop->keylen, txform->minkey, txform->maxkey); 1672 error = EINVAL; 1673 goto bail; 1674 } 1675 1676 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1677 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1678 goto bail; 1679 if (!crihead) { 1680 crihead = &crie; 1681 } 1682 if (thash) 1683 crie.cri_next = &cria; 1684 } 1685 1686 if (thash) { 1687 cria.cri_alg = thash->type; 1688 cria.cri_klen = sop->mackeylen * 8; 1689 if (sop->mackeylen != thash->keysize) { 1690 DPRINTF("mackeylen %d != keysize %d\n", 1691 sop->mackeylen, thash->keysize); 1692 error = EINVAL; 1693 goto bail; 1694 } 1695 if (cria.cri_klen) { 1696 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1697 M_WAITOK); 1698 if ((error = copyin(sop->mackey, cria.cri_key, 1699 cria.cri_klen / 8))) { 1700 goto bail; 1701 } 1702 } 1703 if (!crihead) { 1704 crihead = &cria; 1705 } 1706 } 1707 1708 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1709 if (!error) { 1710 DPRINTF("got session %d\n", (uint32_t)sid); 1711 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1712 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1713 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1714 if (cse != NULL) { 1715 sop->ses = cse->ses; 1716 } else { 1717 DPRINTF("csecreate failed\n"); 1718 crypto_freesession(sid); 1719 error = EINVAL; 1720 } 1721 } else { 1722 DPRINTF("SIOCSESSION violates kernel parameters %d\n", error); 1723 } 1724 bail: 1725 if (error) { 1726 if (crie.cri_key) { 1727 memset(crie.cri_key, 0, crie.cri_klen / 8); 1728 free(crie.cri_key, M_XDATA); 1729 } 1730 if (cria.cri_key) { 1731 memset(cria.cri_key, 0, cria.cri_klen / 8); 1732 free(cria.cri_key, M_XDATA); 1733 } 1734 } 1735 return error; 1736 } 1737 1738 int 1739 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1740 int count) 1741 { 1742 int i; 1743 1744 for (i = 0; i < count; i++, sn_ops++) { 1745 struct session_op s_op; 1746 s_op.cipher = sn_ops->cipher; 1747 s_op.mac = sn_ops->mac; 1748 s_op.keylen = sn_ops->keylen; 1749 s_op.key = sn_ops->key; 1750 s_op.mackeylen = sn_ops->mackeylen; 1751 s_op.mackey = sn_ops->mackey; 1752 1753 sn_ops->status = cryptodev_session(fcr, &s_op); 1754 sn_ops->ses = s_op.ses; 1755 } 1756 1757 return 0; 1758 } 1759 1760 static int 1761 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1762 { 1763 struct csession *cse; 1764 int req, error = 0; 1765 1766 mutex_enter(&cryptodev_mtx); 1767 for(req = 0; req < count; req++) { 1768 cse = csefind(fcr, sesid[req]); 1769 if (cse == NULL) 1770 continue; 1771 csedelete(fcr, cse); 1772 mutex_exit(&cryptodev_mtx); 1773 error = csefree(cse); 1774 mutex_enter(&cryptodev_mtx); 1775 } 1776 mutex_exit(&cryptodev_mtx); 1777 return error; 1778 } 1779 1780 /* 1781 * collect as many completed requests as are availble, or count completed 1782 * requests whichever is less. 1783 * return the number of requests. 1784 */ 1785 static int 1786 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1787 int count) 1788 { 1789 struct cryptop *crp = NULL; 1790 struct cryptkop *krp = NULL; 1791 struct csession *cse; 1792 int i, size, req = 0; 1793 int completed=0; 1794 1795 /* On queue so nobody else can grab them 1796 * and copyout can be delayed-- no locking */ 1797 TAILQ_HEAD(, cryptop) crp_delfree_q = 1798 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1799 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1800 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1801 1802 /* at this point we do not know which response user is requesting for 1803 * (symmetric or asymmetric) so we copyout one from each i.e if the 1804 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1805 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1806 1807 /* pull off a list of requests while protected from changes */ 1808 mutex_enter(&cryptodev_mtx); 1809 while (req < count) { 1810 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1811 if (crp) { 1812 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1813 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1814 cse = (struct csession *)crp->crp_opaque; 1815 1816 /* see if the session is still valid */ 1817 cse = csefind(fcr, cse->ses); 1818 if (cse != NULL) { 1819 crypt_res[req].status = 0; 1820 } else { 1821 DPRINTF("csefind failed\n"); 1822 crypt_res[req].status = EINVAL; 1823 } 1824 req++; 1825 } 1826 if(req < count) { 1827 crypt_res[req].status = 0; 1828 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1829 if (krp) { 1830 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1831 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1832 req++; 1833 } 1834 } 1835 } 1836 mutex_exit(&cryptodev_mtx); 1837 1838 /* now do all the work outside the mutex */ 1839 for(req=0; req < count ;) { 1840 crp = TAILQ_FIRST(&crp_delfree_q); 1841 if (crp) { 1842 if (crypt_res[req].status != 0) { 1843 /* csefind failed during collection */ 1844 goto bail; 1845 } 1846 cse = (struct csession *)crp->crp_opaque; 1847 crypt_res[req].reqid = crp->crp_reqid; 1848 crypt_res[req].opaque = crp->crp_usropaque; 1849 completed++; 1850 1851 if (crp->crp_etype != 0) { 1852 crypt_res[req].status = crp->crp_etype; 1853 goto bail; 1854 } 1855 1856 if (cse->error) { 1857 crypt_res[req].status = cse->error; 1858 goto bail; 1859 } 1860 1861 if (crp->dst && (crypt_res[req].status = 1862 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1863 crp->len))) 1864 goto bail; 1865 1866 if (crp->mac && (crypt_res[req].status = 1867 copyout(crp->crp_mac, crp->mac, 1868 cse->thash->authsize))) 1869 goto bail; 1870 1871 bail: 1872 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1873 kmem_free(crp->uio.uio_iov[0].iov_base, 1874 crp->uio.uio_iov[0].iov_len); 1875 crypto_freereq(crp); 1876 req++; 1877 } 1878 1879 if (req < count) { 1880 krp = TAILQ_FIRST(&krp_delfree_q); 1881 if (krp) { 1882 crypt_res[req].reqid = krp->krp_reqid; 1883 crypt_res[req].opaque = krp->krp_usropaque; 1884 completed++; 1885 if (krp->krp_status != 0) { 1886 DPRINTF("krp->krp_status 0x%08x\n", 1887 krp->krp_status); 1888 crypt_res[req].status = krp->krp_status; 1889 goto fail; 1890 } 1891 1892 for (i = krp->krp_iparams; i < krp->krp_iparams 1893 + krp->krp_oparams; i++) { 1894 size = (krp->krp_param[i].crp_nbits 1895 + 7) / 8; 1896 if (size == 0) 1897 continue; 1898 crypt_res[req].status = copyout 1899 (krp->krp_param[i].crp_p, 1900 krp->crk_param[i].crp_p, size); 1901 if (crypt_res[req].status) { 1902 DPRINTF("copyout oparam %d failed, " 1903 "error=%d\n", 1904 i - krp->krp_iparams, 1905 crypt_res[req].status); 1906 goto fail; 1907 } 1908 } 1909 fail: 1910 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1911 /* not sure what to do for this */ 1912 /* kop[req].crk_status = krp->krp_status; */ 1913 for (i = 0; i < CRK_MAXPARAM; i++) { 1914 struct crparam *kp = &(krp->krp_param[i]); 1915 if (kp->crp_p) { 1916 size = (kp->crp_nbits + 7) / 8; 1917 KASSERT(size > 0); 1918 (void)memset(kp->crp_p, 0, size); 1919 kmem_free(kp->crp_p, size); 1920 } 1921 } 1922 cv_destroy(&krp->krp_cv); 1923 crypto_kfreereq(krp); 1924 req++; 1925 } 1926 } 1927 } 1928 1929 return completed; 1930 } 1931 1932 static int 1933 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1934 { 1935 struct cryptop *crp = NULL, *cnext; 1936 struct cryptkop *krp = NULL, *knext; 1937 struct csession *cse; 1938 int i, size, req = 0; 1939 1940 mutex_enter(&cryptodev_mtx); 1941 /* Here we dont know for which request the user is requesting the 1942 * response so checking in both the queues */ 1943 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1944 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1945 cse = (struct csession *)crp->crp_opaque; 1946 crypt_res->opaque = crp->crp_usropaque; 1947 cse = csefind(fcr, cse->ses); 1948 if (cse == NULL) { 1949 DPRINTF("csefind failed\n"); 1950 crypt_res->status = EINVAL; 1951 goto bail; 1952 } 1953 1954 if (crp->crp_etype != 0) { 1955 crypt_res->status = crp->crp_etype; 1956 goto bail; 1957 } 1958 1959 if (cse->error) { 1960 crypt_res->status = cse->error; 1961 goto bail; 1962 } 1963 1964 if (crp->dst && (crypt_res->status = 1965 copyout(crp->uio.uio_iov[0].iov_base, 1966 crp->dst, crp->len))) 1967 goto bail; 1968 1969 if (crp->mac && (crypt_res->status = 1970 copyout(crp->crp_mac, crp->mac, 1971 cse->thash->authsize))) 1972 goto bail; 1973 bail: 1974 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1975 1976 mutex_exit(&cryptodev_mtx); 1977 crypto_freereq(crp); 1978 return 0; 1979 } 1980 } 1981 1982 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1983 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1984 crypt_res[req].opaque = krp->krp_usropaque; 1985 if (krp->krp_status != 0) { 1986 DPRINTF("krp->krp_status 0x%08x\n", 1987 krp->krp_status); 1988 crypt_res[req].status = krp->krp_status; 1989 goto fail; 1990 } 1991 1992 for (i = krp->krp_iparams; i < krp->krp_iparams + 1993 krp->krp_oparams; i++) { 1994 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1995 if (size == 0) 1996 continue; 1997 crypt_res[req].status = copyout( 1998 krp->krp_param[i].crp_p, 1999 krp->crk_param[i].crp_p, size); 2000 if (crypt_res[req].status) { 2001 DPRINTF("copyout oparam " 2002 "%d failed, error=%d\n", 2003 i - krp->krp_iparams, 2004 crypt_res[req].status); 2005 goto fail; 2006 } 2007 } 2008 fail: 2009 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 2010 mutex_exit(&cryptodev_mtx); 2011 /* not sure what to do for this */ 2012 /* kop[req].crk_status = krp->krp_status; */ 2013 for (i = 0; i < CRK_MAXPARAM; i++) { 2014 struct crparam *kp = &(krp->krp_param[i]); 2015 if (kp->crp_p) { 2016 size = (kp->crp_nbits + 7) / 8; 2017 KASSERT(size > 0); 2018 memset(kp->crp_p, 0, size); 2019 kmem_free(kp->crp_p, size); 2020 } 2021 } 2022 cv_destroy(&krp->krp_cv); 2023 crypto_kfreereq(krp); 2024 return 0; 2025 } 2026 } 2027 mutex_exit(&cryptodev_mtx); 2028 return EINPROGRESS; 2029 } 2030 2031 static int 2032 cryptof_stat(struct file *fp, struct stat *st) 2033 { 2034 struct fcrypt *fcr = fp->f_fcrypt; 2035 2036 (void)memset(st, 0, sizeof(*st)); 2037 2038 mutex_enter(&cryptodev_mtx); 2039 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2040 st->st_atimespec = fcr->atime; 2041 st->st_mtimespec = fcr->mtime; 2042 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2043 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2044 st->st_gid = kauth_cred_getegid(fp->f_cred); 2045 mutex_exit(&cryptodev_mtx); 2046 2047 return 0; 2048 } 2049 2050 static int 2051 cryptof_poll(struct file *fp, int events) 2052 { 2053 struct fcrypt *fcr = fp->f_fcrypt; 2054 int revents = 0; 2055 2056 if (!(events & (POLLIN | POLLRDNORM))) { 2057 /* only support read and POLLIN */ 2058 return 0; 2059 } 2060 2061 mutex_enter(&cryptodev_mtx); 2062 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2063 /* no completed requests pending, save the poll for later */ 2064 selrecord(curlwp, &fcr->sinfo); 2065 } else { 2066 /* let the app(s) know that there are completed requests */ 2067 revents = events & (POLLIN | POLLRDNORM); 2068 } 2069 mutex_exit(&cryptodev_mtx); 2070 2071 return revents; 2072 } 2073 2074 /* 2075 * Pseudo-device initialization routine for /dev/crypto 2076 */ 2077 void 2078 cryptoattach(int num) 2079 { 2080 crypto_init(); 2081 2082 mutex_init(&cryptodev_mtx, MUTEX_DEFAULT, IPL_NONE); 2083 2084 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2085 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2086 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2087 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2088 2089 /* 2090 * Preallocate space for 64 users, with 5 sessions each. 2091 * (consider that a TLS protocol session requires at least 2092 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2093 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2094 * consuming one session here for each algorithm. 2095 */ 2096 pool_prime(&fcrpl, 64); 2097 pool_prime(&csepl, 64 * 5); 2098 } 2099 2100 void crypto_attach(device_t, device_t, void *); 2101 2102 void 2103 crypto_attach(device_t parent, device_t self, void * opaque) 2104 { 2105 2106 cryptoattach(0); 2107 } 2108 2109 int crypto_detach(device_t, int); 2110 2111 int 2112 crypto_detach(device_t self, int num) 2113 { 2114 2115 pool_destroy(&fcrpl); 2116 pool_destroy(&csepl); 2117 2118 mutex_destroy(&cryptodev_mtx); 2119 2120 return 0; 2121 } 2122 2123 int crypto_match(device_t, cfdata_t, void *); 2124 2125 int 2126 crypto_match(device_t parent, cfdata_t data, void *opaque) 2127 { 2128 2129 return 1; 2130 } 2131 2132 MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto"); 2133 2134 CFDRIVER_DECL(crypto, DV_DULL, NULL); 2135 2136 CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, 2137 NULL, NULL, NULL); 2138 2139 #ifdef _MODULE 2140 static int cryptoloc[] = { -1, -1 }; 2141 2142 static struct cfdata crypto_cfdata[] = { 2143 { 2144 .cf_name = "crypto", 2145 .cf_atname = "crypto", 2146 .cf_unit = 0, 2147 .cf_fstate = 0, 2148 .cf_loc = cryptoloc, 2149 .cf_flags = 0, 2150 .cf_pspec = NULL, 2151 }, 2152 { NULL, NULL, 0, 0, NULL, 0, NULL } 2153 }; 2154 #endif 2155 2156 static int 2157 crypto_modcmd(modcmd_t cmd, void *arg) 2158 { 2159 int error = 0; 2160 #ifdef _MODULE 2161 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 2162 #endif 2163 2164 switch (cmd) { 2165 case MODULE_CMD_INIT: 2166 #ifdef _MODULE 2167 2168 error = config_cfdriver_attach(&crypto_cd); 2169 if (error) { 2170 return error; 2171 } 2172 2173 error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); 2174 if (error) { 2175 config_cfdriver_detach(&crypto_cd); 2176 aprint_error("%s: unable to register cfattach\n", 2177 crypto_cd.cd_name); 2178 2179 return error; 2180 } 2181 2182 error = config_cfdata_attach(crypto_cfdata, 1); 2183 if (error) { 2184 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2185 config_cfdriver_detach(&crypto_cd); 2186 aprint_error("%s: unable to register cfdata\n", 2187 crypto_cd.cd_name); 2188 2189 return error; 2190 } 2191 2192 error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, 2193 &crypto_cdevsw, &cmajor); 2194 if (error) { 2195 error = config_cfdata_detach(crypto_cfdata); 2196 if (error) { 2197 return error; 2198 } 2199 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2200 config_cfdriver_detach(&crypto_cd); 2201 aprint_error("%s: unable to register devsw\n", 2202 crypto_cd.cd_name); 2203 2204 return error; 2205 } 2206 2207 (void)config_attach_pseudo(crypto_cfdata); 2208 #endif 2209 2210 return error; 2211 case MODULE_CMD_FINI: 2212 #ifdef _MODULE 2213 error = config_cfdata_detach(crypto_cfdata); 2214 if (error) { 2215 return error; 2216 } 2217 2218 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2219 config_cfdriver_detach(&crypto_cd); 2220 devsw_detach(NULL, &crypto_cdevsw); 2221 #endif 2222 2223 return error; 2224 #ifdef _MODULE 2225 case MODULE_CMD_AUTOUNLOAD: 2226 #if 0 /* 2227 * XXX Completely disable auto-unload for now, since there is still 2228 * XXX a (small) window where in-module ref-counting doesn't help 2229 */ 2230 if (crypto_refcount != 0) 2231 #endif 2232 return EBUSY; 2233 /* FALLTHROUGH */ 2234 #endif 2235 default: 2236 return ENOTTY; 2237 } 2238 } 2239
Indexes created Wed Sep 24 22:09:59 GMT 2025