cryptodev.c revision 1.85.2.4
1 /* $NetBSD: cryptodev.c,v 1.85.2.4 2017/04/26 02:53:30 pgoyette Exp $ */ 2 /* $FreeBSD: src/sys/opencrypto/cryptodev.c,v 1.4.2.4 2003/06/03 00:09:02 sam Exp $ */ 3 /* $OpenBSD: cryptodev.c,v 1.53 2002/07/10 22:21:30 mickey Exp $ */ 4 5 /*- 6 * Copyright (c) 2008 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Coyote Point Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 2001 Theo de Raadt 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * Effort sponsored in part by the Defense Advanced Research Projects 61 * Agency (DARPA) and Air Force Research Laboratory, Air Force 62 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 63 * 64 */ 65 66 #include <sys/cdefs.h> 67 __KERNEL_RCSID(0, "$NetBSD: cryptodev.c,v 1.85.2.4 2017/04/26 02:53:30 pgoyette Exp $"); 68 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/kmem.h> 72 #include <sys/malloc.h> 73 #include <sys/mbuf.h> 74 #include <sys/pool.h> 75 #include <sys/sysctl.h> 76 #include <sys/file.h> 77 #include <sys/filedesc.h> 78 #include <sys/errno.h> 79 #include <sys/md5.h> 80 #include <sys/sha1.h> 81 #include <sys/conf.h> 82 #include <sys/device.h> 83 #include <sys/kauth.h> 84 #include <sys/select.h> 85 #include <sys/poll.h> 86 #include <sys/atomic.h> 87 #include <sys/stat.h> 88 #include <sys/module.h> 89 #include <sys/localcount.h> 90 91 #ifdef _KERNEL_OPT 92 #include "opt_ocf.h" 93 #include "opt_compat_netbsd.h" 94 #endif 95 96 #include <opencrypto/cryptodev.h> 97 #include <opencrypto/cryptodev_internal.h> 98 #include <opencrypto/xform.h> 99 100 #include "ioconf.h" 101 102 kmutex_t crypto_mtx; 103 104 struct csession { 105 TAILQ_ENTRY(csession) next; 106 u_int64_t sid; 107 u_int32_t ses; 108 109 u_int32_t cipher; /* note: shares name space in crd_alg */ 110 const struct enc_xform *txform; 111 u_int32_t mac; /* note: shares name space in crd_alg */ 112 const struct auth_hash *thash; 113 u_int32_t comp_alg; /* note: shares name space in crd_alg */ 114 const struct comp_algo *tcomp; 115 116 void * key; 117 int keylen; 118 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 119 120 void * mackey; 121 int mackeylen; 122 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 123 124 struct iovec iovec[1]; /* user requests never have more */ 125 struct uio uio; 126 int error; 127 }; 128 129 struct fcrypt { 130 TAILQ_HEAD(csessionlist, csession) csessions; 131 TAILQ_HEAD(crprethead, cryptop) crp_ret_mq; 132 TAILQ_HEAD(krprethead, cryptkop) crp_ret_mkq; 133 int sesn; 134 struct selinfo sinfo; 135 u_int32_t requestid; 136 struct timespec atime; 137 struct timespec mtime; 138 struct timespec btime; 139 }; 140 141 /* For our fixed-size allocations */ 142 static struct pool fcrpl; 143 static struct pool csepl; 144 145 /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ 146 static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l); 147 static int cryptoread(dev_t dev, struct uio *uio, int ioflag); 148 static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); 149 static int cryptoselect(dev_t dev, int rw, struct lwp *l); 150 151 static int crypto_refcount = 0; /* Prevent detaching while in use */ 152 153 /* Declaration of cloned-device (per-ctxt) entrypoints */ 154 static int cryptof_read(struct file *, off_t *, struct uio *, 155 kauth_cred_t, int); 156 static int cryptof_write(struct file *, off_t *, struct uio *, 157 kauth_cred_t, int); 158 static int cryptof_ioctl(struct file *, u_long, void *); 159 static int cryptof_close(struct file *); 160 static int cryptof_poll(struct file *, int); 161 static int cryptof_stat(struct file *, struct stat *); 162 163 static const struct fileops cryptofops = { 164 .fo_read = cryptof_read, 165 .fo_write = cryptof_write, 166 .fo_ioctl = cryptof_ioctl, 167 .fo_fcntl = fnullop_fcntl, 168 .fo_poll = cryptof_poll, 169 .fo_stat = cryptof_stat, 170 .fo_close = cryptof_close, 171 .fo_kqfilter = fnullop_kqfilter, 172 .fo_restart = fnullop_restart, 173 }; 174 175 struct csession *cryptodev_csefind(struct fcrypt *, u_int); 176 static struct csession *csefind(struct fcrypt *, u_int); 177 static int csedelete(struct fcrypt *, struct csession *); 178 static struct csession *cseadd(struct fcrypt *, struct csession *); 179 static struct csession *csecreate(struct fcrypt *, u_int64_t, void *, 180 u_int64_t, void *, u_int64_t, u_int32_t, u_int32_t, u_int32_t, 181 const struct enc_xform *, const struct auth_hash *, 182 const struct comp_algo *); 183 static int csefree(struct csession *); 184 185 static int cryptodev_key(struct crypt_kop *); 186 static int cryptodev_mkey(struct fcrypt *, struct crypt_n_kop *, int); 187 static int cryptodev_msessionfin(struct fcrypt *, int, u_int32_t *); 188 189 static int cryptodev_cb(void *); 190 static int cryptodevkey_cb(void *); 191 192 static int cryptodev_mcb(void *); 193 static int cryptodevkey_mcb(void *); 194 195 static int cryptodev_getmstatus(struct fcrypt *, struct crypt_result *, 196 int); 197 static int cryptodev_getstatus(struct fcrypt *, struct crypt_result *); 198 199 #ifdef COMPAT_50 200 extern int ocryptof_ioctl(struct file *, u_long, void *); 201 #endif 202 203 /* 204 * sysctl-able control variables for /dev/crypto now defined in crypto.c: 205 * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. 206 */ 207 208 /* ARGSUSED */ 209 int 210 cryptof_read(file_t *fp, off_t *poff, 211 struct uio *uio, kauth_cred_t cred, int flags) 212 { 213 return EIO; 214 } 215 216 /* ARGSUSED */ 217 int 218 cryptof_write(file_t *fp, off_t *poff, 219 struct uio *uio, kauth_cred_t cred, int flags) 220 { 221 return EIO; 222 } 223 224 /* ARGSUSED */ 225 int 226 cryptof_ioctl(struct file *fp, u_long cmd, void *data) 227 { 228 struct fcrypt *fcr = fp->f_fcrypt; 229 struct csession *cse; 230 struct session_op *sop; 231 struct session_n_op *snop; 232 struct crypt_op *cop; 233 struct crypt_mop *mop; 234 struct crypt_mkop *mkop; 235 struct crypt_n_op *cnop; 236 struct crypt_n_kop *knop; 237 struct crypt_sgop *sgop; 238 struct crypt_sfop *sfop; 239 struct cryptret *crypt_ret; 240 struct crypt_result *crypt_res; 241 u_int32_t ses; 242 u_int32_t *sesid; 243 int error = 0; 244 size_t count; 245 246 /* backwards compatibility */ 247 file_t *criofp; 248 struct fcrypt *criofcr; 249 int criofd; 250 251 mutex_enter(&crypto_mtx); 252 getnanotime(&fcr->atime); 253 mutex_exit(&crypto_mtx); 254 255 switch (cmd) { 256 case CRIOGET: /* XXX deprecated, remove after 5.0 */ 257 if ((error = fd_allocfile(&criofp, &criofd)) != 0) 258 return error; 259 criofcr = pool_get(&fcrpl, PR_WAITOK); 260 mutex_enter(&crypto_mtx); 261 TAILQ_INIT(&criofcr->csessions); 262 TAILQ_INIT(&criofcr->crp_ret_mq); 263 TAILQ_INIT(&criofcr->crp_ret_mkq); 264 selinit(&criofcr->sinfo); 265 266 /* 267 * Don't ever return session 0, to allow detection of 268 * failed creation attempts with multi-create ioctl. 269 */ 270 criofcr->sesn = 1; 271 criofcr->requestid = 1; 272 crypto_refcount++; 273 mutex_exit(&crypto_mtx); 274 (void)fd_clone(criofp, criofd, (FREAD|FWRITE), 275 &cryptofops, criofcr); 276 *(u_int32_t *)data = criofd; 277 return error; 278 break; 279 case CIOCGSESSION: 280 sop = (struct session_op *)data; 281 error = cryptodev_session(fcr, sop); 282 break; 283 case CIOCNGSESSION: 284 sgop = (struct crypt_sgop *)data; 285 snop = kmem_alloc((sgop->count * 286 sizeof(struct session_n_op)), KM_SLEEP); 287 error = copyin(sgop->sessions, snop, sgop->count * 288 sizeof(struct session_n_op)); 289 if (error) { 290 goto mbail; 291 } 292 293 mutex_enter(&crypto_mtx); 294 fcr->mtime = fcr->atime; 295 mutex_exit(&crypto_mtx); 296 error = cryptodev_msession(fcr, snop, sgop->count); 297 if (error) { 298 goto mbail; 299 } 300 301 error = copyout(snop, sgop->sessions, sgop->count * 302 sizeof(struct session_n_op)); 303 mbail: 304 kmem_free(snop, sgop->count * sizeof(struct session_n_op)); 305 break; 306 case CIOCFSESSION: 307 mutex_enter(&crypto_mtx); 308 fcr->mtime = fcr->atime; 309 ses = *(u_int32_t *)data; 310 cse = csefind(fcr, ses); 311 if (cse == NULL) { 312 mutex_exit(&crypto_mtx); 313 return EINVAL; 314 } 315 csedelete(fcr, cse); 316 mutex_exit(&crypto_mtx); 317 error = csefree(cse); 318 break; 319 case CIOCNFSESSION: 320 mutex_enter(&crypto_mtx); 321 fcr->mtime = fcr->atime; 322 mutex_exit(&crypto_mtx); 323 sfop = (struct crypt_sfop *)data; 324 sesid = kmem_alloc((sfop->count * sizeof(u_int32_t)), 325 KM_SLEEP); 326 error = copyin(sfop->sesid, sesid, 327 (sfop->count * sizeof(u_int32_t))); 328 if (!error) { 329 error = cryptodev_msessionfin(fcr, sfop->count, sesid); 330 } 331 kmem_free(sesid, (sfop->count * sizeof(u_int32_t))); 332 break; 333 case CIOCCRYPT: 334 mutex_enter(&crypto_mtx); 335 fcr->mtime = fcr->atime; 336 cop = (struct crypt_op *)data; 337 cse = csefind(fcr, cop->ses); 338 mutex_exit(&crypto_mtx); 339 if (cse == NULL) { 340 DPRINTF(("csefind failed\n")); 341 return EINVAL; 342 } 343 error = cryptodev_op(cse, cop, curlwp); 344 DPRINTF(("cryptodev_op error = %d\n", error)); 345 break; 346 case CIOCNCRYPTM: 347 mutex_enter(&crypto_mtx); 348 fcr->mtime = fcr->atime; 349 mutex_exit(&crypto_mtx); 350 mop = (struct crypt_mop *)data; 351 cnop = kmem_alloc((mop->count * sizeof(struct crypt_n_op)), 352 KM_SLEEP); 353 error = copyin(mop->reqs, cnop, 354 (mop->count * sizeof(struct crypt_n_op))); 355 if(!error) { 356 error = cryptodev_mop(fcr, cnop, mop->count, curlwp); 357 if (!error) { 358 error = copyout(cnop, mop->reqs, 359 (mop->count * sizeof(struct crypt_n_op))); 360 } 361 } 362 kmem_free(cnop, (mop->count * sizeof(struct crypt_n_op))); 363 break; 364 case CIOCKEY: 365 error = cryptodev_key((struct crypt_kop *)data); 366 DPRINTF(("cryptodev_key error = %d\n", error)); 367 break; 368 case CIOCNFKEYM: 369 mutex_enter(&crypto_mtx); 370 fcr->mtime = fcr->atime; 371 mutex_exit(&crypto_mtx); 372 mkop = (struct crypt_mkop *)data; 373 knop = kmem_alloc((mkop->count * sizeof(struct crypt_n_kop)), 374 KM_SLEEP); 375 error = copyin(mkop->reqs, knop, 376 (mkop->count * sizeof(struct crypt_n_kop))); 377 if (!error) { 378 error = cryptodev_mkey(fcr, knop, mkop->count); 379 if (!error) 380 error = copyout(knop, mkop->reqs, 381 (mkop->count * sizeof(struct crypt_n_kop))); 382 } 383 kmem_free(knop, (mkop->count * sizeof(struct crypt_n_kop))); 384 break; 385 case CIOCASYMFEAT: 386 error = crypto_getfeat((int *)data); 387 break; 388 case CIOCNCRYPTRETM: 389 mutex_enter(&crypto_mtx); 390 fcr->mtime = fcr->atime; 391 mutex_exit(&crypto_mtx); 392 crypt_ret = (struct cryptret *)data; 393 count = crypt_ret->count; 394 crypt_res = kmem_alloc((count * sizeof(struct crypt_result)), 395 KM_SLEEP); 396 error = copyin(crypt_ret->results, crypt_res, 397 (count * sizeof(struct crypt_result))); 398 if (error) 399 goto reterr; 400 crypt_ret->count = cryptodev_getmstatus(fcr, crypt_res, 401 crypt_ret->count); 402 /* sanity check count */ 403 if (crypt_ret->count > count) { 404 printf("%s.%d: error returned count %zd > original " 405 " count %zd\n", 406 __FILE__, __LINE__, crypt_ret->count, count); 407 crypt_ret->count = count; 408 409 } 410 error = copyout(crypt_res, crypt_ret->results, 411 (crypt_ret->count * sizeof(struct crypt_result))); 412 reterr: 413 kmem_free(crypt_res, (count * sizeof(struct crypt_result))); 414 break; 415 case CIOCNCRYPTRET: 416 error = cryptodev_getstatus(fcr, (struct crypt_result *)data); 417 break; 418 default: 419 #ifdef COMPAT_50 420 /* Check for backward compatible commands */ 421 error = ocryptof_ioctl(fp, cmd, data); 422 #else 423 return EINVAL; 424 #endif 425 } 426 return error; 427 } 428 429 int 430 cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l) 431 { 432 struct cryptop *crp = NULL; 433 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 434 int error; 435 int iov_len = cop->len; 436 int flags=0; 437 int dst_len; /* copyout size */ 438 439 if (cop->len > 256*1024-4) 440 return E2BIG; 441 442 if (cse->txform) { 443 if (cop->len < cse->txform->blocksize 444 + (cop->iv ? 0 : cse->txform->ivsize) || 445 (cop->len - (cop->iv ? 0 : cse->txform->ivsize)) 446 % cse->txform->blocksize != 0) 447 return EINVAL; 448 } 449 450 DPRINTF(("cryptodev_op[%u]: iov_len %d\n", 451 CRYPTO_SESID2LID(cse->sid), iov_len)); 452 if ((cse->tcomp) && cop->dst_len) { 453 if (iov_len < cop->dst_len) { 454 /* Need larger iov to deal with decompress */ 455 iov_len = cop->dst_len; 456 } 457 DPRINTF(("cryptodev_op: iov_len -> %d for decompress\n", iov_len)); 458 } 459 460 (void)memset(&cse->uio, 0, sizeof(cse->uio)); 461 cse->uio.uio_iovcnt = 1; 462 cse->uio.uio_resid = 0; 463 cse->uio.uio_rw = UIO_WRITE; 464 cse->uio.uio_iov = cse->iovec; 465 UIO_SETUP_SYSSPACE(&cse->uio); 466 memset(&cse->iovec, 0, sizeof(cse->iovec)); 467 468 /* the iov needs to be big enough to handle the uncompressed 469 * data.... */ 470 cse->uio.uio_iov[0].iov_len = iov_len; 471 if (iov_len > 0) 472 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 473 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 474 DPRINTF(("cryptodev_op[%u]: uio.iov_base %p malloced %d bytes\n", 475 CRYPTO_SESID2LID(cse->sid), 476 cse->uio.uio_iov[0].iov_base, iov_len)); 477 478 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 479 if (crp == NULL) { 480 error = ENOMEM; 481 goto bail; 482 } 483 DPRINTF(("cryptodev_op[%u]: crp %p\n", 484 CRYPTO_SESID2LID(cse->sid), crp)); 485 486 /* crds are always ordered tcomp, thash, then txform */ 487 /* with optional missing links */ 488 489 /* XXX: If we're going to compress then hash or encrypt, we need 490 * to be able to pass on the new size of the data. 491 */ 492 493 if (cse->tcomp) { 494 crdc = crp->crp_desc; 495 } 496 497 if (cse->thash) { 498 crda = crdc ? crdc->crd_next : crp->crp_desc; 499 if (cse->txform && crda) 500 crde = crda->crd_next; 501 } else { 502 if (cse->txform) { 503 crde = crdc ? crdc->crd_next : crp->crp_desc; 504 } else if (!cse->tcomp) { 505 error = EINVAL; 506 goto bail; 507 } 508 } 509 510 DPRINTF(("ocf[%u]: iov_len %zu, cop->len %u\n", 511 CRYPTO_SESID2LID(cse->sid), 512 cse->uio.uio_iov[0].iov_len, 513 cop->len)); 514 515 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 516 { 517 printf("copyin failed %s %d \n", (char *)cop->src, error); 518 goto bail; 519 } 520 521 if (crdc) { 522 switch (cop->op) { 523 case COP_COMP: 524 crdc->crd_flags |= CRD_F_COMP; 525 break; 526 case COP_DECOMP: 527 crdc->crd_flags &= ~CRD_F_COMP; 528 break; 529 default: 530 break; 531 } 532 /* more data to follow? */ 533 if (cop->flags & COP_F_MORE) { 534 flags |= CRYPTO_F_MORE; 535 } 536 crdc->crd_len = cop->len; 537 crdc->crd_inject = 0; 538 539 crdc->crd_alg = cse->comp_alg; 540 crdc->crd_key = NULL; 541 crdc->crd_klen = 0; 542 DPRINTF(("cryptodev_op[%u]: crdc setup for comp_alg %d.\n", 543 CRYPTO_SESID2LID(cse->sid), crdc->crd_alg)); 544 } 545 546 if (crda) { 547 crda->crd_skip = 0; 548 crda->crd_len = cop->len; 549 crda->crd_inject = 0; /* ??? */ 550 551 crda->crd_alg = cse->mac; 552 crda->crd_key = cse->mackey; 553 crda->crd_klen = cse->mackeylen * 8; 554 DPRINTF(("cryptodev_op: crda setup for mac %d.\n", crda->crd_alg)); 555 } 556 557 if (crde) { 558 switch (cop->op) { 559 case COP_ENCRYPT: 560 crde->crd_flags |= CRD_F_ENCRYPT; 561 break; 562 case COP_DECRYPT: 563 crde->crd_flags &= ~CRD_F_ENCRYPT; 564 break; 565 default: 566 break; 567 } 568 crde->crd_len = cop->len; 569 crde->crd_inject = 0; 570 571 if (cse->cipher == CRYPTO_AES_GCM_16 && crda) 572 crda->crd_len = 0; 573 else if (cse->cipher == CRYPTO_AES_GMAC) 574 crde->crd_len = 0; 575 576 crde->crd_alg = cse->cipher; 577 crde->crd_key = cse->key; 578 crde->crd_klen = cse->keylen * 8; 579 DPRINTF(("cryptodev_op: crde setup for cipher %d.\n", crde->crd_alg)); 580 } 581 582 583 crp->crp_ilen = cop->len; 584 /* 585 * The request is flagged as CRYPTO_F_USER as long as it is running 586 * in the user IOCTL thread. However, whether the request completes 587 * immediately or belatedly is depends on the used encryption driver. 588 */ 589 crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | CRYPTO_F_USER | 590 flags; 591 crp->crp_buf = (void *)&cse->uio; 592 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 593 crp->crp_sid = cse->sid; 594 crp->crp_opaque = (void *)cse; 595 596 if (cop->iv) { 597 if (crde == NULL) { 598 error = EINVAL; 599 goto bail; 600 } 601 if (cse->txform->ivsize == 0) { 602 error = EINVAL; 603 goto bail; 604 } 605 if ((error = copyin(cop->iv, cse->tmp_iv, 606 cse->txform->ivsize))) 607 goto bail; 608 (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); 609 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 610 crde->crd_skip = 0; 611 } else if (crde) { 612 if (cse->txform->ivsize == 0) { 613 crde->crd_skip = 0; 614 } else { 615 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 616 crde->crd_flags |= CRD_F_IV_PRESENT; 617 crde->crd_skip = cse->txform->ivsize; 618 crde->crd_len -= cse->txform->ivsize; 619 } 620 } 621 622 if (cop->mac) { 623 if (crda == NULL) { 624 error = EINVAL; 625 goto bail; 626 } 627 crp->crp_mac=cse->tmp_mac; 628 } 629 630 cv_init(&crp->crp_cv, "crydev"); 631 632 /* 633 * XXX there was a comment here which said that we went to 634 * XXX splcrypto() but needed to only if CRYPTO_F_CBIMM, 635 * XXX disabled on NetBSD since 1.6O due to a race condition. 636 * XXX But crypto_dispatch went to splcrypto() itself! (And 637 * XXX now takes the crypto_mtx mutex itself). We do, however, 638 * XXX need to hold the mutex across the call to cv_wait(). 639 * XXX (should we arrange for crypto_dispatch to return to 640 * XXX us with it held? it seems quite ugly to do so.) 641 */ 642 #ifdef notyet 643 eagain: 644 #endif 645 error = crypto_dispatch(crp); 646 mutex_enter(&crypto_mtx); 647 648 /* 649 * Don't touch crp before returned by any error or recieved 650 * cv_signal(&crp->crp_cv). It is required to restructure locks. 651 */ 652 653 switch (error) { 654 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 655 case EAGAIN: 656 mutex_exit(&crypto_mtx); 657 goto eagain; 658 break; 659 #endif 660 case 0: 661 break; 662 default: 663 DPRINTF(("cryptodev_op: not waiting, error.\n")); 664 mutex_exit(&crypto_mtx); 665 cv_destroy(&crp->crp_cv); 666 goto bail; 667 } 668 669 while (!(crp->crp_flags & CRYPTO_F_DQRETQ)) { 670 DPRINTF(("cryptodev_op[%d]: sleeping on cv %p for crp %p\n", 671 (uint32_t)cse->sid, &crp->crp_cv, crp)); 672 cv_wait(&crp->crp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 673 } 674 mutex_exit(&crypto_mtx); 675 cv_destroy(&crp->crp_cv); 676 677 if (crp->crp_etype != 0) { 678 DPRINTF(("cryptodev_op: crp_etype %d\n", crp->crp_etype)); 679 error = crp->crp_etype; 680 goto bail; 681 } 682 683 if (cse->error) { 684 DPRINTF(("cryptodev_op: cse->error %d\n", cse->error)); 685 error = cse->error; 686 goto bail; 687 } 688 689 dst_len = crp->crp_ilen; 690 /* let the user know how much data was returned */ 691 if (crp->crp_olen) { 692 if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { 693 error = ENOSPC; 694 goto bail; 695 } 696 dst_len = cop->dst_len = crp->crp_olen; 697 } 698 699 if (cop->dst) { 700 DPRINTF(("cryptodev_op: copyout %d bytes to %p\n", dst_len, cop->dst)); 701 } 702 if (cop->dst && 703 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 704 { 705 DPRINTF(("cryptodev_op: copyout error %d\n", error)); 706 goto bail; 707 } 708 709 if (cop->mac && 710 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 711 DPRINTF(("cryptodev_op: mac copyout error %d\n", error)); 712 goto bail; 713 } 714 715 716 bail: 717 if (crp) { 718 crypto_freereq(crp); 719 } 720 if (cse->uio.uio_iov[0].iov_base) { 721 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 722 } 723 724 return error; 725 } 726 727 static int 728 cryptodev_cb(void *op) 729 { 730 struct cryptop *crp = (struct cryptop *) op; 731 struct csession *cse = (struct csession *)crp->crp_opaque; 732 int error = 0; 733 734 mutex_enter(&crypto_mtx); 735 cse->error = crp->crp_etype; 736 if (crp->crp_etype == EAGAIN) { 737 /* always drop mutex to call dispatch routine */ 738 mutex_exit(&crypto_mtx); 739 error = crypto_dispatch(crp); 740 mutex_enter(&crypto_mtx); 741 } 742 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 743 crp->crp_flags |= CRYPTO_F_DQRETQ; 744 cv_signal(&crp->crp_cv); 745 } 746 mutex_exit(&crypto_mtx); 747 return 0; 748 } 749 750 static int 751 cryptodev_mcb(void *op) 752 { 753 struct cryptop *crp = (struct cryptop *) op; 754 struct csession *cse = (struct csession *)crp->crp_opaque; 755 int error=0; 756 757 mutex_enter(&crypto_mtx); 758 cse->error = crp->crp_etype; 759 if (crp->crp_etype == EAGAIN) { 760 mutex_exit(&crypto_mtx); 761 error = crypto_dispatch(crp); 762 mutex_enter(&crypto_mtx); 763 } 764 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 765 cv_signal(&crp->crp_cv); 766 } 767 768 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 769 selnotify(&crp->fcrp->sinfo, 0, 0); 770 mutex_exit(&crypto_mtx); 771 return 0; 772 } 773 774 static int 775 cryptodevkey_cb(void *op) 776 { 777 struct cryptkop *krp = op; 778 779 mutex_enter(&crypto_mtx); 780 krp->krp_flags |= CRYPTO_F_DQRETQ; 781 cv_signal(&krp->krp_cv); 782 mutex_exit(&crypto_mtx); 783 return 0; 784 } 785 786 static int 787 cryptodevkey_mcb(void *op) 788 { 789 struct cryptkop *krp = op; 790 791 mutex_enter(&crypto_mtx); 792 cv_signal(&krp->krp_cv); 793 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 794 selnotify(&krp->fcrp->sinfo, 0, 0); 795 mutex_exit(&crypto_mtx); 796 return 0; 797 } 798 799 static int 800 cryptodev_key(struct crypt_kop *kop) 801 { 802 struct cryptkop *krp = NULL; 803 int error = EINVAL; 804 int in, out, size, i; 805 806 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 807 return EFBIG; 808 809 in = kop->crk_iparams; 810 out = kop->crk_oparams; 811 switch (kop->crk_op) { 812 case CRK_MOD_EXP: 813 if (in == 3 && out == 1) 814 break; 815 return EINVAL; 816 case CRK_MOD_EXP_CRT: 817 if (in == 6 && out == 1) 818 break; 819 return EINVAL; 820 case CRK_DSA_SIGN: 821 if (in == 5 && out == 2) 822 break; 823 return EINVAL; 824 case CRK_DSA_VERIFY: 825 if (in == 7 && out == 0) 826 break; 827 return EINVAL; 828 case CRK_DH_COMPUTE_KEY: 829 if (in == 3 && out == 1) 830 break; 831 return EINVAL; 832 case CRK_MOD_ADD: 833 if (in == 3 && out == 1) 834 break; 835 return EINVAL; 836 case CRK_MOD_ADDINV: 837 if (in == 2 && out == 1) 838 break; 839 return EINVAL; 840 case CRK_MOD_SUB: 841 if (in == 3 && out == 1) 842 break; 843 return EINVAL; 844 case CRK_MOD_MULT: 845 if (in == 3 && out == 1) 846 break; 847 return EINVAL; 848 case CRK_MOD_MULTINV: 849 if (in == 2 && out == 1) 850 break; 851 return EINVAL; 852 case CRK_MOD: 853 if (in == 2 && out == 1) 854 break; 855 return EINVAL; 856 default: 857 return EINVAL; 858 } 859 860 krp = pool_get(&cryptkop_pool, PR_WAITOK); 861 (void)memset(krp, 0, sizeof *krp); 862 cv_init(&krp->krp_cv, "crykdev"); 863 krp->krp_op = kop->crk_op; 864 krp->krp_status = kop->crk_status; 865 krp->krp_iparams = kop->crk_iparams; 866 krp->krp_oparams = kop->crk_oparams; 867 krp->krp_status = 0; 868 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 869 870 for (i = 0; i < CRK_MAXPARAM; i++) 871 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 872 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 873 size = (krp->krp_param[i].crp_nbits + 7) / 8; 874 if (size == 0) 875 continue; 876 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 877 if (i >= krp->krp_iparams) 878 continue; 879 error = copyin(kop->crk_param[i].crp_p, 880 krp->krp_param[i].crp_p, size); 881 if (error) 882 goto fail; 883 } 884 885 error = crypto_kdispatch(krp); 886 if (error != 0) { 887 goto fail; 888 } 889 890 mutex_enter(&crypto_mtx); 891 while (!(krp->krp_flags & CRYPTO_F_DQRETQ)) { 892 cv_wait(&krp->krp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 893 } 894 mutex_exit(&crypto_mtx); 895 896 if (krp->krp_status != 0) { 897 DPRINTF(("cryptodev_key: krp->krp_status 0x%08x\n", 898 krp->krp_status)); 899 error = krp->krp_status; 900 goto fail; 901 } 902 903 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 904 i++) { 905 size = (krp->krp_param[i].crp_nbits + 7) / 8; 906 if (size == 0) 907 continue; 908 error = copyout(krp->krp_param[i].crp_p, 909 kop->crk_param[i].crp_p, size); 910 if (error) { 911 DPRINTF(("cryptodev_key: copyout oparam %d failed, " 912 "error=%d\n", i-krp->krp_iparams, error)); 913 goto fail; 914 } 915 } 916 917 fail: 918 kop->crk_status = krp->krp_status; 919 for (i = 0; i < CRK_MAXPARAM; i++) { 920 struct crparam *kp = &(krp->krp_param[i]); 921 if (krp->krp_param[i].crp_p) { 922 size = (kp->crp_nbits + 7) / 8; 923 KASSERT(size > 0); 924 (void)memset(kp->crp_p, 0, size); 925 kmem_free(kp->crp_p, size); 926 } 927 } 928 cv_destroy(&krp->krp_cv); 929 pool_put(&cryptkop_pool, krp); 930 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 931 return error; 932 } 933 934 /* ARGSUSED */ 935 static int 936 cryptof_close(struct file *fp) 937 { 938 struct fcrypt *fcr = fp->f_fcrypt; 939 struct csession *cse; 940 941 mutex_enter(&crypto_mtx); 942 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 943 TAILQ_REMOVE(&fcr->csessions, cse, next); 944 mutex_exit(&crypto_mtx); 945 (void)csefree(cse); 946 mutex_enter(&crypto_mtx); 947 } 948 seldestroy(&fcr->sinfo); 949 fp->f_fcrypt = NULL; 950 crypto_refcount--; 951 mutex_exit(&crypto_mtx); 952 953 pool_put(&fcrpl, fcr); 954 return 0; 955 } 956 957 /* needed for compatibility module */ 958 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 959 { 960 return csefind(fcr, ses); 961 } 962 963 /* csefind: call with crypto_mtx held. */ 964 static struct csession * 965 csefind(struct fcrypt *fcr, u_int ses) 966 { 967 struct csession *cse, *cnext, *ret = NULL; 968 969 KASSERT(mutex_owned(&crypto_mtx)); 970 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 971 if (cse->ses == ses) 972 ret = cse; 973 974 return ret; 975 } 976 977 /* csedelete: call with crypto_mtx held. */ 978 static int 979 csedelete(struct fcrypt *fcr, struct csession *cse_del) 980 { 981 struct csession *cse, *cnext; 982 int ret = 0; 983 984 KASSERT(mutex_owned(&crypto_mtx)); 985 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 986 if (cse == cse_del) { 987 TAILQ_REMOVE(&fcr->csessions, cse, next); 988 ret = 1; 989 } 990 } 991 return ret; 992 } 993 994 static struct csession * 995 cseadd(struct fcrypt *fcr, struct csession *cse) 996 { 997 mutex_enter(&crypto_mtx); 998 /* don't let session ID wrap! */ 999 if (fcr->sesn + 1 == 0) return NULL; 1000 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 1001 cse->ses = fcr->sesn++; 1002 mutex_exit(&crypto_mtx); 1003 return cse; 1004 } 1005 1006 static struct csession * 1007 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 1008 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 1009 u_int32_t comp_alg, const struct enc_xform *txform, 1010 const struct auth_hash *thash, const struct comp_algo *tcomp) 1011 { 1012 struct csession *cse; 1013 1014 cse = pool_get(&csepl, PR_NOWAIT); 1015 if (cse == NULL) 1016 return NULL; 1017 cse->key = key; 1018 cse->keylen = keylen/8; 1019 cse->mackey = mackey; 1020 cse->mackeylen = mackeylen/8; 1021 cse->sid = sid; 1022 cse->cipher = cipher; 1023 cse->mac = mac; 1024 cse->comp_alg = comp_alg; 1025 cse->txform = txform; 1026 cse->thash = thash; 1027 cse->tcomp = tcomp; 1028 cse->error = 0; 1029 if (cseadd(fcr, cse)) 1030 return cse; 1031 else { 1032 pool_put(&csepl, cse); 1033 return NULL; 1034 } 1035 } 1036 1037 /* csefree: call with crypto_mtx held. */ 1038 static int 1039 csefree(struct csession *cse) 1040 { 1041 int error; 1042 1043 error = crypto_freesession(cse->sid); 1044 if (cse->key) 1045 free(cse->key, M_XDATA); 1046 if (cse->mackey) 1047 free(cse->mackey, M_XDATA); 1048 pool_put(&csepl, cse); 1049 return error; 1050 } 1051 1052 static int 1053 cryptoopen(dev_t dev, int flag, int mode, 1054 struct lwp *l) 1055 { 1056 file_t *fp; 1057 struct fcrypt *fcr; 1058 int fd, error; 1059 1060 if (crypto_usercrypto == 0) 1061 return ENXIO; 1062 1063 if ((error = fd_allocfile(&fp, &fd)) != 0) 1064 return error; 1065 1066 fcr = pool_get(&fcrpl, PR_WAITOK); 1067 getnanotime(&fcr->btime); 1068 fcr->atime = fcr->mtime = fcr->btime; 1069 mutex_enter(&crypto_mtx); 1070 TAILQ_INIT(&fcr->csessions); 1071 TAILQ_INIT(&fcr->crp_ret_mq); 1072 TAILQ_INIT(&fcr->crp_ret_mkq); 1073 selinit(&fcr->sinfo); 1074 /* 1075 * Don't ever return session 0, to allow detection of 1076 * failed creation attempts with multi-create ioctl. 1077 */ 1078 fcr->sesn = 1; 1079 fcr->requestid = 1; 1080 crypto_refcount++; 1081 mutex_exit(&crypto_mtx); 1082 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1083 } 1084 1085 static int 1086 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1087 { 1088 return EIO; 1089 } 1090 1091 static int 1092 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1093 { 1094 return EIO; 1095 } 1096 1097 int 1098 cryptoselect(dev_t dev, int rw, struct lwp *l) 1099 { 1100 return 0; 1101 } 1102 1103 /*static*/ 1104 struct cdevsw crypto_cdevsw = { 1105 DEVSW_MODULE_INIT 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(&crypto_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(&crypto_mtx); 1139 continue; 1140 } 1141 mutex_exit(&crypto_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(("cryptodev_mop: 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(("cryptodev_mop: 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(("cryptodev_mop[%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(("cryptodev_mop: 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(&crypto_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(&crypto_mtx); 1339 goto eagain; 1340 break; 1341 #endif 1342 case 0: 1343 break; 1344 default: 1345 DPRINTF(("cryptodev_op: not waiting, error.\n")); 1346 mutex_exit(&crypto_mtx); 1347 cv_destroy(&crp->crp_cv); 1348 goto bail; 1349 } 1350 1351 mutex_exit(&crypto_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 = pool_get(&cryptkop_pool, PR_WAITOK); 1443 (void)memset(krp, 0, sizeof *krp); 1444 cv_init(&krp->krp_cv, "crykdev"); 1445 krp->krp_op = kop[req].crk_op; 1446 krp->krp_status = kop[req].crk_status; 1447 krp->krp_iparams = kop[req].crk_iparams; 1448 krp->krp_oparams = kop[req].crk_oparams; 1449 krp->krp_status = 0; 1450 krp->krp_callback = 1451 (int (*) (struct cryptkop *)) cryptodevkey_mcb; 1452 (void)memcpy(krp->crk_param, kop[req].crk_param, 1453 sizeof(kop[req].crk_param)); 1454 1455 krp->krp_flags = CRYPTO_F_CBIMM; 1456 1457 for (i = 0; i < CRK_MAXPARAM; i++) 1458 krp->krp_param[i].crp_nbits = 1459 kop[req].crk_param[i].crp_nbits; 1460 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1461 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1462 if (size == 0) 1463 continue; 1464 krp->krp_param[i].crp_p = 1465 kmem_alloc(size, KM_SLEEP); 1466 if (i >= krp->krp_iparams) 1467 continue; 1468 kop[req].crk_status = 1469 copyin(kop[req].crk_param[i].crp_p, 1470 krp->krp_param[i].crp_p, size); 1471 if (kop[req].crk_status) 1472 goto fail; 1473 } 1474 krp->fcrp = fcr; 1475 1476 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1477 krp->krp_reqid = kop[req].crk_reqid; 1478 krp->krp_usropaque = kop[req].crk_opaque; 1479 1480 kop[req].crk_status = crypto_kdispatch(krp); 1481 if (kop[req].crk_status != 0) { 1482 goto fail; 1483 } 1484 1485 fail: 1486 if(kop[req].crk_status) { 1487 if (krp) { 1488 kop[req].crk_status = krp->krp_status; 1489 for (i = 0; i < CRK_MAXPARAM; i++) { 1490 struct crparam *kp = 1491 &(krp->krp_param[i]); 1492 if (kp->crp_p) { 1493 size = (kp->crp_nbits + 7) / 8; 1494 KASSERT(size > 0); 1495 memset(kp->crp_p, 0, size); 1496 kmem_free(kp->crp_p, size); 1497 } 1498 } 1499 cv_destroy(&krp->krp_cv); 1500 pool_put(&cryptkop_pool, krp); 1501 } 1502 } 1503 error = 0; 1504 } 1505 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 1506 return error; 1507 } 1508 1509 int 1510 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1511 { 1512 struct cryptoini cria, crie; 1513 struct cryptoini cric; /* compressor */ 1514 struct cryptoini *crihead = NULL; 1515 const struct enc_xform *txform = NULL; 1516 const struct auth_hash *thash = NULL; 1517 const struct comp_algo *tcomp = NULL; 1518 struct csession *cse; 1519 u_int64_t sid; 1520 int error = 0; 1521 1522 DPRINTF(("cryptodev_session() cipher=%d, mac=%d\n", sop->cipher, sop->mac)); 1523 1524 /* XXX there must be a way to not embed the list of xforms here */ 1525 switch (sop->cipher) { 1526 case 0: 1527 break; 1528 case CRYPTO_DES_CBC: 1529 txform = &enc_xform_des; 1530 break; 1531 case CRYPTO_3DES_CBC: 1532 txform = &enc_xform_3des; 1533 break; 1534 case CRYPTO_BLF_CBC: 1535 txform = &enc_xform_blf; 1536 break; 1537 case CRYPTO_CAST_CBC: 1538 txform = &enc_xform_cast5; 1539 break; 1540 case CRYPTO_SKIPJACK_CBC: 1541 txform = &enc_xform_skipjack; 1542 break; 1543 case CRYPTO_AES_CBC: 1544 txform = &enc_xform_rijndael128; 1545 break; 1546 case CRYPTO_CAMELLIA_CBC: 1547 txform = &enc_xform_camellia; 1548 break; 1549 case CRYPTO_AES_CTR: 1550 txform = &enc_xform_aes_ctr; 1551 break; 1552 case CRYPTO_AES_GCM_16: 1553 txform = &enc_xform_aes_gcm; 1554 break; 1555 case CRYPTO_AES_GMAC: 1556 txform = &enc_xform_aes_gmac; 1557 break; 1558 case CRYPTO_NULL_CBC: 1559 txform = &enc_xform_null; 1560 break; 1561 case CRYPTO_ARC4: 1562 txform = &enc_xform_arc4; 1563 break; 1564 default: 1565 DPRINTF(("Invalid cipher %d\n", sop->cipher)); 1566 return EINVAL; 1567 } 1568 1569 switch (sop->comp_alg) { 1570 case 0: 1571 break; 1572 case CRYPTO_DEFLATE_COMP: 1573 tcomp = &comp_algo_deflate; 1574 break; 1575 case CRYPTO_GZIP_COMP: 1576 tcomp = &comp_algo_gzip; 1577 DPRINTF(("cryptodev_session() tcomp for GZIP\n")); 1578 break; 1579 default: 1580 DPRINTF(("Invalid compression alg %d\n", sop->comp_alg)); 1581 return EINVAL; 1582 } 1583 1584 switch (sop->mac) { 1585 case 0: 1586 break; 1587 case CRYPTO_MD5_HMAC: 1588 thash = &auth_hash_hmac_md5; 1589 break; 1590 case CRYPTO_SHA1_HMAC: 1591 thash = &auth_hash_hmac_sha1; 1592 break; 1593 case CRYPTO_MD5_HMAC_96: 1594 thash = &auth_hash_hmac_md5_96; 1595 break; 1596 case CRYPTO_SHA1_HMAC_96: 1597 thash = &auth_hash_hmac_sha1_96; 1598 break; 1599 case CRYPTO_SHA2_HMAC: 1600 /* XXX switching on key length seems questionable */ 1601 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1602 thash = &auth_hash_hmac_sha2_256; 1603 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1604 thash = &auth_hash_hmac_sha2_384; 1605 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1606 thash = &auth_hash_hmac_sha2_512; 1607 } else { 1608 DPRINTF(("Invalid mackeylen %d\n", sop->mackeylen)); 1609 return EINVAL; 1610 } 1611 break; 1612 case CRYPTO_RIPEMD160_HMAC: 1613 thash = &auth_hash_hmac_ripemd_160; 1614 break; 1615 case CRYPTO_RIPEMD160_HMAC_96: 1616 thash = &auth_hash_hmac_ripemd_160_96; 1617 break; 1618 case CRYPTO_MD5: 1619 thash = &auth_hash_md5; 1620 break; 1621 case CRYPTO_SHA1: 1622 thash = &auth_hash_sha1; 1623 break; 1624 case CRYPTO_AES_XCBC_MAC_96: 1625 thash = &auth_hash_aes_xcbc_mac_96; 1626 break; 1627 case CRYPTO_AES_128_GMAC: 1628 thash = &auth_hash_gmac_aes_128; 1629 break; 1630 case CRYPTO_AES_192_GMAC: 1631 thash = &auth_hash_gmac_aes_192; 1632 break; 1633 case CRYPTO_AES_256_GMAC: 1634 thash = &auth_hash_gmac_aes_256; 1635 break; 1636 case CRYPTO_NULL_HMAC: 1637 thash = &auth_hash_null; 1638 break; 1639 default: 1640 DPRINTF(("Invalid mac %d\n", sop->mac)); 1641 return EINVAL; 1642 } 1643 1644 memset(&crie, 0, sizeof(crie)); 1645 memset(&cria, 0, sizeof(cria)); 1646 memset(&cric, 0, sizeof(cric)); 1647 1648 if (tcomp) { 1649 cric.cri_alg = tcomp->type; 1650 cric.cri_klen = 0; 1651 DPRINTF(("tcomp->type = %d\n", tcomp->type)); 1652 1653 crihead = &cric; 1654 if (txform) { 1655 cric.cri_next = &crie; 1656 } else if (thash) { 1657 cric.cri_next = &cria; 1658 } 1659 } 1660 1661 if (txform) { 1662 crie.cri_alg = txform->type; 1663 crie.cri_klen = sop->keylen * 8; 1664 if (sop->keylen > txform->maxkey || 1665 sop->keylen < txform->minkey) { 1666 DPRINTF(("keylen %d not in [%d,%d]\n", 1667 sop->keylen, txform->minkey, txform->maxkey)); 1668 error = EINVAL; 1669 goto bail; 1670 } 1671 1672 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1673 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1674 goto bail; 1675 if (!crihead) { 1676 crihead = &crie; 1677 } 1678 if (thash) 1679 crie.cri_next = &cria; 1680 } 1681 1682 if (thash) { 1683 cria.cri_alg = thash->type; 1684 cria.cri_klen = sop->mackeylen * 8; 1685 if (sop->mackeylen != thash->keysize) { 1686 DPRINTF(("mackeylen %d != keysize %d\n", 1687 sop->mackeylen, thash->keysize)); 1688 error = EINVAL; 1689 goto bail; 1690 } 1691 if (cria.cri_klen) { 1692 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1693 M_WAITOK); 1694 if ((error = copyin(sop->mackey, cria.cri_key, 1695 cria.cri_klen / 8))) { 1696 goto bail; 1697 } 1698 } 1699 if (!crihead) { 1700 crihead = &cria; 1701 } 1702 } 1703 1704 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1705 if (!error) { 1706 DPRINTF(("cryptodev_session: got session %d\n", (uint32_t)sid)); 1707 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1708 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1709 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1710 if (cse != NULL) { 1711 sop->ses = cse->ses; 1712 } else { 1713 DPRINTF(("csecreate failed\n")); 1714 crypto_freesession(sid); 1715 error = EINVAL; 1716 } 1717 } else { 1718 DPRINTF(("SIOCSESSION violates kernel parameters %d\n", 1719 error)); 1720 } 1721 bail: 1722 if (error) { 1723 if (crie.cri_key) { 1724 memset(crie.cri_key, 0, crie.cri_klen / 8); 1725 free(crie.cri_key, M_XDATA); 1726 } 1727 if (cria.cri_key) { 1728 memset(cria.cri_key, 0, cria.cri_klen / 8); 1729 free(cria.cri_key, M_XDATA); 1730 } 1731 } 1732 return error; 1733 } 1734 1735 int 1736 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1737 int count) 1738 { 1739 int i; 1740 1741 for (i = 0; i < count; i++, sn_ops++) { 1742 struct session_op s_op; 1743 s_op.cipher = sn_ops->cipher; 1744 s_op.mac = sn_ops->mac; 1745 s_op.keylen = sn_ops->keylen; 1746 s_op.key = sn_ops->key; 1747 s_op.mackeylen = sn_ops->mackeylen; 1748 s_op.mackey = sn_ops->mackey; 1749 1750 sn_ops->status = cryptodev_session(fcr, &s_op); 1751 sn_ops->ses = s_op.ses; 1752 } 1753 1754 return 0; 1755 } 1756 1757 static int 1758 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1759 { 1760 struct csession *cse; 1761 int req, error = 0; 1762 1763 mutex_enter(&crypto_mtx); 1764 for(req = 0; req < count; req++) { 1765 cse = csefind(fcr, sesid[req]); 1766 if (cse == NULL) 1767 continue; 1768 csedelete(fcr, cse); 1769 mutex_exit(&crypto_mtx); 1770 error = csefree(cse); 1771 mutex_enter(&crypto_mtx); 1772 } 1773 mutex_exit(&crypto_mtx); 1774 return error; 1775 } 1776 1777 /* 1778 * collect as many completed requests as are availble, or count completed 1779 * requests whichever is less. 1780 * return the number of requests. 1781 */ 1782 static int 1783 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1784 int count) 1785 { 1786 struct cryptop *crp = NULL; 1787 struct cryptkop *krp = NULL; 1788 struct csession *cse; 1789 int i, size, req = 0; 1790 int completed=0; 1791 1792 /* On queue so nobody else can grab them 1793 * and copyout can be delayed-- no locking */ 1794 TAILQ_HEAD(, cryptop) crp_delfree_q = 1795 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1796 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1797 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1798 1799 /* at this point we do not know which response user is requesting for 1800 * (symmetric or asymmetric) so we copyout one from each i.e if the 1801 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1802 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1803 1804 /* pull off a list of requests while protected from changes */ 1805 mutex_enter(&crypto_mtx); 1806 while (req < count) { 1807 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1808 if (crp) { 1809 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1810 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1811 cse = (struct csession *)crp->crp_opaque; 1812 1813 /* see if the session is still valid */ 1814 cse = csefind(fcr, cse->ses); 1815 if (cse != NULL) { 1816 crypt_res[req].status = 0; 1817 } else { 1818 DPRINTF(("csefind failed\n")); 1819 crypt_res[req].status = EINVAL; 1820 } 1821 req++; 1822 } 1823 if(req < count) { 1824 crypt_res[req].status = 0; 1825 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1826 if (krp) { 1827 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1828 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1829 req++; 1830 } 1831 } 1832 } 1833 mutex_exit(&crypto_mtx); 1834 1835 /* now do all the work outside the mutex */ 1836 for(req=0; req < count ;) { 1837 crp = TAILQ_FIRST(&crp_delfree_q); 1838 if (crp) { 1839 if (crypt_res[req].status != 0) { 1840 /* csefind failed during collection */ 1841 goto bail; 1842 } 1843 cse = (struct csession *)crp->crp_opaque; 1844 crypt_res[req].reqid = crp->crp_reqid; 1845 crypt_res[req].opaque = crp->crp_usropaque; 1846 completed++; 1847 1848 if (crp->crp_etype != 0) { 1849 crypt_res[req].status = crp->crp_etype; 1850 goto bail; 1851 } 1852 1853 if (cse->error) { 1854 crypt_res[req].status = cse->error; 1855 goto bail; 1856 } 1857 1858 if (crp->dst && (crypt_res[req].status = 1859 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1860 crp->len))) 1861 goto bail; 1862 1863 if (crp->mac && (crypt_res[req].status = 1864 copyout(crp->crp_mac, crp->mac, 1865 cse->thash->authsize))) 1866 goto bail; 1867 1868 bail: 1869 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1870 kmem_free(crp->uio.uio_iov[0].iov_base, 1871 crp->uio.uio_iov[0].iov_len); 1872 crypto_freereq(crp); 1873 req++; 1874 } 1875 1876 if (req < count) { 1877 krp = TAILQ_FIRST(&krp_delfree_q); 1878 if (krp) { 1879 crypt_res[req].reqid = krp->krp_reqid; 1880 crypt_res[req].opaque = krp->krp_usropaque; 1881 completed++; 1882 if (krp->krp_status != 0) { 1883 DPRINTF(("cryptodev_key: " 1884 "krp->krp_status 0x%08x\n", 1885 krp->krp_status)); 1886 crypt_res[req].status = krp->krp_status; 1887 goto fail; 1888 } 1889 1890 for (i = krp->krp_iparams; i < krp->krp_iparams 1891 + krp->krp_oparams; i++) { 1892 size = (krp->krp_param[i].crp_nbits 1893 + 7) / 8; 1894 if (size == 0) 1895 continue; 1896 crypt_res[req].status = copyout 1897 (krp->krp_param[i].crp_p, 1898 krp->crk_param[i].crp_p, size); 1899 if (crypt_res[req].status) { 1900 DPRINTF(("cryptodev_key: " 1901 "copyout oparam %d failed, " 1902 "error=%d\n", 1903 i - krp->krp_iparams, 1904 crypt_res[req].status)); 1905 goto fail; 1906 } 1907 } 1908 fail: 1909 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1910 /* not sure what to do for this */ 1911 /* kop[req].crk_status = krp->krp_status; */ 1912 for (i = 0; i < CRK_MAXPARAM; i++) { 1913 struct crparam *kp = &(krp->krp_param[i]); 1914 if (kp->crp_p) { 1915 size = (kp->crp_nbits + 7) / 8; 1916 KASSERT(size > 0); 1917 (void)memset(kp->crp_p, 0, size); 1918 kmem_free(kp->crp_p, size); 1919 } 1920 } 1921 cv_destroy(&krp->krp_cv); 1922 pool_put(&cryptkop_pool, krp); 1923 req++; 1924 } 1925 } 1926 } 1927 1928 return completed; 1929 } 1930 1931 static int 1932 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1933 { 1934 struct cryptop *crp = NULL, *cnext; 1935 struct cryptkop *krp = NULL, *knext; 1936 struct csession *cse; 1937 int i, size, req = 0; 1938 1939 mutex_enter(&crypto_mtx); 1940 /* Here we dont know for which request the user is requesting the 1941 * response so checking in both the queues */ 1942 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1943 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1944 cse = (struct csession *)crp->crp_opaque; 1945 crypt_res->opaque = crp->crp_usropaque; 1946 cse = csefind(fcr, cse->ses); 1947 if (cse == NULL) { 1948 DPRINTF(("csefind failed\n")); 1949 crypt_res->status = EINVAL; 1950 goto bail; 1951 } 1952 1953 if (crp->crp_etype != 0) { 1954 crypt_res->status = crp->crp_etype; 1955 goto bail; 1956 } 1957 1958 if (cse->error) { 1959 crypt_res->status = cse->error; 1960 goto bail; 1961 } 1962 1963 if (crp->dst && (crypt_res->status = 1964 copyout(crp->uio.uio_iov[0].iov_base, 1965 crp->dst, crp->len))) 1966 goto bail; 1967 1968 if (crp->mac && (crypt_res->status = 1969 copyout(crp->crp_mac, crp->mac, 1970 cse->thash->authsize))) 1971 goto bail; 1972 bail: 1973 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1974 1975 mutex_exit(&crypto_mtx); 1976 crypto_freereq(crp); 1977 return 0; 1978 } 1979 } 1980 1981 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1982 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1983 crypt_res[req].opaque = krp->krp_usropaque; 1984 if (krp->krp_status != 0) { 1985 DPRINTF(("cryptodev_key: " 1986 "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(("cryptodev_key: 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(&crypto_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 pool_put(&cryptkop_pool, krp); 2024 return 0; 2025 } 2026 } 2027 mutex_exit(&crypto_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(&crypto_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(&crypto_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(&crypto_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(&crypto_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(&crypto_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(&crypto_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 Thu Oct 02 14:10:14 GMT 2025