cryptodev.c revision 1.75
1 /* $NetBSD: cryptodev.c,v 1.75 2014/01/24 15:11:09 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 1.75 2014/01/24 15:11:09 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 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 struct csession { 100 TAILQ_ENTRY(csession) next; 101 u_int64_t sid; 102 u_int32_t ses; 103 104 u_int32_t cipher; /* note: shares name space in crd_alg */ 105 const struct enc_xform *txform; 106 u_int32_t mac; /* note: shares name space in crd_alg */ 107 const struct auth_hash *thash; 108 u_int32_t comp_alg; /* note: shares name space in crd_alg */ 109 const struct comp_algo *tcomp; 110 111 void * key; 112 int keylen; 113 u_char tmp_iv[EALG_MAX_BLOCK_LEN]; 114 115 void * mackey; 116 int mackeylen; 117 u_char tmp_mac[CRYPTO_MAX_MAC_LEN]; 118 119 struct iovec iovec[1]; /* user requests never have more */ 120 struct uio uio; 121 int error; 122 }; 123 124 struct fcrypt { 125 TAILQ_HEAD(csessionlist, csession) csessions; 126 TAILQ_HEAD(crprethead, cryptop) crp_ret_mq; 127 TAILQ_HEAD(krprethead, cryptkop) crp_ret_mkq; 128 int sesn; 129 struct selinfo sinfo; 130 u_int32_t requestid; 131 struct timespec atime; 132 struct timespec mtime; 133 struct timespec btime; 134 }; 135 136 /* For our fixed-size allocations */ 137 static struct pool fcrpl; 138 static struct pool csepl; 139 140 /* Declaration of master device (fd-cloning/ctxt-allocating) entrypoints */ 141 static int cryptoopen(dev_t dev, int flag, int mode, struct lwp *l); 142 static int cryptoread(dev_t dev, struct uio *uio, int ioflag); 143 static int cryptowrite(dev_t dev, struct uio *uio, int ioflag); 144 static int cryptoselect(dev_t dev, int rw, struct lwp *l); 145 146 static int crypto_refcount = 0; /* Prevent detaching while in use */ 147 148 /* Declaration of cloned-device (per-ctxt) entrypoints */ 149 static int cryptof_read(struct file *, off_t *, struct uio *, 150 kauth_cred_t, int); 151 static int cryptof_write(struct file *, off_t *, struct uio *, 152 kauth_cred_t, int); 153 static int cryptof_ioctl(struct file *, u_long, void *); 154 static int cryptof_close(struct file *); 155 static int cryptof_poll(struct file *, int); 156 static int cryptof_stat(struct file *, struct stat *); 157 158 static const struct fileops cryptofops = { 159 .fo_read = cryptof_read, 160 .fo_write = cryptof_write, 161 .fo_ioctl = cryptof_ioctl, 162 .fo_fcntl = fnullop_fcntl, 163 .fo_poll = cryptof_poll, 164 .fo_stat = cryptof_stat, 165 .fo_close = cryptof_close, 166 .fo_kqfilter = fnullop_kqfilter, 167 .fo_restart = fnullop_restart, 168 }; 169 170 struct csession *cryptodev_csefind(struct fcrypt *, u_int); 171 static struct csession *csefind(struct fcrypt *, u_int); 172 static int csedelete(struct fcrypt *, struct csession *); 173 static struct csession *cseadd(struct fcrypt *, struct csession *); 174 static struct csession *csecreate(struct fcrypt *, u_int64_t, void *, 175 u_int64_t, void *, u_int64_t, u_int32_t, u_int32_t, u_int32_t, 176 const struct enc_xform *, const struct auth_hash *, 177 const struct comp_algo *); 178 static int csefree(struct csession *); 179 180 static int cryptodev_key(struct crypt_kop *); 181 static int cryptodev_mkey(struct fcrypt *, struct crypt_n_kop *, int); 182 static int cryptodev_msessionfin(struct fcrypt *, int, u_int32_t *); 183 184 static int cryptodev_cb(void *); 185 static int cryptodevkey_cb(void *); 186 187 static int cryptodev_mcb(void *); 188 static int cryptodevkey_mcb(void *); 189 190 static int cryptodev_getmstatus(struct fcrypt *, struct crypt_result *, 191 int); 192 static int cryptodev_getstatus(struct fcrypt *, struct crypt_result *); 193 194 #ifdef COMPAT_50 195 extern int ocryptof_ioctl(struct file *, u_long, void *); 196 #endif 197 198 /* 199 * sysctl-able control variables for /dev/crypto now defined in crypto.c: 200 * crypto_usercrypto, crypto_userasmcrypto, crypto_devallowsoft. 201 */ 202 203 /* ARGSUSED */ 204 int 205 cryptof_read(file_t *fp, off_t *poff, 206 struct uio *uio, kauth_cred_t cred, int flags) 207 { 208 return EIO; 209 } 210 211 /* ARGSUSED */ 212 int 213 cryptof_write(file_t *fp, off_t *poff, 214 struct uio *uio, kauth_cred_t cred, int flags) 215 { 216 return EIO; 217 } 218 219 /* ARGSUSED */ 220 int 221 cryptof_ioctl(struct file *fp, u_long cmd, void *data) 222 { 223 struct fcrypt *fcr = fp->f_data; 224 struct csession *cse; 225 struct session_op *sop; 226 struct session_n_op *snop; 227 struct crypt_op *cop; 228 struct crypt_mop *mop; 229 struct crypt_mkop *mkop; 230 struct crypt_n_op *cnop; 231 struct crypt_n_kop *knop; 232 struct crypt_sgop *sgop; 233 struct crypt_sfop *sfop; 234 struct cryptret *crypt_ret; 235 struct crypt_result *crypt_res; 236 u_int32_t ses; 237 u_int32_t *sesid; 238 int error = 0; 239 size_t count; 240 241 /* backwards compatibility */ 242 file_t *criofp; 243 struct fcrypt *criofcr; 244 int criofd; 245 246 mutex_enter(&crypto_mtx); 247 getnanotime(&fcr->atime); 248 mutex_exit(&crypto_mtx); 249 250 switch (cmd) { 251 case CRIOGET: /* XXX deprecated, remove after 5.0 */ 252 if ((error = fd_allocfile(&criofp, &criofd)) != 0) 253 return error; 254 criofcr = pool_get(&fcrpl, PR_WAITOK); 255 mutex_enter(&crypto_mtx); 256 TAILQ_INIT(&criofcr->csessions); 257 TAILQ_INIT(&criofcr->crp_ret_mq); 258 TAILQ_INIT(&criofcr->crp_ret_mkq); 259 selinit(&criofcr->sinfo); 260 261 /* 262 * Don't ever return session 0, to allow detection of 263 * failed creation attempts with multi-create ioctl. 264 */ 265 criofcr->sesn = 1; 266 criofcr->requestid = 1; 267 crypto_refcount++; 268 mutex_exit(&crypto_mtx); 269 (void)fd_clone(criofp, criofd, (FREAD|FWRITE), 270 &cryptofops, criofcr); 271 *(u_int32_t *)data = criofd; 272 return error; 273 break; 274 case CIOCGSESSION: 275 sop = (struct session_op *)data; 276 error = cryptodev_session(fcr, sop); 277 break; 278 case CIOCNGSESSION: 279 sgop = (struct crypt_sgop *)data; 280 snop = kmem_alloc((sgop->count * 281 sizeof(struct session_n_op)), KM_SLEEP); 282 error = copyin(sgop->sessions, snop, sgop->count * 283 sizeof(struct session_n_op)); 284 if (error) { 285 goto mbail; 286 } 287 288 mutex_enter(&crypto_mtx); 289 fcr->mtime = fcr->atime; 290 mutex_exit(&crypto_mtx); 291 error = cryptodev_msession(fcr, snop, sgop->count); 292 if (error) { 293 goto mbail; 294 } 295 296 error = copyout(snop, sgop->sessions, sgop->count * 297 sizeof(struct session_n_op)); 298 mbail: 299 kmem_free(snop, sgop->count * sizeof(struct session_n_op)); 300 break; 301 case CIOCFSESSION: 302 mutex_enter(&crypto_mtx); 303 fcr->mtime = fcr->atime; 304 ses = *(u_int32_t *)data; 305 cse = csefind(fcr, ses); 306 if (cse == NULL) { 307 mutex_exit(&crypto_mtx); 308 return EINVAL; 309 } 310 csedelete(fcr, cse); 311 mutex_exit(&crypto_mtx); 312 error = csefree(cse); 313 break; 314 case CIOCNFSESSION: 315 mutex_enter(&crypto_mtx); 316 fcr->mtime = fcr->atime; 317 mutex_exit(&crypto_mtx); 318 sfop = (struct crypt_sfop *)data; 319 sesid = kmem_alloc((sfop->count * sizeof(u_int32_t)), 320 KM_SLEEP); 321 error = copyin(sfop->sesid, sesid, 322 (sfop->count * sizeof(u_int32_t))); 323 if (!error) { 324 error = cryptodev_msessionfin(fcr, sfop->count, sesid); 325 } 326 kmem_free(sesid, (sfop->count * sizeof(u_int32_t))); 327 break; 328 case CIOCCRYPT: 329 mutex_enter(&crypto_mtx); 330 fcr->mtime = fcr->atime; 331 cop = (struct crypt_op *)data; 332 cse = csefind(fcr, cop->ses); 333 mutex_exit(&crypto_mtx); 334 if (cse == NULL) { 335 DPRINTF(("csefind failed\n")); 336 return EINVAL; 337 } 338 error = cryptodev_op(cse, cop, curlwp); 339 DPRINTF(("cryptodev_op error = %d\n", error)); 340 break; 341 case CIOCNCRYPTM: 342 mutex_enter(&crypto_mtx); 343 fcr->mtime = fcr->atime; 344 mutex_exit(&crypto_mtx); 345 mop = (struct crypt_mop *)data; 346 cnop = kmem_alloc((mop->count * sizeof(struct crypt_n_op)), 347 KM_SLEEP); 348 error = copyin(mop->reqs, cnop, 349 (mop->count * sizeof(struct crypt_n_op))); 350 if(!error) { 351 error = cryptodev_mop(fcr, cnop, mop->count, curlwp); 352 if (!error) { 353 error = copyout(cnop, mop->reqs, 354 (mop->count * sizeof(struct crypt_n_op))); 355 } 356 } 357 kmem_free(cnop, (mop->count * sizeof(struct crypt_n_op))); 358 break; 359 case CIOCKEY: 360 error = cryptodev_key((struct crypt_kop *)data); 361 DPRINTF(("cryptodev_key error = %d\n", error)); 362 break; 363 case CIOCNFKEYM: 364 mutex_enter(&crypto_mtx); 365 fcr->mtime = fcr->atime; 366 mutex_exit(&crypto_mtx); 367 mkop = (struct crypt_mkop *)data; 368 knop = kmem_alloc((mkop->count * sizeof(struct crypt_n_kop)), 369 KM_SLEEP); 370 error = copyin(mkop->reqs, knop, 371 (mkop->count * sizeof(struct crypt_n_kop))); 372 if (!error) { 373 error = cryptodev_mkey(fcr, knop, mkop->count); 374 if (!error) 375 error = copyout(knop, mkop->reqs, 376 (mkop->count * sizeof(struct crypt_n_kop))); 377 } 378 kmem_free(knop, (mkop->count * sizeof(struct crypt_n_kop))); 379 break; 380 case CIOCASYMFEAT: 381 error = crypto_getfeat((int *)data); 382 break; 383 case CIOCNCRYPTRETM: 384 mutex_enter(&crypto_mtx); 385 fcr->mtime = fcr->atime; 386 mutex_exit(&crypto_mtx); 387 crypt_ret = (struct cryptret *)data; 388 count = crypt_ret->count; 389 crypt_res = kmem_alloc((count * sizeof(struct crypt_result)), 390 KM_SLEEP); 391 error = copyin(crypt_ret->results, crypt_res, 392 (count * sizeof(struct crypt_result))); 393 if (error) 394 goto reterr; 395 crypt_ret->count = cryptodev_getmstatus(fcr, crypt_res, 396 crypt_ret->count); 397 /* sanity check count */ 398 if (crypt_ret->count > count) { 399 printf("%s.%d: error returned count %zd > original " 400 " count %zd\n", 401 __FILE__, __LINE__, crypt_ret->count, count); 402 crypt_ret->count = count; 403 404 } 405 error = copyout(crypt_res, crypt_ret->results, 406 (crypt_ret->count * sizeof(struct crypt_result))); 407 reterr: 408 kmem_free(crypt_res, (count * sizeof(struct crypt_result))); 409 break; 410 case CIOCNCRYPTRET: 411 error = cryptodev_getstatus(fcr, (struct crypt_result *)data); 412 break; 413 default: 414 #ifdef COMPAT_50 415 /* Check for backward compatible commands */ 416 error = ocryptof_ioctl(fp, cmd, data); 417 #else 418 return EINVAL; 419 #endif 420 } 421 return error; 422 } 423 424 int 425 cryptodev_op(struct csession *cse, struct crypt_op *cop, struct lwp *l) 426 { 427 struct cryptop *crp = NULL; 428 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 429 int error; 430 int iov_len = cop->len; 431 int flags=0; 432 int dst_len; /* copyout size */ 433 434 if (cop->len > 256*1024-4) 435 return E2BIG; 436 437 if (cse->txform) { 438 if (cop->len < cse->txform->blocksize 439 + (cop->iv ? 0 : cse->txform->ivsize) || 440 (cop->len - (cop->iv ? 0 : cse->txform->ivsize)) 441 % cse->txform->blocksize != 0) 442 return EINVAL; 443 } 444 445 DPRINTF(("cryptodev_op[%u]: iov_len %d\n", 446 CRYPTO_SESID2LID(cse->sid), iov_len)); 447 if ((cse->tcomp) && cop->dst_len) { 448 if (iov_len < cop->dst_len) { 449 /* Need larger iov to deal with decompress */ 450 iov_len = cop->dst_len; 451 } 452 DPRINTF(("cryptodev_op: iov_len -> %d for decompress\n", iov_len)); 453 } 454 455 (void)memset(&cse->uio, 0, sizeof(cse->uio)); 456 cse->uio.uio_iovcnt = 1; 457 cse->uio.uio_resid = 0; 458 cse->uio.uio_rw = UIO_WRITE; 459 cse->uio.uio_iov = cse->iovec; 460 UIO_SETUP_SYSSPACE(&cse->uio); 461 memset(&cse->iovec, 0, sizeof(cse->iovec)); 462 463 /* the iov needs to be big enough to handle the uncompressed 464 * data.... */ 465 cse->uio.uio_iov[0].iov_len = iov_len; 466 if (iov_len > 0) 467 cse->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 468 cse->uio.uio_resid = cse->uio.uio_iov[0].iov_len; 469 DPRINTF(("cryptodev_op[%u]: uio.iov_base %p malloced %d bytes\n", 470 CRYPTO_SESID2LID(cse->sid), 471 cse->uio.uio_iov[0].iov_base, iov_len)); 472 473 crp = crypto_getreq((cse->tcomp != NULL) + (cse->txform != NULL) + (cse->thash != NULL)); 474 if (crp == NULL) { 475 error = ENOMEM; 476 goto bail; 477 } 478 DPRINTF(("cryptodev_op[%u]: crp %p\n", 479 CRYPTO_SESID2LID(cse->sid), crp)); 480 481 /* crds are always ordered tcomp, thash, then txform */ 482 /* with optional missing links */ 483 484 /* XXX: If we're going to compress then hash or encrypt, we need 485 * to be able to pass on the new size of the data. 486 */ 487 488 if (cse->tcomp) { 489 crdc = crp->crp_desc; 490 } 491 492 if (cse->thash) { 493 crda = crdc ? crdc->crd_next : crp->crp_desc; 494 if (cse->txform && crda) 495 crde = crda->crd_next; 496 } else { 497 if (cse->txform) { 498 crde = crdc ? crdc->crd_next : crp->crp_desc; 499 } else if (!cse->tcomp) { 500 error = EINVAL; 501 goto bail; 502 } 503 } 504 505 DPRINTF(("ocf[%u]: iov_len %zu, cop->len %u\n", 506 CRYPTO_SESID2LID(cse->sid), 507 cse->uio.uio_iov[0].iov_len, 508 cop->len)); 509 510 if ((error = copyin(cop->src, cse->uio.uio_iov[0].iov_base, cop->len))) 511 { 512 printf("copyin failed %s %d \n", (char *)cop->src, error); 513 goto bail; 514 } 515 516 if (crdc) { 517 switch (cop->op) { 518 case COP_COMP: 519 crdc->crd_flags |= CRD_F_COMP; 520 break; 521 case COP_DECOMP: 522 crdc->crd_flags &= ~CRD_F_COMP; 523 break; 524 default: 525 break; 526 } 527 /* more data to follow? */ 528 if (cop->flags & COP_F_MORE) { 529 flags |= CRYPTO_F_MORE; 530 } 531 crdc->crd_len = cop->len; 532 crdc->crd_inject = 0; 533 534 crdc->crd_alg = cse->comp_alg; 535 crdc->crd_key = NULL; 536 crdc->crd_klen = 0; 537 DPRINTF(("cryptodev_op[%u]: crdc setup for comp_alg %d.\n", 538 CRYPTO_SESID2LID(cse->sid), crdc->crd_alg)); 539 } 540 541 if (crda) { 542 crda->crd_skip = 0; 543 crda->crd_len = cop->len; 544 crda->crd_inject = 0; /* ??? */ 545 546 crda->crd_alg = cse->mac; 547 crda->crd_key = cse->mackey; 548 crda->crd_klen = cse->mackeylen * 8; 549 DPRINTF(("cryptodev_op: crda setup for mac %d.\n", crda->crd_alg)); 550 } 551 552 if (crde) { 553 switch (cop->op) { 554 case COP_ENCRYPT: 555 crde->crd_flags |= CRD_F_ENCRYPT; 556 break; 557 case COP_DECRYPT: 558 crde->crd_flags &= ~CRD_F_ENCRYPT; 559 break; 560 default: 561 break; 562 } 563 crde->crd_len = cop->len; 564 crde->crd_inject = 0; 565 566 if (cse->cipher == CRYPTO_AES_GCM_16 && crda) 567 crda->crd_len = 0; 568 else if (cse->cipher == CRYPTO_AES_GMAC) 569 crde->crd_len = 0; 570 571 crde->crd_alg = cse->cipher; 572 crde->crd_key = cse->key; 573 crde->crd_klen = cse->keylen * 8; 574 DPRINTF(("cryptodev_op: crde setup for cipher %d.\n", crde->crd_alg)); 575 } 576 577 578 crp->crp_ilen = cop->len; 579 /* The reqest is flagged as CRYPTO_F_USER as long as it is running 580 * in the user IOCTL thread. This flag lets us skip using the retq for 581 * the request if it completes immediately. If the request ends up being 582 * delayed or is not completed immediately the flag is removed. 583 */ 584 crp->crp_flags = CRYPTO_F_IOV | (cop->flags & COP_F_BATCH) | CRYPTO_F_USER | 585 flags; 586 crp->crp_buf = (void *)&cse->uio; 587 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_cb; 588 crp->crp_sid = cse->sid; 589 crp->crp_opaque = (void *)cse; 590 591 if (cop->iv) { 592 if (crde == NULL) { 593 error = EINVAL; 594 goto bail; 595 } 596 if (cse->txform->ivsize == 0) { 597 error = EINVAL; 598 goto bail; 599 } 600 if ((error = copyin(cop->iv, cse->tmp_iv, 601 cse->txform->ivsize))) 602 goto bail; 603 (void)memcpy(crde->crd_iv, cse->tmp_iv, cse->txform->ivsize); 604 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 605 crde->crd_skip = 0; 606 } else if (crde) { 607 if (cse->txform->ivsize == 0) { 608 crde->crd_skip = 0; 609 } else { 610 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 611 crde->crd_flags |= CRD_F_IV_PRESENT; 612 crde->crd_skip = cse->txform->ivsize; 613 crde->crd_len -= cse->txform->ivsize; 614 } 615 } 616 617 if (cop->mac) { 618 if (crda == NULL) { 619 error = EINVAL; 620 goto bail; 621 } 622 crp->crp_mac=cse->tmp_mac; 623 } 624 625 cv_init(&crp->crp_cv, "crydev"); 626 627 /* 628 * XXX there was a comment here which said that we went to 629 * XXX splcrypto() but needed to only if CRYPTO_F_CBIMM, 630 * XXX disabled on NetBSD since 1.6O due to a race condition. 631 * XXX But crypto_dispatch went to splcrypto() itself! (And 632 * XXX now takes the crypto_mtx mutex itself). We do, however, 633 * XXX need to hold the mutex across the call to cv_wait(). 634 * XXX (should we arrange for crypto_dispatch to return to 635 * XXX us with it held? it seems quite ugly to do so.) 636 */ 637 #ifdef notyet 638 eagain: 639 #endif 640 error = crypto_dispatch(crp); 641 mutex_enter(&crypto_mtx); 642 643 /* 644 * If the request was going to be completed by the 645 * ioctl thread then it would have been done by now. 646 * Remove the F_USER flag so crypto_done() is not confused 647 * if the crypto device calls it after this point. 648 */ 649 crp->crp_flags &= ~(CRYPTO_F_USER); 650 651 switch (error) { 652 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 653 case EAGAIN: 654 mutex_exit(&crypto_mtx); 655 goto eagain; 656 break; 657 #endif 658 case 0: 659 break; 660 default: 661 DPRINTF(("cryptodev_op: not waiting, error.\n")); 662 mutex_exit(&crypto_mtx); 663 cv_destroy(&crp->crp_cv); 664 goto bail; 665 } 666 667 while (!(crp->crp_flags & CRYPTO_F_DONE)) { 668 DPRINTF(("cryptodev_op[%d]: sleeping on cv %p for crp %p\n", 669 (uint32_t)cse->sid, &crp->crp_cv, crp)); 670 cv_wait(&crp->crp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 671 } 672 if (crp->crp_flags & CRYPTO_F_ONRETQ) { 673 /* XXX this should never happen now with the CRYPTO_F_USER flag 674 * changes. 675 */ 676 DPRINTF(("cryptodev_op: DONE, not woken by cryptoret.\n")); 677 (void)crypto_ret_q_remove(crp); 678 } 679 mutex_exit(&crypto_mtx); 680 cv_destroy(&crp->crp_cv); 681 682 if (crp->crp_etype != 0) { 683 DPRINTF(("cryptodev_op: crp_etype %d\n", crp->crp_etype)); 684 error = crp->crp_etype; 685 goto bail; 686 } 687 688 if (cse->error) { 689 DPRINTF(("cryptodev_op: cse->error %d\n", cse->error)); 690 error = cse->error; 691 goto bail; 692 } 693 694 dst_len = crp->crp_ilen; 695 /* let the user know how much data was returned */ 696 if (crp->crp_olen) { 697 if (crp->crp_olen > (cop->dst_len ? cop->dst_len : cop->len)) { 698 error = ENOMEM; 699 goto bail; 700 } 701 dst_len = cop->dst_len = crp->crp_olen; 702 } 703 704 if (cop->dst) { 705 DPRINTF(("cryptodev_op: copyout %d bytes to %p\n", dst_len, cop->dst)); 706 } 707 if (cop->dst && 708 (error = copyout(cse->uio.uio_iov[0].iov_base, cop->dst, dst_len))) 709 { 710 DPRINTF(("cryptodev_op: copyout error %d\n", error)); 711 goto bail; 712 } 713 714 if (cop->mac && 715 (error = copyout(crp->crp_mac, cop->mac, cse->thash->authsize))) { 716 DPRINTF(("cryptodev_op: mac copyout error %d\n", error)); 717 goto bail; 718 } 719 720 721 bail: 722 if (crp) { 723 crypto_freereq(crp); 724 } 725 if (cse->uio.uio_iov[0].iov_base) { 726 kmem_free(cse->uio.uio_iov[0].iov_base,iov_len); 727 } 728 729 return error; 730 } 731 732 static int 733 cryptodev_cb(void *op) 734 { 735 struct cryptop *crp = (struct cryptop *) op; 736 struct csession *cse = (struct csession *)crp->crp_opaque; 737 int error = 0; 738 739 mutex_enter(&crypto_mtx); 740 cse->error = crp->crp_etype; 741 if (crp->crp_etype == EAGAIN) { 742 /* always drop mutex to call dispatch routine */ 743 mutex_exit(&crypto_mtx); 744 error = crypto_dispatch(crp); 745 mutex_enter(&crypto_mtx); 746 } 747 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 748 cv_signal(&crp->crp_cv); 749 } 750 mutex_exit(&crypto_mtx); 751 return 0; 752 } 753 754 static int 755 cryptodev_mcb(void *op) 756 { 757 struct cryptop *crp = (struct cryptop *) op; 758 struct csession *cse = (struct csession *)crp->crp_opaque; 759 int error=0; 760 761 mutex_enter(&crypto_mtx); 762 cse->error = crp->crp_etype; 763 if (crp->crp_etype == EAGAIN) { 764 mutex_exit(&crypto_mtx); 765 error = crypto_dispatch(crp); 766 mutex_enter(&crypto_mtx); 767 } 768 if (error != 0 || (crp->crp_flags & CRYPTO_F_DONE)) { 769 cv_signal(&crp->crp_cv); 770 } 771 772 TAILQ_INSERT_TAIL(&crp->fcrp->crp_ret_mq, crp, crp_next); 773 selnotify(&crp->fcrp->sinfo, 0, 0); 774 mutex_exit(&crypto_mtx); 775 return 0; 776 } 777 778 static int 779 cryptodevkey_cb(void *op) 780 { 781 struct cryptkop *krp = op; 782 783 mutex_enter(&crypto_mtx); 784 cv_signal(&krp->krp_cv); 785 mutex_exit(&crypto_mtx); 786 return 0; 787 } 788 789 static int 790 cryptodevkey_mcb(void *op) 791 { 792 struct cryptkop *krp = op; 793 794 mutex_enter(&crypto_mtx); 795 cv_signal(&krp->krp_cv); 796 TAILQ_INSERT_TAIL(&krp->fcrp->crp_ret_mkq, krp, krp_next); 797 selnotify(&krp->fcrp->sinfo, 0, 0); 798 mutex_exit(&crypto_mtx); 799 return 0; 800 } 801 802 static int 803 cryptodev_key(struct crypt_kop *kop) 804 { 805 struct cryptkop *krp = NULL; 806 int error = EINVAL; 807 int in, out, size, i; 808 809 if (kop->crk_iparams + kop->crk_oparams > CRK_MAXPARAM) 810 return EFBIG; 811 812 in = kop->crk_iparams; 813 out = kop->crk_oparams; 814 switch (kop->crk_op) { 815 case CRK_MOD_EXP: 816 if (in == 3 && out == 1) 817 break; 818 return EINVAL; 819 case CRK_MOD_EXP_CRT: 820 if (in == 6 && out == 1) 821 break; 822 return EINVAL; 823 case CRK_DSA_SIGN: 824 if (in == 5 && out == 2) 825 break; 826 return EINVAL; 827 case CRK_DSA_VERIFY: 828 if (in == 7 && out == 0) 829 break; 830 return EINVAL; 831 case CRK_DH_COMPUTE_KEY: 832 if (in == 3 && out == 1) 833 break; 834 return EINVAL; 835 case CRK_MOD_ADD: 836 if (in == 3 && out == 1) 837 break; 838 return EINVAL; 839 case CRK_MOD_ADDINV: 840 if (in == 2 && out == 1) 841 break; 842 return EINVAL; 843 case CRK_MOD_SUB: 844 if (in == 3 && out == 1) 845 break; 846 return EINVAL; 847 case CRK_MOD_MULT: 848 if (in == 3 && out == 1) 849 break; 850 return EINVAL; 851 case CRK_MOD_MULTINV: 852 if (in == 2 && out == 1) 853 break; 854 return EINVAL; 855 case CRK_MOD: 856 if (in == 2 && out == 1) 857 break; 858 return EINVAL; 859 default: 860 return EINVAL; 861 } 862 863 krp = pool_get(&cryptkop_pool, PR_WAITOK); 864 (void)memset(krp, 0, sizeof *krp); 865 cv_init(&krp->krp_cv, "crykdev"); 866 krp->krp_op = kop->crk_op; 867 krp->krp_status = kop->crk_status; 868 krp->krp_iparams = kop->crk_iparams; 869 krp->krp_oparams = kop->crk_oparams; 870 krp->krp_status = 0; 871 krp->krp_callback = (int (*) (struct cryptkop *)) cryptodevkey_cb; 872 873 for (i = 0; i < CRK_MAXPARAM; i++) 874 krp->krp_param[i].crp_nbits = kop->crk_param[i].crp_nbits; 875 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 876 size = (krp->krp_param[i].crp_nbits + 7) / 8; 877 if (size == 0) 878 continue; 879 krp->krp_param[i].crp_p = kmem_alloc(size, KM_SLEEP); 880 if (i >= krp->krp_iparams) 881 continue; 882 error = copyin(kop->crk_param[i].crp_p, 883 krp->krp_param[i].crp_p, size); 884 if (error) 885 goto fail; 886 } 887 888 error = crypto_kdispatch(krp); 889 if (error != 0) { 890 goto fail; 891 } 892 893 mutex_enter(&crypto_mtx); 894 while (!(krp->krp_flags & CRYPTO_F_DONE)) { 895 cv_wait(&krp->krp_cv, &crypto_mtx); /* XXX cv_wait_sig? */ 896 } 897 if (krp->krp_flags & CRYPTO_F_ONRETQ) { 898 DPRINTF(("cryptodev_key: DONE early, not via cryptoret.\n")); 899 (void)crypto_ret_kq_remove(krp); 900 } 901 mutex_exit(&crypto_mtx); 902 903 if (krp->krp_status != 0) { 904 DPRINTF(("cryptodev_key: krp->krp_status 0x%08x\n", 905 krp->krp_status)); 906 error = krp->krp_status; 907 goto fail; 908 } 909 910 for (i = krp->krp_iparams; i < krp->krp_iparams + krp->krp_oparams; 911 i++) { 912 size = (krp->krp_param[i].crp_nbits + 7) / 8; 913 if (size == 0) 914 continue; 915 error = copyout(krp->krp_param[i].crp_p, 916 kop->crk_param[i].crp_p, size); 917 if (error) { 918 DPRINTF(("cryptodev_key: copyout oparam %d failed, " 919 "error=%d\n", i-krp->krp_iparams, error)); 920 goto fail; 921 } 922 } 923 924 fail: 925 kop->crk_status = krp->krp_status; 926 for (i = 0; i < CRK_MAXPARAM; i++) { 927 struct crparam *kp = &(krp->krp_param[i]); 928 if (krp->krp_param[i].crp_p) { 929 size = (kp->crp_nbits + 7) / 8; 930 KASSERT(size > 0); 931 (void)memset(kp->crp_p, 0, size); 932 kmem_free(kp->crp_p, size); 933 } 934 } 935 cv_destroy(&krp->krp_cv); 936 pool_put(&cryptkop_pool, krp); 937 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 938 return error; 939 } 940 941 /* ARGSUSED */ 942 static int 943 cryptof_close(struct file *fp) 944 { 945 struct fcrypt *fcr = fp->f_data; 946 struct csession *cse; 947 948 mutex_enter(&crypto_mtx); 949 while ((cse = TAILQ_FIRST(&fcr->csessions))) { 950 TAILQ_REMOVE(&fcr->csessions, cse, next); 951 mutex_exit(&crypto_mtx); 952 (void)csefree(cse); 953 mutex_enter(&crypto_mtx); 954 } 955 seldestroy(&fcr->sinfo); 956 fp->f_data = NULL; 957 crypto_refcount--; 958 mutex_exit(&crypto_mtx); 959 960 pool_put(&fcrpl, fcr); 961 return 0; 962 } 963 964 /* needed for compatibility module */ 965 struct csession *cryptodev_csefind(struct fcrypt *fcr, u_int ses) 966 { 967 return csefind(fcr, ses); 968 } 969 970 /* csefind: call with crypto_mtx held. */ 971 static struct csession * 972 csefind(struct fcrypt *fcr, u_int ses) 973 { 974 struct csession *cse, *cnext, *ret = NULL; 975 976 KASSERT(mutex_owned(&crypto_mtx)); 977 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) 978 if (cse->ses == ses) 979 ret = cse; 980 981 return ret; 982 } 983 984 /* csedelete: call with crypto_mtx held. */ 985 static int 986 csedelete(struct fcrypt *fcr, struct csession *cse_del) 987 { 988 struct csession *cse, *cnext; 989 int ret = 0; 990 991 KASSERT(mutex_owned(&crypto_mtx)); 992 TAILQ_FOREACH_SAFE(cse, &fcr->csessions, next, cnext) { 993 if (cse == cse_del) { 994 TAILQ_REMOVE(&fcr->csessions, cse, next); 995 ret = 1; 996 } 997 } 998 return ret; 999 } 1000 1001 static struct csession * 1002 cseadd(struct fcrypt *fcr, struct csession *cse) 1003 { 1004 mutex_enter(&crypto_mtx); 1005 /* don't let session ID wrap! */ 1006 if (fcr->sesn + 1 == 0) return NULL; 1007 TAILQ_INSERT_TAIL(&fcr->csessions, cse, next); 1008 cse->ses = fcr->sesn++; 1009 mutex_exit(&crypto_mtx); 1010 return cse; 1011 } 1012 1013 static struct csession * 1014 csecreate(struct fcrypt *fcr, u_int64_t sid, void *key, u_int64_t keylen, 1015 void *mackey, u_int64_t mackeylen, u_int32_t cipher, u_int32_t mac, 1016 u_int32_t comp_alg, const struct enc_xform *txform, 1017 const struct auth_hash *thash, const struct comp_algo *tcomp) 1018 { 1019 struct csession *cse; 1020 1021 cse = pool_get(&csepl, PR_NOWAIT); 1022 if (cse == NULL) 1023 return NULL; 1024 cse->key = key; 1025 cse->keylen = keylen/8; 1026 cse->mackey = mackey; 1027 cse->mackeylen = mackeylen/8; 1028 cse->sid = sid; 1029 cse->cipher = cipher; 1030 cse->mac = mac; 1031 cse->comp_alg = comp_alg; 1032 cse->txform = txform; 1033 cse->thash = thash; 1034 cse->tcomp = tcomp; 1035 cse->error = 0; 1036 if (cseadd(fcr, cse)) 1037 return cse; 1038 else { 1039 pool_put(&csepl, cse); 1040 return NULL; 1041 } 1042 } 1043 1044 /* csefree: call with crypto_mtx held. */ 1045 static int 1046 csefree(struct csession *cse) 1047 { 1048 int error; 1049 1050 error = crypto_freesession(cse->sid); 1051 if (cse->key) 1052 free(cse->key, M_XDATA); 1053 if (cse->mackey) 1054 free(cse->mackey, M_XDATA); 1055 pool_put(&csepl, cse); 1056 return error; 1057 } 1058 1059 static int 1060 cryptoopen(dev_t dev, int flag, int mode, 1061 struct lwp *l) 1062 { 1063 file_t *fp; 1064 struct fcrypt *fcr; 1065 int fd, error; 1066 1067 if (crypto_usercrypto == 0) 1068 return ENXIO; 1069 1070 if ((error = fd_allocfile(&fp, &fd)) != 0) 1071 return error; 1072 1073 fcr = pool_get(&fcrpl, PR_WAITOK); 1074 getnanotime(&fcr->btime); 1075 fcr->atime = fcr->mtime = fcr->btime; 1076 mutex_enter(&crypto_mtx); 1077 TAILQ_INIT(&fcr->csessions); 1078 TAILQ_INIT(&fcr->crp_ret_mq); 1079 TAILQ_INIT(&fcr->crp_ret_mkq); 1080 selinit(&fcr->sinfo); 1081 /* 1082 * Don't ever return session 0, to allow detection of 1083 * failed creation attempts with multi-create ioctl. 1084 */ 1085 fcr->sesn = 1; 1086 fcr->requestid = 1; 1087 crypto_refcount++; 1088 mutex_exit(&crypto_mtx); 1089 return fd_clone(fp, fd, flag, &cryptofops, fcr); 1090 } 1091 1092 static int 1093 cryptoread(dev_t dev, struct uio *uio, int ioflag) 1094 { 1095 return EIO; 1096 } 1097 1098 static int 1099 cryptowrite(dev_t dev, struct uio *uio, int ioflag) 1100 { 1101 return EIO; 1102 } 1103 1104 int 1105 cryptoselect(dev_t dev, int rw, struct lwp *l) 1106 { 1107 return 0; 1108 } 1109 1110 /*static*/ 1111 struct cdevsw crypto_cdevsw = { 1112 /* open */ cryptoopen, 1113 /* close */ noclose, 1114 /* read */ cryptoread, 1115 /* write */ cryptowrite, 1116 /* ioctl */ noioctl, 1117 /* ttstop?*/ nostop, 1118 /* ??*/ notty, 1119 /* poll */ cryptoselect /*nopoll*/, 1120 /* mmap */ nommap, 1121 /* kqfilter */ nokqfilter, 1122 /* type */ D_OTHER, 1123 }; 1124 1125 int 1126 cryptodev_mop(struct fcrypt *fcr, 1127 struct crypt_n_op * cnop, 1128 int count, struct lwp *l) 1129 { 1130 struct cryptop *crp = NULL; 1131 struct cryptodesc *crde = NULL, *crda = NULL, *crdc = NULL; 1132 int req, error=0; 1133 struct csession *cse; 1134 int flags=0; 1135 int iov_len; 1136 1137 for (req = 0; req < count; req++) { 1138 mutex_enter(&crypto_mtx); 1139 cse = csefind(fcr, cnop[req].ses); 1140 if (cse == NULL) { 1141 DPRINTF(("csefind failed\n")); 1142 cnop[req].status = EINVAL; 1143 mutex_exit(&crypto_mtx); 1144 continue; 1145 } 1146 mutex_exit(&crypto_mtx); 1147 1148 if (cnop[req].len > 256*1024-4) { 1149 DPRINTF(("length failed\n")); 1150 cnop[req].status = EINVAL; 1151 continue; 1152 } 1153 if (cse->txform) { 1154 if (cnop[req].len < cse->txform->blocksize - 1155 (cnop[req].iv ? 0 : cse->txform->ivsize) || 1156 (cnop[req].len - 1157 (cnop[req].iv ? 0 : cse->txform->ivsize)) 1158 % cse->txform->blocksize) { 1159 cnop[req].status = EINVAL; 1160 continue; 1161 } 1162 } 1163 1164 crp = crypto_getreq((cse->txform != NULL) + 1165 (cse->thash != NULL) + 1166 (cse->tcomp != NULL)); 1167 if (crp == NULL) { 1168 cnop[req].status = ENOMEM; 1169 goto bail; 1170 } 1171 1172 iov_len = cnop[req].len; 1173 /* got a compression/decompression max size? */ 1174 if ((cse->tcomp) && cnop[req].dst_len) { 1175 if (iov_len < cnop[req].dst_len) { 1176 /* Need larger iov to deal with decompress */ 1177 iov_len = cnop[req].dst_len; 1178 } 1179 DPRINTF(("cryptodev_mop: iov_len -> %d for decompress\n", iov_len)); 1180 } 1181 1182 (void)memset(&crp->uio, 0, sizeof(crp->uio)); 1183 crp->uio.uio_iovcnt = 1; 1184 crp->uio.uio_resid = 0; 1185 crp->uio.uio_rw = UIO_WRITE; 1186 crp->uio.uio_iov = crp->iovec; 1187 UIO_SETUP_SYSSPACE(&crp->uio); 1188 memset(&crp->iovec, 0, sizeof(crp->iovec)); 1189 crp->uio.uio_iov[0].iov_len = iov_len; 1190 DPRINTF(("cryptodev_mop: kmem_alloc(%d) for iov \n", iov_len)); 1191 crp->uio.uio_iov[0].iov_base = kmem_alloc(iov_len, KM_SLEEP); 1192 crp->uio.uio_resid = crp->uio.uio_iov[0].iov_len; 1193 1194 if (cse->tcomp) { 1195 crdc = crp->crp_desc; 1196 } 1197 1198 if (cse->thash) { 1199 crda = crdc ? crdc->crd_next : crp->crp_desc; 1200 if (cse->txform && crda) 1201 crde = crda->crd_next; 1202 } else { 1203 if (cse->txform) { 1204 crde = crdc ? crdc->crd_next : crp->crp_desc; 1205 } else if (!cse->tcomp) { 1206 error = EINVAL; 1207 goto bail; 1208 } 1209 } 1210 1211 if ((copyin(cnop[req].src, 1212 crp->uio.uio_iov[0].iov_base, cnop[req].len))) { 1213 cnop[req].status = EINVAL; 1214 goto bail; 1215 } 1216 1217 if (crdc) { 1218 switch (cnop[req].op) { 1219 case COP_COMP: 1220 crdc->crd_flags |= CRD_F_COMP; 1221 break; 1222 case COP_DECOMP: 1223 crdc->crd_flags &= ~CRD_F_COMP; 1224 break; 1225 default: 1226 break; 1227 } 1228 /* more data to follow? */ 1229 if (cnop[req].flags & COP_F_MORE) { 1230 flags |= CRYPTO_F_MORE; 1231 } 1232 crdc->crd_len = cnop[req].len; 1233 crdc->crd_inject = 0; 1234 1235 crdc->crd_alg = cse->comp_alg; 1236 crdc->crd_key = NULL; 1237 crdc->crd_klen = 0; 1238 DPRINTF(("cryptodev_mop[%d]: crdc setup for comp_alg %d" 1239 " len %d.\n", 1240 (uint32_t)cse->sid, crdc->crd_alg, 1241 crdc->crd_len)); 1242 } 1243 1244 if (crda) { 1245 crda->crd_skip = 0; 1246 crda->crd_len = cnop[req].len; 1247 crda->crd_inject = 0; /* ??? */ 1248 1249 crda->crd_alg = cse->mac; 1250 crda->crd_key = cse->mackey; 1251 crda->crd_klen = cse->mackeylen * 8; 1252 } 1253 1254 if (crde) { 1255 if (cnop[req].op == COP_ENCRYPT) 1256 crde->crd_flags |= CRD_F_ENCRYPT; 1257 else 1258 crde->crd_flags &= ~CRD_F_ENCRYPT; 1259 crde->crd_len = cnop[req].len; 1260 crde->crd_inject = 0; 1261 1262 crde->crd_alg = cse->cipher; 1263 #ifdef notyet /* XXX must notify h/w driver new key, drain */ 1264 if(cnop[req].key && cnop[req].keylen) { 1265 crde->crd_key = malloc(cnop[req].keylen, 1266 M_XDATA, M_WAITOK); 1267 if((error = copyin(cnop[req].key, 1268 crde->crd_key, cnop[req].keylen))) { 1269 cnop[req].status = EINVAL; 1270 goto bail; 1271 } 1272 crde->crd_klen = cnop[req].keylen * 8; 1273 } else { ... } 1274 #endif 1275 crde->crd_key = cse->key; 1276 crde->crd_klen = cse->keylen * 8; 1277 } 1278 1279 crp->crp_ilen = cnop[req].len; 1280 crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_CBIMM | 1281 (cnop[req].flags & COP_F_BATCH) | flags; 1282 crp->crp_buf = (void *)&crp->uio; 1283 crp->crp_callback = (int (*) (struct cryptop *)) cryptodev_mcb; 1284 crp->crp_sid = cse->sid; 1285 crp->crp_opaque = (void *)cse; 1286 crp->fcrp = fcr; 1287 crp->dst = cnop[req].dst; 1288 crp->len = cnop[req].len; /* input len, iov may be larger */ 1289 crp->mac = cnop[req].mac; 1290 DPRINTF(("cryptodev_mop: iov_base %p dst %p len %d mac %p\n", 1291 crp->uio.uio_iov[0].iov_base, crp->dst, crp->len, 1292 crp->mac)); 1293 1294 if (cnop[req].iv) { 1295 if (crde == NULL) { 1296 cnop[req].status = EINVAL; 1297 goto bail; 1298 } 1299 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1300 cnop[req].status = EINVAL; 1301 goto bail; 1302 } 1303 if ((error = copyin(cnop[req].iv, crp->tmp_iv, 1304 cse->txform->ivsize))) { 1305 cnop[req].status = EINVAL; 1306 goto bail; 1307 } 1308 (void)memcpy(crde->crd_iv, crp->tmp_iv, 1309 cse->txform->ivsize); 1310 crde->crd_flags |= CRD_F_IV_EXPLICIT | CRD_F_IV_PRESENT; 1311 crde->crd_skip = 0; 1312 } else if (crde) { 1313 if (cse->cipher == CRYPTO_ARC4) { /* XXX use flag? */ 1314 crde->crd_skip = 0; 1315 } else { 1316 if (!(crde->crd_flags & CRD_F_ENCRYPT)) 1317 crde->crd_flags |= CRD_F_IV_PRESENT; 1318 crde->crd_skip = cse->txform->ivsize; 1319 crde->crd_len -= cse->txform->ivsize; 1320 } 1321 } 1322 1323 if (cnop[req].mac) { 1324 if (crda == NULL) { 1325 cnop[req].status = EINVAL; 1326 goto bail; 1327 } 1328 crp->crp_mac=cse->tmp_mac; 1329 } 1330 cnop[req].reqid = atomic_inc_32_nv(&(fcr->requestid)); 1331 crp->crp_reqid = cnop[req].reqid; 1332 crp->crp_usropaque = cnop[req].opaque; 1333 cv_init(&crp->crp_cv, "crydev"); 1334 #ifdef notyet 1335 eagain: 1336 #endif 1337 cnop[req].status = crypto_dispatch(crp); 1338 mutex_enter(&crypto_mtx); /* XXX why mutex? */ 1339 1340 switch (cnop[req].status) { 1341 #ifdef notyet /* don't loop forever -- but EAGAIN not possible here yet */ 1342 case EAGAIN: 1343 mutex_exit(&crypto_mtx); 1344 goto eagain; 1345 break; 1346 #endif 1347 case 0: 1348 break; 1349 default: 1350 DPRINTF(("cryptodev_op: not waiting, error.\n")); 1351 mutex_exit(&crypto_mtx); 1352 cv_destroy(&crp->crp_cv); 1353 goto bail; 1354 } 1355 1356 mutex_exit(&crypto_mtx); 1357 cv_destroy(&crp->crp_cv); 1358 bail: 1359 if (cnop[req].status) { 1360 if (crp) { 1361 if (crp->uio.uio_iov[0].iov_base) { 1362 kmem_free(crp->uio.uio_iov[0].iov_base, 1363 crp->uio.uio_iov[0].iov_len); 1364 } 1365 crypto_freereq(crp); 1366 } 1367 error = 0; 1368 } 1369 } 1370 return error; 1371 } 1372 1373 static int 1374 cryptodev_mkey(struct fcrypt *fcr, struct crypt_n_kop *kop, int count) 1375 { 1376 struct cryptkop *krp = NULL; 1377 int error = EINVAL; 1378 int in, out, size, i, req; 1379 1380 for (req = 0; req < count; req++) { 1381 if (kop[req].crk_iparams + kop[req].crk_oparams > CRK_MAXPARAM) 1382 return EFBIG; 1383 1384 in = kop[req].crk_iparams; 1385 out = kop[req].crk_oparams; 1386 switch (kop[req].crk_op) { 1387 case CRK_MOD_EXP: 1388 if (in == 3 && out == 1) 1389 break; 1390 kop[req].crk_status = EINVAL; 1391 continue; 1392 case CRK_MOD_EXP_CRT: 1393 if (in == 6 && out == 1) 1394 break; 1395 kop[req].crk_status = EINVAL; 1396 continue; 1397 case CRK_DSA_SIGN: 1398 if (in == 5 && out == 2) 1399 break; 1400 kop[req].crk_status = EINVAL; 1401 continue; 1402 case CRK_DSA_VERIFY: 1403 if (in == 7 && out == 0) 1404 break; 1405 kop[req].crk_status = EINVAL; 1406 continue; 1407 case CRK_DH_COMPUTE_KEY: 1408 if (in == 3 && out == 1) 1409 break; 1410 kop[req].crk_status = EINVAL; 1411 continue; 1412 case CRK_MOD_ADD: 1413 if (in == 3 && out == 1) 1414 break; 1415 kop[req].crk_status = EINVAL; 1416 continue; 1417 case CRK_MOD_ADDINV: 1418 if (in == 2 && out == 1) 1419 break; 1420 kop[req].crk_status = EINVAL; 1421 continue; 1422 case CRK_MOD_SUB: 1423 if (in == 3 && out == 1) 1424 break; 1425 kop[req].crk_status = EINVAL; 1426 continue; 1427 case CRK_MOD_MULT: 1428 if (in == 3 && out == 1) 1429 break; 1430 kop[req].crk_status = EINVAL; 1431 continue; 1432 case CRK_MOD_MULTINV: 1433 if (in == 2 && out == 1) 1434 break; 1435 kop[req].crk_status = EINVAL; 1436 continue; 1437 case CRK_MOD: 1438 if (in == 2 && out == 1) 1439 break; 1440 kop[req].crk_status = EINVAL; 1441 continue; 1442 default: 1443 kop[req].crk_status = EINVAL; 1444 continue; 1445 } 1446 1447 krp = pool_get(&cryptkop_pool, PR_WAITOK); 1448 (void)memset(krp, 0, sizeof *krp); 1449 cv_init(&krp->krp_cv, "crykdev"); 1450 krp->krp_op = kop[req].crk_op; 1451 krp->krp_status = kop[req].crk_status; 1452 krp->krp_iparams = kop[req].crk_iparams; 1453 krp->krp_oparams = kop[req].crk_oparams; 1454 krp->krp_status = 0; 1455 krp->krp_callback = 1456 (int (*) (struct cryptkop *)) cryptodevkey_mcb; 1457 (void)memcpy(krp->crk_param, kop[req].crk_param, 1458 sizeof(kop[req].crk_param)); 1459 1460 krp->krp_flags = CRYPTO_F_CBIMM; 1461 1462 for (i = 0; i < CRK_MAXPARAM; i++) 1463 krp->krp_param[i].crp_nbits = 1464 kop[req].crk_param[i].crp_nbits; 1465 for (i = 0; i < krp->krp_iparams + krp->krp_oparams; i++) { 1466 size = (krp->krp_param[i].crp_nbits + 7) / 8; 1467 if (size == 0) 1468 continue; 1469 krp->krp_param[i].crp_p = 1470 kmem_alloc(size, KM_SLEEP); 1471 if (i >= krp->krp_iparams) 1472 continue; 1473 kop[req].crk_status = 1474 copyin(kop[req].crk_param[i].crp_p, 1475 krp->krp_param[i].crp_p, size); 1476 if (kop[req].crk_status) 1477 goto fail; 1478 } 1479 krp->fcrp = fcr; 1480 1481 kop[req].crk_reqid = atomic_inc_32_nv(&(fcr->requestid)); 1482 krp->krp_reqid = kop[req].crk_reqid; 1483 krp->krp_usropaque = kop[req].crk_opaque; 1484 1485 kop[req].crk_status = crypto_kdispatch(krp); 1486 if (kop[req].crk_status != 0) { 1487 goto fail; 1488 } 1489 1490 fail: 1491 if(kop[req].crk_status) { 1492 if (krp) { 1493 kop[req].crk_status = krp->krp_status; 1494 for (i = 0; i < CRK_MAXPARAM; i++) { 1495 struct crparam *kp = 1496 &(krp->krp_param[i]); 1497 if (kp->crp_p) { 1498 size = (kp->crp_nbits + 7) / 8; 1499 KASSERT(size > 0); 1500 memset(kp->crp_p, 0, size); 1501 kmem_free(kp->crp_p, size); 1502 } 1503 } 1504 cv_destroy(&krp->krp_cv); 1505 pool_put(&cryptkop_pool, krp); 1506 } 1507 } 1508 error = 0; 1509 } 1510 DPRINTF(("cryptodev_key: error=0x%08x\n", error)); 1511 return error; 1512 } 1513 1514 int 1515 cryptodev_session(struct fcrypt *fcr, struct session_op *sop) 1516 { 1517 struct cryptoini cria, crie; 1518 struct cryptoini cric; /* compressor */ 1519 struct cryptoini *crihead = NULL; 1520 const struct enc_xform *txform = NULL; 1521 const struct auth_hash *thash = NULL; 1522 const struct comp_algo *tcomp = NULL; 1523 struct csession *cse; 1524 u_int64_t sid; 1525 int error = 0; 1526 1527 DPRINTF(("cryptodev_session() cipher=%d, mac=%d\n", sop->cipher, sop->mac)); 1528 1529 /* XXX there must be a way to not embed the list of xforms here */ 1530 switch (sop->cipher) { 1531 case 0: 1532 break; 1533 case CRYPTO_DES_CBC: 1534 txform = &enc_xform_des; 1535 break; 1536 case CRYPTO_3DES_CBC: 1537 txform = &enc_xform_3des; 1538 break; 1539 case CRYPTO_BLF_CBC: 1540 txform = &enc_xform_blf; 1541 break; 1542 case CRYPTO_CAST_CBC: 1543 txform = &enc_xform_cast5; 1544 break; 1545 case CRYPTO_SKIPJACK_CBC: 1546 txform = &enc_xform_skipjack; 1547 break; 1548 case CRYPTO_AES_CBC: 1549 txform = &enc_xform_rijndael128; 1550 break; 1551 case CRYPTO_CAMELLIA_CBC: 1552 txform = &enc_xform_camellia; 1553 break; 1554 case CRYPTO_AES_CTR: 1555 txform = &enc_xform_aes_ctr; 1556 break; 1557 case CRYPTO_AES_GCM_16: 1558 txform = &enc_xform_aes_gcm; 1559 break; 1560 case CRYPTO_AES_GMAC: 1561 txform = &enc_xform_aes_gmac; 1562 break; 1563 case CRYPTO_NULL_CBC: 1564 txform = &enc_xform_null; 1565 break; 1566 case CRYPTO_ARC4: 1567 txform = &enc_xform_arc4; 1568 break; 1569 default: 1570 DPRINTF(("Invalid cipher %d\n", sop->cipher)); 1571 return EINVAL; 1572 } 1573 1574 switch (sop->comp_alg) { 1575 case 0: 1576 break; 1577 case CRYPTO_DEFLATE_COMP: 1578 tcomp = &comp_algo_deflate; 1579 break; 1580 case CRYPTO_GZIP_COMP: 1581 tcomp = &comp_algo_gzip; 1582 DPRINTF(("cryptodev_session() tcomp for GZIP\n")); 1583 break; 1584 default: 1585 DPRINTF(("Invalid compression alg %d\n", sop->comp_alg)); 1586 return EINVAL; 1587 } 1588 1589 switch (sop->mac) { 1590 case 0: 1591 break; 1592 case CRYPTO_MD5_HMAC: 1593 thash = &auth_hash_hmac_md5; 1594 break; 1595 case CRYPTO_SHA1_HMAC: 1596 thash = &auth_hash_hmac_sha1; 1597 break; 1598 case CRYPTO_MD5_HMAC_96: 1599 thash = &auth_hash_hmac_md5_96; 1600 break; 1601 case CRYPTO_SHA1_HMAC_96: 1602 thash = &auth_hash_hmac_sha1_96; 1603 break; 1604 case CRYPTO_SHA2_HMAC: 1605 /* XXX switching on key length seems questionable */ 1606 if (sop->mackeylen == auth_hash_hmac_sha2_256.keysize) { 1607 thash = &auth_hash_hmac_sha2_256; 1608 } else if (sop->mackeylen == auth_hash_hmac_sha2_384.keysize) { 1609 thash = &auth_hash_hmac_sha2_384; 1610 } else if (sop->mackeylen == auth_hash_hmac_sha2_512.keysize) { 1611 thash = &auth_hash_hmac_sha2_512; 1612 } else { 1613 DPRINTF(("Invalid mackeylen %d\n", sop->mackeylen)); 1614 return EINVAL; 1615 } 1616 break; 1617 case CRYPTO_RIPEMD160_HMAC: 1618 thash = &auth_hash_hmac_ripemd_160; 1619 break; 1620 case CRYPTO_RIPEMD160_HMAC_96: 1621 thash = &auth_hash_hmac_ripemd_160_96; 1622 break; 1623 case CRYPTO_MD5: 1624 thash = &auth_hash_md5; 1625 break; 1626 case CRYPTO_SHA1: 1627 thash = &auth_hash_sha1; 1628 break; 1629 case CRYPTO_AES_XCBC_MAC_96: 1630 thash = &auth_hash_aes_xcbc_mac_96; 1631 break; 1632 case CRYPTO_AES_128_GMAC: 1633 thash = &auth_hash_gmac_aes_128; 1634 break; 1635 case CRYPTO_AES_192_GMAC: 1636 thash = &auth_hash_gmac_aes_192; 1637 break; 1638 case CRYPTO_AES_256_GMAC: 1639 thash = &auth_hash_gmac_aes_256; 1640 break; 1641 case CRYPTO_NULL_HMAC: 1642 thash = &auth_hash_null; 1643 break; 1644 default: 1645 DPRINTF(("Invalid mac %d\n", sop->mac)); 1646 return EINVAL; 1647 } 1648 1649 memset(&crie, 0, sizeof(crie)); 1650 memset(&cria, 0, sizeof(cria)); 1651 memset(&cric, 0, sizeof(cric)); 1652 1653 if (tcomp) { 1654 cric.cri_alg = tcomp->type; 1655 cric.cri_klen = 0; 1656 DPRINTF(("tcomp->type = %d\n", tcomp->type)); 1657 1658 crihead = &cric; 1659 if (txform) { 1660 cric.cri_next = &crie; 1661 } else if (thash) { 1662 cric.cri_next = &cria; 1663 } 1664 } 1665 1666 if (txform) { 1667 crie.cri_alg = txform->type; 1668 crie.cri_klen = sop->keylen * 8; 1669 if (sop->keylen > txform->maxkey || 1670 sop->keylen < txform->minkey) { 1671 DPRINTF(("keylen %d not in [%d,%d]\n", 1672 sop->keylen, txform->minkey, txform->maxkey)); 1673 error = EINVAL; 1674 goto bail; 1675 } 1676 1677 crie.cri_key = malloc(crie.cri_klen / 8, M_XDATA, M_WAITOK); 1678 if ((error = copyin(sop->key, crie.cri_key, crie.cri_klen / 8))) 1679 goto bail; 1680 if (!crihead) { 1681 crihead = &crie; 1682 } 1683 if (thash) 1684 crie.cri_next = &cria; 1685 } 1686 1687 if (thash) { 1688 cria.cri_alg = thash->type; 1689 cria.cri_klen = sop->mackeylen * 8; 1690 if (sop->mackeylen != thash->keysize) { 1691 DPRINTF(("mackeylen %d != keysize %d\n", 1692 sop->mackeylen, thash->keysize)); 1693 error = EINVAL; 1694 goto bail; 1695 } 1696 if (cria.cri_klen) { 1697 cria.cri_key = malloc(cria.cri_klen / 8, M_XDATA, 1698 M_WAITOK); 1699 if ((error = copyin(sop->mackey, cria.cri_key, 1700 cria.cri_klen / 8))) { 1701 goto bail; 1702 } 1703 } 1704 if (!crihead) { 1705 crihead = &cria; 1706 } 1707 } 1708 1709 error = crypto_newsession(&sid, crihead, crypto_devallowsoft); 1710 if (!error) { 1711 DPRINTF(("cyrptodev_session: got session %d\n", (uint32_t)sid)); 1712 cse = csecreate(fcr, sid, crie.cri_key, crie.cri_klen, 1713 cria.cri_key, cria.cri_klen, (txform ? sop->cipher : 0), sop->mac, 1714 (tcomp ? sop->comp_alg : 0), txform, thash, tcomp); 1715 if (cse != NULL) { 1716 sop->ses = cse->ses; 1717 } else { 1718 DPRINTF(("csecreate failed\n")); 1719 crypto_freesession(sid); 1720 error = EINVAL; 1721 } 1722 } else { 1723 DPRINTF(("SIOCSESSION violates kernel parameters %d\n", 1724 error)); 1725 } 1726 bail: 1727 if (error) { 1728 if (crie.cri_key) { 1729 memset(crie.cri_key, 0, crie.cri_klen / 8); 1730 free(crie.cri_key, M_XDATA); 1731 } 1732 if (cria.cri_key) { 1733 memset(cria.cri_key, 0, cria.cri_klen / 8); 1734 free(cria.cri_key, M_XDATA); 1735 } 1736 } 1737 return error; 1738 } 1739 1740 int 1741 cryptodev_msession(struct fcrypt *fcr, struct session_n_op *sn_ops, 1742 int count) 1743 { 1744 int i; 1745 1746 for (i = 0; i < count; i++, sn_ops++) { 1747 struct session_op s_op; 1748 s_op.cipher = sn_ops->cipher; 1749 s_op.mac = sn_ops->mac; 1750 s_op.keylen = sn_ops->keylen; 1751 s_op.key = sn_ops->key; 1752 s_op.mackeylen = sn_ops->mackeylen; 1753 s_op.mackey = sn_ops->mackey; 1754 1755 sn_ops->status = cryptodev_session(fcr, &s_op); 1756 sn_ops->ses = s_op.ses; 1757 } 1758 1759 return 0; 1760 } 1761 1762 static int 1763 cryptodev_msessionfin(struct fcrypt *fcr, int count, u_int32_t *sesid) 1764 { 1765 struct csession *cse; 1766 int req, error = 0; 1767 1768 mutex_enter(&crypto_mtx); 1769 for(req = 0; req < count; req++) { 1770 cse = csefind(fcr, sesid[req]); 1771 if (cse == NULL) 1772 continue; 1773 csedelete(fcr, cse); 1774 mutex_exit(&crypto_mtx); 1775 error = csefree(cse); 1776 mutex_enter(&crypto_mtx); 1777 } 1778 mutex_exit(&crypto_mtx); 1779 return error; 1780 } 1781 1782 /* 1783 * collect as many completed requests as are availble, or count completed 1784 * requests whichever is less. 1785 * return the number of requests. 1786 */ 1787 static int 1788 cryptodev_getmstatus(struct fcrypt *fcr, struct crypt_result *crypt_res, 1789 int count) 1790 { 1791 struct cryptop *crp = NULL; 1792 struct cryptkop *krp = NULL; 1793 struct csession *cse; 1794 int i, size, req = 0; 1795 int completed=0; 1796 1797 /* On queue so nobody else can grab them 1798 * and copyout can be delayed-- no locking */ 1799 TAILQ_HEAD(, cryptop) crp_delfree_q = 1800 TAILQ_HEAD_INITIALIZER(crp_delfree_q); 1801 TAILQ_HEAD(, cryptkop) krp_delfree_q = 1802 TAILQ_HEAD_INITIALIZER(krp_delfree_q); 1803 1804 /* at this point we do not know which response user is requesting for 1805 * (symmetric or asymmetric) so we copyout one from each i.e if the 1806 * count is 2 then 1 from symmetric and 1 from asymmetric queue and 1807 * if 3 then 2 symmetric and 1 asymmetric and so on */ 1808 1809 /* pull off a list of requests while protected from changes */ 1810 mutex_enter(&crypto_mtx); 1811 while (req < count) { 1812 crp = TAILQ_FIRST(&fcr->crp_ret_mq); 1813 if (crp) { 1814 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1815 TAILQ_INSERT_TAIL(&crp_delfree_q, crp, crp_next); 1816 cse = (struct csession *)crp->crp_opaque; 1817 1818 /* see if the session is still valid */ 1819 cse = csefind(fcr, cse->ses); 1820 if (cse != NULL) { 1821 crypt_res[req].status = 0; 1822 } else { 1823 DPRINTF(("csefind failed\n")); 1824 crypt_res[req].status = EINVAL; 1825 } 1826 req++; 1827 } 1828 if(req < count) { 1829 crypt_res[req].status = 0; 1830 krp = TAILQ_FIRST(&fcr->crp_ret_mkq); 1831 if (krp) { 1832 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 1833 TAILQ_INSERT_TAIL(&krp_delfree_q, krp, krp_next); 1834 req++; 1835 } 1836 } 1837 } 1838 mutex_exit(&crypto_mtx); 1839 1840 /* now do all the work outside the mutex */ 1841 for(req=0; req < count ;) { 1842 crp = TAILQ_FIRST(&crp_delfree_q); 1843 if (crp) { 1844 if (crypt_res[req].status != 0) { 1845 /* csefind failed during collection */ 1846 goto bail; 1847 } 1848 cse = (struct csession *)crp->crp_opaque; 1849 crypt_res[req].reqid = crp->crp_reqid; 1850 crypt_res[req].opaque = crp->crp_usropaque; 1851 completed++; 1852 1853 if (crp->crp_etype != 0) { 1854 crypt_res[req].status = crp->crp_etype; 1855 goto bail; 1856 } 1857 1858 if (cse->error) { 1859 crypt_res[req].status = cse->error; 1860 goto bail; 1861 } 1862 1863 if (crp->dst && (crypt_res[req].status = 1864 copyout(crp->uio.uio_iov[0].iov_base, crp->dst, 1865 crp->len))) 1866 goto bail; 1867 1868 if (crp->mac && (crypt_res[req].status = 1869 copyout(crp->crp_mac, crp->mac, 1870 cse->thash->authsize))) 1871 goto bail; 1872 1873 bail: 1874 TAILQ_REMOVE(&crp_delfree_q, crp, crp_next); 1875 kmem_free(crp->uio.uio_iov[0].iov_base, 1876 crp->uio.uio_iov[0].iov_len); 1877 crypto_freereq(crp); 1878 req++; 1879 } 1880 1881 if (req < count) { 1882 krp = TAILQ_FIRST(&krp_delfree_q); 1883 if (krp) { 1884 crypt_res[req].reqid = krp->krp_reqid; 1885 crypt_res[req].opaque = krp->krp_usropaque; 1886 completed++; 1887 if (krp->krp_status != 0) { 1888 DPRINTF(("cryptodev_key: " 1889 "krp->krp_status 0x%08x\n", 1890 krp->krp_status)); 1891 crypt_res[req].status = krp->krp_status; 1892 goto fail; 1893 } 1894 1895 for (i = krp->krp_iparams; i < krp->krp_iparams 1896 + krp->krp_oparams; i++) { 1897 size = (krp->krp_param[i].crp_nbits 1898 + 7) / 8; 1899 if (size == 0) 1900 continue; 1901 crypt_res[req].status = copyout 1902 (krp->krp_param[i].crp_p, 1903 krp->crk_param[i].crp_p, size); 1904 if (crypt_res[req].status) { 1905 DPRINTF(("cryptodev_key: " 1906 "copyout oparam %d failed, " 1907 "error=%d\n", 1908 i - krp->krp_iparams, 1909 crypt_res[req].status)); 1910 goto fail; 1911 } 1912 } 1913 fail: 1914 TAILQ_REMOVE(&krp_delfree_q, krp, krp_next); 1915 /* not sure what to do for this */ 1916 /* kop[req].crk_status = krp->krp_status; */ 1917 for (i = 0; i < CRK_MAXPARAM; i++) { 1918 struct crparam *kp = &(krp->krp_param[i]); 1919 if (kp->crp_p) { 1920 size = (kp->crp_nbits + 7) / 8; 1921 KASSERT(size > 0); 1922 (void)memset(kp->crp_p, 0, size); 1923 kmem_free(kp->crp_p, size); 1924 } 1925 } 1926 cv_destroy(&krp->krp_cv); 1927 pool_put(&cryptkop_pool, krp); 1928 req++; 1929 } 1930 } 1931 } 1932 1933 return completed; 1934 } 1935 1936 static int 1937 cryptodev_getstatus (struct fcrypt *fcr, struct crypt_result *crypt_res) 1938 { 1939 struct cryptop *crp = NULL, *cnext; 1940 struct cryptkop *krp = NULL, *knext; 1941 struct csession *cse; 1942 int i, size, req = 0; 1943 1944 mutex_enter(&crypto_mtx); 1945 /* Here we dont know for which request the user is requesting the 1946 * response so checking in both the queues */ 1947 TAILQ_FOREACH_SAFE(crp, &fcr->crp_ret_mq, crp_next, cnext) { 1948 if(crp && (crp->crp_reqid == crypt_res->reqid)) { 1949 cse = (struct csession *)crp->crp_opaque; 1950 crypt_res->opaque = crp->crp_usropaque; 1951 cse = csefind(fcr, cse->ses); 1952 if (cse == NULL) { 1953 DPRINTF(("csefind failed\n")); 1954 crypt_res->status = EINVAL; 1955 goto bail; 1956 } 1957 1958 if (crp->crp_etype != 0) { 1959 crypt_res->status = crp->crp_etype; 1960 goto bail; 1961 } 1962 1963 if (cse->error) { 1964 crypt_res->status = cse->error; 1965 goto bail; 1966 } 1967 1968 if (crp->dst && (crypt_res->status = 1969 copyout(crp->uio.uio_iov[0].iov_base, 1970 crp->dst, crp->len))) 1971 goto bail; 1972 1973 if (crp->mac && (crypt_res->status = 1974 copyout(crp->crp_mac, crp->mac, 1975 cse->thash->authsize))) 1976 goto bail; 1977 bail: 1978 TAILQ_REMOVE(&fcr->crp_ret_mq, crp, crp_next); 1979 1980 mutex_exit(&crypto_mtx); 1981 crypto_freereq(crp); 1982 return 0; 1983 } 1984 } 1985 1986 TAILQ_FOREACH_SAFE(krp, &fcr->crp_ret_mkq, krp_next, knext) { 1987 if(krp && (krp->krp_reqid == crypt_res->reqid)) { 1988 crypt_res[req].opaque = krp->krp_usropaque; 1989 if (krp->krp_status != 0) { 1990 DPRINTF(("cryptodev_key: " 1991 "krp->krp_status 0x%08x\n", 1992 krp->krp_status)); 1993 crypt_res[req].status = krp->krp_status; 1994 goto fail; 1995 } 1996 1997 for (i = krp->krp_iparams; i < krp->krp_iparams + 1998 krp->krp_oparams; i++) { 1999 size = (krp->krp_param[i].crp_nbits + 7) / 8; 2000 if (size == 0) 2001 continue; 2002 crypt_res[req].status = copyout( 2003 krp->krp_param[i].crp_p, 2004 krp->crk_param[i].crp_p, size); 2005 if (crypt_res[req].status) { 2006 DPRINTF(("cryptodev_key: copyout oparam" 2007 "%d failed, error=%d\n", 2008 i - krp->krp_iparams, 2009 crypt_res[req].status)); 2010 goto fail; 2011 } 2012 } 2013 fail: 2014 TAILQ_REMOVE(&fcr->crp_ret_mkq, krp, krp_next); 2015 mutex_exit(&crypto_mtx); 2016 /* not sure what to do for this */ 2017 /* kop[req].crk_status = krp->krp_status; */ 2018 for (i = 0; i < CRK_MAXPARAM; i++) { 2019 struct crparam *kp = &(krp->krp_param[i]); 2020 if (kp->crp_p) { 2021 size = (kp->crp_nbits + 7) / 8; 2022 KASSERT(size > 0); 2023 memset(kp->crp_p, 0, size); 2024 kmem_free(kp->crp_p, size); 2025 } 2026 } 2027 cv_destroy(&krp->krp_cv); 2028 pool_put(&cryptkop_pool, krp); 2029 return 0; 2030 } 2031 } 2032 mutex_exit(&crypto_mtx); 2033 return EINPROGRESS; 2034 } 2035 2036 static int 2037 cryptof_stat(struct file *fp, struct stat *st) 2038 { 2039 struct fcrypt *fcr = fp->f_data; 2040 2041 (void)memset(st, 0, sizeof(*st)); 2042 2043 mutex_enter(&crypto_mtx); 2044 st->st_dev = makedev(cdevsw_lookup_major(&crypto_cdevsw), fcr->sesn); 2045 st->st_atimespec = fcr->atime; 2046 st->st_mtimespec = fcr->mtime; 2047 st->st_ctimespec = st->st_birthtimespec = fcr->btime; 2048 st->st_uid = kauth_cred_geteuid(fp->f_cred); 2049 st->st_gid = kauth_cred_getegid(fp->f_cred); 2050 mutex_exit(&crypto_mtx); 2051 2052 return 0; 2053 } 2054 2055 static int 2056 cryptof_poll(struct file *fp, int events) 2057 { 2058 struct fcrypt *fcr = (struct fcrypt *)fp->f_data; 2059 int revents = 0; 2060 2061 if (!(events & (POLLIN | POLLRDNORM))) { 2062 /* only support read and POLLIN */ 2063 return 0; 2064 } 2065 2066 mutex_enter(&crypto_mtx); 2067 if (TAILQ_EMPTY(&fcr->crp_ret_mq) && TAILQ_EMPTY(&fcr->crp_ret_mkq)) { 2068 /* no completed requests pending, save the poll for later */ 2069 selrecord(curlwp, &fcr->sinfo); 2070 } else { 2071 /* let the app(s) know that there are completed requests */ 2072 revents = events & (POLLIN | POLLRDNORM); 2073 } 2074 mutex_exit(&crypto_mtx); 2075 2076 return revents; 2077 } 2078 2079 /* 2080 * Pseudo-device initialization routine for /dev/crypto 2081 */ 2082 void cryptoattach(int); 2083 2084 void 2085 cryptoattach(int num) 2086 { 2087 pool_init(&fcrpl, sizeof(struct fcrypt), 0, 0, 0, "fcrpl", 2088 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2089 pool_init(&csepl, sizeof(struct csession), 0, 0, 0, "csepl", 2090 NULL, IPL_NET); /* XXX IPL_NET ("splcrypto") */ 2091 2092 /* 2093 * Preallocate space for 64 users, with 5 sessions each. 2094 * (consider that a TLS protocol session requires at least 2095 * 3DES, MD5, and SHA1 (both hashes are used in the PRF) for 2096 * the negotiation, plus HMAC_SHA1 for the actual SSL records, 2097 * consuming one session here for each algorithm. 2098 */ 2099 pool_prime(&fcrpl, 64); 2100 pool_prime(&csepl, 64 * 5); 2101 } 2102 2103 void crypto_attach(device_t, device_t, void *); 2104 2105 void 2106 crypto_attach(device_t parent, device_t self, void * opaque) 2107 { 2108 2109 cryptoattach(0); 2110 } 2111 2112 int crypto_detach(device_t, int); 2113 2114 int 2115 crypto_detach(device_t self, int num) 2116 { 2117 2118 pool_destroy(&fcrpl); 2119 pool_destroy(&csepl); 2120 2121 return 0; 2122 } 2123 2124 int crypto_match(device_t, cfdata_t, void *); 2125 2126 int 2127 crypto_match(device_t parent, cfdata_t data, void *opaque) 2128 { 2129 2130 return 1; 2131 } 2132 2133 MODULE(MODULE_CLASS_DRIVER, crypto, "opencrypto"); 2134 2135 CFDRIVER_DECL(crypto, DV_DULL, NULL); 2136 2137 CFATTACH_DECL2_NEW(crypto, 0, crypto_match, crypto_attach, crypto_detach, 2138 NULL, NULL, NULL); 2139 2140 #ifdef _MODULE 2141 static int cryptoloc[] = { -1, -1 }; 2142 2143 static struct cfdata crypto_cfdata[] = { 2144 { 2145 .cf_name = "crypto", 2146 .cf_atname = "crypto", 2147 .cf_unit = 0, 2148 .cf_fstate = 0, 2149 .cf_loc = cryptoloc, 2150 .cf_flags = 0, 2151 .cf_pspec = NULL, 2152 }, 2153 { NULL, NULL, 0, 0, NULL, 0, NULL } 2154 }; 2155 #endif 2156 2157 static int 2158 crypto_modcmd(modcmd_t cmd, void *arg) 2159 { 2160 int error = 0; 2161 #ifdef _MODULE 2162 devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR; 2163 #endif 2164 2165 switch (cmd) { 2166 case MODULE_CMD_INIT: 2167 #ifdef _MODULE 2168 2169 error = config_cfdriver_attach(&crypto_cd); 2170 if (error) { 2171 return error; 2172 } 2173 2174 error = config_cfattach_attach(crypto_cd.cd_name, &crypto_ca); 2175 if (error) { 2176 config_cfdriver_detach(&crypto_cd); 2177 aprint_error("%s: unable to register cfattach\n", 2178 crypto_cd.cd_name); 2179 2180 return error; 2181 } 2182 2183 error = config_cfdata_attach(crypto_cfdata, 1); 2184 if (error) { 2185 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2186 config_cfdriver_detach(&crypto_cd); 2187 aprint_error("%s: unable to register cfdata\n", 2188 crypto_cd.cd_name); 2189 2190 return error; 2191 } 2192 2193 error = devsw_attach(crypto_cd.cd_name, NULL, &bmajor, 2194 &crypto_cdevsw, &cmajor); 2195 if (error) { 2196 error = config_cfdata_detach(crypto_cfdata); 2197 if (error) { 2198 return error; 2199 } 2200 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2201 config_cfdriver_detach(&crypto_cd); 2202 aprint_error("%s: unable to register devsw\n", 2203 crypto_cd.cd_name); 2204 2205 return error; 2206 } 2207 2208 (void)config_attach_pseudo(crypto_cfdata); 2209 #endif 2210 2211 return error; 2212 case MODULE_CMD_FINI: 2213 #ifdef _MODULE 2214 error = config_cfdata_detach(crypto_cfdata); 2215 if (error) { 2216 return error; 2217 } 2218 2219 config_cfattach_detach(crypto_cd.cd_name, &crypto_ca); 2220 config_cfdriver_detach(&crypto_cd); 2221 devsw_detach(NULL, &crypto_cdevsw); 2222 #endif 2223 2224 return error; 2225 #ifdef _MODULE 2226 case MODULE_CMD_AUTOUNLOAD: 2227 #if 0 /* 2228 * XXX Completely disable auto-unload for now, since there is still 2229 * XXX a (small) window where in-module ref-counting doesn't help 2230 */ 2231 if (crypto_refcount != 0) 2232 #endif 2233 return EBUSY; 2234 /* FALLTHROUGH */ 2235 #endif 2236 default: 2237 return ENOTTY; 2238 } 2239 } 2240
Indexes created Tue Sep 23 02:09:52 GMT 2025